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Method and system for conveying video picture

A picture and video technology, applied in the field of video picture transmission, can solve the problems of insufficient data, affecting the quality of video calls, and the video quality has not yet been formulated

Inactive Publication Date: 2009-02-25
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, currently in the 3G-324M communication standard, there is no relevant mechanism for controlling video quality with reference to network traffic
Therefore, even when the network is already quite congested, the video transmission end will not control the bit rate when encoding the video picture, so there may be situations such as insufficient data and video picture delay due to limited bandwidth. , affecting the quality of the video call

Method used

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  • Method and system for conveying video picture
  • Method and system for conveying video picture
  • Method and system for conveying video picture

Examples

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Embodiment 3

[0047] Figure 4 It is a flow chart of the video image transmission method according to the third embodiment of the present invention. In this embodiment, in addition to transmitting the motion vector corresponding to the changing part of the user's face area instead of transmitting the entire video frame, only half of the face is transmitted according to the symmetry of the user's face area The movement vector of the area is given to the receiving end to restore the video image, and the detailed steps are as follows:

[0048] In step 410, the first video frame is captured by the sending end. Then in step 420, the user's face area in the first video frame is detected and recorded as face data. Among them, the user's facial area can be, for example, a rectangular block with the smallest area obtained by extending the user's facial contour outward, and the coordinate data of the upper left corner of the rectangular block and the length and width of the rectangular block can be...

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Abstract

The invention relates to a video image transmitting method and a system. A transmitting terminal only detects and transmits a motion vector corresponding to the change section of the face of a user to a receiving terminal after transmitting a first video image to the receiving terminal, and the motion vector is integrated with the first video image by the receiving terminal to recover the entire video image. Accordingly, the method can effectively reduce the requirement for the network bandwidth and maintain the video quality.

Description

technical field [0001] The present invention relates to a method and system for transmitting a video picture, in particular to a method and system for transmitting and reconstructing a video picture by calculating the motion vector of a face area in the video picture. Background technique [0002] With the advancement of wireless communication technology and the rapid development of broadband systems, people not only communicate with voice and text in the wireless communication network, but also because of the increase of network bandwidth, it is very important to send and receive pictures, music, or video, etc. When it comes to large-capacity data, it is almost no longer limited by the network transmission speed. Because of this, video calls have gradually become a new trend in instant messaging. Different from the traditional way of calling, video calls can not only communicate in voice, but also see each other's expressions and actions during the entire call. [0003] A...

Claims

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Application Information

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IPC IPC(8): H04N7/14G06T7/00
Inventor 艾斯拉夫林嘉庆
Owner SUNPLUS TECH CO LTD
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