A Novel Approach for Detail-Enhanced Exposure Fusion Using Guided Filter

Figure 7

Analysis of different free parameters used in the algorithm. Maximum quality score and entropy are only observed when 𝜀=0.01, 𝛾=5, and 𝑟=2 (which are set as default parameters). It is observed that VIFF increases as 𝜀, 𝛾, and 𝑟 increases but the larger values are responsible for overenhancement. (a) Effectiveness of 𝜀 on metrics, (b) effectiveness of 𝑟 on metrics, (c) effectiveness of 𝛾 on metrics.

(a)

(b)

(c)