Night image rapid enhancement method

The invention relates to the technical field of image enhancement, and particularly discloses a night image rapid enhancement method, which comprises the following steps: acquiring an original image shot by a camera device, performing edge contour detection on the original image, and then converting the original image from an RGB color space to an HSV color space; the MSR algorithm is improved by adopting box type filtering, and the original brightness component is processed through the improved MSR algorithm to obtain a reflection image; adjusting the brightness component of the reflection image through a preset brightness adjusting mode; processing an original brightness component through gamma transformation, and then carrying out adaptive weighted fusion on the processed original brightness component and the adjusted reflection image; and fusing the brightness component of the image after adaptive weighted fusion with an edge contour detection result, then merging the fused new brightness image with the c