MATLAB: How to delete the white pixel(255) from grey scale image

image processingMATLAB

I have to delete only 225 value white pixel from gray scale image. But i don't know how to identified each pixel from image and check if it is 255 and assign it's value to zero. Please help me

Best Answer

im(im==255)=0

Related Solutions

MATLAB: How to create a white image

Try this to create a grayscale image:

whiteImage = 255 * ones(N, M, 'uint8');
imshow(whiteImage);

To create an RGB image, try this:

whiteImage = 255 * ones(480, 640, 3, 'uint8');
imshow(whiteImage);

MATLAB: Assigning color to gray image

I'd just use colormap and not mess with contours unless you know what you're doing and what you want. To pseudocolor a grayscale image an leave it as grayscale but display it as colored:

imshow(grayImage);
colormap(jet(256));
colorbar;

To convert a grayscale image into a true color RGB image and display the RGB image instead of the pseudocolored image:

rgbImage = ind2rgb(grayImage, jet(256));
imshow(rgbImage);

You don't use color bars with RGB images.

Best Answer

Related Solutions

MATLAB: How to create a white image

MATLAB: Assigning color to gray image

Related Question