10 February 2006 Optical interaction of space and wavelength in high-resolution digital imagers
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Precise simulation of digital camera architectures requires an accurate description of how the radiance image is transformed by optics and sampled by the image sensor array. Both for diffraction-limited imaging and for all practical lenses, the width of the optical-point-spread function differs at each wavelength. These differences are relatively small compared to coarse pixel sizes (6μm-8μm). But as pixel size decreases, to say 1.5μm-3μm, wavelength-dependent point-spread functions have a significant impact on the sensor response. We provide a theoretical treatment of how the interaction of spatial and wavelength properties influences the response of high-resolution color imagers. We then describe a model of these factors and an experimental evaluation of the model's computational accuracy.
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Brian Rodricks, Brian Rodricks, Kartik Venkataraman, Kartik Venkataraman, Peter Catrysse, Peter Catrysse, Brian Wandell, Brian Wandell, } "Optical interaction of space and wavelength in high-resolution digital imagers", Proc. SPIE 6069, Digital Photography II, 606904 (10 February 2006); doi: 10.1117/12.650729; https://doi.org/10.1117/12.650729

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