Invisage Technologies, Inc.

Verily Life Sciences LLC

Invisage Inc.

Aurelien Philippe Bouvier

Emanuele Mandelli

Dario Clocchiatti

Nishant Verma

Zachary Michael Beiley

Ralph Beaudouin

Lionel Barrymore Joseph Barrow

James Polans

Endoscopic systems, non-transitory, machine-readable storage media, and methods for correcting brightness non-uniformity are described. In an embodiment, the endoscopic system includes a light source positioned to emit illumination light onto a scene; a photodetector positioned to receive illumination light reflected off of the scene and configured to generate a scene signal based on the received illumination light; a display; and a controller operatively coupled to the light source, the photodetector, and the display. In an embodiment, the controller including logic that, when executed by the controller, causes the endoscopic system to perform operations including: illuminating the scene with the light source; detecting a scene depth; estimating a scene-specific brightness non-uniformity correction based on the detected scene depth and an endoscopic system brightness non-uniformity profile; and displaying an image of the scene with the display based on the scene signal, the detected scene depth, and the endoscopic system brightness non-uniformity correction.

Adaptive brightness non-uniformity correction in endoscope visualization

An imaging system and method for imaging a scene using a rolling shutter are described. In an embodiment, the method includes illuminating a scene with first and second illumination light; generating frame signals with a photodetector comprising a plurality of pixels arranged in a plurality of rows, wherein the frame signals are based on light received from the scene with sequentially integrated rows of pixels of the plurality of rows, and wherein a frame signal includes signals from pixels of each of the plurality of rows; and generating images of the scene based on an intensity of the frame signals and the proportion of the first illumination light and the second illumination light emitted onto the scene during the first and second frames, wherein a proportion of the first illumination light and the second illumination light in a first frame is different than in a second frame.

Pulsed light imaging using rolling shutter image sensors

In various embodiments, image sensors and methods of operating the image sensors are disclosed. In an example embodiment, a pixel circuit having a first electrode is coupled to a reset transistor and to a first region of an optically sensitive layer, and a second electrode is coupled to a pixel sense node and to a second region of an optically sensitive layer. The electrical path from the first electrode, through the optically sensitive layer, and into the second electrode functions as a variable resistor. Other devices and methods of operating the devices are disclosed.

Image sensors with noise reduction

In various embodiments, methods and related apparatuses for sealing down pixel sizes in quantum film-based image sensors are disclosed. In one embodiment, an image sensor circuit is disclosed that includes circuit includes an optically sensitive layer, a first pixel having a first electrode coupled to a first region of optically sensitive layer, a second pixel having a second electrode coupled to a second region of optically sensitive layer, and a readout circuit having at least one transistor that is shared among the first pixel and the second pixel. In a first time interval, the transistor is used in a readout of a signal related to illumination of the first pixel over an integration period. During a second time interval, the transistor is used in a readout of a signal related to illumination of the second pixel over an integration pixel. The signals thusly read constitute a time-domain multiplexed (TDM) signal.

Scaling down pixel sizes in image sensors

In various embodiments, methods and related apparatuses for scaling down pixel sizes in quantum film-based image sensors are disclosed. In one embodiment, an image sensor circuit is disclosed that includes circuit includes an optically sensitive layer, a first pixel having a first electrode coupled to a first region of optically sensitive layer, a second pixel having a second electrode coupled to a second region of optically sensitive layer, and a readout circuit having at least one transistor that is shared among the first pixel and the second pixel. In a first time interval, the transistor is used in a readout of a signal related to illumination of the first pixel over an integration period. During a second time interval, the transistor is used in a readout of a signal related to illumination of the second pixel over an integration pixel. The signals thusly read constitute a time-domain multiplexed (TDM) signal.

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Woodside, CA, United States of America

Aurelien Philippe Bouvier