An imaging apparatus includes a pixel that generates charge; an integral amplifier that integrates charge transferred from the pixel; a low pass filter to which output of the integral amplifier is supplied and whose time constant is variable; first and second sample-and-hold circuits that sample and hold output of the low pass filter before and after the charge is transferred from the pixel to the integral amplifier, respectively; a differential circuit that outputs a difference between signals held by the first and second sample-and-hold circuits; and a control circuit that changes the time constant. The control circuit decreases the time constant after the sampling by the first sample-and-hold circuit ends, and increases the time constant in the middle of the sampling by the second sample-and-hold circuit.

Various techniques are disclosed for providing object recognition using thermal imaging. Unique thermal features of an object such as a human face can be detected using a thermal imaging module. The thermal imaging module may be included in an authentication system that performs authentication operations for users of a secure system based on the detected thermal features. The thermal features may include a thermal map of a user's face. An object recognition system such as an authentication system may include a non-thermal imaging module that captures non-thermal images of the object. The object recognition system may recognize objects using thermal images and non-thermal images in separate object recognition operations or by combining the thermal and non-thermal images and performing object recognition operations using the combined image. A thermal imaging authentication system may help eliminate user passwords on phones, tablets, computers and/or other secure access systems.

A solid-state imaging device includes a pixel array section that has at least one pixel with a photoelectric conversion unit and a charge detection unit. A driving section is configured to read out a signal of the pixel, a first portion of said signal being based on signal charge, a second portion of said signal being based on a reset potential. A signal processing section is configured to read out the first portion of the signal as a reference voltage, with the reference voltage being adjusted to cause the first and second portions of the signal to be within an input voltage range.

An imaging device, comprising a dark image data imaging section for acquiring first dark image data acquired by shooting in a state where a light beam incident on the imaging surface of the image sensor is shielded, before acquiring first image data that has been read out from the image sensor, and second dark image data acquired by shooting in a state where a light beam incident on the imaging surface of the image sensor is shielded after the second image data that was finally acquired, a corrected image data generating section for generating dark corrected image data by carrying out combination processing based on a comparison result of comparing the first and second dark image data, or an averaging computation result, and a correction section for correcting fixed pattern noise within the cumulatively combined image data using the dark corrected image data.

The present technology relates to a signal processing device, a controlling method, an image sensing device, and an electronic device capable of inhibiting deterioration in image quality of a captured image. The signal processing device of the present technology connects an output of a comparing unit which compares a signal read from a unit pixel with reference voltage to a floating diffusion of the unit pixel, thereby feeding back the output of the comparing unit to the floating diffusion as a reset level, and disconnects the output of the comparing unit from the floating diffusion of the unit pixel, thereby allowing the floating diffusion to maintain the reset level. The present technology may be applied to the image sensing device and the electronic device, for example.

The present disclosure relates to an apparatus and methods for generating a hybrid image by high-dynamic-range counting. In an embodiment, the apparatus includes a processing circuitry configured to acquire an image from a pixelated detector, obtain a sparsity map of the acquired image, the sparsity map indicating low-flux regions of the acquired image and high-flux regions of the acquired image, generate a low-flux image and a high-flux image based on the sparsity map, perform event analysis of the acquired image based on the low-flux image and the high-flux image, the event analysis including detecting, within the low-flux image, incident events by an event counting mode, multiply, by a normalization constant, resulting intensities of the high-flux image and the detected incident events of the low-flux image, and generate the hybrid image by merging the low-flux image and the high-flux image.

In a photoelectric conversion device, groups of unit pixels are arranged in a well, where each of the unit pixels includes photoelectric conversion elements, an amplifier transistor, and transfer transistors. The photoelectric conversion device includes a line used to supply a voltage to the well, a well-contact part used to connect the well-voltage-supply line to the well, and transfer-control lines used to control the transfer transistors. The transfer-control lines are symmetrically arranged with respect to the well-voltage-supply line in respective regions of the unit-pixel groups.

A plurality of pixels PX include effective pixels and optical black pixels. Signal lines VL are provided corresponding to each column of the pixels PX and supplied with output signals of the pixels PX of the corresponding column. Clip transistors CL are provided corresponding to the respective signal lines VL and limit a potential of the corresponding vertical signal lines VL based on a gate potential. At least in a predetermined operating mode, a potential Vclip_dark is supplied to a gate of one of the clip transistors CL corresponding to at least one pixel column formed of the optical black pixels when reading a noise level from the pixels PX corresponding to the clip transistors CL and when reading a data level from the pixels PX corresponding to the clip transistors CL.

A photoelectric conversion element includes a light receiving element, a buffer unit, a current control circuit, and an elimination circuit. The light receiving element generates electrical charge according to an amount of light received. The buffer unit buffers and outputs a voltage signal according to the electrical charge generated by the light receiving element. When the buffer unit outputs the voltage signal, the current control circuit controls electric current flowing through the buffer unit so as to be a predetermined amount of electric current. The elimination circuit eliminates high-frequency components in a band equal to or higher than a predetermined band from the voltage signal output from the buffer unit.

An imaging device according the present disclosure includes a first light receiving element and a plurality of pixel circuits. The plurality of pixel circuits includes an imaging pixel circuit and a first dummy pixel circuit. Each of the plurality of pixel circuits includes an accumulation section, a first transistor, and an output section. The accumulation section is configured to accumulate electric charge. The first transistor includes a first terminal and a second terminal and is configured to couple, by being turned on, the first terminal and the second terminal to each other. The second terminal is coupled to the accumulation section. The output section is configured to output a voltage corresponding to electric charge accumulated in the accumulation section. The first terminal of the first transistor in the imaging pixel circuit is coupled to the first light receiving element. The first terminal of the first transistor in the first dummy pixel circuit is coupled to the second terminal of the first transistor in the first dummy pixel circuit without involving the first transistor of the first dummy pixel circuit.