SYSTEMS AND METHODS FOR EXTENDING DYNAMIC RANGE OF IMAGER ARRAYS BY CONTROLLING PIXEL ANALOG GAIN
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United States of America Patent
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Issued Date -
Jun 13, 2013
app pub date -
Feb 6, 2013
filing date -
May 12, 2010
priority date (Note) -
Abandoned
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Abstract
Array cameras and imager arrays configured to capture high dynamic range light field image data and methods of capturing high dynamic range light field image data in accordance with embodiments of the invention are disclosed. Imager arrays in accordance with many embodiments of the invention include multiple focal planes with associated read out and sampling circuitry. The sampling circuitry controls the conversion of the analog image information into digital image data. In certain embodiments, the sampling circuitry includes an Analog Front End (AFE) and an Analog to Digital Converter (ADC). In several embodiments, the AFE is used to apply different amplification gains to analog image information read out from pixels in a given focal plane to provide increased dynamic range to digital image data generated by digitizing the amplified analog image information. The different amplifications gains can be applied in a predetermined manner or on a pixel by pixel basis.
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