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problem in understanding ''Feature Based Panoramic Image Stitching ''

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I'm on studying the ''Feature Based Panoramic Image Stitching '' and I have 5 questions
1.how should I fill these 2 lines if my images are in the folder on my pc
buildingDir = fullfile(toolboxdir('vision'), 'visiondata', 'building');
buildingScene = imageDatastore(buildingDir);
2.why we use eye(3) for projective2d ?
3.in match features, what is the role of 'unique'?
4.in tforms(n).T , what do we mean by <.T> ?
5. what is the role of step and imref2d in this code?
tnx

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Accepted Answer

Walter Roberson
Walter Roberson on 23 Dec 2016
1) You do not need to change those lines provided you have a version of the Computer Vision Toolbox installed that is new enough to have the files.

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Walter Roberson
Walter Roberson on 23 Dec 2016
Then replace
buildingDir = fullfile(toolboxdir('vision'), 'visiondata', 'building');
with assigning to buildingDir the string which is the name of the directory where your files are. For example,
buildingDir = 'C:\Users\Kooshafar\Documents and Settings\MATLAB\Project17\buildings';
Jagrati Talreja
Jagrati Talreja on 25 Mar 2019
if I have to take the difference of the two images after alignment

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