Encoding and decoding method and encoding and decoding device for depth image

Abstract

The embodiment of the invention provides an encoding and decoding method and equipment for a depth image. The method comprises the following steps of determining to perform SDC decoding according to a depth encoding mode SDC flag bit; determining the size of an image block and a maximum predicted size; determining an inner-frame prediction mode; and under the condition that the size of the image block is larger than the maximum prediction size, partitioning the image block to obtain N partitioned image blocks, and performing SDC decoding on the N partitioned image blocks by using the inner-frame prediction mode. Due to the adoption of the method and the equipment, the encoding and decoding processing efficiency of the depth image can be increased.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless communication, and more specifically, to a codec method and a codec device for a depth image. Background technique [0002] There are two types of 3D video images: view images and depth images. A view image contains information about the image itself, such as color information. A depth image contains depth information of a view image, such as contour information. During the transmission of 3D video images, in order to reduce the bandwidth occupied by video transmission, it is necessary to encode the view image and the depth image, so as to reduce the size of 3D video image data. [0003] Simplified Depth Coding (Simplified Depth Coding) is a method for encoding depth images. When the image block of the depth image that needs to be subjected to SDC is determined, the encoding end needs to select an intra-frame prediction mode and determine the prediction data of the image ...

AI Technical Summary

Problems solved by technology

However, in the prior art, the maximum prediction size (that is, the maximum size of an image block for SDC) is limited, and the size of an image block may be larger than the maximum prediction size, for example, the size of an image block is 64*64, and The maximum prediction size is 32*32

At this time, when performing SDC on the image block, the codec system needs to introduce an image block larger than the maximum predicted size, which will increase the design overhead of the codec system

Additionally, the DMM does not support image blocks larger than the maximum predicted size

Therefore, in the case that the size of the image block is larger than the maximum prediction size, the DMM cannot be selected to perform SDC on the image block, resulting in a decrease in coding efficiency

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