A modification to the standard Bayer CFA and photodiode structure for CMOS image sensors is proposed, which we call 2PFC, meaning “Two Pixel, Full Color”. The blue and red filters of the Bayer pattern are replaced by magenta filters. Under each magenta filter are two stacked, pinned photodiodes; the diode nearest the surface absorbs mostly blue light and the deeper diode absorbs mostly red ligh...

We propose a modification to the standard Bayer CFA and photodiode structure for CMOS image sensors, which we call 2PFCTM (Two Pixels, Full Color). The blue and red filters of the Bayer pattern are replaced by a magenta filter. Under each magenta filter are two stacked, pinned photodiodes; the diode nearest the surface absorbs mostly blue light and the deeper diode absorbs mostly red light. The...

We introduce a framework to optimize the spatial layout of a spectral filter mask inserted into the aperture of a plenoptic camera. The optimization merit function evaluates end-to-end system performance, including spectral crosstalk at the sensor caused by lens aberrations and diffraction effects. We use the example of a Bayer pattern to illustrate the effects of optimized filter partitions on...

Acid ribonuclease activity of the cortical layer and the subcortical white matter of area parietabis of rabbit brain was measured microchemicably and the distribution of enzyme activity was rebated to the histologic composition. The cytoarchitectonic distribution pattern of acid ribonuclease showed it to be higher in layers HI, IV, V and VI than in layers I and II, and especially high in bayer ...

An improved edge-adaptive color interpolation method for Bayer pattern images of single-sensor digital cameras is proposed in this paper. We derive a more accurate color edge classifier by using both intra-channel and interchannel correlation. In order to reduce the aliasing artifacts, missing channel values are interpolated along the edge direction. Experiment results show that the proposed me...

This paper describes the design of a Bayer filter with smooth hue transition using the System Generator for DSP. We describe and compare experimentally two different designs, one based on a MATLAB implementation and the other based on a modification of the Bayer filter using bilinear interpolation. Keywords—Bayer array, Demosaicing, FPGA, Interpolation.

We report a multilaboratory evaluation of hepatitis C virus (HCV) viral load assays to determine their linear range, reproducibility, subtype detection, and agreement. A panel of HCV RNA samples ranging in nominal concentration from 1.0 to 7.0 log10 IU/ml was constructed by diluting a clinical specimen (genotype 1b). Replicates of the panel were tested in multiple laboratories using the Abbott ...