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Significant steps for pre-processing

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missC
missC 2014-7-17
关闭： MATLAB Answer Bot 2021-8-20
Hi everyone,is there any way to determine which step important to be considered in order to perform image pre-processing regardless an iterative experiment.
For example, I have this input data, and need to tidy up the imperfection of the drawing. I know that morphological operations is a must (dilation) as I need to get the skeleton of the image. Perhaps, I missed some step in here because somehow the thinned image is not satisfied the next phase requirement (Corner detection).
Thanks
Input Image
Dilated image
Thinned / Skeleton image
Corner detected (Not at the exact edges)

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