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公开(公告)号：US20180070020A1
公开(公告)日：2018-03-08
申请号：US15693295
申请日：2017-08-31
发明人： Jeroen ROTTE , Rik VISSER
摘要： An image processor is provided for correcting brightness of saturated pixels of a captured image. The image processor can include a pixel saturation determiner that whether one or more pixels in an image sensor have been saturated by comparing pixel brightness levels of the pixels to a predetermined saturation threshold. Moreover, the image processor includes an image enhancer that generates a corrected image without artifacts due to the saturated pixel(s) by replacing the pixel brightness of the saturated pixel(s) with a pixel correction value that is based on a pixel brightness of one or more unsaturated pixel in the image sensor.
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公开(公告)号：US20180070032A1
公开(公告)日：2018-03-08
申请号：US15693034
申请日：2017-08-31
摘要： A system and method is provided for performing high dynamic range digital double sampling. More particularly, a CMOS image sensor is provided that includes a pixel array with each pixel sampling both dark and bright values for digital double sampling. After the sampled signals are digitized, a mean dark value is determined and each dark value is further fed to a lookup table that generates an output value taking into account whether the pixel has been saturated. In over exposed conditions, the lookup table will generate a negative value output to eliminate image artifacts. All three values are fed to adder logic circuit that subtracts the mean dark value and the lookup table output from the bright value. This resulting output is fed to a video viewer.
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公开(公告)号：US20200162678A1
公开(公告)日：2020-05-21
申请号：US16752124
申请日：2020-01-24
发明人： Jeroen ROTTE , Rik VISSER
摘要： An image processor is provided for correcting brightness of saturated pixels of a captured image. The image processor can include a pixel saturation determiner that whether one or more pixels in an image sensor have been saturated by comparing pixel brightness levels of the pixels to a predetermined saturation threshold. Moreover, the image processor includes an image enhancer that generates a corrected image without artifacts due to the saturated pixel(s) by replacing the pixel brightness of the saturated pixel(s) with a pixel correction value that is based on a pixel brightness of one or more unsaturated pixel in the image sensor.
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公开(公告)号：US20200014866A1
公开(公告)日：2020-01-09
申请号：US16571660
申请日：2019-09-16
摘要： A system and method is provided for performing high dynamic range digital double sampling. More particularly, a CMOS image sensor is provided that includes a pixel array with each pixel sampling both dark and bright values for digital double sampling. After the sampled signals are digitized, a mean dark value is determined and each dark value is further fed to a lookup table that generates an output value taking into account whether the pixel has been saturated. In over exposed conditions, the lookup table will generate a negative value output to eliminate image artifacts. All three values are fed to adder logic circuit that subtracts the mean dark value and the lookup table output from the bright value. This resulting output is fed to a video viewer.
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公开(公告)号：US20200374473A1
公开(公告)日：2020-11-26
申请号：US16992492
申请日：2020-08-13
摘要： A system and method is provided for performing high dynamic range digital double sampling. More particularly, a CMOS image sensor is provided that includes a pixel array with each pixel sampling both dark and bright values for digital double sampling. After the sampled signals are digitized, a mean dark value is determined and each dark value is further fed to a lookup table that generates an output value taking into account whether the pixel has been saturated. In over exposed conditions, the lookup table will generate a negative value output to eliminate image artifacts. All three values are fed to adder logic circuit that subtracts the mean dark value and the lookup table output from the bright value. This resulting output is fed to a video viewer.
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公开(公告)号：US20200162684A1
公开(公告)日：2020-05-21
申请号：US16751020
申请日：2020-01-23
摘要： An imaging system is provided that includes a pixel array having a plurality of columns with rows of pixels and with each pixel having a plurality of photodiodes and a common readout circuit that stores respective accumulation voltages from each of the plurality of photodiodes. Moreover, the system includes row driver circuitry that control the pixel array for pixel addressing and readout, such that the respective accumulation voltages of the photodiodes is read out on a readout channel coupled to a bit line column, and a hybrid multiplexer that multiplexes and routes output signals from the pixel array to a video imaging device to be displayed thereon.
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公开(公告)号：US20200162683A1
公开(公告)日：2020-05-21
申请号：US16750602
申请日：2020-01-23
摘要： An imager that includes a pixel array with a plurality of columns having rows of pixels and with each pixel having a plurality of photodiodes and a common readout circuit that stores respective accumulation voltages from each of the plurality of photodiodes. The imager further includes row driver circuitry that controls the pixel array for pixel addressing and readout, with the row driver circuitry including a plurality of shift registers, and an image sensor controller that controls the plurality of shift registers to address the rows of pixels in the pixel array. Moreover, the row driver circuitry dynamically upward and downward shifts control signals to the pixel array, such that two rows of pixels in a single column of the pixel array are addressed during a single row time.
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