公开(公告)号：US20180165552A1

公开(公告)日：2018-06-14

申请号：US15375438

申请日：2016-12-12

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： SHIH-SHINH HUANG ,  SHIH-CHE CHIEN ,  FENG-CHIA CHANG ,  CHIEN-HAO HSIAO ,  YU-SUNG HSIAO

IPC: G06K9/62 ,  H04N19/176 ,  G06K9/46

CPC classification number: G06K9/4642 ,  G06K9/00369 ,  G06K9/00791 ,  G06K9/6269 ,  H04N19/103 ,  H04N19/136 ,  H04N19/176 ,  H04N19/90

Abstract: An all-weather thermal-image pedestrian detection method includes (a) capturing diurnal thermal images and nocturnal thermal images of a same pedestrian and non-pedestrian object in a same defined block to create a sample database of thermal images, wherein the sample database comprises pedestrian samples and non-pedestrian samples; (b) performing LBP encoding on the pedestrian samples and the non-pedestrian samples, wherein complementary LBP codes in the same defined block are treated as identical LBP codes; (c) expressing the LBP codes in the same defined block as features by a gradient direction histogram (HOG) to obtain feature training samples of the pedestrian samples and the non-pedestrian samples; (d) entering the feature training samples into a SVM to undergo training by Adaboost so as to form a strong classifier; and (e) effectuating pedestrian detection by searching the strong classifiers in thermal images with sliding window technique to detect for presence of pedestrians.

公开(公告)号：US20190162828A1

公开(公告)日：2019-05-30

申请号：US15823750

申请日：2017-11-28

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHAO-WEN LIANG ,  SHIH-CHE CHIEN ,  YU-SUNG HSIAO

IPC: G01S7/481 ,  G01S17/89

Abstract: A light detection and ranging system comprises an optical transmitter for beam scanning on a scan region, and receiving reflected light from the scan region; and an optical receiver for directing the reflected light for signal conversion. The optical transmitter includes a beam refractive unit including optical refractive devices, rotatably disposed about a rotation axis, for directing a collimated laser beam from a first optical path towards a direction depending on rotation angles of the optical refractive devices; and a motion unit for actuating relative motion of the optical refractive devices so as to perform beam scanning towards directions on the scan region. The optical receiver includes an off-axis reflective unit, disposed in the first optical path, for directing the reflected light towards a second optical path; and a light detection unit, disposed in the second optical path, for performing signal conversion on the reflected light.

公开(公告)号：US20180364354A1

公开(公告)日：2018-12-20

申请号：US15627935

申请日：2017-06-20

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： TE-YUAN CHUNG ,  RUOH-ROU CHANG ,  SHIH-CHE CHIEN ,  YU-SUNG HSIAO

IPC: G01S17/02 ,  G01S7/499

CPC classification number: G01S17/02 ,  G01S7/499

Abstract: A laser radar system capable of active polarization comprises a signal processing unit for sending a control signal; a laser emitting unit for emitting a first laser to a target after receiving the control signal, wherein the laser emitting unit comprises a liquid crystal polarization driver and a liquid crystal polarization component group, and the liquid crystal polarization driver controls a phase delay of the liquid crystal polarization component group to therefore change a polarized state of the first laser; and a laser receiving unit for receiving a second laser reflected off the target and analyzing polarization information of the second laser through the signal processing unit to evaluate surface characteristics of the target.

公开(公告)号：US20180172803A1

公开(公告)日：2018-06-21

申请号：US15379643

申请日：2016-12-15

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHAO-WEN LIANG ,  LI-TSUN WANG ,  SHIH-CHE CHIEN ,  YU-SUNG HSIAO

IPC: G01S7/481

CPC classification number: G01S7/4816 ,  G01S7/4814 ,  G02B13/002

Abstract: A laser radar device comprises a laser projecting system and a laser radar detecting system. The laser projecting system comprises a laser diode; and a light source orientation adjustment unit comprising a collimating lens and a Powell lens to modulate the angle at which the first incident laser beam is projected onto an object. The laser radar detecting system comprises at least two laser radar detection units disposed in the horizontal direction and vertical direction of the object, respectively. The laser radar detection units each comprise a wedge-shaped lens, an aspherical lens system and an optical detector. By designing optical parameters of the wedge-shaped lens and stacking the laser radar detection units in the horizontal direction and vertical direction, it is feasible to facilitate overall device manufacturing and processing, meet R&D needs, and adjust an optical system in its entirety easily.