High dynamic range multispectral imaging using liquid crystal tunable filter

Boneng Tan; Ningfang Liao; Lixun Tian; Jiajia Wang; Yusheng Lianry

doi:10.1117/12.870507

10 November 2010 High dynamic range multispectral imaging using liquid crystal tunable filter

Boneng Tan, Ningfang Liao, Lixun Tian, Jiajia Wang, Yusheng Lianry

Proceedings Volume 7850, Optoelectronic Imaging and Multimedia Technology; 78502A (2010) https://doi.org/10.1117/12.870507
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Using conventional camera to capture natural scenes with high dynamic range generally results in saturation as well as underexposure, because of their limited dynamic range. And moreover, the image of conventional RGB camera with RGB color filter lacks color accuracy. We present a promising solution - a high dynamic range multispectral camera placing a Liquid Crystal Tunable Filter (LCTF) between lens and gray level imaging sensor. For each bands, gray level images with different exposures are acquired separately and are combined into a multispectral high dynamic range image afterwards. The high dynamic range multispectral image has higher color accuracy and greater dynamic range than the images of the traditional RGB camera.

Citation Download Citation

Boneng Tan, Ningfang Liao, Lixun Tian, Jiajia Wang, and Yusheng Lianry "High dynamic range multispectral imaging using liquid crystal tunable filter", Proc. SPIE 7850, Optoelectronic Imaging and Multimedia Technology, 78502A (10 November 2010); https://doi.org/10.1117/12.870507

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