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Error in sub plot when I resize Image to divide it to blocks ,can any one solve it?

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Ameligege
Ameligege 2015-3-21
关闭： MATLAB Answer Bot 2021-8-20
I use this code from math works but I change the new size of resizing function and I get this error
clc; % Clear the command window.
format compact;
workspace; % Make sure the workspace panel is showing.
fontSize = 20;
% Read in a standard MATLAB color demo image.
folder = fullfile(matlabroot, '\toolbox\images\imdemos');
baseFileName = 'peppers.png';
fullFileName = fullfile(folder, baseFileName);
% Get the full filename, with path prepended.
fullFileName = fullfile(folder, baseFileName);
if ~exist(fullFileName, 'file')
% Didn't find it there. Check the search path for it.
fullFileName = baseFileName; % No path this time.
if ~exist(fullFileName, 'file')
% Still didn't find it. Alert user.
errorMessage = sprintf('Error: %s does not exist.', fullFileName);
uiwait(warndlg(errorMessage));
return;
end
end
rgbImage = imread(fullFileName);
% For demo purposes, let's resize it to be 64 by 64;
rgbImage = imresize(rgbImage, [512 512]);
% Get the dimensions of the image. numberOfColorBands should be = 3.
[rows columns numberOfColorBands] = size(rgbImage)
ca = mat2cell(rgbImage,8*ones(1,size(rgbImage,1)/8),8*ones(1,size(rgbImage,2)/8),3);
plotIndex = 1;
for c = 1 : size(ca, 2)
for r = 1 : size(ca, 1)
fprintf('c=%d, r=%d\n', c, r);
subplot(256,256,plotIndex);
x=ca{r,c};
size(x)
imshow(x);
plotIndex = plotIndex + 1
end
end
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
The original resizing was to 64*64

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回答（1 个）

Image Analyst
Image Analyst 2015-3-21
It worked for me, other than being real slow. What was the error message you got? By the way, change
subplot(256,256,plotIndex);
to
subplot(64, 64, plotIndex);
and put a drawnow after the r loop, just before the end of the c loop.
  2 个评论
Ameligege
Ameligege 2015-3-21
The Error was in subplot ,but now I am trying this code after your solution but it does not show the output? Because I want to see the blocks of the same size 8*8

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