Fig. 1. Schematic diagram of fused HDR image of high-brightness image and low-brightness image

Fig. 2. Algorithm flow chart for judging pixel exposure

Fig. 3. Fusion algorithm flow chart of three exposure situations

Fig. 4. Pixel ratio factor curves for baseline and test image sets of three sets of images

Fig. 5. Fusion results of three groups of image under different size windows

Fig. 6. Fusion results of two sets of images with and without Gaussian noise

Fig. 7. Comparison of three sets of image fusion results