Fig. 1. Flow chart of HDR image generated by proposed method

Fig. 2. Partition process of image. (a) Original image; (b) histogram of luminance distribution in original image; (c) histogram of luminance accumulated probability; (d) partition result of luminance grade in original image

Fig. 3. Generation process of HDR image from LDR image of Wreath Building. (a) Original image; (b) partition result of luminance grade in original image; (c) Gamma transform result with γ1=0.7494; (d) Gamma transform result with γ2=1.0000; (e) Gamma transform result with γ3=1.8694; (f) Gamma transform result with γ4=3.1372; (g) HDR image fused by (c), (d), (e) and (f)

Fig. 4. Comparison of HDR images generated by PMET and proposed method with original images. (a) Original images; (b) PMET method; (c) proposed method

Table 1. Information entropy of HDR images generated by two methodsbit

Table 2. Average gradient of HDR images generated by two methods

Table 3. Chromatic aberration of HDR images generated by two methods with original images

Table 4. Time consumption to generate HDR images from seven test LDR images by two methodss