Please use this identifier to cite or link to this item: http://rportal.lib.ntnu.edu.tw:80/handle/77345300/36911
Title: Design and Analysis of Filter-based Optical Systems for Spectral Responsivity Estimation of Digital Video Cameras
Authors: 國立臺灣師範大學機電工程學系
Chang, Gao-Wei
Jian, Hong-Da
Yeh, Zong-Mu
Cheng, Chin-Pao
Issue Date: 30-Sep-2003
Publisher: Society of Photo-optical Instrumentation Engineers (SPIE)
Abstract: For estimating spectral responsivities of digital video cameras, a filter-based optical system is designed with sophisticated filter selections, in this paper. The filter consideration in the presence of noise is central to the optical systems design, since the spectral filters primarily prescribe the structure of the perturbed system. A theoretical basis is presented to confirm that sophisticated filter selections can make this system as insensitive to noise as possible. Also, we propose a filter selection method based on the orthogonal-triangular (QR) decomposition with column pivoting (QRCP). To investigate the noise effects, we assess the estimation errors between the actual and estimated spectral responsivities, with the different signal-to-noise ratio (SNR) levels of an eight-bit/channel camera. Simulation results indicate that the proposed method yields satisfactory estimation accuracy. That is, the filter-based optical system with the spectral filters selected from the QRCP-based method is much less sensitive to noise than those with other filters from different selections.
URI: http://rportal.lib.ntnu.edu.tw/handle/77345300/36911
ISSN: 0277-786X
Other Identifiers: ntnulib_tp_E0402_02_020
Appears in Collections:教師著作

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