Automatic detection and scoring of the step wedge tool using image processing techniques

Abstract

Step wedge is used for quality control in radiology devices. The image of the step wedge is based on experience, visual threshold, assessment method used and resident status. This project was designed to develop a quality control program, to calculate the number of steps in the image using a computer, digital images process in the evaluation of step wedge and matlab. A number of step wedge images were taken. It was shown to a group of engineers to determine number of the steps in the image. The image was entered into the matlab program and then it was converted to gray scale, then we averaged each column and compared the column values to determine the number of steps.