Method and system for video calling

A video call and video image technology, applied in the transmission system, two-way work system, TV, etc., can solve the problems of increasing local terminal load, large data volume, occupying terminal processing performance, etc., to reduce computing load, accurately play, improve The effect of user experience

Active Publication Date: 2019-08-20
CHINA COAL ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because video images are collected very frequently during video calls, and the amount of data is very large, the task of rotating video images will increase the load on the CPU of the local terminal and occupy the processing performance of the terminal.

Method used

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  • Method and system for video calling
  • Method and system for video calling
  • Method and system for video calling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] According to a preferred embodiment of the present invention, the method also includes the steps of:

[0049] During a video call:

[0050] The first terminal and the second terminal respectively monitor whether the rotation angle values ​​of the first video image and the second video image collected by themselves in real time change:

[0051] If the rotation angle value of the first video image changes, the first terminal sends an Info message carrying the rotation angle value of the first video image collected by the first terminal in real time to the second terminal, and the image decoder of the second terminal transmits an Info message according to the Info message. The rotation angle value of the first video image in the first video image is rotated, and the angle of the first video image is adjusted to play correctly;

[0052] If the rotation angle value of the second video image changes, the second terminal sends an Info message carrying the rotation angle value...

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PUM

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Abstract

The present invention discloses a video call method and system. The method includes: a first terminal sends a call message carrying a rotation angle value of a first video image collected by the first terminal in real time to a second terminal; and the second terminal receives the call message Reply to the first terminal a 200ok message carrying the rotation angle value of the second video image collected by the second terminal in real time; after receiving the 200ok message, the first terminal replies an ACK message to the second terminal to establish a video call; the first terminal and the second The terminals send their respective collected video images to each other; the first terminal initializes the image decoder of the first terminal according to the rotation angle value of the second video image, and performs image rotation on the second video image; the second terminal rotates the image according to the rotation angle value of the first video image The value initializes the image decoder of the second terminal to perform image rotation on the first video image. The present invention reduces the calculation load of the CPU of the terminal during the video call process.

Description

technical field [0001] The present invention relates to the technical field of terminals. More specifically, it relates to a video call method and system. Background technique [0002] With the rapid development of terminal technology and network technology, video calls have been more and more widely used. When a video call is made between two terminals, the image processing method is as follows: after the video image is collected by the camera of the terminal, the local terminal that collects the video image performs YUV component rotation on the video image, encodes it, and finally transmits it to the other party through the network terminal. Wherein, each terminal respectively includes a CPU, a video image acquisition unit, a transceiver unit, an image encoder, an image decoder and a display unit. [0003] When making a video call between two terminals, such as figure 1 As shown, the calling terminal and the called terminal establish a session through SIP (Session Ini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14H04N21/4788H04N21/44H04L29/06
CPCH04N7/147H04N21/44008H04N21/4788H04L65/75H04L65/1104
Inventor 田敬秋魏星唐黎明王景阳何玲其他发明人请求不公开姓名
Owner CHINA COAL ELECTRIC CO LTD
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