Save custom TIFF tags in LZW-compressed TIFFs #660
Description
If I understand correctly, the recent changes (#369) have not made it possible to write custom TIFF tags. I would like to do the following:
info = TiffImagePlugin.ImageFileDirectory()
CustomTagId = 37000
info[CustomTagId] = 6
info.tagtype[CustomTagId] = 3 # 'short' according to TiffTags.TYPES
img.save(pathname, tiffinfo = info)This corresponds to "Defining Application Tags" in http://www.remotesensing.org/libtiff/addingtags.html.