Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for optimizing image quality during video call

A video image and video call technology, applied in image communication, two-way work system, TV, etc., can solve the problems of unclear video, unclear image, delay, etc., achieve a good chat experience, ensure clarity, and improve quality Effect

Active Publication Date: 2019-06-28
DONGGUAN ELF EDUCATIONAL SOFTWARE CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is still a large difference in the current network speed, some places have no problem with video calls, and some places have difficulty meeting the needs of high-definition video calls
[0003] Video chatting in the case of poor network speed often sacrifices picture quality to ensure real-time performance, or improves picture quality but delays. There are two adaptive modes, but none of them meet user needs. When the network is poor, the picture will not Clarity and delay are not the best choices, especially when the image in the video changes rapidly, the video is basically hard to see clearly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for optimizing image quality during video call
  • Method and system for optimizing image quality during video call
  • Method and system for optimizing image quality during video call

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0063] Embodiment 1: The server reduces the frame rate of the video image according to the difference between the network transmission speed and the preset network speed threshold; the larger the difference, the slower the network transmission speed, and the number of pictures that can be transmitted normally per second The smaller the number, the lower the frame rate; the smaller the difference, the faster the network transmission speed, the more pictures that can be transmitted normally per second, and the higher the frame rate.

Embodiment approach 2

[0064] Embodiment 2: The server reduces the frame rate of the video image according to the ratio of the network transmission speed to the preset network speed threshold. The larger the ratio, the faster the network transmission speed, the more pictures that can be transmitted normally per second, and the larger the frame rate; the smaller the ratio, the slower the network transmission speed, and the number of pictures that can be transmitted normally per second The less, the lower the frame rate.

[0065] The clarity of pictures in a video image mainly includes the clarity of facial expressions, the clarity of human actions, and the clarity of the background. When the camera is facing the scenery, the clarity of pictures in the video image also includes the clarity of the scenery.

[0066] Step S204: Adjust the difference threshold according to the relationship between the network transmission speed and the preset network speed threshold.

[0067] The difference degree thresh...

Embodiment approach 3

[0079] Embodiment 3: the difference degree is the background difference degree, and the difference degree threshold is the background difference degree threshold; the definition is selected from the video image according to the reduced frame rate to be greater than or equal to the definition threshold and the difference A picture with a degree greater than or equal to the difference degree threshold constitutes a key video, specifically: select a picture whose resolution is greater than or equal to the sharpness threshold and the background difference degree is greater than or equal to the background difference degree threshold from the video image according to the reduced frame rate The picture constitutes the key video.

[0080] Further, two or more difference degrees can be selected arbitrarily from expression difference degree, action difference degree, background difference degree and scenery difference degree for comprehensive comparison. The threshold is an expression d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and a system for optimizing image quality during a video call. The method detects the network transmission speed between the sending end and the receiving end by receiving the video image uploaded by the sending end; if the network transmission speed is less than or equal to the preset network speed threshold, the speed of the video image is reduced according to the network transmission speed Frame rate, detecting the sharpness of the picture in the video image; selecting a picture with the sharpness greater than or equal to the sharpness threshold from the video image according to the reduced frame rate to form a key video, and sending the key video to the receiving end key video. When the server detects that the network conditions of the sending end and the receiving end are not good, it screens the video images to be transmitted to the receiving end, and screens out clear pictures to form key video transmissions to the receiving end; it relieves the download pressure on the receiving end and ensures The clarity of the video call improves the quality of the video call, allowing users to have a better chat experience even when the network signal is poor.

Description

technical field [0001] The invention relates to the technical field of video calls, in particular to a method and system for optimizing image quality during video calls. Background technique [0002] At present, with the improvement of wireless network speed, many portable devices are equipped with cameras and can make video calls. Because there is still a big difference in the current network speed, video calls are no problem in some places, and in some places the network speed is difficult to meet the needs of high-definition video calls. [0003] Video chatting in the case of poor network speed often sacrifices picture quality to ensure real-time performance, or improves picture quality but delays. There are two adaptive modes, but none of them meet user needs. When the network is poor, the picture will not Clarity and delay are not the best choices, especially when the image in the video changes rapidly, it is basically impossible to see the video clearly. Contents of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14G06K9/00
CPCH04N7/147G06V40/174
Inventor 郑战海
Owner DONGGUAN ELF EDUCATIONAL SOFTWARE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com