A multi-channel wireless remote video real-time transmission adaptive method

Abstract

The invention discloses a multichannel wireless remote video real-time transmission adaptive method, and the method comprises the steps: employing image complexity as the basis of an encoding rate; enabling all channels to calculate the image complexity through respective image gray values; respectively calculating the complexity of a local channel and the proportion of the total image complexity of all channels after the image complexity is obtained, wherein the proportion takes an uplink effective transmission bandwidth as the encoding rate of the local channel. If the proportion is higher, the encoding rate is higher; or else, the encoding rate is lower. A video of each channel employs the encoding rate matched with an image change rate. The channels with abundant encoding rate are used for the encoding rate compensation of the channels with insufficient encoding rate. The method carries out the reasonable adjustment of the encoding rate of all video signal sources, thereby enabling the monitoring of all videos to be more balanced and improving the monitoring effect of all videos.

Description

technical field [0001] The invention relates to a video acquisition and transmission method, in particular to a multi-channel wireless remote video real-time transmission self-adaptation method. Background technique [0002] On-board video equipment has become an important tool for the daily operation of public transport. Real-time video monitoring can be used to monitor the situation in the car intuitively, quickly and in real time, and can effectively supervise and regulate the driver's driving behavior. Video information can be used as an important tool for accident investigation and responsibility clarification , in some cases, supervisors need to monitor the real-time situation on the bus and outside the bus in real time, that is, cameras need to be installed in multiple positions inside / outside the bus to achieve multi-channel video monitoring, but in the case of limited bandwidth, video The data transmission efficiency is limited, and the environment inside and outsid...

AI Technical Summary

Problems solved by technology

[0002] On-board video equipment has become an important tool for the daily operation of public transport. Real-time video monitoring can be used to monitor the situation in the car intuitively, quickly and in real time, and can effectively supervise and regulate the driver's driving behavior. Video information can be used as an important tool for accident investigation and responsibility clarification , in some cases, supervisors need to monitor the real-time situation on the bus and outside the bus in real time, that is, cameras need to be installed in multiple positions inside / outside the bus to achieve multi-channel video monitoring, but in the case of limited bandwidth, video Data transmission efficiency is limited, and the environment inside and outside the car sometimes changes. Real-time monitoring of multi-channel video often encounters stuttering, stuttering, and blurred screens, which greatly affects the monitoring effect.

[0003] The reason for the above problems is that the size and complexity of each frame of the video acquired when the vehicle environment changes is constantly changing, and the environment corresponding to each camera often has different image change rates at the same time, and some environments change greatly. , some are small (for example: the environment inside the vehicle changes relatively little when the passenger’s position does not move or change greatly, but changes greatly when the passenger gets up and walks, similarly, the environment outside the vehicle changes relatively time, the change is not big, and in some cases, the change is relatively large), and at present, all cameras of multi-line wireless remote video use the same fixed bit rate for multi-channel encoding, the bandwidth is constant during transmission, and the image size When the complexity changes greatly, the above-mentioned video transmission problems are inevitable

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