Change the black background to blue (same as the image color)
7 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
0 commentaires
Réponses (1)
Image Analyst
le 2 Mai 2020
Try this (untested)
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
% Get a mask for pure black.
blackMask = redChannel == 0 & greenChannel == 0 & blueChannel == 0;
% Make black blue
redChannel(blackMask) = 0;
greenChannel(blackMask) = 0;
blueChannel(blackMask) = 255;
% Recombine separate color channels into a single, true color RGB image.
rgbImage = cat(3, redChannel, greenChannel, blueChannel);
imshow(rgbImage);
1 commentaire
Image Analyst
le 3 Mai 2020
I'd probably take a histogram of each color channel. Ignore bin 1 because that will be zero. YOu need to find the gray level of the second most common gray level. That will be the purple. Then assign that to the black mask regions.
Voir également
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!