digilib-old: servlet/src/digilib/image/JAIDocuImage.java annotate

annotate servlet/src/digilib/image/JAIDocuImage.java @ 140:c878ea574c29

Servlet Version 1.12b2 - fixed small error in XML config parser - improved high quality scaling with minSubsample parameter

author	robcast
date	Fri, 15 Aug 2003 23:52:20 +0200
parents	78f52a1876fe
children	f52a7664a807

rev	line source
1 0ff3ede32060 Initial revision robcast parents: diff changeset	1 /* JAIDocuImage -- Image class implementation using JAI (Java Advanced Imaging)
0ff3ede32060 Initial revision robcast parents: diff changeset	2
0ff3ede32060 Initial revision robcast parents: diff changeset	3 Digital Image Library servlet components
0ff3ede32060 Initial revision robcast parents: diff changeset	4
85 4e6757e8ccd4 New enhanced ImageLoader stuff. robcast parents: 79 diff changeset	5 Copyright (C) 2001, 2002, 2003 Robert Casties (robcast@mail.berlios.de)
1 0ff3ede32060 Initial revision robcast parents: diff changeset	6
0ff3ede32060 Initial revision robcast parents: diff changeset	7 This program is free software; you can redistribute it and/or modify it
0ff3ede32060 Initial revision robcast parents: diff changeset	8 under the terms of the GNU General Public License as published by the
0ff3ede32060 Initial revision robcast parents: diff changeset	9 Free Software Foundation; either version 2 of the License, or (at your
0ff3ede32060 Initial revision robcast parents: diff changeset	10 option) any later version.
0ff3ede32060 Initial revision robcast parents: diff changeset	11
0ff3ede32060 Initial revision robcast parents: diff changeset	12 Please read license.txt for the full details. A copy of the GPL
0ff3ede32060 Initial revision robcast parents: diff changeset	13 may be found at http://www.gnu.org/copyleft/lgpl.html
0ff3ede32060 Initial revision robcast parents: diff changeset	14
0ff3ede32060 Initial revision robcast parents: diff changeset	15 You should have received a copy of the GNU General Public License
0ff3ede32060 Initial revision robcast parents: diff changeset	16 along with this program; if not, write to the Free Software
0ff3ede32060 Initial revision robcast parents: diff changeset	17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
0ff3ede32060 Initial revision robcast parents: diff changeset	18
0ff3ede32060 Initial revision robcast parents: diff changeset	19 */
0ff3ede32060 Initial revision robcast parents: diff changeset	20
0ff3ede32060 Initial revision robcast parents: diff changeset	21 package digilib.image;
0ff3ede32060 Initial revision robcast parents: diff changeset	22
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	23 import java.awt.RenderingHints;
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	24 import java.awt.image.RenderedImage;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	25 import java.awt.image.renderable.ParameterBlock;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	26 import java.io.File;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	27 import java.io.IOException;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	28 import java.io.OutputStream;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	29
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	30 import javax.media.jai.*;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	31 import javax.media.jai.operator.TransposeDescriptor;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	32 import javax.media.jai.operator.TransposeType;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	33
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	34 import digilib.Utils;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	35 import digilib.io.FileOpException;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	36
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	37 /** A DocuImage implementation using Java Advanced Imaging Library. */
1 0ff3ede32060 Initial revision robcast parents: diff changeset	38 public class JAIDocuImage extends DocuImageImpl {
0ff3ede32060 Initial revision robcast parents: diff changeset	39
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	40 protected RenderedImage img;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	41 protected Interpolation interpol = null;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	42
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	43 /** Default constructor. */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	44 public JAIDocuImage() {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	45 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	46
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	47 /** Contructor taking an utils object.
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	48 * @param u utils object.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	49 */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	50 public JAIDocuImage(Utils u) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	51 util = u;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	52 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	53
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	54 /* Load an image file into the Object. */
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	55 public void loadImage(File f) throws FileOpException {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	56 System.gc();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	57 img = JAI.create("fileload", f.getAbsolutePath());
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	58 if (img == null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	59 util.dprintln(3, "ERROR(loadImage): unable to load file");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	60 throw new FileOpException("Unable to load File!");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	61 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	62 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	63
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	64 /* Write the current image to an OutputStream. */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	65 public void writeImage(String mt, OutputStream ostream)
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	66 throws FileOpException {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	67 try {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	68 // setup output
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	69 ParameterBlock pb3 = new ParameterBlock();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	70 pb3.addSource(img);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	71 pb3.add(ostream);
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	72 if (mt == "image/jpeg") {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	73 pb3.add("JPEG");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	74 } else if (mt == "image/png") {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	75 pb3.add("PNG");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	76 } else {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	77 // unknown mime type
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	78 util.dprintln(2, "ERROR(writeImage): Unknown mime type " + mt);
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	79 throw new FileOpException("Unknown mime type: " + mt);
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	80 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	81 // render output
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	82 JAI.create("encode", pb3);
1 0ff3ede32060 Initial revision robcast parents: diff changeset	83
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	84 } catch (IOException e) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	85 throw new FileOpException("Error writing image.");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	86 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	87 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	88
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	89 /* Real setQuality implementation.
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	90 * Creates the correct Interpolation.
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	91 */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	92 public void setQuality(int qual) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	93 quality = qual;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	94 // setup interpolation quality
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	95 if (qual > 1) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	96 util.dprintln(4, "quality q2");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	97 interpol = Interpolation.getInstance(Interpolation.INTERP_BICUBIC);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	98 } else if (qual == 1) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	99 util.dprintln(4, "quality q1");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	100 interpol = Interpolation.getInstance(Interpolation.INTERP_BILINEAR);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	101 } else {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	102 util.dprintln(4, "quality q0");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	103 interpol = Interpolation.getInstance(Interpolation.INTERP_NEAREST);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	104 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	105 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	106
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	107 /** The width of the curent image in pixel.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	108 * @return Image width in pixels.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	109 */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	110 public int getWidth() {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	111 if (img != null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	112 return img.getWidth();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	113 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	114 return 0;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	115 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	116
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	117 /** The height of the curent image in pixel.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	118 * @return Image height in pixels.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	119 */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	120 public int getHeight() {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	121 if (img != null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	122 return img.getHeight();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	123 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	124 return 0;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	125 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	126
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	127 /* scales the current image */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	128 public void scale(double scale) throws ImageOpException {
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	129 float sf = (float) scale;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	130 // setup scale
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	131 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	132 param.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	133 param.add(sf);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	134 param.add(sf);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	135 param.add(0f);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	136 param.add(0f);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	137 param.add(interpol);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	138 // hint with border extender
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	139 RenderingHints hint =
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	140 new RenderingHints(
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	141 JAI.KEY_BORDER_EXTENDER,
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	142 BorderExtender.createInstance(BorderExtender.BORDER_COPY));
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	143
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	144 RenderedImage scaledImg = JAI.create("scale", param, hint);
1 0ff3ede32060 Initial revision robcast parents: diff changeset	145
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	146 //DEBUG
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	147 util.dprintln(
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	148 3,
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	149 "SCALE: "
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	150 + scale
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	151 + " ->"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	152 + scaledImg.getWidth()
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	153 + "x"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	154 + scaledImg.getHeight());
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	155
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	156 if (scaledImg == null) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	157 util.dprintln(2, "ERROR(scale): error in scale");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	158 throw new ImageOpException("Unable to scale");
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	159 }
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	160 img = scaledImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	161 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	162
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	163 /* crops the current image */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	164 public void crop(int x_off, int y_off, int width, int height)
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	165 throws ImageOpException {
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	166 // setup Crop
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	167 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	168 param.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	169 param.add((float) x_off);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	170 param.add((float) y_off);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	171 param.add((float) width);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	172 param.add((float) height);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	173 RenderedImage croppedImg = JAI.create("crop", param);
1 0ff3ede32060 Initial revision robcast parents: diff changeset	174
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	175 util.dprintln(
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	176 3,
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	177 "CROP: "
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	178 + x_off
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	179 + ","
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	180 + y_off
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	181 + ", "
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	182 + width
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	183 + ","
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	184 + height
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	185 + " ->"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	186 + croppedImg.getWidth()
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	187 + "x"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	188 + croppedImg.getHeight());
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	189 //DEBUG
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	190
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	191 if (croppedImg == null) {
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	192 util.dprintln(2, "ERROR(crop): error in crop");
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	193 throw new ImageOpException("Unable to crop");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	194 }
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	195 img = croppedImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	196 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	197
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	198 /* rotates the current image */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	199 public void rotate(double angle) throws ImageOpException {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	200 RenderedImage rotImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	201 // convert degrees to radians
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	202 double rangle = Math.toRadians(angle);
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	203 double x = img.getWidth() / 2;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	204 double y = img.getHeight() / 2;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	205
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	206 // optimize rotation by right angles
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	207 TransposeType rotOp = null;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	208 if (Math.abs(angle - 0) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	209 // 0 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	210 return;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	211 } else if (Math.abs(angle - 90) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	212 // 90 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	213 rotOp = TransposeDescriptor.ROTATE_90;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	214 } else if (Math.abs(angle - 180) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	215 // 180 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	216 rotOp = TransposeDescriptor.ROTATE_180;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	217 } else if (Math.abs(angle - 270) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	218 // 270 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	219 rotOp = TransposeDescriptor.ROTATE_270;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	220 } else if (Math.abs(angle - 360) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	221 // 360 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	222 return;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	223 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	224 if (rotOp != null) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	225 // use Transpose operation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	226 ParameterBlock pb = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	227 pb.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	228 pb.add(rotOp);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	229 rotImg = JAI.create("transpose", pb);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	230 } else {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	231 // setup "normal" rotation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	232 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	233 param.addSource(img);
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	234 param.add((float) x);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	235 param.add((float) y);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	236 param.add((float) rangle);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	237 param.add(interpol);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	238
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	239 rotImg = JAI.create("rotate", param);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	240 }
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	241
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	242 util.dprintln(
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	243 3,
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	244 "ROTATE: "
85 4e6757e8ccd4 New enhanced ImageLoader stuff. robcast parents: 79 diff changeset	245 + x
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	246 + ","
85 4e6757e8ccd4 New enhanced ImageLoader stuff. robcast parents: 79 diff changeset	247 + y
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	248 + ", "
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	249 + angle
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	250 + " ("
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	251 + rangle
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	252 + ")"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	253 + " ->"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	254 + rotImg.getWidth()
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	255 + "x"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	256 + rotImg.getHeight());
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	257 //DEBUG
1 0ff3ede32060 Initial revision robcast parents: diff changeset	258
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	259 if (rotImg == null) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	260 util.dprintln(2, "ERROR: error in rotate");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	261 throw new ImageOpException("Unable to rotate");
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	262 }
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	263 img = rotImg;
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	264 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	265
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	266 /* mirrors the current image
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	267 * works only horizontal and vertical
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	268 */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	269 public void mirror(double angle) throws ImageOpException {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	270 RenderedImage mirImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	271 // only mirroring by right angles
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	272 TransposeType rotOp = null;
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	273 if (Math.abs(angle) < epsilon) {
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	274 // 0 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	275 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	276 } else if (Math.abs(angle - 90) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	277 // 90 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	278 rotOp = TransposeDescriptor.FLIP_VERTICAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	279 } else if (Math.abs(angle - 180) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	280 // 180 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	281 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	282 } else if (Math.abs(angle - 270) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	283 // 270 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	284 rotOp = TransposeDescriptor.FLIP_VERTICAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	285 } else if (Math.abs(angle - 360) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	286 // 360 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	287 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	288 }
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	289 // use Transpose operation
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	290 ParameterBlock param = new ParameterBlock();
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	291 param.addSource(img);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	292 param.add(rotOp);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	293 mirImg = JAI.create("transpose", param);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	294
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	295 if (mirImg == null) {
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	296 util.dprintln(2, "ERROR(mirror): error in flip");
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	297 throw new ImageOpException("Unable to flip");
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	298 }
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	299 img = mirImg;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	300 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	301
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	302 /* contrast and brightness enhancement */
86 997ba69afb81 New version 1.8b1. robcast parents: 85 diff changeset	303 public void enhance(float mult, float add) throws ImageOpException {
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	304 RenderedImage enhImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	305 double[] ma = { mult };
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	306 double[] aa = { add };
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	307 // use Rescale operation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	308 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	309 param.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	310 param.add(ma);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	311 param.add(aa);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	312 enhImg = JAI.create("rescale", param);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	313
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	314 util.dprintln(
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	315 3,
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	316 "ENHANCE: *"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	317 + mult
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	318 + ", +"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	319 + add
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	320 + " ->"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	321 + enhImg.getWidth()
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	322 + "x"
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	323 + enhImg.getHeight());
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	324 //DEBUG
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	325
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	326 if (enhImg == null) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	327 util.dprintln(2, "ERROR(enhance): error in enhance");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	328 throw new ImageOpException("Unable to enhance");
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	329 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	330 img = enhImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	331 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	332
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	333 /* (non-Javadoc)
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	334 * @see digilib.image.DocuImage#enhanceRGB(float[], float[])
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	335 */
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	336 public void enhanceRGB(float[] rgbm, float[] rgba)
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	337 throws ImageOpException {
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	338 RenderedImage enhImg;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	339 int nb = rgbm.length;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	340 double[] ma = new double[nb];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	341 double[] aa = new double[nb];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	342 for (int i = 0; i < nb; i++) {
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	343 ma[i] = rgbm[i];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	344 aa[i] = rgba[i];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	345 }
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	346 // use Rescale operation
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	347 ParameterBlock param = new ParameterBlock();
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	348 param.addSource(img);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	349 param.add(ma);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	350 param.add(aa);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	351 enhImg = JAI.create("rescale", param);
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	352
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	353 util.dprintln(
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	354 3,
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	355 "ENHANCE_RGB: *"
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	356 + rgbm
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	357 + ", +"
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	358 + rgba
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	359 + " ->"
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	360 + enhImg.getWidth()
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	361 + "x"
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	362 + enhImg.getHeight());
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	363 //DEBUG
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	364
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	365 if (enhImg == null) {
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	366 util.dprintln(2, "ERROR(enhance): error in enhanceRGB");
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	367 throw new ImageOpException("Unable to enhanceRGB");
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	368 }
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	369 img = enhImg;
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	370 }
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	371
1 0ff3ede32060 Initial revision robcast parents: diff changeset	372 }

Mercurial > hg > digilib-old

annotate servlet/src/digilib/image/JAIDocuImage.java @ 140:c878ea574c29