c# - Crosswords schema recognize using photo grabbed by camera -

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i create software provided crossword puzzles image, give me following information: - number of rows , columns - position of black boxes

i made ​​this guy sudoku: http://sudokugrab.blogspot.it/2009/07/how-does-it-all-work.html

i use similar system obtain schema of crossword puzzle photo grabbed camera phone.

is possible such application? start search. algorithm need use?

this crossword puzzle use: http://i.stack.imgur.com/xl815.gif

update:

the image source have use this: enter image description here

update: hi guys, after many tries able find black fields applying filters:

  • grayscale
  • adaptive thresholding (bradley local threshold)
  • invert
  • blob counter

this result image: enter image description here

now, how find white fields? suggestion? help!!


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