A digital pixel sensor for correcting and reducing a mismatch between a pixel and an analog digital converter provided. The digital pixel sensor includes a pixel array including a plurality of pixels; and a bank disposed on the pixel array. The bank includes: a plurality of comparators disposed on the plurality of pixels and configured to compare each of a plurality of pixel signals output from the plurality of pixels with a reference signal to output a plurality of comparison result signals; and a counter connected to the plurality of comparators, and configured to receive the plurality of comparison result signals and latch count code based on the plurality of comparison result signals.

[Object] To execute online calibration without using a light source. [Solution] An image sensor includes: a pixel array portion in which a plurality of pixels are disposed and which generates a pixel signal; a reference signal generation unit configured to generate a reference signal for calibration; an analog digital (AD) conversion unit configured to execute AD conversion on the pixel signal and the reference signal to generate pixel data and reference data; and a correction processing unit configured to correct the pixel data on a basis of the reference data. The present technology can be applied to, for example, an image sensor performing online calibration.

Various embodiments disclosed herein describe a divided-aperture infrared spectral imaging (DAISI) system that is adapted to acquire multiple IR images of a scene with a single-shot (also referred to as a snapshot). The plurality of acquired images having different wavelength compositions that are obtained generally simultaneously. The system includes at least two optical channels that are spatially and spectrally different from one another. Each of the at least two optical channels are configured to transfer IR radiation incident on the optical system towards an optical FPA unit comprising at least two detector arrays disposed in the focal plane of two corresponding focusing lenses. The system further comprises at least one temperature reference source or surface that is used to dynamically calibrate the two detector arrays and compensate for a temperature difference between the two detector arrays.

An image sensor has an image sensor array and circuit design employing a method of black level compensation to address image shading related to global exposure image capture and rolling row by row readout schemes. An image sensor including the invented black level compensation pixel array and method may be incorporated within a digital camera.

An image sensor may include adaptive filtering circuitry that is used to correct for row noise. In one example, the image sensor may include a single reference pixel or a column of reference pixels that are shielded from incident light. The adaptive filtering circuitry may estimate row noise based on data from the reference pixel(s). Row noise correction circuitry may then subtract the estimated row noise from imaging pixel outputs to correct for row noise. If the row noise is dominated by supply noise, the reference pixels may be omitted entirely and the adaptive filtering circuitry may estimate row noise based only on the power supply voltage. The adaptive filtering circuitry may undergo a training phase to optimize coefficients for the adaptive filtering circuitry.

Fluorescence imaging with reduced fixed pattern noise is disclosed. A method includes actuating an emitter to emit a plurality of pulses of electromagnetic radiation and sensing reflected electromagnetic radiation resulting from the plurality of pulses of electromagnetic radiation with a pixel array of an image sensor. The method includes reducing fixed pattern noise in an exposure frame by subtracting a reference frame from the exposure frame. The method is such that at least a portion of the plurality of pulses of electromagnetic radiation emitted by the emitter comprises one or more of electromagnetic radiation having a wavelength from about 770 nm to about 790 nm or from about 795 nm to about 815 nm.

The present invention relates to a method for correcting a packaged optical sensor array module, and the method for correcting a packaged optical sensor array module according to the present invention comprises the steps of: analyzing statistical characteristics of an optical sensor array with respect to light emitted from a standard light source having a predetermined characteristic value to extract a representative value, and calculating a first correction value for a measurement value according to the extracted representative value; and calculating a second correction value for a measured value of the optical sensor array that is corrected by the first correction value with respect to light emitted from an applied light source or light emitted by a fluorescence of the applied light source.

A system for obtaining dark current images includes one or more processors and one or more hardware storage devices storing instructions that are executable by the one or more processors to configure the system to perform various acts. The acts include obtaining a first image frame, generating a first low-pass filtered image by applying a low-pass filter to the first image frame, and generating a first estimated dark current image by subtracting the first low-pass filtered image from the first image frame.

A system for obtaining dark current images includes one or more processors and one or more hardware storage devices storing instructions that are executable by the one or more processors to configure the system to perform various acts. The acts include obtaining a first image frame, generating a first low-pass filtered image by applying a low-pass filter to the first image frame, and generating a first estimated dark current image by subtracting the first low-pass filtered image from the first image frame.

A photoelectric conversion device includes a pixel region in which unit pixels each including a photoelectric conversion unit are arranged to form rows and columns, output lines arranged at least two in each column and each connected to the unit pixel of the corresponding column, column circuits provided corresponding to each of the output lines, and a control circuit configured to control connections between the output lines and the column circuits. The control circuit is configured to connect a first output line to a corresponding first column circuit and disconnect a second output line arranged in the same column as the first output line from a corresponding second column circuit when no pixel signal is output to the second output line at a timing when a pixel signal is output to the first output line.