18525179. BDOF-BASED INTER PREDICTION METHOD AND DEVICE simplified abstract (LG Electronics Inc.)

BDOF-BASED INTER PREDICTION METHOD AND DEVICE

Organization Name

LG Electronics Inc.

Inventor(s)

Naeri Park of Seoul (KR)

Junghak Nam of Seoul (KR)

Hyeongmoon Jang of Seoul (KR)

BDOF-BASED INTER PREDICTION METHOD AND DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18525179 titled 'BDOF-BASED INTER PREDICTION METHOD AND DEVICE

Simplified Explanation

The image decoding method described in the abstract involves deriving motion vectors, deriving prediction samples, and generating reconstructed samples based on the motion vectors and prediction samples.

• Deriving an L0 motion vector and a L1 motion vector of the current block.
• Deriving prediction samples of the current block based on the L0 motion vector and the L1 motion vector.
• Generating reconstructed samples of the current block based on the prediction samples.
• Applying bi-directional optical flow (BDOF) to the current block based on certain conditions, including the values of L0 luma weighted prediction flag information and L1 luma weighted prediction flag information being zero.

---

1. 1. 1. Potential Applications

- Video compression technology - Image processing algorithms

1. 1. 1. Problems Solved

- Efficient image decoding methods - Improved video quality

1. 1. 1. Benefits

- Higher compression rates - Enhanced image quality

1. 1. 1. Potential Commercial Applications
         1. Optimizing Video Compression

- Implementing advanced image decoding methods in video streaming services

1. 1. 1. Possible Prior Art

There may be existing patents related to motion vector prediction in video compression algorithms.

---

1. 1. 1. 1. Unanswered Questions

1. 1. 1. How does this method compare to existing image decoding techniques?

This article does not provide a direct comparison to other image decoding methods, leaving the reader to wonder about the specific advantages of this approach.

1. 1. 1. What impact could this technology have on the video streaming industry?

The potential implications for video streaming services and their users are not explicitly discussed in the article, leaving room for speculation on the broader industry impact.

Original Abstract Submitted

An image decoding method includes: deriving an L0 motion vector and a L1 motion vector of the current block; deriving prediction samples of the current block based on the L0 motion vector and the L1 motion vector; and generating reconstructed samples of the current block based on the prediction samples. Deriving the prediction samples includes applying bi-directional optical flow (BDOF) to the current block based on whether the condition for applying BDOF to the current block is satisfied, and the application condition of the BDOF includes a condition whereby the values of L0 luma weighted prediction flag information and L1 luma weighted prediction flag information are both zero, where the a value of each of the L0 luma weighted prediction flag information and L1 luma weighted prediction flag information being 0 represents that a weight factor for each of a L0 and L1 prediction luma components does not exist, respectively.