Ratsnake: A Versatile Image Annotation Tool with Application to Computer-Aided Diagnosis
Figure 2
Example of segmentation and annotation of the pathogenic kidney biopsy image illustrated in Figure 1(b) using Ratsnake. (a) Pathogenic glomerulus region of Figure 1(b). (b) Quick rough freehand initial user annotation. (c) Polygon user annotation with landmarks automatically derived from the freehand annotation. (d) . (e) defined by (2). (f) Segmented ROI using (2) with and image-specific snake parameters. However, such an image-specific approach would not be suitable for a CAD system capable of coping with annotation of any images of this kind.
