Algorithm 2 Multiple Input-Parallel Processing

Read input image I(x, y) Compute the histogram h(s), s = 0, …., 255 for I(x, y) for t = 1: 255 do i ≠ j (see Figure 3) Compute MCET’s objective function n(t) in Equation (4) base on the following inputs: Compute ${\mu }_1$(t) and ${\mu }_2$(t) using the heterogeneous inputs 1, 2, 3 … 32 (see Table 2) Compute t1*, t2*, … t32* that minimize n(t) for each heterogeneous inputs. End for. Compute the average sum of the performance measure for each t*. Find the best t* which maximize the performance measure. Return the best t* Output image g(x, y).