welcom i need help

i need code or function in matlab to convert color image to gray and convert gray to binary first employ Canny edge detection with binary thresholding on the original image to keep the most signicant edges only, which reliably represent foot contours.and next step morphological dilation using a square structuring element to close the boundary.Last, we employ morphological erosion on this image.....thanks

Answer 1

[Image Analyst]

What was wrong with the answer I gave you in your duplicate question? http://www.mathworks.com/matlabcentral/answers/160818#answer_157274

Why simply just ask again?

[fatima ali]

in duplicate guestion no use thershod and dilation using a square structuring element to close the boundary.Last, we employ morphological erosion on this image.... thanks

[Image Analyst]

It found the boundary. Not sure why it matters how it was done. Sure you could use something that's not as good and then try a bunch of things to fix it up, but why, when there's a simpler and better way. I never would have looked at that image and said "Let's use edge detection."

[fatima ali]

sure ...but i work Project to extraction feature from foot ... need this step to project .. 1-thershold no number like 0.5 i need Equation thershold run on all image 2- convert image binary and detection edge using canny 3- next step morphological dilation using a square structuring element to close the boundary.Last, we employ morphological erosion on this image can you help me....thank you very much

Answer 2

[jason]

clear

clc

close all;

img_file = 'put your image here';

img_wk = imread(img_file);

figure(1), imshow(img_wk);

img_wk_gs = rgb2gray(img_wk); %converts color image to grayscale

figure(2), imshow(img_wk_gs);

img_wk_gs_edge = edge(img_wk_gs,'canny');

figure(3), imshow(img_wk_gs_edge);

img_wk_gs_edge_sobel = edge(img_wk_gs,'sobel');

figure(4), imshow(img_wk_gs_edge_sobel);

img_wk_bw = im2bw(img_wk, 0.7); %converts to black and white binary image

figure(5), imshow(img_wk_bw);

[fatima ali]

thank you very much ....but i no need thershold no 0.7 i need Equation thershold ....in this program you no run dilation using a square structuring element to close the boundary.Last, we employ morphological erosion on this image.... thanks

[jason]

You're welcome