Enhancement of dark images using dynamic stochastic resonance in combined DWT and DCT domain

Images clicked in night or dark area need enhancement to visualize the objects clearly. Now-a-days this problem is widely emerged out in various application domains. The proposed technique for the dark image enhancement is based on the combination of Discrete Wavelet Transform (DWT) and Discrete Cosine Transform (DCT) using Dynamic Stochastic Resonance (DSR). The proposed new technique compensates the drawbacks of each transformation and uses the advantages instead. The paper shows the proposed technique is performing best and is compared with various existing techniques. With the help of the optimum values of the parametric metrics the paper shows the efficiency and adaptivity of the proposed technique.