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Tag-tree encoding method based on JPEG2000

A coding method and coding technology, applied in the field of image processing, can solve problems such as large clock resources and clock waste, and achieve the effects of saving storage resources, avoiding reading, and avoiding storage

Inactive Publication Date: 2009-02-04
SHANDONG HUAYU AEROSPACE TECH CO LTD
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Problems solved by technology

In the tree building process, the parent node is refreshed by writing to the leaf node. This step-by-step comparison method will consume more clock resources. In addition, the encoding uses the mark whether the node has been edited, and the encoding code is generated by the step-by-step comparison method. flow, these will cause a waste of clock

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  • Tag-tree encoding method based on JPEG2000
  • Tag-tree encoding method based on JPEG2000
  • Tag-tree encoding method based on JPEG2000

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Embodiment Construction

[0043] The structure of the present invention adopts XILINX ISE 9.1 integrated development software and Verilog HDL language, realizes on the Virtex-IV XC4Vfx140-11ff1517 programmable chip of XILINX company.

[0044] The Tag-tree encoding containing information is in the packaging process, with the current layer where the packaging is located as the threshold value, to control the output of the Tag-tree code stream containing information, that is, the code stream of a Tag-tree encoding containing information in a code block It is output in the packet header distributed in different layers. For the JPEG2000 hardware system, if during the packaging process, the information encoding module is called in real time to generate the encoded code stream, it will put a lot of pressure on the control of the packaging module, and the information encoding module will occupy the output time of the packaging module, reducing the The throughput of the packed module. This paper proposes to us...

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Abstract

The invention discloses a Tag-tree coding method based on JPEG2000 which relates to the technical field of the image processing. The invention has the coding processes: interception on every layer is firstly carried out on code stream of T1 coding to count layer information which is included by each code block for the first time; inclusion information of all the code blocks in a wavelet subband is secondly caused to form a leaf node sequence of a Tag-tree, and tree building is carried out on inclusion information in the leaf node sequence to form a parent node thereof; coding is carried out on the leaf node sequence of the Tag-tree according to the parent node; and coding results of nodes in the leaf node sequence of the Tag-tree are finally separated to coated heads of every layer. The invention simplifies the corresponding relation of the parent node and child nodes, enhances the coding speed, and can be used for image compression coding of various digital equipment.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a JPEG2000-based Tag-tree differential encoding and separation technology, which is used for image compression encoding of various digital devices. Background technique [0002] With the development and application of multimedia and network technology, the existing still image compression standard JPEG can no longer meet the requirements of the current market and practical applications. Therefore, the International Standard Organization formulated a new standard JPEG2000 for still image compression in November 2000. The new standard adopts the wavelet transform and rate-distortion optimization proposed by Australian scholar David Taubman in High Performance Scalable Image Compression with EBCOT (IEEE Trans.ImageProcessing, vol.9, no.7, pp.1158-1170, July 2000) Intercepted Embedded Code Block Coding Algorithm (EBCOT), which is divided into two parts, T1 and T2. T1 is com...

Claims

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Application Information

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IPC IPC(8): H04N7/26G06T9/40H04N19/147H04N19/157H04N19/176H04N19/30H04N19/63
Inventor 李云松马娜王柯俨刘凯吴成柯
Owner SHANDONG HUAYU AEROSPACE TECH CO LTD
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