کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6941165 870156 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Precise Euclidean distance transforms in 3D from voxel coverage representation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
Precise Euclidean distance transforms in 3D from voxel coverage representation
چکیده انگلیسی
Distance transforms (DTs) are, usually, defined on a binary image as a mapping from each background element to the distance between its centre and the centre of the closest object element. However, due to discretization effects, such DTs have limited precision, including reduced rotational and translational invariance. We show in this paper that a significant improvement in performance of Euclidean DTs can be achieved if voxel coverage values are utilized and the position of an object boundary is estimated with sub-voxel precision. We propose two algorithms of linear time complexity for estimating Euclidean DT with sub-voxel precision. The evaluation confirms that both algorithms provide 4-14 times increased accuracy compared to what is achievable from a binary object representation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pattern Recognition Letters - Volume 65, 1 November 2015, Pages 184-191
نویسندگان
, , ,