Segmentation of a real T-shaped image with intensity inhomogeneity by CV model.

<p>(a), (c) The original image with red initial contours. (b), (d) Segmentation results of the CV model.</p

JS, DSC, RFP and RFN values for the results in the second row of Fig. 2 and Fig. 4.

<p>JS, DSC, RFP and RFN values for the results in the second row of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0120399#pone.0120399.g002" target="_blank">Fig. 2</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0120399#pone.0120399.g004" target="_blank">Fig. 4</a>.</p

Comparisons of Li’s model, LSACM and our model for two synthesize images multiplied by given bias fields.

<p>Column 1 is the original images (row 1, 4), given bias fields (row 2, 5) and the initial contours in the images multiplied by bias fields (row 3, 6). Column 2 to 4 is the segmentation results, estimated bias fields and corrected images, respectively. Row 1 and 4 are the results of Li’s model. Row 2 and 5 are the results of LSACM. Row 3 and 6 are the results of our model.</p

Comparisons of Li’s model, LSACM and our model for MR brain image.

<p>Column 1 is the original image with red and blue initial contours. Column 2 to 4 is the final segmentation results, the corrected images and the estimated bias field images, respectively. Row 1 to 3 is the results of Li’s model, LSACM and our model, respectively.</p

Comparisons of the segmentation results for a MR brain image contains tumor with intensity inhomogeneity between Li’s model and our model.

<p>(a), (d) The original image with initial contours. (b), (e) The results of Li’s model. (c), (f) The results of our model.</p

Comparisons of the segmentation results for a synthetic image with intensity inhomogeneity between Li’s model, LSACM and our model.

<p>(a), (e) The original image with red initial contours. (b), (f) The results of Li’s model. (c), (g) The results of LSACM. (d), (h) The results of our model.</p

Comparisons of the bias field estimation and corrected image for Fig. 6 between Li’s model, LSACM and our model.

<p>(a), (b), (c) The estimated bias fields of Li’s model, LSACM and our model, respectively. (d), (e), (f) The corrected images of Li’s model, LSACM and our model, respectively.</p

Segmentation of Li’s model.

<p>(a), (d) The original image with red initial contours. (b), (e) The final segmentation results of Li’s model. (c), (f) The bias field estimation of Li’s model.</p

Comparisons of Li’s model and our model in different scale <i>σ</i> on MR image.

<p>Row 1 is the original image with red initial contours. The first column is the final segmentation results. The second column is the estimated bias field images. The third column is the corrected images. Row 2 and 3 are the corresponding results of Li’s model in <i>σ</i> = 3 and <i>σ</i> = 10. Row 4 and 5 are the final results of our model in <i>σ</i> = 3 and <i>σ</i> = 10 respectively.</p

Experimental results of our model.

<p>(a), (e) The original image with red initial contours. (b), (f) The final segmentation results of our model. (c), (g) The estimation of the bias field. (d), (h) The corrected image. (i) The histogram of the original image. (j) The histogram of the corrected image with initial contour (a). (k) The histogram of the corrected image with initial contour (e).</p