preproc/testdata, branch v0.1.4 Miscellaneous OCR related utilities and packages Improve wiper algorithm 2020-07-13T17:17:48+00:00 Nick White git@njw.name 2020-07-13T17:09:15+00:00 0ceaa5d97b585987539c51b8b8ce0705c06fc3a8 Several changes made to wiper to improve things: - If findbestedge finds more than one 'best' line, choose the middle one, rather than the first. - findbestedge selects the line with the lowest number of black pixels, rather than (erroneously) the highest. - Added a findedgesOutin() function, which finds edges like findedges() but looking from the outside edges of the image inwards, rather than from the inside out. More testing is needed to decide whether this is useful; initial testing showed very little difference, but that was limited to lightly binarised images. This is in use by VWipe() at present, where worries about several gutters thanks to the edges of other pages aren't present. - Added separate vwsize, vthresh and vmin arguments to WipeFile so that vertical wiping can have different parameters (which is very important for good quality vertical wiping). - Updated wiping tests. - Rewrote the wipe cmd to use WipeFile() directly. 
Several changes made to wiper to improve things:
- If findbestedge finds more than one 'best' line, choose
  the middle one, rather than the first.
- findbestedge selects the line with the lowest number of
  black pixels, rather than (erroneously) the highest.
- Added a findedgesOutin() function, which finds edges like
  findedges() but looking from the outside edges of the image
  inwards, rather than from the inside out. More testing is
  needed to decide whether this is useful; initial testing
  showed very little difference, but that was limited to lightly
  binarised images. This is in use by VWipe() at present, where
  worries about several gutters thanks to the edges of other
  pages aren't present.
- Added separate vwsize, vthresh and vmin arguments to WipeFile
  so that vertical wiping can have different parameters (which
  is very important for good quality vertical wiping).
- Updated wiping tests.
- Rewrote the wipe cmd to use WipeFile() directly.
Add another top/bottom wipe test 2020-03-05T14:44:17+00:00 Nick White git@njw.name 2020-03-05T14:44:17+00:00 822ce40a7d708ed44d6e638e2e25db9261254d13 






Add vertical test to wipesides
2020-03-04T17:32:47+00:00

Nick White
git@njw.name

2020-03-04T17:32:47+00:00

e8c47ee22391bc395bc4c8001c8edde9b6eff708












Add edge detection tests for wipesides
2020-03-03T18:16:25+00:00

Nick White
git@njw.name

2020-03-03T18:16:25+00:00

83f6144cfe0e91df991e107e66b73d9e037ea969

These should be nice and robust to small changes that are still valid, as they don't depend on the output not changing, only on the detected sides being within appropriate limits.





These should be nice and robust to small changes that are still valid, as they don't depend on the output not changing, only on the detected sides being within appropriate limits.







Update wipesides test
2020-02-20T12:33:37+00:00

Nick White
git@njw.name

2020-02-20T12:33:37+00:00

f4b09a79aee43a52b0c2fc04d32eb1032dfe5804












Continue separating the repository; remove all but preproc, and move integralimg package under it
2019-10-08T14:37:07+00:00

Nick White
git@njw.name

2019-10-08T14:37:07+00:00

787d63fc5d13c6250bd33da5a8e1eadbe86188cd