Patent ID: 6810082
Filing Date: 2004-10-26
Classification: H04N

Abstract:
A method for peaking a video signal, comprising:receiving a source video signal including luminance and chrominance portions and including a chroma-difference signal segment which has been delivered as a compressed stream of data which includes the DCT coefficients for the decompressed video signal; obtaining the spectral histogram of chrominance energy or the chrominance DCT coefficients for a selected portion of the video signal from the source video signal and comparing the spectral histogram or the amplitude of the DCT coefficients to a predetermined spectral profile or level; and peaking the luminance and/or chrominance portion of the selected portion of the video signal based on the comparison of the spectral histogram to the profile or when the amplitude of the DCT coefficients of the selected portion of the video signal meet or exceed the predetermined threshold level.