Google Inc.

Other

Apple Inc.

Edward T Chang

Jason Rupert Redgrave

Donald C Stark

Albert Meixner

Richard Lawrence Baer

Paul M Hubel

Ofer Shacham

Daniel Finchelstein

Scott Thomas Smith

Qiuling Zhu

William R Mark

David Patterson

Jonathan James Taylor

Neeti Desai

Mykhaylo Kurinnyy

Damien J Thivent

Zhaowei Wang

Daniel Frederic Finchelstein

Mykhaylo Kurinny

This document describes techniques and systems that enable autocalibration for multiple cameras using near-infrared (NIR) illuminators. The techniques and systems include a user device that uses NIR images, including dot images and flood images, captured by the multiple cameras. The user device implements an autocalibration module that normalizes the contrast of each image. Then, the autocalibration module detects dot features in the dot images and detects flood features in the flood images. The autocalibration module uses the flood features to disambiguate the dot features in the dot images. Then, the autocalibration module uses the disambiguated dot features to determine new calibration parameters for recalibration of the multiple cameras. In some aspects, the autocalibration module uses the dot images, rather than the flood images, to detect the flood features for disambiguating the dot features.

Autocalibration for multiple cameras using near-infrared illuminators

An apparatus is described. The apparatus includes an image processing unit. The image processing unit includes a network. The image processing unit includes a plurality of stencil processor circuits each comprising an array of execution unit lanes coupled to a two-dimensional shift register array structure to simultaneously process multiple overlapping stencils through execution of program code. The image processing unit includes a plurality of sheet generators respectively coupled between the plurality of stencil processors and the network. The sheet generators are to parse input line groups of image data into input sheets of image data for processing by the stencil processors, and, to form output line groups of image data from output sheets of image data received from the stencil processors. The image processing unit includes a plurality of line buffer units coupled to the network to pass line groups in a direction from producing stencil processors to consuming stencil processors to implement an overall program flow.

Architecture for high performance, power efficient, programmable image processing

The color response of camera devices may be calibrated, using a correction factor that can account for differences in the spectra of light emitted by different light sources used during calibration. The correction factor may be calculated based on the expected spectral sensitivities of the camera devices, the power spectrum of an actual light source, and the power spectrum of a canonical light source. The correction factor is then applied to adjust a measured color response of a given camera device, so that the adjusted color response is effectively the response of the given camera device if it had been illuminated by the canonical light source. In this manner, any measured color response differences, which may be due to differences between the actual light source used and the canonical light source, can be effectively reduced (if not essentially eliminated.) Other embodiments are also described and claimed.

Correction factor for color response calibration

A portable urinal apparatus includes a supporter attached to the top of a catch basin and a discharge tube attached to the bottom of the catch basin, in which the catch basin is constructed so as to catch urinary fluids and direct those fluids down through the discharge tube into the toilet bowl of a conventional sit down toilet. An interior chamber is defined by the walls of the catch basin. The sides of the catch basin are sloped to direct fluids towards the middle and bottom of the interior chamber of the catch basin, rather than outside the basin. The bottom of the catch basin is sloped to direct fluids towards the discharge tube. When in use, the bottom end of the discharge tube is positioned over the middle area of the toilet bowl.

Portable urinal apparatus

Growing community of inventors

Saratoga, CA, United States of America

Edward T Chang