Selective feature background subtraction method aiming at thick crowd monitoring scene
A background subtraction, selective technology, applied in character and pattern recognition, instrument, calculation, etc., can solve difficult problems and achieve the effect of low false detection rate
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[0033] figure 1 A framework for the invention is given. The implementation of the present invention is described in detail below.
[0034] 1. Batch principal component analysis and incremental principal component analysis
[0035] In the present invention, the initial feature background is obtained by batch principal component analysis in the training phase, and the feature background is updated in real time by incremental principal component analysis in the subtraction phase. Therefore, batch principal component analysis and incremental principal component analysis are the basis of the present invention.
[0036] Batch principal component analysis can be described by the following formula:
[0037] C x u i =λu i (1)
[0038] C x = 1 N Σ i = 1 N [ x ...
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