An image editing system has been developed that incorporates some intelligent and semi-automated techniques to improve the efficiency of the editing process. Some of the functions provided in the editor operate on the entire image sets instead of individual images. Such functions are capable of accomplishing thresholding operations or operations that remove simple objects from the data set. In order to automate the joint disarticulation process, a special joint trace function is provided. This function automatically traces the joint space in the image from given constraints. Manual editing functions are also provided to enable general editing operations. These techniques, coupled with an efficient user interface, contribute to the improvement of speed of the editing process when applied to real cases.