Title :
An automatic 3D surface extraction in ultrasonic images
Author :
Hao, Xiaohui ; Gao, Shangkai ; Gao, Xiaorong ; Xin, Yu ; Zhang, Tanghui
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
fDate :
29 Oct-1 Nov 1998
Abstract :
Presents an automatic 3D surface extraction method for ultrasonic images. In this technique, an image sequence is obtained along one axis of the 3D grid data. Based on the space continuity of the object, the region of interest (ROI) in each frame is determined by using a novel Polygon-based Tracking (PT) method. The edge in the ROI is then automatically extracted by the region growing technique, whose character vector is linearly constructed by the pixel value and the local entropy. Finally, the 3D surface is formed by recombination of the edges in a 2D image sequence. Experiments on water bubble ultrasonic images show that the new method is successful in detection of 3D surfaces
Keywords :
biomedical ultrasonics; entropy; feature extraction; image sequences; medical image processing; vectors; 2D image sequence; 3D grid; 3D surfaces detection; automatic 3D surface extraction; character vector; edges recombination; local entropy; object space continuity; pixel value; polygon-based tracking method; region growing technique; region of interest edge; ultrasonic images; water bubble ultrasonic images; Data mining; Entropy; Image edge detection; Image reconstruction; Image segmentation; Image sequences; Shape; Speckle; Surface reconstruction; Ultrasonic transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.745572
