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November 3, 2018 09:47
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Combine two images in the ycbcr (YUV) space.
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% This is an Octave script that aims to easily and radically improve | |
% the sharpness of images from https://github.com/jantic/DeOldify | |
% for now, it is hand-tuned for one of the sample images | |
% Script output: https://imgur.com/a/n2sBYCi | |
pkg load image % pkg install -forge image to install | |
yoff = 7; % Y offset between the two images, hand-tuned to 6 or 7 | |
im = imread('Ballerinas.jpg'); | |
original = im(yoff+1:end,2:502,:); % should be 2:506 | |
restored = im(1:end-yoff,611:end,:); | |
figure(1);imshow(original); | |
figure(2);imshow(restored); | |
% Take the yuv transform of both images, | |
% then combine the Y of the grayscale with the UV | |
% of the colorized one | |
o_yuv = rgb2ycbcr(original); | |
r_yuv = rgb2ycbcr(restored); | |
c_yuv = o_yuv; | |
c_yuv(:, :, 2:3) = r_yuv(:, :, 2:3); | |
combined = ycbcr2rgb(c_yuv); | |
figure(3);imshow(combined); | |
imwrite(original, 'original.png') | |
imwrite(restored, 'restored.png') | |
imwrite(combined, 'combined.png') |
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