Shape Descriptors

Some articles on shape descriptors, shape, descriptors, shapes:

Shape Analysis (digital Geometry) - Shape Descriptors
... Shape descriptors can be classified by their invariance with respect to the transformations allowed in the associated shape definition ... Many descriptors are invariant with respect to congruency, meaning that congruent shapes (shapes that could be translated, rotated and mirrored) will have the ... Another class of shape descriptors (called intrinsic shape descriptors) is invariant with respect to isometry ...

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    The beauty of the internal nature cannot be so far concealed by its accidental vesture, but that the spirit of its form shall communicate itself to the very disguise and indicate the shape it hides from the manner in which it is worn. A majestic form and graceful motions will express themselves through the most barbarous and tasteless costume.
    Percy Bysshe Shelley (1792–1822)