Validation of Image Segmentation and Expert Quality with an Expectation-Maximization Algorithm

Characterizing the performance of image segmentation approaches has been a persistent challenge. Performance analysis is important since segmentation algorithms often have limited accuracy and precision. Interactive drawing of the desired segmentation by domain experts has often been the only acceptable approach, and yet suffers from intra-expert and inter-expert variability. Automated algorithms have been sought in order to remove the variability introduced by experts, but no single methodology for the assessment and validation of such algorithms has yet been widely adopted. The accuracy of segmentations of medical images has been difficult to quantify in the absence of a "ground truth" segmentation for clinical data. Although physical or digital phantoms can help, they have so far been unable to reproduce the full range of imaging and anatomical characteristics observed in clinical data. An attractive alternative is comparison to a collection of segmentations by experts, bu...

• Type: Conference
• Year: 2002
• Where: MICCAI
• Authors: Simon K. Warfield, Kelly H. Zou, William M. Wells III
• Keywords: Expert Segmentations, Image Segmentation Algorithm, Medical Imaging, MICCAI 2002, Segmentation Algorithms