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http://dx.doi.org/10.9717/kmms.2014.17.10.1205

High-quality Stitching Method of 3D Multiple Dental CT Images  

Park, Seyoon (SK Planet)
Park, Seongjin (ETRI SW Content Research Laboratory)
Lee, Jeongjin (Soongsil University)
Shin, Juneseuk (Sungkyunkwan University)
Shin, Yeong-Gil (Seoul National Univesrity)
Publication Information
Journal of Korea Multimedia Society / v.17, no.10, 2014 , pp. 1205-1212 More about this Journal
Abstract
In this paper, we propose a high-quality stitching method of 3D multiple dental CT images. First, a weighted function is generated using the difference of two distance functions that calculate a distance from the nearest edge of an overlapped region to each position. And a blending ratio propagation function for two gradient vectors is parameterized by the difference and magnitude of gradient vectors that is also applied by the weighted function. When the blending ratio is propagated, an improved region growing scheme is proposed to decide the next position and calculate the blending intensity. The proposed method produces a high-quality stitching image. Our method removes the seam artifact caused by the mean intensity difference between images and vignetting effect. And it removes double edges caused by local misalignment. Experimental results showed that the proposed method produced high-quality stitching images for ten patients. Our stitching method could be usefully applied into the stitching of 3D or 2D multiple images.
Keywords
Image Stitching; 3D Dental CT Image; Image Registration; Image Blending;
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Times Cited By KSCI : 3  (Citation Analysis)
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