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Figure 6 | BMC Medical Informatics and Decision Making

Figure 6

From: Unified wavelet and gaussian filtering for segmentation of CT images; application in segmentation of bone in pelvic CT images

Figure 6

Sample Result. The original image is in the upper left corner. The image in the upper right corner is the image after cropping it to the region in which bone is found and histogram equalization. In the lower left corner is the image after Speckle Reducing Anisotropic Diffusion (SRAD) filtering. In the lower right corner are results of segmentation. This is an example in which the proposed method fails to provide accurate segmentation results. The segmentation of the bone in the center of the image is very challenging. The bone's texture and gray level is not uniform and the edge is very intricate: the edge of the respective bone is frequently changing direction at sharp angles - these to factors result in poor segmentation.

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