how to calculate no. of edge pixel of a image for a particular(e.g sobel edge detector) edge detector using matlab

how to calculate no. of edge pixel of a image for a particular(e.g sobel edge detector) edge detector using matlab

[Ram]

what are edge pixels ?? how to find edge pixels using sobel operator

Answer 1

[Image Analyst]

Assuming you used edge(), which thresholds the edge image, you could just use sum():

numberOfEdgePixels = sum(edgeImage(:));

Answer 2

[Anand]

bw = edge(I,'sobel');
edgePixels = nnz(bw)

Answer 3

[bindu bansal]

Anybody pl help me to implement paper "a classification algorithm to distinguish Image as Haze or non-Haze".... thanks in advance

[Image Analyst]

The Mathworks would like to do that with you. Call them and say that you want to talk with the "Consulting" department.