Here is an example code for defining a circular region of pixels with radius r from the center point (x, y) in a grayscale image in MATLAB:
main.m672 chars26 lines
In this code, the meshgrid
function creates a grid of x and y coordinates corresponding to the image pixels. The sqrt
function computes the Euclidean distance between each pixel and the center point using the coordinates from the meshgrid. The resulting dist
matrix is then thresholded to create a binary mask
indicating which pixels fall within the desired circular region. Finally, the mask
can be used to extract the corresponding pixel intensities from the original grayscale image.
gistlibby LogSnag