Zelkova is a comprehensive ISP IP that includes many functionalities for image processing applications. It is optimized for low light environment applications. It consumes low power and has a small gate size. One of the key advantages of ZELKOVA is generating best possible picture quality by implementing optimum low light Noise/Sharp filter on the input image after analyzing each scene. ZELKOVA has significantly low gate size and memory usage, which are achieved by optimizing the algorithm through information sharing of each process.