Video coding method and video coding device

Abstract

An image encoding method and an image encoding device, encoding an uncompressed original image, comprising the steps of: dividing the original image into a plurality of blocks (S110); determining an encoding condition of an object block as one of the plurality of blocks (S120 ); according to the determined coding condition, the target block is coded (S130), and in the determination of the coding condition of the target block (S120), the first spatial activity as a value representing the complexity of at least a part of the target block is calculated value (S210), compare the calculated first spatial activity value with a predetermined first threshold (S220), and if the first spatial activity value is smaller than the first threshold, the first coding condition for small segmentation Determine the encoding condition for the target block (S230), and determine the second encoding condition for large partition as the encoding condition for the target block when the first spatial activity value is greater than or equal to the first threshold (S240).

Description

technical field [0001] The present invention relates to an image encoding method and an image encoding device, and more particularly to an image encoding method and an image encoding device for determining encoding conditions for each block and encoding a target block according to the determined encoding conditions. Background technique [0002] In general, the block division method is applied to most image / moving image coding algorithms such as ISO / IEC14496-2 Part 10 international standard specification (see Non-Patent Document 1). In the block division method, an uncompressed original picture (picture) is divided into a plurality of M×N coding units. Here, M represents the number of samples in width, and N represents the number of samples in height. The values ​​of M and N are, for example, 16, respectively. [0003] The resulting coding units are sequentially coded one after the other. For example, in most video coding algorithms such as Part 10 of ISO / IEC 14496-2, the...

AI Technical Summary

Problems solved by technology

[0018] However, in the prior art technique of selecting a sub-macroblock encoding tool to perform using an exhaustive selection process based on encoding cost based on the relationship between encoding rate and distortion In , there is the problem of calculating the encoding cost without considering or predicting the encoding effect on the human visual system

Therefore, the determined sub-macroblock coding tool is not an efficient coding tool for reducing ringing or blocking artifacts

Moreover, the extensive selection process of the prior art requires the encoder to perform a large number of calculations

Images