MATLAB: How to find coordinates of specific pixel l value

image processingImage Processing Toolboximage segmentation

hello all,

i want to find the x,y coordinates of specific pixel value. how i can find that.kindly guide me thanks.

see attach image. this represts the pixel values of binary image, now i want to find x,y coordinates of these pixel values only.

[row,col]=find(BW3==1);

depending on your image orientation, either row is x, or col is x.

I don't know why that would be necessary, but if you insist:

[rows, columns] = find(BW); % 2 1-D vectors.
xy = [columns, rows]; % Stitch together to form N by 2 (x,y) array.

BW = roipoly(...);
[x,y] = find(BW);