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A Simulation Study on the Fast Gradient-based Peak Searching Method  

Ahn, Jung-Ho (강남대학교 컴퓨터미디어정보공학부)
Publication Information
Journal of Digital Contents Society / v.11, no.1, 2010 , pp. 39-45 More about this Journal
Abstract
In this paper we propose a new fast peak searching method using the gradient and present simulation results. The proposed method is a solution to the problem that finds the peak(maximum) of the unimodal function on a finite interval with minimum searching steps. Its main application is the auto-focus in the mobile phone. We propose the three steps to find the peak; periodic search, gradient-based search and detail search. In simulation we generated the Gaussian functions with white noise and have the result of about 8 searching steps and 1.04 errors on average.
Keywords
정상점 탐색;모드;주기적 탐색;기울기 탐색;상세 탐색;
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