hello, I am receiving an error . It says Undefined function or variable 'grayImage'. please let me know how i can define the function . here is my code

[pixelCount, grayLevels] = imhist(grayImage);
bar(grayLevels, pixelCount); % Plot it as a bar chart.
grid on;
title('Histogram of original image', 'FontSize', fontSize);
xlabel('Gray Level', 'FontSize', fontSize);
ylabel('Pixel Count', 'FontSize', fontSize);
xlim([0 grayLevels(end)]); % Scale x axis manually.

Answer 1

[Peng Li]

you have to have image data first which the grayImage is supposed to be. you can use imread to read an image in your disk for example.

[mahesh makam]

Can you please write me the final correct code . It would be very helpful

[Peng Li]

I = imread('pout.tif');
[count, level] = imhist(rgb2gray(I));

[mahesh makam]

thank you