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Image data Huffman decoding device and method

An image data and decoding device technology, applied in the field of image processing, can solve the problems of low Huffman decoding efficiency and the like

Active Publication Date: 2017-01-18
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
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Problems solved by technology

[0005] Embodiments of the present invention provide a Huffman decoding device and method for image data to at least solve the technical problem of low Huffman decoding efficiency in the prior art

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  • Image data Huffman decoding device and method

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Embodiment Construction

[0026]In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate c...

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Abstract

The invention discloses an image data Huffman decoding device and method. The image data Huffman decoding device comprises a number of encoding stream inputting units Pi which are used for receiving encoding stream Li in multi-channel Huffman encoding stream representing image data, a Huffman decoding unit which is used for parallel-decoding multi-channel Huffman encoding stream to acquire multi-channel Huffman decoding stream and decoding the encoding stream Li to acquire decoding stream Mi, and a number of output units Qi which are used for outputting the decoding stream Mi. According to the invention, the Huffman decoding device is used to decode a number of Huffman codes or video images in parallel; the decoding speed and efficiency are greatly improved; less logic resources are occupied; the cost input is reduced; the decoding efficiency is improved; and the technical problem of the low efficiency of Huffman decoding in the prior art is solved.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a Huffman decoding device and method for image data. Background technique [0002] With the advancement of technology, people have higher and higher requirements for video resolution. In video coding and decoding, the efficiency of Huffman decoding is often the key factor restricting the overall efficiency. If the decoding efficiency is low, it is easy to cause video In order to improve the effect of Huffman decoding, a patent application document with application number 201010585313.X in the prior art discloses a hardware decoding method and device for paradigmatic Huffman in JPEG images. , which includes a shift register, the shift register temporarily stores the currently decoded bit stream; the comparator compares the value of the last code word of the current length with the value of the shift register to determine whether a normalized Huffman code word is found; the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/44H04N19/13H04N19/625
Inventor 柳睿周琦徐宁
Owner HANGZHOU HIKVISION DIGITAL TECH
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