US 11,368,659 B2 · System and method of reducing distortion during downsampling

Abstract

A video processing system is provided for reducing distortion in video signals. The system includes a first transfer function that applies a transfer function to a received video signal to generate a gamma corrected video signal in a first color space; and a first matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected signal in a second color space, and extracts a luminance component from the gamma corrected signal in the second color space. Moreover, the system includes a second transfer function that generates a gamma corrected downsampled video signal in the first color space, and a second matrix component that transforms the gamma corrected video signal in the first color space to a gamma corrected video signal in the second color space, and extracts the chroma component in the second color space.

Claims20

Dependent claims

A video processing system for reducing distortion in video signals, the video processing system comprising:

a low-pass filter configured to down sample a video signal in a first color space to generate a down-sampled video signal in the first color space;
a first transfer function configured to generate a gamma corrected video signal in the first color space from the video signal;
a second transfer function configured to generate a gamma corrected down-sampled video signal in the first color space from the generated down-sampled video signal;
at least one matrix component configured to generate a gamma corrected video signal in a second color space from the gamma corrected video signal in the first color space, and to generate a gamma corrected down-sampled video signal in the second color space from the gamma corrected down-sampled video signal;
and
an output configured to transmit at least one of the gamma corrected video signal in the second color space and the gamma corrected down-sampled video signal in the second color space to a display device to be displayed thereon.

3 more elements

A video processing system for reducing distortion in video signals, the video processing system comprising:

a filter configured to down sample a video signal in a first color space to generate a down-sampled video signal in the first color space;
a first transfer function configured to transform the video signal to a gamma corrected video signal in the first color space;
a second transfer function configured to transform the generated down-sampled video signal to a gamma corrected down-sampled video signal in the first color space;
and
at least one matrix component configured to generate a gamma corrected video signal in a second color space from the gamma corrected video signal in the first color space, and to generate a gamma corrected down-sampled video signal in the second color space from the gamma corrected down-sampled video signal.

2 more elements

Dependencies are inferred from the claim text.

System and method of reducing distortion during downsampling

Life of this patent

System and method of reducing distortion during downsampling

Life of this patent

Abstract

Claims20