Multi-area Image Fast Automatic Exposure Control Method

According to the imaging of the CCD camera Principle, taking full account of the Earth's atmosphere on the absorption and attenuation of the radiation of the universe, the introduction of a multi-regional image exposure time adjustment factor derived multi-region image exposure time and external light changes in the relationship between the model to solve the shortcomings of the current method; CIS based on the current multi-region exposure time, gain and exposure output value to determine the current multi-region image illumination intensity, set the multi-region image of the rapid automatic exposure control basic parameters, according to the multi-region image of the external light Intensity range look-up table to determine whether the multi-region image exposure intensity value is within the target exposure intensity value, and adjust the automatic exposure time and the brightness gain value of the multi-region image to realize the exposure control. The experimental results show that the proposed method can realize the rapid automatic exposure control of multi-area images, retain the details and the stability is good.