Code

cropper sanity#84

Code

Merged

kba merged 33 commits intoOCR-D:masterOCR-D/ocrd_anybaseocr:masterfrom bertsky:not-binarizedbertsky/ocrd_anybaseocr:not-binarizedCopy head branch name to clipboardApr 23, 2021

+738-354

Commits

Commits on Apr 15, 2021

• cropping: algorithm needs raw (not binarized) images

  bertsky

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  bcef2af

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• cropping: PIL/ocrolib uses RGB (not BGR) channels

  bertsky

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  94785c7

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• cropping: paste improved pil2array, remove legacy ocrolib dependency

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  01b44d5

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• cropping: for detection based on textbox estimation, use all contours recursively (not just outer) and use exact contour area (without drawing to intermediate image)

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Commits on Apr 16, 2021

• cropping: use existing parameters for same things everywhere

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• cropping: rename and describe parameters in a sane way

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• cropping: rewrite edge detection based algorithm…

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• cropping: ignore margin-only text areas

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• 📦 1.4.0

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• cropping: ruler detection does not binarization (but mask instead of clip it)

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  a3834fb

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• cropping: lower fg density text boxes, merge nearby columns before removing small ones

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  69e608b

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• cropping: more logging

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  288833b

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• cropping: prefer line-based detector if successful on all 4 sides

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  eddf260

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• cropping: edge detection: fix gap criterion

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  0195d40

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• cropping: edge detection: increase length priority over position

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  fdf27d8

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• cropping: edge detection: make consistency criterion more robust

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• cropping: ignore margin-only columns before merging

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• cropping: use intersections from edge detection as polygon instead of bbox, and pad it inwardly

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  370005b

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• cropping: make everything DPI-relative (assuming 300 DPI as natural scale)

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Commits on Apr 19, 2021

• cropping: fix 370005b (polygon ordering)

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• cropping: edge detection: make position priority peak at 10% of margin

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  0e00b3e

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• cropping: edge detection: include wider range of line segments

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  6c63caa

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Commits on Apr 20, 2021

• cropping: fix 0e00b3e (absolute vs relative position)

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  fb1eb0f

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• cropping: allow plotting debug images to files

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  905d45d

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• cropping: add docstring

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  aebc517

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• cropping: crop in last derived image (including binarized) and use transparency and bg-filling

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Commits on Apr 22, 2021

• cropping: use more adequate LSD parameters to make line reconstruction via line segment clustering easier

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  a7aa3f2

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• cropping: reduce default left/right margin zones

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  6facf80

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• cropping: improve bombast/outdated comment header

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  fe40375

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• cropping: fix for grayscale input

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  f961559

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• cropping: apply detected ruler to edge detector result, too

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  2b6f7ce

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• cropping: allow steeper angles for badly skewed/keystoned images

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Commits on Apr 23, 2021

• cropping: edge detection: make position priority peak at 30% of margin and decrease slower inwards

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