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Method for reducing video decoding complexity via decoding quality

A video decoding and complexity technology, applied in the direction of pulse modulation TV signal transmission, etc., can solve the problems of pause, display frame rate drop, discontinuity, etc., and achieve the effect of maintaining coherence and maintaining visual effects

Inactive Publication Date: 2007-11-28
INST OF ACOUSTICS CHINESE ACAD OF SCI +1
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  • Application Information

AI Technical Summary

Problems solved by technology

In the MPEG video playback system, such a problem is often encountered: the average decoding complexity of the video sequence input to the playback terminal exceeds the processing capability of the terminal. When the decoder has decoded several frames of video images, the current time of the system will be Lag behind the normal display time of the video frame, if you continue to decode frame by frame, the lag of the video image display will be further aggravated, causing the user to see a slow video
Although frame loss can try to keep the display time of the decoded video image close to the display time required by the video image, frame loss means a decrease in the display frame rate, which is likely to cause discontinuity and pause when viewing

Method used

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  • Method for reducing video decoding complexity via decoding quality
  • Method for reducing video decoding complexity via decoding quality
  • Method for reducing video decoding complexity via decoding quality

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] The method for reducing video decoding complexity through decoding quality control of the present invention can be applied to the digital TV broadcasting system as shown in FIG. 1 . The set-top box sends a video service request to the streaming media server through the broadband network. The streaming media server responds to the request and sends video data to the set-top box through the network. After receiving the video data, the set-top box decodes it and sends it to the TV for display. In this embodiment, the network bandwidth of the system can meet the transmission requirements of the video stream, and the network receiving module of the set-top box also has sufficient capacity to receive data, but the video decoding capability of the set-top box is insufficient to meet the requirements for real-time processing of all data of the vi...

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Abstract

This invention discloses a method for reducing complexity of video decode by controlling decode quality including: a video terminal receives video frames and computes balance between labels of the system time of the terminal and the display time of the current frames then to estimate the video decode pressure based on the balance to determine grade of the pressure, controls the decoding quality to the current frames to select simplified algorithm when decoding according to a chroma prior process strategy and an edge prior process strategy to determine the process degree then to decode the video frames.

Description

technical field [0001] The present invention relates to a video playing terminal, in particular to a video playing terminal with limited multimedia processing capability. Background technique [0002] The MPEG video compression standard is currently the most widely used video compression standard. The decoding process of MPEG video generally includes the following steps: [0003] 1), variable length entropy decoding; [0004] 2), inverse quantization; [0005] 3), Inverse Discrete Cosine Transform (IDCT, Inverse Discrete Cosine Transform); [0006] 4), motion compensation. [0007] In new standards such as H.264, an in-loop deblocking filtering link is also included after motion compensation. The specific technical details of the above decoding process can be found in Reference 1: "ISO / IEC 14496-2" (MPEG4 Video Codec Standard) and Reference 2: "ISO / IEC 14496-10" (H.264 Video codec standard). [0008] With the increase of MPEG video coding complexity, the pressure of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24
Inventor 陈志辉张泰乐陈国平贺鹏程
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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