TY - GEN
T1 - ROI extraction from motion affected MR images by suppression of blurring and motion artifacts in the image background
AU - Weerasinghe, C.
AU - Ji, L.
AU - Yan, H.
PY - 1999
Y1 - 1999
N2 - An algorithm is presented for extraction of the region of interest (ROI) enclosed by the outer boundary of the imaged object. Although there are many algorithms presently available for solving segmentation tasks, they can be easily misled by the ghost artifacts and blurring in the background of the image. Therefore, a two step background-clearing algorithm is proposed in this paper. The first step involves selection of the least motion-affected views, using an entropy minimization criterion for suppression of motion induced blurs. The second step involves cancellation of the remaining ghost artifacts, using a fuzzy model. Both these steps tend to increase the number of dark pixels in the image. The contour extraction is performed using an improved active contour model (snake). The proposed method has been applied to spin echo MR images affected by rotational motion, producing good results. © 1999 IEEE.
AB - An algorithm is presented for extraction of the region of interest (ROI) enclosed by the outer boundary of the imaged object. Although there are many algorithms presently available for solving segmentation tasks, they can be easily misled by the ghost artifacts and blurring in the background of the image. Therefore, a two step background-clearing algorithm is proposed in this paper. The first step involves selection of the least motion-affected views, using an entropy minimization criterion for suppression of motion induced blurs. The second step involves cancellation of the remaining ghost artifacts, using a fuzzy model. Both these steps tend to increase the number of dark pixels in the image. The contour extraction is performed using an improved active contour model (snake). The proposed method has been applied to spin echo MR images affected by rotational motion, producing good results. © 1999 IEEE.
UR - https://www.scopus.com/pages/publications/84874038526
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84874038526&origin=recordpage
U2 - 10.1109/ISSPA.1999.818167
DO - 10.1109/ISSPA.1999.818167
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 1864354518
SN - 9781864354515
VL - 1
SP - 279
EP - 282
BT - ISSPA 1999 - Proceedings of the 5th International Symposium on Signal Processing and Its Applications
PB - IEEE Computer Society
T2 - 5th International Symposium on Signal Processing and Its Applications, ISSPA 1999
Y2 - 22 August 1999 through 25 August 1999
ER -