A study of wavelets combined, if desired, with other methods for use in edge sharpening of ultrasound images

2003

Masteroppgave i informasjons- og kommunikasjonsteknologi 2003 - Høgskolen i Agder, Grimstad The increased use of laparoscopic surgery has resulted in a growing interest in use of ultrasounds. Ultrasounds do not have any known side effects, and it provides the surgeon with real-time imaging. In spite of its advantages, ultrasounds also have some disadvantages. The most obvious is that ultrasound images contain much noise. Another problem is that edges of vital organs may appear diffuse. In this thesis we will look at ways of sharpening edges by using a relatively new mathematical method called wavelet. With wavelets we analyse signals according to scale. This idea started with Fourier in the…