DESPECKLING OF ULTRASOUND IMAGES BASED ON ARTIFICIAL BEE COLONY ALGORITHM BY USING HYBRID MEDIAN FILTER

Image processing usually refers to the digital image processing. Digital image processing is use of the computer algorithms to perform image processing on digital images. As a subcategory of digital signal processing, digital image processing has the many advantages over analogy image processing. It allows a much wider range of the algorithms to be applied to the input data and can avoid problems such as the build-up of noise and signal distortion during processing. Ultrasound images are usually affected with an artefact called speckle. The presence of speckle is undesirable since it degrades image quality. Two-dimensional filters (2D) are used to process two-dimensional digital signals. For image quality determination metrics such as Mean Square Error, Peak Signal-to-noise ratio and Signal-to-noise ratio were used. The performance of the existing method is tested on several clinical ultrasound images such as those obtained liver tissues. The median filter method achieves 24.57(PSNR) and 226.66(MSE) which is higher than other existing method. The hybrid median filter with the ABC algorithm is used to obtain better higher PSNR and lesser MSE, which improve the better quality of image, will be the proposed system.