標題: Magnification Enhanced Multi-Aperture System with Distorted Lens Design
作者: Liu, Yueh-Sheng
Lin, Wei-Ting
Chen, Chun-Ho
Huang, Yi-Pai
光電工程學系
光電工程研究所
Department of Photonics
Institute of EO Enginerring
關鍵字: Image Sensing System;Dual-Camera;Distortion;Optical Zoom
公開日期: 1-Jan-2017
摘要: In recent years, some companies take a dual-camera system to improve the magnification ability and zoomed image's quality in multi-function imaging devices. The solution comprises two apertures to perform a large zooming range without any mechanism moving optical elements: one with a wide-angle lens for lower magnification and the other with a telephoto lens for higher magnification. Nevertheless, this dual-camera system still needs to interpolate the digital zoomed image between the lower and higher magnification images results in a discontinuous quality of zoomed image. We propose a distorted lens (DL) dual-camera system with varying focal length for higher magnification performance and smoother optical zoom. The proposed optical system has a greater pixel count per field angle at the center of sensor than at the periphery of sensor. Therefore, we sacrifice some resolution of the peripheral FOV to enhance the resolution of the center FOV for improving the capability of magnification. For instance, using a 20 MP sensor and displaying a Full HD zoomed image, the maximum magnification factor of 7.54 is achieved in our distorted lens system, but this factor of 3.12 in the distortionless lens system. In other words, we raise the capability of magnification up to 242%.
URI: http://dx.doi.org/10.1117/12.2262326
http://hdl.handle.net/11536/146739
ISBN: 978-1-5106-0920-4
ISSN: 0277-786X
DOI: 10.1117/12.2262326
期刊: IMAGE SENSING TECHNOLOGIES: MATERIALS, DEVICES, SYSTEMS, AND APPLICATIONS IV
Volume: 10209
起始頁: 0
結束頁: 0
Appears in Collections:Conferences Paper


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