Fig. 1. Flow diagram of image background blurring based on color constancy

Fig. 2. Image comparison. (a) Original image; (b) image after color constancy processing

Fig. 3. Comparison of two estimation depth maps. (a) t_c; (b) t_v

Fig. 4. Image processed by soft matting algorithm.(a)Processing of Fig. 3(a1); (b) processing of Fig.3(a2); (c) processing of Fig.3(a3); (d) processing of Fig.3(a4)

Fig. 5. Foreground and background of the image.(a) Foreground image; ( b) background image

Fig. 6. Pixel change map after Gaussian filtering

Fig. 7. Contrast image before and after image background blurring processing. (a) Before blurring processing; (b) after blurring processing