SYSTEMS AND METHODS FOR COLOR COMPENSATION IN MULTI-VIEW VIDEO
First Claim
1. A method for color compensation in multi-view video comprising:
- sensing a first video sequence in a master channel;
sensing a second video sequence in a slave channel;
wherein the first and second video sequences are acquired from a common scene of interest;
generating a set of global color ratio statistics from the master channel and the first slave channel;
calculating at least one compensation gain based upon the set of global color ratio statistics;
applying the at least one compensation gain to the slave channel to obtain a gain-compensated first slave channel;
combining an initial color correction matrix with a first color matching matrix to obtain a final master color correction matrix;
combining an initial color correction matrix with a second color matching matrix to obtain a final slave color correction matrix; and
color-compensating the master channel and the gain-compensated slave channel by applying the final master and final slave color correction matrices to the master channel and the gain-compensated slave channel, respectively.
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Abstract
An apparatus and a method for color compensation in multi-view video is provided. Video sequences corresponding to a common scene of interest are captured and processed using the master and slave channels respectively. A compensation gain is calculated based on a set of global color ratio statistics obtained from the master and slave channels. The compensation gain is applied to the slave channel. An initial master color correction matrix is combined with a master color matching matrix to obtain a final master color correction matrix. The initial slave color correction matrix is combined with a slave color matching matrix to obtain a final slave color correction matrix. The master and gain-compensated slave channels are color-compensated by applying the final master and final slave color correction matrices to the master and gain-compensated slave channels, respectively.
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Citations
17 Claims
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1. A method for color compensation in multi-view video comprising:
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sensing a first video sequence in a master channel; sensing a second video sequence in a slave channel; wherein the first and second video sequences are acquired from a common scene of interest; generating a set of global color ratio statistics from the master channel and the first slave channel; calculating at least one compensation gain based upon the set of global color ratio statistics; applying the at least one compensation gain to the slave channel to obtain a gain-compensated first slave channel; combining an initial color correction matrix with a first color matching matrix to obtain a final master color correction matrix;
combining an initial color correction matrix with a second color matching matrix to obtain a final slave color correction matrix; andcolor-compensating the master channel and the gain-compensated slave channel by applying the final master and final slave color correction matrices to the master channel and the gain-compensated slave channel, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for color compensation of a first video sequence in a master channel and a second video sequence in a slave channel, wherein the first and second video sequences are acquired from a common scene of interest, the method comprising:
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generating a set of global color ratio statistics from the master channel and the slave channel; generating a compensation gain based upon the set of global color ratio statistics; applying the compensation gain to the slave channel to obtain a gain-compensated slave channel; combining an initial color correction matrix with a first color matching matrix to obtain a final master color correction matrix; combining an initial color correction matrix with a second color matching matrix to obtain a final slave color correction matrix; and color-compensating the master channel and the gain-compensated slave channel by applying the final slave and final master color correction matrices to the master channel and the gain-compensated slave channel, respectively. - View Dependent Claims (11, 12, 13, 14)
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15. A video image processor comprising:
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a master channel; a slave channel; a global ratio statistics calculator for determining a set of global color ratio statistics from the master channel and the slave channel; a gain calculator for calculating a compensation gain based upon the set of global color ratio statistics; a gain compensator for applying the compensation gain to the slave channel; a first color correction matrix generator for generating a master channel color correction matrix; a second color correction matrix generator for generating a slave channel color correction matrix; and a video image color compensator for applying the master channel and the slave channel color correction matrices to the master channel and slave channel respectively to generate a color compensated video image. - View Dependent Claims (16, 17)
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Specification