公开(公告)号：US08787620B2

公开(公告)日：2014-07-22

申请号：US13955029

申请日：2013-07-31

Applicant: Koninklijke Philips N.V.

Inventor： Thomas Laurence ,  Sharon X. Wang ,  Jerome J. Griesmer ,  Thomas Blaffert ,  Zhiqiang Hu ,  Steffen Renisch

IPC: G06K9/00 ,  G01V5/12

CPC classification number: G06K9/78 ,  G01T1/1647

Abstract: A nuclear imaging system includes a crystal identification system which receives a flood image which includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. A crystal identification processor partitions the flood image into a plurality of candidate regions with a watershed segmentator implementing a watershed algorithm. The candidate regions are linked in an adjacency graph, and then classified as background or relevant, where relevant regions contain a peak within the watershed lines. The regions are then assigned to a crystal according to an objective function and an assignability score. A calibration processor maps the peaks to a rectangular grid.

Abstract translation: 核成像系统包括晶体识别系统，其接收包括多个峰的泛洪图像，每个峰响应于由相应的闪烁体晶体检测的辐射。 晶体识别处理器利用分水岭分割器来实现分水岭算法将洪水图像划分成多个候选区域。 候选区域以邻接图形方式链接，然后分类为背景或相关，其中相关区域在流域线内包含峰值。 然后根据目标函数和可分配性得分将这些区域分配给晶体。 校准处理器将峰值映射到矩形网格。