How to change width and height of image?
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Hey, I'm trying to reduce the size of the height and width of an image only if the image width or height is over 400 pixels. Anybody know how I can do that? Here's the code:
im = imread('harry.jpg');
info = imfinfo('harry.jpg');
hoyde = info.Height;
bredde = info.Width;
if hoyde > 400 bredde > 400
nyhoyde = hoyde/2;
nybredde = bredde/2;
[nyhoyde,nybredde,kanaler] = size(im);
end
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Image Analyst
le 20 Nov 2012
Not sure I understand the language you used, but I'd do it like this:
reductionFactor = 0.5; % whatever...
[rows columns numberOfColorChannels] = size(im);
if rows>400 || columns > 400
im = imresize(im, reductionFactor);
end
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Thomas
le 20 Nov 2012
Modifié(e) : Thomas
le 20 Nov 2012
im = imread('harry.jpg');
info = imfinfo('harry.jpg');
hoyde = info.Height;
bredde = info.Width;
if hoyde > 400 || bredde > 400 %if rows or columns have more than 400px
iq=imresize(im,0.5); % reduce by factor 1/2=0.5
end
figure
imshow(im) % actual image
figure
imshow(iq) % reduced image
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