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A 3D Data Encoding and Decoding Method with Error Feedback

An encoding and decoding method and three-dimensional data technology are applied in the field of three-dimensional data encoding and decoding with error feedback, which can solve the problems of low precision of compression methods, and achieve the effects of reducing precision control requirements, improving restoration precision, and high precision.

Active Publication Date: 2017-12-15
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0004] In order to solve the problem of low accuracy of existing two-dimensional image-based compression methods, the present invention provides a three-dimensional data encoding and decoding method with error feedback, which can ensure a higher compression ratio while obtaining a higher three-dimensional Data Recovery Accuracy

Method used

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  • A 3D Data Encoding and Decoding Method with Error Feedback
  • A 3D Data Encoding and Decoding Method with Error Feedback
  • A 3D Data Encoding and Decoding Method with Error Feedback

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Embodiment 1

[0020] Since the three-dimensional data encoding and decoding method with error feedback of the present invention is a loop feedback closed-loop system, the encoding and decoding process is generally introduced first, and then each stage and process is specifically introduced.

[0021] The overall encoding and decoding process is as follows figure 1 shown. Obtain the original 3D data (step 10), undergo initial encoding (step 11), obtain the compressed result (step 12), then decode the compressed result (step 13), obtain the reconstructed 3D data (step 14), and evaluate the accuracy of the reconstruction result , judge whether the reconstruction accuracy meets the requirements (step 15), if the judgment result of step 15 is no, calculate the error of the reconstruction result and encode the error, store it in the compression result (step 16), return to step 12; if step 15 The judgment result of is yes, then the encoding stage ends, and the final compression result is obtained ...

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Abstract

The invention provides a three-dimensional data coding and decoding method with error feedback, and the method comprises the steps: building a virtual three-dimensional projection system during initial coding, achieving the conversion from original three-dimensional data to a two-dimensional image or an image sequence, further converting the image or image sequence into a binary image or an image sequence through quantification, and then compressing and storing the image or image sequence in a certain mode; carrying out decompression and inverted conversion of compression results during decoding, obtaining the two-dimensional image or image sequence, and obtaining an initial reconstruction result through further three-dimensional reconstruction; carrying out the decoding of the compression results if the compression results have error information, compensating the initial three-dimensional data, and obtaining reconstructed three-dimensional data. During error coding, the method calculates the reconstructed three-dimensional data or the error of corresponding phase information, and enables the error information to be coded and stored in the compression results in a certain mode according to the requirements of reconstruction precision.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional data compression, and in particular relates to a three-dimensional data encoding and decoding method with error feedback. Because the present invention stores and utilizes the initially reconstructed three-dimensional data or the error information of the corresponding phase, the encoding and decoding process of the three-dimensional data becomes a closed-loop system, which can greatly improve the accuracy of the three-dimensional data compression algorithm based on two-dimensional images. Background technique [0002] With the development of computer and electronic technology, 3D scanning and imaging technology has become quite popular and common. For example, in the fields of industrial production, biomedicine, scientific research, and audio-visual entertainment, 3D imaging equipment has been widely used. The application of these advanced instruments and technologies, on the one hand, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597
Inventor 王亚军张连新王宝瑞吉方阳红
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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