Algorithm for Searching for Optimal Values of Parameters of Singular Point Detectors Based on Local Image Characteristics

IF 0.5 Q4 PHYSICS, MULTIDISCIPLINARY Optoelectronics Instrumentation and Data Processing Pub Date : 2024-03-08 DOI:10.3103/s8756699023050059

A. V. Likhachev

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Abstract

A method is proposed that allows one to determine the optimal values of the parameters of singular point detectors \(\mathbf{p}\) from the local characteristics of the image \({\mu}\). The method is based on searching for the extremum of the analytical dependence \(\delta=P(\mathbf{p},{\mu})\), where \(\delta\) is the detector efficiency criterion defined as the weighted sum of the type I error and type II error. The dependence \(P(\mathbf{p},{\mu})\) interpolates the set \(\delta(\mathbf{p}_{i},{\mu}_{j})\) obtained from a sample from a set of images of the same type. An experiment was performed with 40 radiographs of the lower part of the human spine, which were processed by the Harris–Stephens detector and SUSAN detector. It is found that when choosing the adjustable parameters of the detector using the proposed method, the \(\delta\) criterion turned out to be significantly lower than for the values of these parameters at the boundaries of the recommended intervals.

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基于本地图像特征的奇异点检测器参数最佳值搜索算法

摘要本文提出了一种方法，可以从图像的局部特征（{\mu}\）中确定奇异点检测器参数的最佳值。该方法基于搜索分析依赖关系的极值（\(\delta=P(\mathbf{p},{\mu})\），其中\(\delta\)是检测器效率标准，定义为I类错误和II类错误的加权和。P(\mathbf{p},{/\mu})\)的依存关系是从一组同类型图像的样本中插值得到的集合\(\delta(\mathbf{p}_{i},{/\mu}_{j})\)。实验中使用了 40 张人体脊柱下部的射线照片，并通过 Harris-Stephens 检测器和 SUSAN 检测器进行了处理。实验发现，当使用建议的方法选择探测器的可调参数时，\(\delta\)标准明显低于这些参数在建议区间边界的值。

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来源期刊

Optoelectronics Instrumentation and Data Processing PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

50.00%

发文量

期刊介绍： The scope of Optoelectronics, Instrumentation and Data Processing encompasses, but is not restricted to, the following areas: analysis and synthesis of signals and images; artificial intelligence methods; automated measurement systems; physicotechnical foundations of micro- and optoelectronics; optical information technologies; systems and components; modelling in physicotechnical research; laser physics applications; computer networks and data transmission systems. The journal publishes original papers, reviews, and short communications in order to provide the widest possible coverage of latest research and development in its chosen field.