公开(公告)号：US20190005671A1

公开(公告)日：2019-01-03

申请号：US16066798

申请日：2016-12-23

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Chi Zhang ,  Alireza Yasan ,  Hendrik Volkerink

IPC: G06T7/593 ,  H04N13/254 ,  H04N13/239 ,  G06K9/62 ,  G06K9/32 ,  G06K9/52 ,  G06T7/521

Abstract: A brightness image of a scene is converted into a corresponding frequency domain image and it is determined whether a threshold condition is satisfied for each of one or more regions of interest in the frequency domain image, the threshold condition being that the number of frequencies in the region of interest is at least as high as a threshold value. The results of the determination can be used to facilitate selection of an appropriate block matching algorithm for deriving disparity or other distance data and/or to control adjustment of an illumination source that generates structured light for the scene.

公开(公告)号：US20180213201A1

公开(公告)日：2018-07-26

申请号：US15745150

申请日：2016-07-13

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Chi Zhang ,  Alireza Yasan ,  Xin Liu ,  Florin Cutu ,  Dmitry Ryuma

IPC: H04N13/00 ,  G06T7/00 ,  G06K9/62

CPC classification number: H04N13/128 ,  G06K9/6212 ,  G06T7/97 ,  G06T2207/10012 ,  H04N2013/0081

Abstract: Providing a disparity map includes acquiring first and second stereo images, binarizing the first stereo image to obtain a binarized image, and applying a block matching technique to the first and second stereo images to obtain an initial disparity map in which individual image elements are assigned a respective initial disparity value. For each respective image element, an updated disparity value that represents a product of the initial disparity value assigned to the image element and a value associated with the image element in the binarized image is obtained. An updated disparity map can be generated and represents the updated disparity values of the image elements.

公开(公告)号：US20180225866A1

公开(公告)日：2018-08-09

申请号：US15749825

申请日：2016-08-04

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Chi Zhang ,  Xin Liu ,  Florin Cutu

IPC: G06T17/00

Abstract: Presenting a merged, fused three-dimensional point cloud includes acquiring multiple sets of images of a scene from different vantage points, each set of images including respective stereo matched images and a color image. For each respective set of images, a disparity map based on the plurality of stereo images is obtained, data from the color image is fused onto the disparity map so as to generate a fused disparity map, and a three-dimensional fused point cloud is created from the fused disparity map. The respective three-dimensional fused point clouds is merged together so as to obtain a merged, fused three-dimensional point cloud. The techniques can be advantageous even under the constraints of sparseness and low-depth resolution, and are suitable, in some cases, for real-time or near real-time applications in which computing time needs to be reduced.

公开(公告)号：US20180032210A1

公开(公告)日：2018-02-01

申请号：US15661193

申请日：2017-07-27

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Florin Cutu ,  Chi Zhang

IPC: G06F3/042 ,  G06T7/246 ,  G06K9/00 ,  G06T7/155 ,  G06F3/01 ,  G06T7/521 ,  G06T7/11

Abstract: The present disclosure describes projecting a structured light pattern onto a surface and detecting and responding to interactions with the same. A method includes-acquiring an image based on light reflected from a vicinity of the projection surface, and identifying regions of the acquired image that correspond to a feature that is within a specified distance of the projection surface by identifying regions of the acquired image for which intensity data differs relative to other regions of the acquired image and which fit a specified homographic relationship with respect to corresponding regions of a reference image.

公开(公告)号：US20180024697A1

公开(公告)日：2018-01-25

申请号：US15654904

申请日：2017-07-20

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Chi Zhang ,  Florin Cutu

IPC: G06F3/042 ,  G06F3/0488 ,  G06F3/01

CPC classification number: G06F3/0426 ,  G06F3/017 ,  G06F3/04883 ,  G06F3/04886 ,  G06K9/00335 ,  G06K9/00355

Abstract: The present disclosure describes projecting a structured light pattern projected onto a surface and detecting and responding to interactions with the same. The techniques described here can, in some cases, facilitate recognizing that an object such as a user's hand is adjacent the plane of a projection surface and can distinguish the object from the projection surface itself. Movement of the object then can be interpreted, for example, as a specified type of gesture that can trigger a specified type of operation to occur.