Edge enhancement of medical ultrasonic images based on similarity

To improve edge detection level of medical ultrasonic images,a weighted contrast enhancement method of medical ultrasound images based on similarity estimation is proposed.Firstly the similarity of the processing window around a pixel and matching template is calculated.According to the relationship between the similarity and each parts of ultrasound image,the matched images are enhanced by local enhancement approach when it satisfied with correlation condition.The weighted average method for multiple images is used to obtain the final enhancement results.Experimental results with this method shows better contrast resolution,better edge feature detection than the original,and also preserved the structure without losing useful clinical information.In this respect,this method remedies the shortage of traditional enhancement algorithms.