公开(公告)号：US09253471B2

公开(公告)日：2016-02-02

申请号：US13767521

申请日：2013-02-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghyuk Bae ,  Kyu-Min Kyung ,  Tae-Chan Kim ,  Seunghee Lee

IPC: H04N13/02 ,  H04N5/12 ,  G01S17/10 ,  G01S17/87 ,  G01S17/89 ,  H04N5/04

CPC classification number: H04N13/271 ,  G01S17/107 ,  G01S17/87 ,  G01S17/89 ,  H04N5/04 ,  H04N5/123

Abstract: A depth camera includes a sensor unit receiving a reflected light and in response thereto outputting an electrical sensing signal; and a synchronization information calculation unit calculating a performance index with reference to the sensing signal, and with reference to the performance index, generating synchronization information for synchronizing a demodulation clock for sensing the received reflected light. The sensor unit adjusts the frequency and/or phase of the demodulation clock with reference to the synchronization information.

Abstract translation: 深度照相机包括接收反射光的传感器单元，并且响应于此输出电感测信号; 以及同步信息计算单元，参考感测信号来计算性能指标，并且参考性能指标，产生用于同步用于感测所接收的反射光的解调时钟的同步信息。 传感器单元参照同步信息调整解调时钟的频率和/或相位。

公开(公告)号：US11350062B2

公开(公告)日：2022-05-31

申请号：US16657204

申请日：2019-10-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwanghyuk Bae ,  Chaesung Kim

IPC: H04N13/25 ,  H04N9/04 ,  H04N5/225 ,  H04N5/235 ,  H04N9/09 ,  G01S17/08 ,  H04N13/254 ,  G01S17/89 ,  H04N5/247 ,  H04N5/33 ,  G01S17/46 ,  H04N5/232 ,  G01S17/02 ,  G06V10/147 ,  G06V40/18 ,  G06V40/16

Abstract: An image detecting device includes a color image sensor configured to sense visible light and to output color image data based on the sensed visible light; a first infrared lighting source configured to provide first infrared rays to a subject; a second infrared lighting source configured to provide second infrared rays to the subject; a mono image sensor configured to sense a first infrared light or a second infrared light reflected from the subject and output infrared image data; and
an image signal processor configured to, measure an illuminance value based on the color image data, measure a distance value of the subject based on a portion of the infrared image data corresponding to the first infrared light, and obtain an identification image of the subject based on the illuminance value, the distance value, and a portion of the infrared image data corresponding to the second infrared light.

公开(公告)号：US11789133B2

公开(公告)日：2023-10-17

申请号：US16829467

申请日：2020-03-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Muncheon Kang ,  Kwanghyuk Bae ,  Hayoung Ko ,  Duckchan Seo ,  Chulwoong Lee

IPC: G01S17/08 ,  G01S7/48 ,  G01S7/497

CPC classification number: G01S7/497 ,  G01S7/4808 ,  G01S17/08

Abstract: A method of calibrating errors in a time-of-flight (ToF) sensor includes illuminating a test object with a transmission light that is modulated based on a modulation signal; generating, using a buffer chain circuit, a plurality of demodulation signals having different local delay phases; providing a plurality of measured phase differences by providing the plurality of demodulation signals to a plurality of pixel groups included in a ToF sensor to sample a reception light reflected from the test object based on the plurality of demodulation signals; determining a wiggling error based on the plurality of measured phase differences, the wiggling error depending on a phase difference between the transmission light and the reception light; and calibrating a measured distance from the ToF sensor to a target object based on the wiggling error.

公开(公告)号：US20230162368A1

公开(公告)日：2023-05-25

申请号：US17992296

申请日：2022-11-22

Applicant: SAMSUNG ELECTRONICS CO.,LTD.

Inventor： Srenivas VARADARAJAN ,  Kaustav Chanda ,  Kwanghyuk Bae ,  Manish Goel

IPC: G06T7/12 ,  G01S17/894 ,  G06T17/00 ,  G06T7/521

CPC classification number: G06T7/12 ,  G01S17/894 ,  G06T17/00 ,  G06T7/521 ,  G06T2207/20021 ,  G06T2200/08 ,  G06T2207/20068 ,  G06T2207/10028

Abstract: A method for optimizing sampling in a spot Time-of-Flight (ToF) sensor includes receiving an image of a scene, dividing the image into plural rectangular regions, based on an edge feature in the image, computing an edge region alignment for each rectangular region by analyzing a Histogram of oriented Gradients (HoG) distribution corresponding to the rectangular region, re-projecting ToF data on a Complementary Metal Oxide Semiconductor (CMOS) Image Sensor (CIS) image plane according to the edge region alignment, sampling one or more rectangular regions from among the plural rectangular regions by comparing a regional depth variance of each rectangular region with a threshold depth variance, and reconfiguring an illumination pattern for a spot ToF sensor image frame using the one or more rectangular regions that are sampled.

公开(公告)号：US10547829B2

公开(公告)日：2020-01-28

申请号：US15623905

申请日：2017-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwanghyuk Bae ,  Chaesung Kim

IPC: H04N13/25 ,  H04N5/225 ,  H04N5/235 ,  H04N9/09 ,  G06K9/00 ,  G01S17/08 ,  H04N13/254

Abstract: An image detecting device includes a color image sensor configured to sense visible light and to output color image data based on the sensed visible light; a first infrared lighting source configured to provide first infrared rays to a subject; a second infrared lighting source configured to provide second infrared rays to the subject; a mono image sensor configured to sense a first infrared light or a second infrared light reflected from the subject and output infrared image data; and an image signal processor configured to, measure an illuminance value based on the color image data, measure a distance value of the subject based on a portion of the infrared image data corresponding to the first infrared light, and obtain an identification image of the subject based on the illuminance value, the distance value, and a portion of the infrared image data corresponding to the second infrared light.