This looks like a bug in poppler.
pdfimages -f 1 -l 1 icse98.pdf x
creates x-000.pbm
display x-000.pbm
also shows the image flipped vertically.
This looks like a bug in poppler.
pdfimages -f 1 -l 1 icse98.pdf x
creates x-000.pbm
display x-000.pbm
also shows the image flipped vertically.