How to remove white border from image?
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% This draws a small transparent white square in upper left hand side of the group image.
% How do I remove white border of the gcf, and preserve original dimensions of E at 72ppi in saved file?
% BORDER TIGHT seems to have no effect.
clear all
E = imread('visionteam.jpg');
hold on
h1 = imshow(E,'Border','tight')
I = 255 - uint8(zeros(100, 100, 3));
h2 = imshow(I,'Border','tight')
set(h2, 'AlphaData', .35)
hold off
print(gcf,'im','-dtiff','-r72');
采纳的回答
Image Analyst
2020-7-25
Try this:
rgbImage = imread('visionteam.jpg');
hold on
imshow(rgbImage,'Border','tight')
whiteSquare = 255 * ones(100, 100, 'uint8');
rgbImage(1:100, 1:100, 1) = whiteSquare; % Load into red channel.
rgbImage(1:100, 1:100, 2) = whiteSquare; % Load into red channel.
rgbImage(1:100, 1:100, 3) = whiteSquare; % Load into red channel.
imshow(rgbImage)
% imwrite(rgbImage, filename); % Save to disk if you want.
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