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Image error hiding method and image error hiding system

An error concealment, image technology, applied in the field of image processing, can solve problems such as low processing efficiency, achieve efficient image error concealment, realize image error concealment, and improve recognition efficiency.

Active Publication Date: 2016-07-20
SYSU CMU SHUNDE INT JOINT RES INST +2
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AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide an efficient image error concealment method and system for the problem of low processing efficiency of general image error concealment methods

Method used

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  • Image error hiding method and image error hiding system
  • Image error hiding method and image error hiding system
  • Image error hiding method and image error hiding system

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Experimental program
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Embodiment Construction

[0021] Such as figure 1 As shown, an image error concealment method includes steps:

[0022] S200: Preliminarily analyze the type of the missing block in the image data, and obtain an initial type analysis result of the missing block, wherein the types of the missing block include smooth blocks, texture blocks, and edge blocks.

[0023] Preliminary analysis is made on the types of lost blocks in image data. Generally, the types of lost blocks include smooth blocks, texture blocks and edge blocks.

[0024] S400: Using the Hedge algorithm in the FPGA, the initial type analysis result is corrected to determine the type of the missing block.

[0025] FPGA has powerful parallel processing capability, and parallel processing capability means that multiple threads can process multiple tasks at the same time. In this step, the parallel processing of the Hedge algorithm in the FPGA is used to confirm the type of the lost block for the second time. Using FPGA parallel processing meth...

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Abstract

The invention provides an image error hiding method and an image error hiding system. The type of a lost block in image data is preliminarily analyzed. The type of the lost block comprises smooth block, textured block and edge block. An initial type analysis result is corrected through a Hedge algorithm in the FPGA for determining the type of the lost block. A lost block recovering mode is determined according to the type of the lost block. Error hiding is performed on the image according to the determined lost block recovering mode. In the whole process, the type of the lost block is determined secondarily through the Hedge algorithm in the FPGA. Identification efficiency for the type of the lost block is improved by means of strong parallel processing capability of the FPGA, thereby preventing identification limitation for the type of the lost block by performance of a CPU, and realizing high-efficiency image error hiding.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image error concealment method and system. Background technique [0002] In the process of image transmission, it is inevitable to be disturbed by noise, and the instability of the device due to environmental changes will cause the loss of information frames. If it is not corrected, mosaic phenomenon will appear and the user experience will deteriorate. [0003] The general image error concealment is based on the software. First, the error judgment is made on the image to judge whether there is an information block lost during the transmission process. , smooth block or edge block. [0004] Based on the block classes at the edge of the missing block, predict which is the most likely missing block. After the type is discriminated, the corresponding method is discriminated according to the discriminated type. The above method is based on software processing, which is...

Claims

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Application Information

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IPC IPC(8): H04N19/895
CPCH04N19/895
Inventor 李贤琴王军谭洪舟赵希军
Owner SYSU CMU SHUNDE INT JOINT RES INST
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