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公开(公告)号：US09965824B2
公开(公告)日：2018-05-08
申请号：US14694828
申请日：2015-04-23
Applicant: Google LLC
Inventor： Qiuling Zhu , Ofer Shacham , Albert Meixner , Jason Rupert Redgrave , Daniel Frederic Finchelstein , David Patterson , Neeti Desai , Donald Stark , Edward T. Chang , William R. Mark
Abstract: 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.
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公开(公告)号：US11164337B2
公开(公告)日：2021-11-02
申请号：US16956730
申请日：2019-10-04
Applicant: Google LLC
Inventor： Edward T. Chang , Mykhaylo Kurinnyy , Zhaowei Wang , Jonathan James Taylor
IPC: G06T7/80 , G06T7/73 , H04N13/239 , H04N13/254
Abstract: 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.
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公开(公告)号：US20210248782A1
公开(公告)日：2021-08-12
申请号：US16956730
申请日：2019-10-04
Applicant: Google LLC
Inventor： Edward T. Chang , Mykhaylo Kurinnyy , Zhaowei Wang , Jonathan James Taylor
IPC: G06T7/80 , G06T7/73 , H04N13/239 , H04N13/254
Abstract: 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.
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