[image tracing] In computer graphics, vectorization is the conversion of raster graphics into vector graphics, a process also known as image tracing. == Examples == File:Firma-colon.JPG|Signature of Christopher Columbus as JPEG image (1,308 × 481 pixel), 63 kB File:Columbus Signature.svg|Vectorized two colored variant of the signature of C...
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http://en.wikipedia.org/wiki/Vectorization_(image_tracing)
[mathematics] ==Compatibility with Hadamard products== ==Compatibility with inner products== Vectorization is a unitary transformation from the space of n×n matrices with the Frobenius (or Hilbert–Schmidt) inner product to Cn : where the superscript * denotes the conjugate transpose. ==Half-vectorization== For a symmetric matrix A, the v...
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http://en.wikipedia.org/wiki/Vectorization_(mathematics)
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