HI All ,Here i want to Reshape 2D images into 1D image vectors , why i get this error ? Error using '?? Transpose on ND array is not defined. Error in testauto (line 14) temp = reshape(img',r*c,1); .please help its urgent Thanks.

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Enayat Ansari
Enayat Ansari 2016-12-28
评论： Walter Roberson 2017-1-3
clear all close all clc
path = dir('e:\testImage\*.png'); X = [];
n = length(path);
for i = 1 : n
file = strcat('e:\testImage\',path(i).name);
img = imread(file);
% figure,imshow(img);
[r,c] = size(img);
temp = reshape(img',r*c,1);
X = [X temp];
end
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Ahmet Cecen
Ahmet Cecen 2016-12-28
Not enough information, but it is likely that the image you are reading is a color image and is actually r by c by 3. I will also speculate you probably want to do:
img = rgb2gray(img);
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Jan
Jan 2016-12-28
When this is your purpose, "[X temp]" might not be useful. When the images have different sizes, this command must fail in addition.

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Greg
Greg 2016-12-28
The error tells you exactly where the problem is: transposing an ND array on line 14. More specifically, the single tick (') operator is matrix transpose. Replace "img'" with "img". temp = reshape(img',r*c,1);
Better way to convert ANYTHING into a single column vector is "temp = img(:);"

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