我们如何检测具有相同背景的图像边缘？

Question

I am trying to find the Contours using cvFindContours( gray, storage, &contour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0)); and Canny but i am not able to dectect it. Is there any way i can detect it.( all the processing is done in c)

Answer 1

First equalize image for better contrast. It will increase noise and other textures also but object will be quite visible.

Now, find gradient, it will evade most of gradual color and noise and some texture.

Now you can experiment with some thresholding, it will give good edge and region around shadow and object both.

To remove noise and texture, whole image can be median blurred with large kernel and then thresholded to get interesting region mask.

You can try multiple iteration of above method also. It lots of accuracy is not required, try blurring out texture.