A New Block Truncation Coding (nbtc) for Satellite Image Retrieval Using Dot-diffusion Technique

Presently there are issues related to retrieval of satellite images from huge database wherein the data goes on mushrooming day by day .The low bit rate configuration are causing problems such as noise, inherent artefact .Therefore to overcome these issues a new block truncation coding using dot diffusion technique is proposed in this paper. The dot diffusion technique has the characteristic of parallelism in order to enhance the processing efficiency. Here to retrieve the best quality image the class and diffused matrix is used of size 16 × 16 . On studying and comparing the results with Block truncation coding technique using error –diffusion and the proposed new block truncation coding using dot diffusion the results show that the proposed system gives excellent image quality ,high performance . It also satisfies one of the vital the processing efficiency attribute.