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A wifi-based image transmission method and system

A transmission method and image technology, applied in image communication, closed-circuit television system, selective content distribution, etc., can solve the problems of low network transmission rate and image display freeze, and achieve the effect of improving reliability and efficiency

Active Publication Date: 2021-01-19
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0002] With the development of network technology, services such as home security monitoring and online live broadcasting have occupied a huge proportion in people's daily life, and each monitoring product needs to have a corresponding PC or mobile terminal. When the network transmission rate is stable or the network transmission rate is low, it often causes serious image display freezes, which puts forward great requirements on the way of wireless image transmission; under the premise of high concurrency, large data volume and low fault tolerance, how to improve The efficiency of wireless image transmission, how to ensure the reliability of wireless image transmission is a major challenge for wireless image transmission technology

Method used

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  • A wifi-based image transmission method and system

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0034] Such as Figure 1~2 Shown, a kind of image transmission method based on WIFI, comprises the following steps:

[0035] S1, the control module enters the working mode, the WIFI connection module starts to operate, and is connected to an effective wireless network.

[0036] S2, after confirming that the network connection status is normal, the image acquisition module starts to operate, acquires image data in real time, and compresses the image data;

[0037] S2.1, confirm that the network connection status is normal, and start the camera of the image acquisition module;

[0038] S2.2, set the camera mode, adjust the brightness, contrast and saturation of the image;

[0039] S2.3, compressing image data into jpeg format, so as to improve transmission efficiency. ...

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Abstract

The invention discloses an image transmission method based on WIFI, and the method comprises the following steps: S1, enabling a control module to enter a working mode, enabling a WIFI connection module to start to operate, and enabling the WIFI connection module to be connected to an effective wireless network; S2, after it is confirmed that the network connection state is normal, enabling an image collection module to start to operate, obtaining image data in real time, and compressing the image data; S3, enabling the central processing unit of the control module to issue an instruction to the DMA controller of the DMA transmission module, so that the DMA controller carries the image data collected by the camera of the image collection module into a memory; data are transmitted through the DMA controller, the CPU time is not occupied, and the image transmission efficiency is improved; the reliability of image transmission is improved by judging a network connection state, a DMA transmission state and an image sending buffer area state; and the image data is verified, so that the reliability of image transmission is further improved.

Description

technical field [0001] The invention relates to the technical field of embedded system design and application, in particular to a WIFI-based image transmission method and system. Background technique [0002] With the development of network technology, services such as home security monitoring and online live broadcasting have taken up a huge proportion in people's daily life, and each monitoring product needs a corresponding PC or mobile terminal. When the network transmission rate is stable or the network transmission rate is low, it often causes serious image display freezes, which puts forward great requirements on the way of wireless image transmission; under the premise of high concurrency, large data volume and low fault tolerance, how to improve The efficiency of wireless image transmission and how to ensure the reliability of wireless image transmission is a major challenge for wireless image transmission technology. Contents of the invention [0003] The purpose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/00H04N7/18H04N21/4363
CPCH04N1/00103H04N7/18H04N21/43637
Inventor 谢光强李国延叶志活李杨郑臣河
Owner GUANGDONG UNIV OF TECH
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