Well yes, that's because I changed it. It's a config file. Config files are designed to be changed. I find your suggestion strange because specifying the page seg mode is exactly what I did in my config. Then you told me I shouldn't have changed my config.
On Friday, March 29, 2019 at 12:04:17 PM UTC-5, shree wrote: > > https://github.com/tesseract-ocr/tesseract/blob/master/tessdata/configs/pdf > > This is different from your installed version. > > On Fri, 29 Mar 2019, 22:30 Shree Devi Kumar, <[email protected] > <javascript:>> wrote: > >> The default page segmentation mode is different for command line and api. >> Specify it explicitly and test. >> >> On Fri, 29 Mar 2019, 22:12 Lucas L., <[email protected] <javascript:>> >> wrote: >> >>> OK, I am running up against another issue, and it's getting weirder. >>> Since Tesseract does not take PDFs as input, this service does the deed of >>> breaking a PDF into pages, and then converting each of those pages to an >>> image format (either lzw-compressed TIFF or uncompressed PPM if that >>> fails). Somehow, if I run ImageMagick and then Tesseract on these pages >>> individually from a command line using the same parameters in the service >>> code, it runs fine processing the TIFF. But when the service runs, I get: >>> Error in fopenWriteStream: stream not opened >>> Error in pixWrite: stream not opened >>> >>> And the output pdf has all of the pages and they are not mangled... >>> however they are shrunk into a tiny corner of the page. I have attached the >>> resulting file. I feel that it is obvious from the fact that it works when >>> I run it outside the service that it is a code issue... however I really am >>> not sure what it could be doing differently from my command line. The pages >>> come out looking great when I run tesseract on the individual pages >>> manually. The errors do not appear when I run the command lines manually. >>> >>> The command lines and params I am using: >>> >>> Convert the input PDF (which is scanned and has no OCR layer) to input >>> image: >>> convert -depth 16 -density 300 -colorspace RGB -despeckle -flatten >>> -compress >>> lzw -background white -alpha off "/path/pg_0010.pdf" "/path/pg_0010.tif" >>> Process the input image for OCR and output to PDF: >>> tesseract -l eng "/path/pg_0010.tif" "/path/pg_0010" pdf >>> >>> Configuration parameters from /usr/share/tesseract-ocr/4.00/tessdata/ >>> configs >>> tessedit_create_pdf 1 >>> tessedit_pageseg_mode 3 >>> tessedit_write_images true >>> >>> >>> On Thursday, March 28, 2019 at 1:31:36 PM UTC-5, Lucas L. wrote: >>>> >>>> Environment >>>> >>>> - Tesseract 4.0.0-beta.3-249-g607e >>>> - leptonica-1.76.0 >>>> - Linux (hostname removed) 4.18.0-16-generic #17 >>>> <https://github.com/tesseract-ocr/tesseract/pull/17>-Ubuntu SMP Fri >>>> Feb 8 00:06:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux >>>> >>>> Current Behavior: >>>> >>>> I work at a SaaS firm which provides cloud storage services >>>> specializing in documents. As a part of our service, we try to create PDFs >>>> with searchable text layers from scanned documents. When processing PPMs >>>> which are created by ImageMagick from the original document, Leptonica >>>> mangles the image before it can be OCR'd properly by Tesseract. This >>>> results in a PDF unreadable by both human eyes and Tesseract. This only >>>> seems to happen for some specific documents. >>>> How do I know it's Leptonica, specifically? >>>> >>>> I have executed Tesseract with the config values tessedit_write_images >>>> 1 and tessedit_pageseg_mode 0. From my understanding, the second >>>> option does not enable OCR at all while processing with Tesseract (which >>>> speeds up my test cases) and the first option outputs a .tif debug image >>>> which is apparently what Leptonica feeds to Tesseract after processing. >>>> That image is also mangled. >>>> Sample data >>>> >>>> I have extracted a single page from a PDF -- the process works on a >>>> page-by-page basis and most of the documents we work with contain highly >>>> sensitive information, so I had no other option but to do this. >>>> Regardless, >>>> it is good sample data. The "pg_0009.ppm" file is the original input fed >>>> into Tesseract on the command line which was converted from the original >>>> scanned document by ImageMagick. The "tessinput.tif" file is the image >>>> produced by the tessedit_write_images 1 option which is supposed to be >>>> OCR'd by Tesseract. This particular page caused a seg fault in Tesseract, >>>> something that doesn't usually happen, and I suspect it is because the >>>> text >>>> is overlapped so many times that the OCR engine has too much to handle. >>>> >>>> Google Drive since it's too large for an attachment: >>>> https://drive.google.com/file/d/1UCzXYu7iusep-bOD6EcKyBs2qXCqVdu5/view?usp=sharing >>>> Expected Behavior: >>>> >>>> Leptonica leaves the image mostly intact so that Tesseract can provide >>>> a proper text layer for the output PDF. Alternatively, a configuration >>>> option is available to bypass Leptonica. >>>> >>>> Any and all help is appreciated with this issue. Thanks for reading. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "tesseract-ocr" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> To post to this group, send email to [email protected] >>> <javascript:>. >>> Visit this group at https://groups.google.com/group/tesseract-ocr. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/tesseract-ocr/4ac58e80-fd54-49f4-b479-3a33f5ca5388%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/tesseract-ocr/4ac58e80-fd54-49f4-b479-3a33f5ca5388%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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