Agile spectrum imaging: Programmable wavelength modulation for cameras and projectors

作者：Mohan Ankit^*; Raskar Ramesh; Tumblin Jack

来源：Computer Graphics Forum, 2008, 27(2): 709-717.

DOI：10.1111/j.1467-8659.2008.01169.x

We advocate the use of quickly-adjustable, computer-controlled color spectra in photography, lighting and displays. We present an optical relay system that allows mechanical or electronic color spectrum control and use it to modify a conventional camera and projector. We use a diffraction grating to disperse the rays into different colors, and introduce a mask (or LCD/DMD) in the optical path to modulate the spectrum. We analyze the trade-offs and limitations of this design, and demonstrate its use in a camera, projector and light source. We propose applications such as adaptive color primaries, metamer detection, scene contrast enhancement, photographing fluorescent objects, and high dynamic range photography using spectrum modulation.

• 出版日期2008-4
• 单位西北大学