Instructions for cutting out images

1. The figures should be cut out of the TIFF-images, rather than the compressed JPG-images in online_permanent/library on foxridge. The Digigroup should know where the relevant images are.
2. Do not cut out drop caps or embellishments, e. g. decorative images on the title page
3. If there is already an xml-version of the text, it is handy to extract a list of all figures that are to be cut out. You can do this for example by using XQuery in the display system:

   //echo:figure
   

   resp.

   //echo:image
   

   Depending on how much context you like (with caption or not).
4. Now, in the viewing environment, you can browse through the book, visiting the respective pages and mark the images using digilib's "zoom area" tool. Be careful not to cut out surrounding text, including the catchword at the bottom of the page. However, captions are to be cut out, as well. Some small images are only there for decorative purposes. The policy is not to cut out these ones. Lateron, these have to be deleted from the xml file.
5. Save the URLs of the pages with the zoomed area into a text file. Also, note in the file which images have to be removed from the XML. The list should be stored somewhere for future reference (e. g. in case the figures are not produced by cutting the files, but by extracting the figures on the fly). The first list was generated for ​Apian 1550.
6. On the basis of this text file, the Python script cut_images.py (attached to this page) takes care of cutting out the images from the original TIFF files and saves them in the desired format page-imagenumber (e. g., if pageimage 0056.tif has three figures, these figures will be saved as 0056-01.tif, 0056-02.tif and 0056-03.tif), by calling Imagemagick's commands identify and convert. They are stored in a folder called figures
7. This folder is then uploaded to the foxridge server alongside the pageimg-folder of the respective book: folder online_permanent/library/XXXXXXXX will then contain both a pageimg and a figures folder.
8. It should be made sure that the excluded images are removed from the XML file.

Discussion

1. Should an ​Ex libris be cut out?
2. Should this be treated as one image: ​Apian 1550? Otherwise, spatial information might get lost (see text version of that page)
3. Data entry tagged every single figure ​on this page. Should this be preserved? Probably yes, as some figures have variables attached (see text version)

Number of figures per document

(NB: the numbers are based on the figure-tags in the xml document which again are based on the fig-tags typed in by the data entry firm. Deciding on what counts as a figure is an intellectual process and cannot be decided by the data entry. Thus, the number of figures per document can differ slightly.)

Book	Figures
/echo/de/Adams_1785_S7ECRGW8.xml	108
/echo/de/Bernstein_1897_01-05_GGAGCX1B.xml	102
/echo/de/Bernstein_1897_06-11_PWVX6XFT.xml	117
/echo/de/Bernstein_1897_12-16_X323E11C.xml	68
/echo/de/Bernstein_1897_17-21_HQ8URX9E.xml	126
/echo/de/Bion_1765_TGXUZC1H.xml	434
/echo/de/Boskovic_1765_YPS3EYQ2.xml	29
/echo/de/Lehmann-Brockhaus_1983.xml	415
/echo/de/Specklin_1599_SSM0YQED.xml	130
/echo/en/Apollonius_1771_FDWQ9FD5.xml	27
/echo/en/Bacon_1670_WX8HY2V2.xml	19
/echo/en/Gravesande_1724_N1TU6UZF.xml	82
/echo/en/Wilkins_1684_TG3ZW27M.xml	17
/echo/fr/Belidor_1754_M1R3K3S6.xml	68
/echo/fr/Belidor_1757_R04RNX9Y.xml	68
/echo/fr/Berzelius_1819_WCWY69V2.xml	2
/echo/fr/Mersenne_1635_508_fr.xml	61
/echo/fr/Papin_1682_A8SP3HCB.xml	25
/echo/fr/Ufano_1628_QXRZU2BV.xml	68
/echo/fr/Varignon_1687_TP04WPNS.xml	62
/echo/fr/Vitruvius_1618_3XFC5KGV.xml	125
/echo/fr/Voltaire_1738_1FP6HWGK.xml	123
/echo/it/Alberti_1565_5PPYB69C.xml	105
/echo/it/Angeli_1668a.xml	27
/echo/it/Angeli_1668b.xml	13
/echo/it/Angeli_1671.xml	37
/echo/it/Benedetti_1579_507_it.xml	1
/echo/it/Bianconi_1746.xml	5
/echo/it/Casati_1685_1YZKBTHR.xml	75
/echo/it/Cataneo_1567_DSDY9XH0.xml	69
/echo/it/Cataneo_1572_ZBAS6ZM1.xml	129
/echo/it/Cavalieri_1632_CE3XGS5P.xml	30
/echo/it/Gallaccini_1767_D09WWP72.xml	224
/echo/it/Heron_1601_M5C8103Y.xml	34
/echo/it/Vitruvius_1524_ZFRVKXMF.xml	135
/echo/it/Vitruvius_1556_XYTWCGV1.xml	168
/echo/it/Vitruvius_1747_Y1G1TRCW.xml	14
/echo/it/Zanotti_1752_16HBZHF5.xml	2
/echo/it/Zonca_1656_UR271U6Y.xml	55
/echo/la/Angeli_1659.xml	92
/echo/la/Apian_1541_9TE6563P.xml	12
/echo/la/Apian_1550_PUBSU9QD.xml	69
/echo/la/Apollonius_1661_1X8T70WB.xml	526
/echo/la/Archimedes_1565.xml	151
/echo/la/Archimedes_1565_YS05QMU8.xml	38
/echo/la/Aristoteles_1547.xml	13
/echo/la/Aristoteles_1548_9NN63YC9.xml	1
/echo/la/Barrow_1674.xml	40
/echo/la/Benedetti_1585.xml	444
/echo/la/Bernoulli_1738_AZ870BWE.xml	28
/echo/la/Biancani_1635_GWS4WXH4.xml	147
/echo/la/Casati_1686_UEY6QQZ7.xml	18
/echo/la/Cataneo_1600.xml	117
/echo/la/Cavalieri_1653.xml	370
/echo/la/Clavius_1581_MXTKM8TF.xml	432
/echo/la/Clavius_1586.xml	372
/echo/la/Clavius_1591_DP9UZA52.xml	104
/echo/la/Clavius_1606_FBVYV7EH.xml	294
/echo/la/Ghetaldi_1603_FQPFR8XP.xml	23
/echo/la/Gravesande_1721_KN9XTZRQ.xml	98
/echo/la/Heron_1680_C3M2XK8N.xml	98
/echo/la/Huygens_1724_1_BYCAB3V6.xml	168
/echo/la/Huygens_1724_2_Y97ESDAP.xml	241
/echo/la/Musschenbroek_1729_H9ZYCGQ0.xml	32
/echo/la/Stevin_1605_527_la.xml	251
/echo/la/Vitruvius_1490_4YSU4X91.xml	1
/echo/la/Vitruvius_1511_XS9KA6WS.xml	136
/echo/la/Vitruvius_1543_T05R2RPS.xml	91
/echo/la/Vitruvius_1544_2UZM8E2N.xml	64
/echo/la/Vitruvius_1552_UNCWSTHE.xml	107
/echo/la/Vitruvius_1567_514_la.xml	174
/echo/la/Vitruvius_1800_V82APKX9.xml	1
/echo/la/Viviani_1659.xml	272
/echo/la/Weidler_1726_NSW2F6PF.xml	17
/echo/la/Zubler_1607_DNYGYWGH.xml	20
/echo/la/alvarus_1509.xml	14
/echo/zh/SongYingxing_1637.xml	160
Total:	8635