Novel real-time automatic dimming method and imaging equipment

The invention relates to a novel real-time automatic dimming method and imaging equipment. The method comprises the following steps: acquiring an image of a current scene acquired by an image sensor in real time; calculating the contrast of the image based on an eight-neighbor calculation method; judging whether the contrast of the image meets the evaluation standard of good exposure of the image, if so, re-acquiring the image acquired by the image sensor in real time, otherwise, calculating the average gray value of the image, and judging the dimming direction of the diaphragm according to the average gray value; and driving the diaphragm to adjust according to the dimming direction. Whether the dimming system is located at the optimal exposure position or not is judged according to the image contrast, the adjusting direction of the dimming system is judged according to the average gray value of the image, the problems that dimming fails and the optimal exposure position cannot be adjusted due to misjudgment