Embedded picture PSNR/CRC data in compressed video bitstream
First Claim
Patent Images
1. A method for processing an input signal, comprising the steps of:
- (A) extracting a compressed signal and a first checksum from said input signal;
(B) generating a decompressed signal by decompressing said compressed signal;
(C) calculating a second checksum for said decompressed signal; and
(D) generating a result by comparing said first checksum to said second checksum, wherein said second checksum comprises a plurality of checksums, one each for at least a luminance channel, a first chrominance channel and a second chrominance channel of said decompressed signal.
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Abstract
A method for processing an input signal is disclosed. The method generally includes the steps of (A) extracting a compressed signal and a first checksum from the input signal, (B) generating a decompressed signal by decompressing the compressed signal, (C) calculating a second checksum for the decompressed signal and (D) generating a result by comparing the first checksum to the second checksum.
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Citations
25 Claims
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1. A method for processing an input signal, comprising the steps of:
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(A) extracting a compressed signal and a first checksum from said input signal; (B) generating a decompressed signal by decompressing said compressed signal; (C) calculating a second checksum for said decompressed signal; and (D) generating a result by comparing said first checksum to said second checksum, wherein said second checksum comprises a plurality of checksums, one each for at least a luminance channel, a first chrominance channel and a second chrominance channel of said decompressed signal. - View Dependent Claims (2, 3, 4, 5)
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6. A method for processing an input signal, comprising the steps of:
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(A) extracting a compressed signal and a first checksum from said input signal; (B) generating a decompressed signal by decompressing said compressed signal; (C) calculating a second checksum for said decompressed signal; (D) generating a result by comparing said first checksum to said second checksum; (E) extracting a quality value from said input signal, (i) said quality value indicating a correlation between an original signal and a reconstructed signal and (ii) said reconstructed signal being generated by decompressing said compressed signal; and (F) transferring said decompressed signal, said quality value and said result to a user. - View Dependent Claims (7, 8)
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9. A method for processing an input signal, comprising the steps of:
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(A) extracting a compressed signal and a first checksum from said input signal; (B) generating a decompressed signal by decompressing said compressed signal; (C) calculating a second checksum for said decompressed signal by summing each absolute difference of two consecutive data samples over a predetermined number of said consecutive data samples within said decompressed signal; and (D) generating a result by comparing said first checksum to said second checksum.
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10. A method for processing an input signal, comprising the steps of:
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(A) extracting a compressed signal and a quality value from said input signal, (i) said quality value indicating a correlation between an original signal and a reconstructed signal and (ii) said reconstructed signal being generated by decompressing said compressed signal; (B) generating a decompressed signal by decompressing said compressed signal; and (C) transferring said decompressed signal and said quality value to a user. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for processing an original signal, comprising the steps of:
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(A) generating a compressed signal, by compressing said original signal; (B) generating a reconstructed signal by decompressing said compressed signal; (C) calculating at least one of (i) a first checksum for said reconstructed signal and (ii) a quality value indicating a correlation between said original signal and said reconstructed signal; (D) generating an output signal comprising said compressed signal and said at least one of said first checksum and said quality value; and (E) transferring said quality value to a user. - View Dependent Claims (19, 20, 21, 22, 23)
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18. A method for processing an original signal, comprising the steps of:
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(A) generating a compressed signal by compressing said original signal; (B) generating a reconstructed signal by decompressing said compressed signal; (C) calculating at least one of (i) a first checksum for said reconstructed signal and (ii) a quality value indicating a correlation between said original signal and said reconstructed signal; and (D) generating an output signal comprising said compressed signal and said at least one of said first checksum and said quality value, wherein said first checksum comprises a plurality of checksums, one each for at least a luminance channel, a first chrominance channel and a second chrominance channel of said original signal.
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24. A method for processing an original signal, comprising the steps of:
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(A) generating a compressed signal by compressing said original signal; (B) generating a reconstructed signal by decompressing said compressed signal; (C) calculating at least one of (i) a first checksum for said reconstructed signal and (ii) a quality value indicating a correlation between said original signal and said reconstructed signal, wherein said first checksum is calculated by summing each absolute difference of two consecutive data samples over a predetermined number of said consecutive data samples within said reconstructed signal; and (D) generating an output signal comprising said compressed signal and said at least one of said first checksum and said quality value. - View Dependent Claims (25)
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Specification