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has been cited by the following article:

• TITLE: A Simple Model for On-Sensor Phase-Detection Autofocusing Algorithm

  AUTHORS: Przemysław Śliwiński, Paweł Wachel

  KEYWORDS: Phase Detection Autofocus; On-Sensor Circuit; Formal Model; Cross-Correlation; Stochastic Approximation

  JOURNAL NAME: Journal of Computer and Communications, Vol.1 No.6, November 26, 2013

  ABSTRACT: A simple model of the phase-detection autofocus device based on the partially masked sensor pixels is described. The cross-correlation function of the half-images registered by the masked pixels is proposed as a focus function. It is shown that—in such setting—focusing is equivalent to searching of the cross-correlation function maximum. Application of stochastic approximation algorithms to unimodal and non-unimodal focus functions is shortly discussed.