auto crop image (need idea or code)

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symmm
symmm on 24 Apr 2017
Commented: symmm on 26 Apr 2017
Hey. I want to auto crop/trim the attached image. An image for every kanji character should be the solution. thanks for the help.
  2 Comments
Rik
Rik on 24 Apr 2017
Unless every pixel is identical for each character, this will be very difficult. If you are in luck, you can simply look for completely white rows to separate the characters.
Image Analyst
Image Analyst on 24 Apr 2017
It looks like there is kerning involved, so looking for white columns won't solve the problem.

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Accepted Answer

Image Analyst
Image Analyst on 24 Apr 2017
23.4.4 Chinese and Kanji Characters
23.4.4.1 Chinese Characters, Review, Survey, Evaluations
23.4.4.2 Chinese Characters, Using Stroke and Radical Analysis, Features
23.4.4.3 Chinese Characters, Japanese Characters, Handwritten
23.4.4.4 Online Recognition of Chinese Characters
23.4.4.5 Chinese Character Seals
  6 Comments
Image Analyst
Image Analyst on 25 Apr 2017
Edited: Image Analyst on 26 Apr 2017
symmm, just try the attached code and you'll see it gets every character in every row.

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More Answers (1)

symmm
symmm on 25 Apr 2017
Thanks for the help, but i need to solve this without using ocr(school project). I think i didn't explain the problem enough. I need to trim the strip (see red line for example).
So is there a possibility to count the white pixels between the kanji characters. Or maybe search for a box with white pixels (see black box in picture) and find out the center of the box for the x, y coordinate.
  1 Comment
Rik
Rik on 25 Apr 2017
For that orange line, you can use my idea of looking for white rows. To separate them further is much more complicated.

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