公开(公告)号：US10078796B2

公开(公告)日：2018-09-18

申请号：US15052063

申请日：2016-02-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hwasup Lim ,  Sungkuk Chun ,  Sang Chul Ahn

IPC: G06K9/62 ,  G06K9/00 ,  G06T7/593

CPC classification number: G06K9/6202 ,  G06K9/00389 ,  G06K9/6218 ,  G06T7/593 ,  G06T2207/10028 ,  G06T2207/30196

Abstract: Disclosed is an apparatus for hand gesture recognition based on a depth image, which includes a depth image acquiring unit configured to acquire a depth image including a hand region, a depth point classifying unit configured to classify depth points of a hand region in the depth image according to a corresponding hand portion by means of a machine studying method, and a hand model matching unit configured to match a three-dimensional hand model with the classified depth points by using distances between the classified depth points and a hand portion respectively corresponding to the depth points. A recognition method using the apparatus is also disclosed.

公开(公告)号：US10713833B2

公开(公告)日：2020-07-14

申请号：US15467269

申请日：2017-03-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hwasup Lim ,  Youngmin Kim ,  Jae-In Hwang ,  Sang Chul Ahn

IPC: G06T13/40 ,  G06F3/01 ,  G06F3/03 ,  G06T7/143 ,  G06T7/246 ,  G06T7/73

Abstract: Facial expressions and whole-body gestures of a 3D character are provided based on facial expressions of a user and gestures of a hand puppet perceived using a depth camera.

公开(公告)号：US20140361175A1

公开(公告)日：2014-12-11

申请号：US14067028

申请日：2013-10-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hwasup Lim ,  Jae Hun Kim ,  Sang Chul Ahn ,  Hyoung Gon Kim ,  Junha Roh

IPC: G01B11/22 ,  G01J5/08

CPC classification number: G01S7/486 ,  G01B11/22 ,  G01S7/484 ,  G01S17/89 ,  H01L31/055 ,  H04N5/33 ,  H04N13/395

Abstract: Disclosed is a device for extracting depth information using infrared light which can be provided at low cost in such a way to apply a nonlinear crystal and a photonic crystal to a depth camera and comprises infrared light emission unit which emits a first infrared light toward a subject; a wavelength conversion unit which concerts the first infrared light reflected from the subject into a second infrared light having a wavelength shorter than the wavelength of the first infrared light; and depth information extraction unit which detects the converted second infrared light and extracts depth information of the subject, wherein the wavelength conversion unit is formed of a crystal capable of concerting the length of the wavelength. The wavelength conversion unit is formed of a crystal which is capable of converting the length of wavelength.

Abstract translation: 公开了一种使用红外光提取深度信息的装置，其可以以低成本提供以将非线性晶体和光子晶体应用于深度相机的方式提供，并且包括向被摄体发射第一红外光的红外光发射单元 ; 波长转换单元，其将从被摄体反射的第一红外光共振成具有比第一红外光的波长短的波长的第二红外光; 以及深度信息提取单元，其检测所转换的第二红外光并提取被摄体的深度信息，其中所述波长转换单元由能够协调所述波长长度​​的晶体形成。 波长转换单元由能够转换波长长度的晶体形成。