Mercurial > hg > digilib-old
annotate servlet/src/digilib/image/ImageLoaderDocuImage.java @ 566:50f291d808b1 digilibPDF
starting stream support
| author | robcast |
|---|---|
| date | Mon, 20 Dec 2010 11:57:55 +0100 |
| parents | 8beefd1142b2 |
| children | beeedf90cb81 |
| rev | line source |
|---|---|
| 1 | 1 /* ImageLoaderDocuImage -- Image class implementation using JDK 1.4 ImageLoader |
| 2 | |
| 279 | 3 Digital Image Library servlet components |
| 1 | 4 |
| 279 | 5 Copyright (C) 2002, 2003 Robert Casties (robcast@mail.berlios.de) |
| 1 | 6 |
| 279 | 7 This program is free software; you can redistribute it and/or modify it |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Please read license.txt for the full details. A copy of the GPL | |
| 13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
| 1 | 14 |
| 279 | 15 You should have received a copy of the GNU General Public License |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 */ | |
| 1 | 19 |
| 20 package digilib.image; | |
| 21 | |
| 496 | 22 import java.awt.Image; |
| 85 | 23 import java.awt.Rectangle; |
| 207 | 24 import java.awt.RenderingHints; |
| 73 | 25 import java.awt.geom.AffineTransform; |
| 101 | 26 import java.awt.geom.Rectangle2D; |
| 73 | 27 import java.awt.image.AffineTransformOp; |
| 28 import java.awt.image.BufferedImage; | |
| 144 | 29 import java.awt.image.ConvolveOp; |
| 30 import java.awt.image.Kernel; | |
| 85 | 31 import java.awt.image.RescaleOp; |
| 73 | 32 import java.io.File; |
| 33 import java.io.IOException; | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
34 import java.io.OutputStream; |
| 89 | 35 import java.io.RandomAccessFile; |
| 464 | 36 import java.util.Arrays; |
| 85 | 37 import java.util.Iterator; |
| 1 | 38 |
| 352 | 39 import javax.imageio.IIOImage; |
| 73 | 40 import javax.imageio.ImageIO; |
| 85 | 41 import javax.imageio.ImageReadParam; |
| 42 import javax.imageio.ImageReader; | |
| 352 | 43 import javax.imageio.ImageWriteParam; |
| 44 import javax.imageio.ImageWriter; | |
| 220 | 45 import javax.imageio.stream.FileImageInputStream; |
| 85 | 46 import javax.imageio.stream.ImageInputStream; |
| 352 | 47 import javax.imageio.stream.ImageOutputStream; |
| 1 | 48 |
| 207 | 49 import digilib.io.FileOpException; |
| 464 | 50 import digilib.io.FileOps; |
| 159 | 51 import digilib.io.ImageFile; |
| 464 | 52 import digilib.io.ImageFileset; |
| 566 | 53 import digilib.io.ImageInput; |
| 1 | 54 |
| 73 | 55 /** Implementation of DocuImage using the ImageLoader API of Java 1.4 and Java2D. */ |
| 564 | 56 public class ImageLoaderDocuImage extends ImageInfoDocuImage { |
| 279 | 57 |
| 86 | 58 /** image object */ |
| 59 protected BufferedImage img; | |
| 279 | 60 |
| 86 | 61 /** interpolation type */ |
| 207 | 62 protected RenderingHints renderHint; |
| 279 | 63 |
| 86 | 64 /** ImageIO image reader */ |
| 65 protected ImageReader reader; | |
| 279 | 66 |
| 86 | 67 /** File that was read */ |
| 68 protected File imgFile; | |
| 85 | 69 |
| 70 /* loadSubimage is supported. */ | |
| 71 public boolean isSubimageSupported() { | |
| 72 return true; | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
73 } |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
74 |
| 85 | 75 public void setQuality(int qual) { |
| 76 quality = qual; | |
| 207 | 77 renderHint = new RenderingHints(null); |
| 352 | 78 // hint.put(RenderingHints.KEY_ANTIALIASING, |
| 279 | 79 // RenderingHints.VALUE_ANTIALIAS_OFF); |
| 85 | 80 // setup interpolation quality |
| 81 if (qual > 0) { | |
| 181 | 82 logger.debug("quality q1"); |
| 279 | 83 renderHint.put(RenderingHints.KEY_INTERPOLATION, |
| 84 RenderingHints.VALUE_INTERPOLATION_BICUBIC); | |
| 85 | 85 } else { |
| 181 | 86 logger.debug("quality q0"); |
| 279 | 87 renderHint.put(RenderingHints.KEY_INTERPOLATION, |
| 88 RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR); | |
| 85 | 89 } |
| 90 } | |
| 86 | 91 |
| 85 | 92 public int getHeight() { |
| 93 int h = 0; | |
| 94 try { | |
| 95 if (img == null) { | |
| 96 h = reader.getHeight(0); | |
| 97 } else { | |
| 98 h = img.getHeight(); | |
| 99 } | |
| 100 } catch (IOException e) { | |
| 181 | 101 logger.debug("error in getHeight", e); |
| 85 | 102 } |
| 103 return h; | |
| 104 } | |
| 105 | |
| 106 public int getWidth() { | |
| 107 int w = 0; | |
| 108 try { | |
| 109 if (img == null) { | |
| 110 w = reader.getWidth(0); | |
| 111 } else { | |
| 112 w = img.getWidth(); | |
| 113 } | |
| 114 } catch (IOException e) { | |
| 181 | 115 logger.debug("error in getHeight", e); |
| 85 | 116 } |
| 117 return w; | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
118 } |
| 1 | 119 |
| 464 | 120 /* returns a list of supported image formats */ |
| 531 | 121 public Iterator<String> getSupportedFormats() { |
| 464 | 122 String[] formats = ImageIO.getReaderFormatNames(); |
| 123 return Arrays.asList(formats).iterator(); | |
| 124 } | |
| 125 | |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
126 /** Check image size and type and store in ImageFile f */ |
| 566 | 127 public ImageInput identify(ImageFile imageFile) throws IOException { |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
128 // try parent method first |
| 566 | 129 ImageInput imf = super.identify(imageFile); |
| 563 | 130 if (imf != null) { |
| 131 return imf; | |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
132 } |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
133 // fileset to store the information |
| 563 | 134 ImageFileset imgfs = imageFile.getParent(); |
| 135 File f = imageFile.getFile(); | |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
136 if (f == null) { |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
137 throw new IOException("File not found!"); |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
138 } |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
139 logger.debug("identifying (ImageIO) " + f); |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
140 /* |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
141 * try ImageReader |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
142 */ |
| 564 | 143 if ((reader == null) || (imgFile != imageFile.getFile())) { |
| 144 getReader(imageFile); | |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
145 } |
| 564 | 146 ImageSize d = new ImageSize(reader.getWidth(0), reader.getHeight(0)); |
| 147 imageFile.setSize(d); | |
| 148 // String t = reader.getFormatName(); | |
| 149 String t = FileOps.mimeForFile(f); | |
| 150 imageFile.setMimetype(t); | |
| 151 // logger.debug(" format:"+t); | |
| 152 if (imgfs != null) { | |
| 153 imgfs.setAspect(d); | |
| 154 } | |
| 155 return imageFile; | |
|
462
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
156 } |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
157 |
|
03ff7238c9d4
second try for flashpix support (doesn't work currently...)
robcast
parents:
402
diff
changeset
|
158 /* load image file */ |
| 159 | 159 public void loadImage(ImageFile f) throws FileOpException { |
| 279 | 160 logger.debug("loadImage " + f.getFile()); |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
161 try { |
| 149 | 162 img = ImageIO.read(f.getFile()); |
|
543
919e008ab1fb
more steps towards more standard java.util.concurrent design
robcast
parents:
536
diff
changeset
|
163 mimeType = f.getMimetype(); |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
164 } catch (IOException e) { |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
165 throw new FileOpException("Error reading image."); |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
166 } |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
167 } |
| 1 | 168 |
| 279 | 169 /** |
| 170 * Get an ImageReader for the image file. | |
| 171 * | |
| 172 * @return | |
| 173 */ | |
| 174 public ImageReader getReader(ImageFile f) throws IOException { | |
| 175 logger.debug("preloadImage " + f.getFile()); | |
| 148 | 176 if (reader != null) { |
| 207 | 177 logger.debug("Reader was not null!"); |
| 148 | 178 // clean up old reader |
| 207 | 179 dispose(); |
| 148 | 180 } |
| 149 | 181 RandomAccessFile rf = new RandomAccessFile(f.getFile(), "r"); |
| 220 | 182 ImageInputStream istream = new FileImageInputStream(rf); |
| 565 | 183 Iterator<ImageReader> readers; |
| 279 | 184 String mt = f.getMimetype(); |
| 565 | 185 if (mt == null) { |
| 186 logger.debug("No mime-type. Trying automagic."); | |
| 187 readers = ImageIO.getImageReaders(istream); | |
| 188 } else { | |
| 189 logger.debug("File type:" + mt); | |
| 190 readers = ImageIO.getImageReadersByMIMEType(mt); | |
| 191 } | |
| 279 | 192 if (!readers.hasNext()) { |
| 564 | 193 rf.close(); |
| 565 | 194 throw new FileOpException("Can't find Reader to load File!"); |
| 279 | 195 } |
| 531 | 196 reader = readers.next(); |
| 149 | 197 /* are there more readers? */ |
| 207 | 198 logger.debug("ImageIO: this reader: " + reader.getClass()); |
| 564 | 199 /* while (readers.hasNext()) { |
| 207 | 200 logger.debug("ImageIO: next reader: " + readers.next().getClass()); |
| 564 | 201 } */ |
| 89 | 202 reader.setInput(istream); |
| 149 | 203 imgFile = f.getFile(); |
| 279 | 204 return reader; |
| 85 | 205 } |
| 206 | |
| 207 /* Load an image file into the Object. */ | |
| 159 | 208 public void loadSubimage(ImageFile f, Rectangle region, int prescale) |
| 279 | 209 throws FileOpException { |
| 207 | 210 logger.debug("loadSubimage"); |
| 85 | 211 try { |
| 149 | 212 if ((reader == null) || (imgFile != f.getFile())) { |
| 279 | 213 getReader(f); |
| 85 | 214 } |
| 215 // set up reader parameters | |
| 216 ImageReadParam readParam = reader.getDefaultReadParam(); | |
| 217 readParam.setSourceRegion(region); | |
| 220 | 218 if (prescale > 1) { |
| 219 readParam.setSourceSubsampling(prescale, prescale, 0, 0); | |
| 220 } | |
| 85 | 221 // read image |
| 207 | 222 logger.debug("loading.."); |
| 85 | 223 img = reader.read(0, readParam); |
|
543
919e008ab1fb
more steps towards more standard java.util.concurrent design
robcast
parents:
536
diff
changeset
|
224 mimeType = f.getMimetype(); |
| 207 | 225 logger.debug("loaded"); |
| 85 | 226 } catch (IOException e) { |
| 227 throw new FileOpException("Unable to load File!"); | |
| 228 } | |
| 229 } | |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
230 |
| 86 | 231 /* write image of type mt to Stream */ |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
232 public void writeImage(String mt, OutputStream ostream) |
| 279 | 233 throws FileOpException { |
| 207 | 234 logger.debug("writeImage"); |
| 353 | 235 // setup output |
| 236 ImageWriter writer = null; | |
| 237 ImageOutputStream imgout = null; | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
238 try { |
| 353 | 239 imgout = ImageIO.createImageOutputStream(ostream); |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
240 if (mt == "image/jpeg") { |
| 352 | 241 /* |
| 242 * JPEG doesn't do transparency so we have to convert any RGBA | |
| 243 * image to RGB :-( *Java2D BUG* | |
| 244 */ | |
| 245 if (img.getColorModel().hasAlpha()) { | |
| 246 logger.debug("BARF: JPEG with transparency!!"); | |
| 247 int w = img.getWidth(); | |
| 248 int h = img.getHeight(); | |
| 249 // BufferedImage.TYPE_INT_RGB seems to be fastest (JDK1.4.1, | |
| 250 // OSX) | |
| 251 int destType = BufferedImage.TYPE_INT_RGB; | |
| 252 BufferedImage img2 = new BufferedImage(w, h, destType); | |
| 253 img2.createGraphics().drawImage(img, null, 0, 0); | |
| 254 img = img2; | |
| 255 } | |
| 256 writer = (ImageWriter) ImageIO.getImageWritersByFormatName( | |
| 257 "jpeg").next(); | |
| 258 if (writer == null) { | |
| 259 throw new FileOpException("Unable to get JPEG writer"); | |
| 260 } | |
| 261 ImageWriteParam param = writer.getDefaultWriteParam(); | |
| 262 if (quality > 1) { | |
| 263 // change JPEG compression quality | |
| 353 | 264 param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); |
|
469
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
265 //logger.debug("JPEG qual before: " |
|
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
266 // + Float.toString(param.getCompressionQuality())); |
| 352 | 267 param.setCompressionQuality(0.9f); |
|
469
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
268 //logger.debug("JPEG qual now: " |
|
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
269 // + Float.toString(param.getCompressionQuality())); |
| 352 | 270 } |
| 271 writer.setOutput(imgout); | |
| 272 // render output | |
| 273 logger.debug("writing"); | |
| 274 writer.write(null, new IIOImage(img, null, null), param); | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
275 } else if (mt == "image/png") { |
| 352 | 276 // render output |
| 277 writer = (ImageWriter) ImageIO.getImageWritersByFormatName( | |
| 278 "png").next(); | |
| 279 if (writer == null) { | |
| 280 throw new FileOpException("Unable to get PNG writer"); | |
| 281 } | |
| 282 writer.setOutput(imgout); | |
| 283 logger.debug("writing"); | |
| 284 writer.write(img); | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
285 } else { |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
286 // unknown mime type |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
287 throw new FileOpException("Unknown mime type: " + mt); |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
288 } |
| 140 | 289 |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
290 } catch (IOException e) { |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
291 throw new FileOpException("Error writing image."); |
| 353 | 292 } finally { |
| 293 // clean up | |
| 294 if (writer != null) { | |
| 295 writer.dispose(); | |
| 296 } | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
297 } |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
298 } |
| 1 | 299 |
| 149 | 300 public void scale(double scale, double scaleY) throws ImageOpException { |
| 207 | 301 logger.debug("scale"); |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
302 /* for downscaling in high quality the image is blurred first */ |
| 144 | 303 if ((scale <= 0.5) && (quality > 1)) { |
| 304 int bl = (int) Math.floor(1 / scale); | |
| 305 blur(bl); | |
| 306 } | |
| 207 | 307 /* then scaled */ |
| 279 | 308 AffineTransformOp scaleOp = new AffineTransformOp(AffineTransform |
| 309 .getScaleInstance(scale, scale), renderHint); | |
| 144 | 310 BufferedImage scaledImg = null; |
| 565 | 311 /* enforce destination image type (*Java2D BUG*) |
| 220 | 312 int type = img.getType(); |
| 279 | 313 if ((quality > 0) && (type != 0)) { |
| 207 | 314 logger.debug("creating destination image"); |
| 144 | 315 Rectangle2D dstBounds = scaleOp.getBounds2D(img); |
| 279 | 316 scaledImg = new BufferedImage((int) dstBounds.getWidth(), |
| 317 (int) dstBounds.getHeight(), type); | |
| 565 | 318 } */ |
| 207 | 319 logger.debug("scaling..."); |
| 144 | 320 scaledImg = scaleOp.filter(img, scaledImg); |
| 207 | 321 if (scaledImg == null) { |
| 322 throw new ImageOpException("Unable to scale"); | |
| 323 } | |
| 352 | 324 // DEBUG |
|
469
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
325 logger.debug("destination image type " + scaledImg.getType()); |
| 279 | 326 logger.debug("SCALE: " + scale + " ->" + scaledImg.getWidth() + "x" |
| 144 | 327 + scaledImg.getHeight()); |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
328 img = scaledImg; |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
329 } |
| 1 | 330 |
| 144 | 331 public void blur(int radius) throws ImageOpException { |
| 352 | 332 // DEBUG |
| 181 | 333 logger.debug("blur: " + radius); |
| 144 | 334 // minimum radius is 2 |
| 335 int klen = Math.max(radius, 2); | |
| 220 | 336 // FIXME: use constant kernels for most common sizes |
| 144 | 337 int ksize = klen * klen; |
| 338 // kernel is constant 1/k | |
| 339 float f = 1f / ksize; | |
| 340 float[] kern = new float[ksize]; | |
| 341 for (int i = 0; i < ksize; i++) { | |
| 342 kern[i] = f; | |
| 343 } | |
| 344 Kernel blur = new Kernel(klen, klen, kern); | |
| 345 // blur with convolve operation | |
| 279 | 346 ConvolveOp blurOp = new ConvolveOp(blur, ConvolveOp.EDGE_NO_OP, |
| 347 renderHint); | |
| 565 | 348 BufferedImage blurredImg = null; |
| 145 | 349 // blur needs explicit destination image type for color *Java2D BUG* |
| 350 if (img.getType() == BufferedImage.TYPE_3BYTE_BGR) { | |
| 565 | 351 logger.debug("blur: fixing destination image type"); |
| 279 | 352 blurredImg = new BufferedImage(img.getWidth(), img.getHeight(), img |
| 353 .getType()); | |
| 145 | 354 } |
| 355 blurredImg = blurOp.filter(img, blurredImg); | |
| 144 | 356 img = blurredImg; |
| 357 } | |
| 358 | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
359 public void crop(int x_off, int y_off, int width, int height) |
| 279 | 360 throws ImageOpException { |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
361 // setup Crop |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
362 BufferedImage croppedImg = img.getSubimage(x_off, y_off, width, height); |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
363 if (croppedImg == null) { |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
364 throw new ImageOpException("Unable to crop"); |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
365 } |
|
469
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
366 logger.debug("CROP:" + croppedImg.getWidth() + "x" |
|
11e11fe4d680
Improved performance of JAIDocuImage for large images
robcast
parents:
464
diff
changeset
|
367 + croppedImg.getHeight()); |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
368 img = croppedImg; |
|
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
369 } |
| 1 | 370 |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
371 public void enhance(float mult, float add) throws ImageOpException { |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
372 /* |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
373 * Only one constant should work regardless of the number of bands |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
374 * according to the JDK spec. Doesn't work on JDK 1.4 for OSX and Linux |
| 279 | 375 * (at least). RescaleOp scaleOp = new RescaleOp( (float)mult, |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
376 * (float)add, null); scaleOp.filter(img, img); |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
377 */ |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
378 |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
379 /* The number of constants must match the number of bands in the image. */ |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
380 int ncol = img.getColorModel().getNumComponents(); |
| 86 | 381 float[] dm = new float[ncol]; |
| 382 float[] da = new float[ncol]; | |
| 383 for (int i = 0; i < ncol; i++) { | |
| 384 dm[i] = (float) mult; | |
| 385 da[i] = (float) add; | |
| 85 | 386 } |
| 86 | 387 RescaleOp scaleOp = new RescaleOp(dm, da, null); |
| 85 | 388 scaleOp.filter(img, img); |
| 389 } | |
| 390 | |
| 279 | 391 public void enhanceRGB(float[] rgbm, float[] rgba) throws ImageOpException { |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
392 /* |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
393 * The number of constants must match the number of bands in the image. |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
394 * We do only 3 (RGB) bands. |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
395 */ |
| 86 | 396 int ncol = img.getColorModel().getNumColorComponents(); |
| 397 if ((ncol != 3) || (rgbm.length != 3) || (rgba.length != 3)) { | |
| 279 | 398 logger |
| 399 .debug("ERROR(enhance): unknown number of color bands or coefficients (" | |
| 400 + ncol + ")"); | |
| 86 | 401 return; |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
402 } |
| 279 | 403 RescaleOp scaleOp = new RescaleOp(rgbOrdered(rgbm), rgbOrdered(rgba), |
| 404 null); | |
| 86 | 405 scaleOp.filter(img, img); |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
406 } |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
407 |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
408 /** |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
409 * Ensures that the array f is in the right order to map the images RGB |
| 279 | 410 * components. (not shure what happens |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
411 */ |
| 86 | 412 public float[] rgbOrdered(float[] fa) { |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
413 /* |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
414 * TODO: this is UGLY, UGLY!! |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
415 */ |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
416 float[] fb; |
| 86 | 417 int t = img.getType(); |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
418 if (img.getColorModel().hasAlpha()) { |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
419 fb = new float[4]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
420 if ((t == BufferedImage.TYPE_INT_ARGB) |
| 279 | 421 || (t == BufferedImage.TYPE_INT_ARGB_PRE)) { |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
422 // RGB Type |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
423 fb[0] = fa[0]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
424 fb[1] = fa[1]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
425 fb[2] = fa[2]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
426 fb[3] = 1f; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
427 } else { |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
428 // this isn't tested :-( |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
429 fb[0] = 1f; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
430 fb[1] = fa[0]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
431 fb[2] = fa[1]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
432 fb[3] = fa[2]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
433 } |
| 86 | 434 } else { |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
435 fb = new float[3]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
436 if (t == BufferedImage.TYPE_3BYTE_BGR) { |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
437 // BGR Type (actually it looks like RBG...) |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
438 fb[0] = fa[0]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
439 fb[1] = fa[2]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
440 fb[2] = fa[1]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
441 } else { |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
442 fb[0] = fa[0]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
443 fb[1] = fa[1]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
444 fb[2] = fa[2]; |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
445 } |
| 86 | 446 } |
| 447 return fb; | |
| 85 | 448 } |
| 449 | |
| 140 | 450 public void rotate(double angle) throws ImageOpException { |
| 89 | 451 // setup rotation |
| 452 double rangle = Math.toRadians(angle); | |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
453 // create offset to make shure the rotated image has no negative |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
454 // coordinates |
| 101 | 455 double w = img.getWidth(); |
| 456 double h = img.getHeight(); | |
| 103 | 457 AffineTransform trafo = new AffineTransform(); |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
458 // center of rotation |
| 103 | 459 double x = (w / 2); |
| 460 double y = (h / 2); | |
| 101 | 461 trafo.rotate(rangle, x, y); |
| 103 | 462 // try rotation to see how far we're out of bounds |
| 207 | 463 AffineTransformOp rotOp = new AffineTransformOp(trafo, renderHint); |
| 103 | 464 Rectangle2D rotbounds = rotOp.getBounds2D(img); |
| 465 double xoff = rotbounds.getX(); | |
| 466 double yoff = rotbounds.getY(); | |
| 467 // move image back in line | |
| 565 | 468 trafo.preConcatenate(AffineTransform.getTranslateInstance(-xoff, -yoff)); |
| 101 | 469 // transform image |
| 207 | 470 rotOp = new AffineTransformOp(trafo, renderHint); |
| 89 | 471 BufferedImage rotImg = rotOp.filter(img, null); |
| 101 | 472 // calculate new bounding box |
| 352 | 473 // Rectangle2D bounds = rotOp.getBounds2D(img); |
| 103 | 474 img = rotImg; |
| 101 | 475 // crop new image (with self-made rounding) |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
476 /* |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
477 * img = rotImg.getSubimage( (int) (bounds.getX()+0.5), (int) |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
478 * (bounds.getY()+0.5), (int) (bounds.getWidth()+0.5), (int) |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
479 * (bounds.getHeight()+0.5)); |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
480 */ |
| 86 | 481 } |
| 85 | 482 |
| 89 | 483 public void mirror(double angle) throws ImageOpException { |
| 484 // setup mirror | |
| 485 double mx = 1; | |
| 486 double my = 1; | |
| 487 double tx = 0; | |
| 488 double ty = 0; | |
| 144 | 489 if (Math.abs(angle - 0) < epsilon) { // 0 degree |
| 89 | 490 mx = -1; |
| 491 tx = getWidth(); | |
| 144 | 492 } else if (Math.abs(angle - 90) < epsilon) { // 90 degree |
| 89 | 493 my = -1; |
| 494 ty = getHeight(); | |
| 144 | 495 } else if (Math.abs(angle - 180) < epsilon) { // 180 degree |
| 89 | 496 mx = -1; |
| 497 tx = getWidth(); | |
| 144 | 498 } else if (Math.abs(angle - 270) < epsilon) { // 270 degree |
| 89 | 499 my = -1; |
| 500 ty = getHeight(); | |
| 144 | 501 } else if (Math.abs(angle - 360) < epsilon) { // 360 degree |
| 89 | 502 mx = -1; |
| 503 tx = getWidth(); | |
| 504 } | |
| 279 | 505 AffineTransformOp mirOp = new AffineTransformOp(new AffineTransform(mx, |
| 506 0, 0, my, tx, ty), renderHint); | |
| 89 | 507 BufferedImage mirImg = mirOp.filter(img, null); |
| 508 img = mirImg; | |
|
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
509 } |
| 86 | 510 |
| 279 | 511 /* |
| 512 * (non-Javadoc) | |
| 513 * | |
| 514 * @see java.lang.Object#finalize() | |
| 515 */ | |
| 148 | 516 protected void finalize() throws Throwable { |
| 207 | 517 dispose(); |
| 518 super.finalize(); | |
| 519 } | |
| 520 | |
| 521 public void dispose() { | |
|
170
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
522 // we must dispose the ImageReader because it keeps the filehandle |
|
d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
robcast
parents:
159
diff
changeset
|
523 // open! |
| 256 | 524 if (reader != null) { |
| 525 reader.dispose(); | |
| 526 reader = null; | |
| 527 } | |
| 148 | 528 img = null; |
| 529 } | |
| 530 | |
| 533 | 531 public Image getAwtImage(){ |
| 496 | 532 return (Image) img; |
| 533 } | |
| 534 | |
| 535 | |
| 1 | 536 } |