Video Encoding and Decoding With TIP Frame Signal Skipping

Solution Overview

Problem

Current video coding methods face increased bit overhead due to coding invalid information, reducing coding performance and efficiency.

Innovation Solution

Implementing temporal interpolated prediction (TIP) by determining whether to use a TIP frame as an output picture and skipping decoding or encoding first information related to a first interpolation filter for a current block, thereby performing interpolation filtering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If temporal interpolated prediction (TIP) frame is used as output picture, then coding efficiency is improved, but bit overhead increases due to coding invalid information

Engineering Contradiction:

Improvecoding efficiencyVSAvoidbit overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent extracts and removes the invalid first information (interpolation filter indication) from the bitstream when TIP frame is used as output picture. This extraction eliminates the source of bit overhead while preserving the useful TIP prediction functionality, directly resolving the contradiction between coding efficiency improvement and bit overhead increase

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter state by conditionally skipping decoding/encoding of the first information based on the TIP frame usage flag. When TIP frame is used as output picture, the parameter (first information) is set to be skipped, thereby reducing bit overhead while maintaining coding efficiency

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If first information is decoded/encoded to indicate first interpolation filter, then interpolation filtering accuracy is improved, but coding performance decreases due to invalid information

Engineering Contradiction:

Improveinterpolation filtering accuracyVSAvoidcoding performance

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent extracts and removes the invalid first information (interpolation filter indication) from the bitstream when TIP frame is used as output picture. This extraction eliminates the source of bit overhead while preserving the useful TIP prediction functionality, directly resolving the contradiction between coding efficiency improvement and bit overhead increase

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system determines automatically whether to skip first information based on the TIP frame usage flag without requiring explicit signaling. The decoder/encoder uses the already-decoded/encoded flag information to make the decision, making the system self-regulating and eliminating invalid information transmission

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250260814A1Video encoding method, video decoding method, apparatus, device and storage medium

Publication Date: 2025.08.14 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A video encoding method includes that: when encoding or decoding a current picture, first determining whether the current picture needs to use a TIP frame as an output picture of the current picture, in response to that it is determined that the TIP frame corresponding to the current picture needs to be used as the output picture of the current picture, skipping encoding or decoding first information corresponding to the current picture, where the first information is used to indicate a first interpolation filter, and the first interpolation filter is used to perform interpolation filtering on a reference block of a current block in the current picture.