Mritunjay Singh

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Modern Color Filter Array (CFA) designs avoid overlap of lumi-nance and chrominance spectra as it is widely believed to cause irreversible crosstalk. In this paper, we present a simple formulation of the demosaicking problem that disregards spectral overlap-and thus the geometry of the spectra-and instead connects the luminance and chrominance resolutions(More)
We present CFA designs that faithfully capture images with specified luminance and chrominance bandwidths. Previous academic research has mostly been concerned with maximizing PSNR of reconstructed images without specific regard to chrominance bandwidth and cross-talk. Commercial systems, on the other hand, pay close attention to both these parameters as(More)
Chromatic Aberration of lenses is becoming increasingly visible with the rise of sensor resolution, and methods to algorithmically correct it are becoming increasingly common in commercial systems. A popular class of algorithms undo the geometric distortions after demosaicking. Since most demosaickers require high frequency correlation of primary colors to(More)
We show that a recently developed universal demosaicker by the present authors greatly outperforms existing demosaickers when tested with a realistic optical pipeline. We present speed and quality optimizations of this demosaicker for the case of regular pattern color filter arrays. We implement and extensively test optimized versions for several common(More)
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