Error on lossy jbig2 encoding

[Tingwb]

Hi,

With lossy compression I get error result, the image in the attached file missing some paths.
the attached file is as follows：
0005707_spring hill00021.pdf

The encoding result is as follows: the original image on the left and the resulting image on the right.
This is the result of reversing image data and then doing JBIG2 compression.
Jbig2_FirstResverDataThenEncoding.pdf

If the image data is not reversed, jbig2 encoded results processed by PDF decode are as follows:
Jbig2_NoResverDate.pdf

I do not now how to deal with it. Any help will be very much appreciated.

[zvezdochiot]

Hi @zdenop .

This error does not occur in standalone mode, only in symbol mode.

Standalone mode:

jbig2 -a -p -D 200 -v plan01.tif > plan01.jbig2 && python3 jbig2topdf.py -s plan01.jbig2 > plan01.pdf

PDF	Screen
plan01-posiztive.pdf
plan01-negative.pdf