Comparison between Median, Unsharp and Wiener filter and its effect on ultrasound stomach tissue image segmentation for Pyloric Stenosis
Nasrul Humaimi Mahmood, Muhammad Ilhamdi Rusydi, Muhammad Rusydi Muhammad Razif, Mohammad Tajuddin Asm, Nagoor Gany · 2011
Ultrasound is widely used in medical applications. However, the problem in ultrasound image is it contains many speckles, and this make a sonographer hard to interpret the ultrasound image. The idea to solve this problem is by make the pre-processing image before proceed with further image processing techniques. The filter is used to remove the speckles so that the area of the region needed is clearer. After that, the segmentation also can help sonographer to analyze the qualitative and quantitative of ultrasound images. Three types of filter are being use to compare the effect of the filters and choosing the best one to enhance the ultrasound images. Such filters are median filter, wiener filter and unsharp filter. Then, the morphological and segmentation process will enhance the shape of the region of interest. From the final images, the qualitative and quantitative dimensions are measured and presented.