Exposure method, image system and image system cooperative work method

Abstract

The invention relates to the technical field of video processing, and provides an exposure method, which is used for inhibiting the influence of an interference source, and comprises the following steps: a first image sensor sends a trigger signal, and simultaneously triggers the first image sensor and a second image sensor to respectively sample a frame of image; a first image processor in the first image system sends out a frame synchronization signal, and the first image processor and a second image processor in the second image system respectively screen images according to the frame synchronization signal; and a trigger signal and the frame synchronization signal are combined to control the work of the interference source, so that the interference source works in the sampling period of the first image sensor. The method has the advantages that the cost of the solution is low, the change of a hardware system is small, and the quality of the video obtained after the system is upgraded is greatly improved.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to an exposure method, an image system and a method for the image system to work together. Background technique [0002] At present, in public transportation vehicles, a video monitoring system (IMS, Image Monitor System) for recording the situation inside the vehicle is often installed in the vehicle, and is used to provide video evidence when abnormal conditions are found later. Generally speaking, the composition of IMS is as follows figure 1 shown. Wherein, the image sensor often adopts a rolling shutter (Rolling Shutter) sensor. [0003] At the same time, in public transport vehicles, in order to monitor the driver's behavior and prevent his fatigue driving, a driver monitoring system (DMS, Driver Monitor System) is often installed near the driver. In general, the composition of DMS is as follows figure 2 shown. Among them, in order to monitor the detaile...

AI Technical Summary

Problems solved by technology

One method is to use the full visible light sensor in the IMS, so that there will be no infrared interference, but at this time the low-light imaging effect in the car is poor and the picture is not clear enough

The other is to use an RGBIR sensor that is sensitive to RGB three colors and infrared rays in IMS, so that the influence of infrared rays on visible light can be eliminated through the processing of ISP (Image Signal Processor, image processing chip), but due to the release of infrared lights in DMS The energy is too strong, the effect of eliminating infrared influence through ISP processing is poor, and too strong infrared energy also has a great impact on the exposure control of RGBIR sensor

Therefore, the actual effect of the above two schemes is not good.

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