Two-way video coding and decoding system and method based on video mobile equipment

A codec method and mobile device technology, applied in digital video signal modification, electrical components, image communication, etc., can solve low-complexity problems, improve reconstruction effects, avoid motion estimation operations, and improve prediction accuracy

Inactive Publication Date: 2015-01-21
HOHAI UNIV CHANGZHOU
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Problems solved by technology

Therefore, encoding complexity and decoding complexity are a pair of contradictions, and the two-way video codec system

Method used

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  • Two-way video coding and decoding system and method based on video mobile equipment
  • Two-way video coding and decoding system and method based on video mobile equipment
  • Two-way video coding and decoding system and method based on video mobile equipment

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Embodiment Construction

[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] The two-way video encoding and decoding system based on the mobile device proposed by the present invention can be completed by software or by an embedded hardware system. figure 1 Provided is the structural block diagram of the two-way video codec system proposed by the present invention, wherein the video acquisition input can be the video input terminal of some low-energy devices such as mobile phone cameras and sensor network cameras; the encoder and decoder can be realized by software, and also The embedded parallel machine can be used as a mobile terminal, and the codec is integrated in the same mobile terminal device; the video transcoder is generally a high-performance server; the network can be wired or wireless.

[0030] see fig...

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Abstract

The invention discloses a two-way video coding and decoding system and method based on video mobile equipment. The system and method can achieve low-complexity coding and decoding. An H.264 intra-frame coding mode is adopted in frames I and a block sorting compressive sampling coding mode is adopted in frames P through a low-complexity video coder of a mobile terminal, and compressed code streams are generated and serve as input code streams of a transcoder; the transcoder based on a cloud server reconstructs and decodes the frames P through multi-assumption optical prediction, multi-assumption motion estimation vectors and residual errors are generated, and through 4X4 block integer conversion and quantification in the H.264 standard, residual error frame conversion code steams are generated and sent to the video decoder end in the mobile terminal; a low-complexity video decoder of the mobile terminal conducts H.264 intra-frame decoding on the frames I, generates prediction frames for the frames P through multi-assumption motion estimation vectors, and further generates reconstructed frames P through the residual error code streams. By the adoption of the system and method, complex multi-assumption optical prediction is transferred to the transcoder end, the complexity of the coder and the complexity of the decoder are lowered at the same time, and the requirements for two-way video monitoring application on the mobile equipment are met.

Description

technical field [0001] The invention belongs to the field of video coding, and in particular relates to a mobile device-based two-way video coding and decoding system and method thereof. Background technique [0002] Under the background of the rapid development of mobile Internet, mobile video surveillance technology has become the top priority of its development. Mobile video monitoring breaks through the geographical restrictions and realizes remote monitoring. At the same time, users also put forward higher demands. With the development of mobile phones and Pads, people use mobile phones more and more frequently every day, and monitoring is no longer satisfied with In the monitoring room and on the PC, the demand for monitoring by the mobile phone as the client is becoming more and more apparent. Mobile terminals not only have the function of video decoding, but also have the function of video acquisition and decoding, which puts forward new requirements for the two-way...

Claims

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Application Information

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IPC IPC(8): H04N19/159H04N19/40H04N19/176H04N19/137
Inventor 朱金秀张瑶倪建军张学武樊宇航任旭东倪舒淇
Owner HOHAI UNIV CHANGZHOU
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