Skew detection and correction

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ganesh
ganesh 2013-12-5
评论： oza san 2017-3-28
I hane a binary image that contains a headerline. I want to skew image so that header line will be in horozontal direction.
  2 个评论
Image Analyst
Image Analyst 2013-12-6
Please attach your image so we can recommend an approach.
oza san
oza san 2017-3-28
i have an image like below and i want to detect and correct the skew can you help me sir?

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回答（2 个）

Image Analyst
Image Analyst 2013-12-5
So find the line, then call imtransform to remove the shear (skew).
  1 个评论
Alex Taylor
Alex Taylor 2013-12-6
编辑：Alex Taylor 2013-12-6
Image Analyst's answer is on the money. However, I would use imwarp and affine2d instead of imtransform/maketform. The use of imtransform is no longer recommended.

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Alex Taylor
Alex Taylor 2013-12-6
编辑：John Kelly 2015-2-27
I do actually have one clarification from the tags. Do you really mean skew/shear, or do you actually mean rotation?
If you only need to rotate the header line out of view, it will be easier to just use the imrotate function (assuming you have the Image Processing Toolbox).

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