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Technological form defects identification using discrete cosine transform method

โœ Scribed by Jonathan Lecompte; Olivier Legoff; Jean-Yves Hascoet


Publisher
Springer
Year
2010
Tongue
English
Weight
857 KB
Volume
51
Category
Article
ISSN
0268-3768

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## Abstract This article introduces a new algorithm for shape from focus (SFF) based on discrete cosine transform (DCT) and principal component analysis (PCA). DCT is applied on a small 3D neighborhood for each pixel in the image volume. Instead of summing all focus values in a window, AC parts of