earticle

영어

Digital image processing is used widely and in various fields, and noise occurs for various external reasons such as channel transmission error. Generally, mixed noise is the mixture of salt and pepper noise and Gaussian noise, and the existing methods have insufficient noise removal features due to the limitation of filters. So this paper proposed an algorithm to use noise density of a local mask in order to remove mixed noise effectively. The simulation results showed the proposed algorithm had greater noise removal functions and energy conservation features compared to existing methods.