Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-01-25
2011-01-25
Perungavoor, Sath V (Department: 2624)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S190000, C382S209000
Reexamination Certificate
active
07876832
ABSTRACT:
A method of characterizing a digital image, in which a point of interest (PI) in the detected in the image. For each θ of a plurality I of different prescribed orientations in the digital image a family {fθ(k)(n)}1≦K≦Kof K one-dimensional lines fθ(k)(n) of points is extracted from a region (RPI) of the image along K straight lines of orientation (θ), and for each line fθ(k)(n) and for each sub-sampling level s, a foveal energy signal Eθ,s(k)(n) is calculated using foveal wavelets. The signals Eθ,s(k)(n)) on the K lines and their arguments n are used to calculate a foveal signature SI characterizing the working region.
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Brooks et al., “Recognition in the Wavelet Domain: A Survey”, Journal of Electronics Imaging, SPIE + IS&T, US, vol. 10, No. 3, Jul. 2001, pp. 757-784.
Laurent Christophe
Ros Julien
Cohen Pontani Lieberman & Pavane LLP
France Telecom
Perungavoor Sath V
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