Video encoding methods and devices

Abstract

A dual, and possibly multiple, frame approach is used by the invention. Embodiments of the invention include making a decision to use a long term reference frame, which is a frame other than an immediate past reference frame, to conduct INTER coding, or to conduct INTRA frame coding. Other embodiments include use of long and short term reference blocks, and make a decision between two types of INTER coding blocks and INTRA coding. In accordance with embodiments of the invention, a long term frame is a high quality frame. The high quality frame may be used as a reference frame under particular conditions.

Description

technical field [0001] The field of the invention is image and video coding. Other areas of the invention include digital communication and digital storage of images and video. Background technique [0002] Digital communication and storage of image data is a difficult task due to the sheer amount of digital data required to accurately describe a single frame of an image. In video, the amount of data can quickly become very large. Image coding attempts to make the communication and / or storage of image data manageable by compressing the image data, ie by reducing the amount of data necessary to represent an image. For example, communication resources have limited bandwidth. This is especially true in the wireless communication medium. There are trade-offs in image data encoding. For example, reducing data size should not degrade image quality more than acceptable. Furthermore, it is necessary to manage computing cost and speed, especially in devices that should save com...

AI Technical Summary

Problems solved by technology

The same is true for the memory requirement, where the increase is also linear and thus disallowed as the number of reference frames increases

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