图像编码 / 解码设备以及发送数据的设备
By using the LFNST indexed encoding method to encode and decode images, the problem of high transmission and storage costs for high-resolution, high-quality images/videos is solved, achieving more efficient image/video compression and transmission.
CN117560508BActive Publication Date: 2026-07-17NOKIA TECHNOLOGIES OY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NOKIA TECHNOLOGIES OY
- Filing Date
- 2020-09-18
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies, when transmitting and storing high-resolution, high-quality images/videos, result in high costs due to increased information volume, and the broadcasting needs for immersive media and images/videos with different image characteristics have not been effectively addressed.
Method used
The LFNST index coding method is used to encode and decode images by deriving modified transform coefficients and applying the LFNST matrix, which is suitable for sub-partition transform blocks.
Benefits of technology
It improves image/video compression efficiency and transform index coding efficiency, making it suitable for efficient compression and transmission of high-resolution and high-quality images/videos.
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Smart Images
Figure CN117560508B_ABST
Abstract
本公开涉及一种图像编码 / 解码设备以及发送数据的设备。根据本文档的图像解码方法包括用于推导经修改的变换系数的步骤，其中，用于推导经修改的变换系数的步骤包括基于当前块的宽度和高度是否满足关于是否可以应用LFNST的条件来确定是否解析LFNST索引的步骤，并且是否满足关于是否可以应用LFNST的条件是基于当前块的树类型和颜色格式以及ISP是否被应用于当前块来确定的。
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