US 2019/0246138 A1 · METHOD OF PRE-PROCESSING OF VIDEO INFORMATION FOR OPTIMIZED VIDEO ENCODING

Abstract

There are provided computerized systems and methods of pre-processing video information for optimized video encoding. In various aspects, the pre-processing can be performed in different ways. By way of example, this can be performed by aligning a plurality of consecutive frames in the sequence of video frames. By way of another example, this can be performed by conducting adaptive pre-filtering of the video information. By way of yet another example, this can be performed by filtering the video information in order to remove grain content thereof.

Claims51

Dependent claims

A computerized method of pre-processing video information for optimized video encoding, the method comprising:

receiving, by an I/O interface, video information to be encoded, the video information comprising a sequence of video frames;
aligning, by a control circuitry, a plurality of consecutive frames in the sequence of video frames by spatially shifting at least one frame of the plurality of consecutive frames, giving rise to a pre-processed sequence of video frames including the aligned plurality of consecutive frames;
and
encoding, by the control circuitry, the pre-processed sequence of video frames using block-based motion estimation, wherein the block-based motion estimation is optimized by using the pre-processed video information.

1 more element

A computerized method of pre-processing video information for optimized video encoding, the method comprising:

receiving, by an I/O interface, video information to be encoded, the video information comprising a sequence of video frames;
conducting, by a control circuitry, adaptive pre-filtering of the video information, giving rise to pre-processed video information, wherein the conducting comprises, for each given frame of the sequence of video frames:
estimating encoding complexity for one or more blocks in the given frame, the encoding complexity indicative of difference between pixels in the one or more blocks and corresponding prediction of the pixels;
determining a filter strength parameter for the given frame at least based on the encoding complexity;
and
filtering the given frame using the filter strength parameter, giving rise to a filtered frame;
thereby obtaining a sequence of filtered frames constituting the pre-processed video information;
and
encoding, by the control circuitry, the pre-processed video information.

6 more elements

A computerized system of pre-processing video information for optimized video encoding, the system comprising:

an I/O interface configured to receive video information to be encoded, the video information comprising a sequence of video frames;
a control circuitry operatively connected to the I/O interface, the control circuitry comprising a processor and a memory coupled thereto and configured to:
conduct adaptive pre-filtering of the video information, giving rise to pre-processed video information, wherein the conducting comprises, for each given frame of the sequence of video frames:
estimating encoding complexity for one or more blocks in the given frame, the encoding complexity indicative of difference between pixels in the one or more blocks and corresponding prediction of the pixels;
determining a filter strength parameter for the given frame at least based on the encoding complexity;
and
filtering the given frame using the filter strength parameter, giving rise to a filtered frame;
thereby obtaining a sequence of filtered frames constituting the pre-processed video information;
and
encode the pre-processed video information.

7 more elements

A computerized system of pre-processing video information for optimized video encoding, the system comprising:

an I/O interface configured to receive video information to be encoded, the video information comprising a sequence of video frames;
a control circuitry operatively connected to the I/O interface, the control circuitry comprising a processor and a memory coupled thereto and configured to:
filter the video information in order to remove grain content thereof, giving rise to pre-processed video information, wherein the filtering comprises, for each given frame of the sequence of video frames:
obtaining temporal prediction information for the given frame;
detecting areas in the given frame with bad temporal prediction using the temporal prediction information and excluding the detected areas from the given frame, giving rise to a remaining frame area;
performing a temporal filtration on the remaining frame area, giving rise to a temporal filtered frame;
and
performing a spatial filtration on the temporal filtered frame, giving rise to a grain filtered frame;
thereby obtaining a sequence of grain filtered frames constituting the pre-processed video information;
and
encode the pre-processed video information.

8 more elements

Dependencies are inferred from the claim text.

Method of pre-processing of video information for optimized video encoding

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Method of pre-processing of video information for optimized video encoding

Life of this patent

Abstract

Claims51