Calculate optical flow between two pictures
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Hi,
I tried to calculate the optical flow between two pictures with the matlab built-in function:
I1 = rgb2gray(imread('Test4.jpg'));
I2 = rgb2gray(imread('Test4e.jpg'));
opticalFlow = vision.OpticalFlow('ReferenceFrameSource', 'Input port')
step(opticalFlow, I1, I2)
But I get the error:
Error using vision.OpticalFlow/validateInputsImpl (line 846)
Expected input I data type to be floating-point.
I am not sure what this means. I can't see the code of this. Any ideas on what I am doing wrong?
Thanks
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Accepted Answer
Guillaume
on 14 Dec 2014
Your I1 and I2 are of type uint8. Convert them to double:
I1 = im2double(rgb2gray(imread('Test4.jpg')));
I2 = im2double(rgb2gray(imread('Test4e.jpg')));
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