Image Data
Each PDF image object is converted to animagedata
element:
<imagedata tag="image-tag" file="image-file-name"/>
The image tag is an arbitrary tag for this image, which will be used
by image and imagemask
elements to refer to the image.
The image data will be written to a file in the output directory. Its
name is given by the file attribute.
Masked images have an additional attribute:
<imagedata tag="image-tag" file="image-file-name" maskfile="mask-file-name"/>
The mask is stored as a separate image file. Note that PDF allows the
mask to be a different resolution than the image.
Images and masks are converted based on the -imagefmt
and -keepjpeg options. The image file extensions will
match the format (".png", ".tiff",
".jpg").