CODEWITHSUNDEEP
c++opencvedge-detection
user2927700
user2927700

Reputation: 25

I need to modify a Sobel kernel for diagonal edge detection. OpenCV and C++

I need to apply these two kernels on an image.

+1 0 0 0 0 0 0 0 -1

and 0 0 +1 0 0 0 -1 0 0

And then combine the two output images. But I have no idea how to write the loops/ apply filters to an image in general.

Upvotes: 1

Views: 2372

Answers (1)

Michael Burdinov
Michael Burdinov

Reputation: 4448

You can use function called filter2d. It allows you to apply arbitrary kernel to image, so you don't need to perform any loops yourself. Just store the kernel you mentioned in Mat and provide it as input to filter2d together with your image.

Example of use:

float m[9] = {0,0,0,-1,0,1,0,0,0};
Mat kernel(Size(3,3), CV_32F, m);
filter2D(src, dst, -1, kernel);

Upvotes: 6

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