Image analysis – Histogram processing – For setting a threshold
Patent
1992-03-26
1994-03-15
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
358433, 382 43, G06K 936
Patent
active
052952037
ABSTRACT:
A vector coding scheme for video transform coefficients is provided. A vector is generated to identify a group of coefficients from a block of transform coefficients that qualify for transmission according to predetermined criteria. In an illustrated embodiment, only coefficients having nonzero amplitudes are transmitted. The vector is encoded to provide a vector code word for transmission. The coefficients from the group qualifying for transmission are encoded to provide coefficient code words for transmission. The vector code word correlates the coefficient code words to coefficient locations in the block. In a preferred embodiment, the block is divided into a plurality of regions containing subsets of coefficients. A separate vector is transmitted for each region, correlating the coefficient code words to coefficient locations in the corresponding region of the block.
REFERENCES:
patent: 4910608 (1990-03-01), Whiteman et al.
patent: 5020121 (1991-05-01), Rosenberg
patent: 5113256 (1992-05-01), Citta et al.
patent: 5115479 (1992-05-01), Murayama
patent: 5148271 (1992-09-01), Kato et al.
Krause Edward A.
Liu Vincent
Tom Adam
General Instrument Corporation
Lipsitz Barry R.
Mancuso Joseph
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