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Embedded H.264 coding method based on TMS320DM642 chip

A technology of TMS320DM642 and coding method, applied in the field of video coding, can solve the problem of not supporting interlaced video and CABAC, and achieve the effect of saving memory requirements, improving coding efficiency and high coding efficiency

Active Publication Date: 2011-07-27
BEIJING TELESOUND ELECTRONICS
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Problems solved by technology

[0011] 3. Extended grade: support effective switching between code streams (SP and SI slices), improve bit error performance (data segmentation), but do not support interlaced video and CABAC

Method used

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  • Embedded H.264 coding method based on TMS320DM642 chip
  • Embedded H.264 coding method based on TMS320DM642 chip
  • Embedded H.264 coding method based on TMS320DM642 chip

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Embodiment Construction

[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] The encoding scheme proposed in this paper, on the basis of satisfying the basic level of H.264, screens and recombines the existing encoding methods, and according to the special requirements of the monitoring field, selects the main level to integrate the practical functions of the monitoring field , to achieve the H.264 monitoring level that meets the monitoring requirements.

[0045]The coding subject framework proposed by the present invention adopts the commonly used structure of H.264 video coding, wherein I frame coding, P frame coding and B frame coding use main technologies including data moving parallel coding, intra-frame (Intra) prediction, inter-frame ...

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Abstract

The invention discloses an embedded H.264 coding method based on a TMS320DM642 chip, which comprises the following steps of: realizing transmission and coding of input data and reconstructed data concurrently by utilizing the concurrency of quick direct memory access (QDMA) in the TMS320DM642 chip, utilizing a ping-pang structure as a basis and adopting a mode of transfer of the two-level data ofa band and a macro block; realizing intra-frame prediction, transformation quantization and on-chip loop filtering by adopting an on-chip data processing structure of data to be coded; and realizing the intra-frame prediction and motion compensation by adopting an on-chip motion searching window and an on-chip interpolation structure. A coder or a coding module implemented by the method saves internal memory usage greatly and can realize real-time coding of an eight-path common intermediate format (CIF).

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to an embedded H.264 coding method based on a TMS320DM642 chip. Background technique [0002] With the development of digital technology and network technology, video technology in the field of security monitoring has also entered the stage of digitalization and networking, which makes the transmission and management of video images in traditional monitoring systems unified. The digitization of video started from the hard disk video recorder, and the video compression technology is the core technology of the hard disk video recorder. At present, in the field of video surveillance, the mainstream compression standard adopts H.264. According to the data, the H.264 video compression standard has been widely used in the field of video surveillance because of its high coding efficiency and transmission performance. Its final standard has been supported by ISO / IEC (as the tenth part...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N19/423H04N19/436H04N19/61
Inventor 谭政
Owner BEIJING TELESOUND ELECTRONICS
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