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Monthly Archives: March 2015

after fixing dpi what else can you do?

fix DPI (if needed) 300 DPI is minimum fix text size (e.g. 12 pt should be ok) try to fix text lines (deskew and dewarp text) try to fix illumination of image (e.g. no dark part of image binarize and de-noise image User Scenario: Process digital camera pictures and OCR to extract specific […]

DPI and you?

I have been experimenting with tasseract and occasionally get really terrible results when I know I should not. When I grab the images, change the dpi aka save them at a different resolution I get great results. Tasseract wants 300 dpi. when I google dpi of digital images or how to change dpi on android […]