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Method for realizing realtime video transmission by wavelet

A technology of real-time transmission and wavelet transform, applied in the direction of digital video signal modification, TV, two-way working system, etc., can solve problems such as low bandwidth, limited video codec capability, network instability, etc., achieve high compression ratio, solve video Unsmooth playback

Inactive Publication Date: 2007-09-05
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For wireless mobile devices, it cannot meet the needs of real-time video transmission of mobile devices
Because the computing power of mobile devices is generally low, and the CPU speed varies greatly. Some smart phones

Method used

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  • Method for realizing realtime video transmission by wavelet
  • Method for realizing realtime video transmission by wavelet

Examples

Experimental program
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Example Embodiment

[0027] One of the embodiments will be described below with reference to the accompanying drawings. As shown in Figure 1 and Figure 2, both the video sending end and the video receiving end include the following steps:

[0028] The video sender includes the following steps:

[0029] 1) After the video sending end and the receiving end are connected, the video sending end first sends a detection data packet before sending the video data. After the receiver receives the data, it sends a feedback packet containing the configuration information of the receiver. The feedback packet includes the receiver's CPU speed, memory size, and screen resolution.

[0030] 2) The video sending end captures video information through a camera, and the first frame of the video information undergoes HAAR wavelet transform to obtain the information of the separation of high and low frequencies of the video information. Since the DCT transform belongs to the transform in the frequency domain and does...

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Abstract

The method comprises a video signals sending step and a video signals receiving step. The video signal sending step comprises: the sending end gets the configuration information of the receiving end, and determines quantification coefficient; the sending end captures the video information through the video capturing device, and makes HAAR wavelet transformation; the according to the quantification coefficient makes quantification process; sends the video signal to the video receiving end. The video signals receiving step comprises: after receiving the data from the sending end, firstly making decode, and then making RHAR transformation; finally, outputting the video data.

Description

technical field [0001] The invention belongs to the field of computer digital image processing and the technical field of multimedia message service, in particular to a method for realizing real-time video transmission by using wavelet transform. Background technique [0002] At present, the digital media industry is developing at a high speed, and the feature of video containing massive information makes it an important source of information for people to obtain in the future digital life. At the same time, with the rapid development of network technology and embedded technology, the embedded real-time video system is facing a new technology bottleneck that needs to be solved urgently. [0003] Currently, the codec methods for video transmission mainly include MEPG, H.264, AVS, etc. Each has its own characteristics: H.264 can realize real-time encoding of D1 resolution (720*480) video, and for decoding, an ordinary PC can realize smooth playback of x264 encoded DVDrip movi...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/30H04N7/14H04N19/124H04N19/63
Inventor 吴佳文罗笑南
Owner SUN YAT SEN UNIV
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