Image compression method and device

A technology of image compression and compression ratio, which is applied in the field of image processing, can solve the problems of image resolution reduction, image quality degradation, and low image definition, and achieve the effect of ensuring fluency and improving clarity

Inactive Publication Date: 2012-08-22
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the resolution of the image is greatly reduced, the quality of the image will be reduced to a greater extent, which directly and seriously affects the clarity of the image, so there is a problem of low image clarity.

Method used

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  • Image compression method and device
  • Image compression method and device

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] figure 1 It is a schematic diagram of an image compression method according to Embodiment 1 of the present invention, wherein the specific area is described by taking a human face area as an example. As shown in the figure, this embodiment includes an original image 11, an image 12 of recognized face area, a face area 13, a non-specific ar...

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Abstract

The embodiment of the invention relates to an image compression method and an image compression device. The method concretely comprises the following steps that: a network crowding degree of an image transmission network is detected, the available transmission rate for image transmission of the transmission network is calculated according to the network crowding degree, the data quantity threshold of single frame images transmitted by the transmission network is calculated according to the available transmission rate, when the data quantity of the transmitted images is greater than the data quantity threshold of the single frame images, a specific region or a non-specific region in the images is identified, and the specific region and the non-specific regions in the images are compressed according to different compression ratios and are then transmitted. Therefore, the method and the device disclosed by the embodiment of the invention have the advantages that when the data transmission environment is poor, the distinguishing processing on the specific region and the non-specific region of the images is realized, the definition of the specific region of the images received by users is improved, and meanwhile, a certain smoothness degree can also be ensured.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image compression method and device. Background technique [0002] With the development of communication technology and the rapid improvement of network bandwidth, video call technology is becoming more and more mature, and the application of video call will become more and more popular. Especially as the core application of the third-generation mobile communication technology (3rd-generation, 3G) mobile phone, it is receiving extensive attention from all parties, and at the same time, it has accelerated the faster development of video call technology. [0003] During a video call, the smoothness of the video call and the clarity of the video picture are two key indicators for measuring the quality of the video call. Especially when the communication load is heavy, it is very difficult to ensure the smoothness of the video call and to make the image clearer. [0004] In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/24H04N7/14H04N19/00
CPCH04N21/234327H04N7/14H04N19/115H04N19/152H04N19/164H04N19/167H04N19/17H04N19/172H04N21/234345H04N21/64738
Inventor 祁云飞龚铮
Owner HUAWEI DEVICE CO LTD
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