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2015-02-27 23:04:03 -0500 commented question (OpenCV/C++) Image Rectitication/Transformation

Theodore, in this example you gave me, you must find the 4 corners of the chess board, but with the findchessboardcorners are not returned the 4 corners, but is returned something like this: https://uploaddeimagens.com.br/imagen...

2015-02-27 21:38:29 -0500 commented question (OpenCV/C++) Image Rectitication/Transformation

Thank you Theodore. I will use a standard chess board, because I will shoot a subject for analysis, on this board, and then perform the transformation on the image, right after this, perform the analysis with the object in a better position.

2015-02-27 19:09:32 -0500 received badge  Student (source)
2015-02-27 19:05:29 -0500 commented question (OpenCV/C++) Image Rectitication/Transformation

Thanks, but i think that this solution not fits on my problem, cause i'm working with a image and this solution is with a camera calibration, with video. Or I can be mistaken. However thanks again!

2015-02-27 19:01:23 -0500 received badge  Supporter (source)
2015-02-27 15:26:05 -0500 asked a question (OpenCV/C++) Image Rectitication/Transformation

Hi, am new to computer vision, began Monday, and need to perform a perspective transformation in images with these characteristics:

image description

... To look like this:

image description

Researched in various forums, but still did not get results, I heard that the characteristics of a chessboard help in rectifying / transformation of the image. Would appreciate it very much if someone help me at least with step by step. Thank U!