MATLAB: Differece image of 2 images

difference image

How to calculate difference image of 2 images read from different folders?

Best Answer

MATLAB provides imabsdiff function to find the absolute difference of two images. The following code might help you.

% read image from folder 1 
image1=imread('yourImage1.png'); 
% read image from folder 2 
image2=imread('yourImage2.png'); 
% calculate the absolute difference 
absDiffImage=imabsdiff(image1,image2); 
% plot the absolute difference image 
figure; 
imshow(absDiffImage,[]); 
colormap(jet); 
colorbar;

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MATLAB: What is a differece between a constant and Paremeter in Model simulation

Do you mean that a Parameter can serve as a Constant? I think a Constant is still needed because it's value doesn't change during simulation and can be inlined into the C code generated for the Stateflow chart, without needing to read it from the workspace (like you might need to do for a Parameter, especially in case of a tunable parameter which can change during simulation). So if you are using a constant value which doesn't change, it is might be more optimal to declare it as a constant.

MATLAB: Find the average difference of two adjacent frames on a set of images

Without further details it is difficult to know how exactly you would like to calculate it. A naive implementation that does exactly what your question asks and also gives you some possibilities is this one:

% im2double may or may not be needed depending of your goals
Frame1 = im2double(Frame1);
Frame2 = im2double(Frame2);
AverageDiff = mean(Frame1(:)-Frame2(:)); % This gives you the average difference. Use mean(abs(...)) for average absolute difference

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Related Solutions

MATLAB: What is a differece between a constant and Paremeter in Model simulation

MATLAB: Find the average difference of two adjacent frames on a set of images

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