A web-based evaluation system for boundary detection algorithms on medicalimages

Computerized boundary detection algorithms on medical images usually should be evaluated against multiple expert observers' hand-outlined boundaries, which often leads to a tedious and time-consuming data collection. In this paper, we described a web-based system to solve this problem by getting the collection done via the Internet. The registered expert observers can logi n to the server from any places at any time, outline the medical images in a standard image database with the help of computerized outlining tools, th en submit the outlines via the Internet. An evaluation program follows up t o do the actual statistical evaluation using the collected experts' outline s. The system has been tested by deploying a sample application, in which t wo boundary detection algorithms are successfully evaluated against 5 exper t observers on 20 transrectal ultrasound images of the prostate.