On Thu, May 16, 2019 at 02:40:07PM +0200, Hans Hagen wrote:
On 5/16/2019 12:21 PM, Rudolf Bahr wrote:
The problem with artefacts in .png images is still unsolved for me. I can circumvent it by using .jpg or .tiff images instead of .png images as long as no transparent areas in the images are needed. As far as I know .jpg and .tiff formats cannot handle transparancy, do they?
Now in .log files messages like "luatex warning > pdfe: invalid 11 0 R object at offset 223611" can be seen. Please, what do they mean?
Does that come from an pdf generated by image magick>? If so, the problem is there ... the last years I've seen lots of converted files with bogus pdf objects. (Kind of harmless but still.)
Hans
No. I never use neither ImageMagick nor GraphicsMagick to generate images in .pdf-format. Even with my scanner software I produce always .jpg-images though it is capable to produce .pdf-output too. The only .pdf-files I'm doing are made by ConTeXt-LMTX! I shall append another, interesting MWE. There is a .png-image which is, as it occasionally happens, represented as it should, by ConTeXt. And then the same .png-image to which I added a red frame by GIMP2.10. This one shows artefacts in ConTeXt! I'm adding the .log-file too. There again is a luatex-warning, as I could observe them often in ConTeXt-LMTX: ------------------------------------------------------------- luatex warning > pdfe: invalid 11 0 R object at offset 41603 ------------------------------------------------------------- Please, what does mean it? I fear there is something wrong with the .png-handling of ConTeXt/luatex. The outputs of feh image----red-frame.png gm display image----red-frame.png are looking ok. And GIMP2.10 has produced all image-files. Rudolf PS.: echo $PATH /home/sam/Android/platform-tools:/bin:/usr/bin:/home/sam/context-lmtx/tex/texmf-linux-64/bin:/home/sam/context-lmtx/bin:/home/sam/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games The .tiff-image is always too big for this forums upper limit
