how to eliminate white pixels(smoke pixels) in the rgb image

how to eliminate white pixels(smoke pixels) in the rgb image

[KSSV]

eliminate in the sense? You want to replace that with something else?

Answer 1

[Gautam]

Hello @senthil vadivu

You can eliminate white pixels from an RGB image by identifying these pixels and then replacing them with a suitable value, such as the background color or making them transparent. This can be done in two steps

1. Identify White Pixels: Define a threshold to identify white pixels based on their RGB values.
2. Replace White Pixels: Replace these identified pixels with another color or make them transparent.

img = imread(image);
whiteThreshold = 240;

% Create a mask for white pixels
whiteMask = img(:,:,1) > whiteThreshold & img(:,:,2) > whiteThreshold & img(:,:,3) > whiteThreshold;

%Replace white pixels with black (or any other color)
replacementColor = [0, 0, 0];
img(repmat(whiteMask, [1, 1, 3])) = repmat(reshape(replacementColor, [1, 1, 3]), sum(whiteMask(:)), 1);