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Camera calibration method for an infrared horizon sensor with a large field of view Research Article

Huajian DENG, Hao WANG, Xiaoya HAN, Yang LIU, Zhonghe JIN,roger@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 1,   Pages 141-153 doi: 10.1631/FITEE.2200079

Abstract: with a blind area in the center greatly limits the accuracy and feasibility of traditional geometric calibrationThe camera is mounted on a rotary table.three-step parameter estimation algorithm is proposed to avoid precisely measuring the positions of the cameraExperiments are implemented with 10 s to verify the effectiveness of the calibration method.The results show that the proposed method is highly stable, and that the calibration accuracy is at least

Keywords： Infrared horizon sensor     Ultra-field infrared camera     Camera calibration    

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Design and calibration of a new high-definition three-dimensional laparoscopic system

Jia TANG,Li-qiang WANG,Bo YUAN,Hong JIANG,Qi-ming ZHU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 1,   Pages 79-84 doi: 10.1631/FITEE.1400149

Abstract: high-definition (HD) 3D laparoscopic system including a dual channel optical system, two cameras, a cameraA modified pinhole camera model is used for camera calibration and a new method of depth measurement

Keywords： Dual optical channels     Three dimensional     Camera calibration     Pinhole model     Depth measurement     Laparoscopic    

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Development of a novel hand−eye calibration for intuitive control of minimally invasive surgical robot

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0698-y

Abstract: Obtaining the transformation with respect to the laparoscope and robot slave arm frames using hand−eye calibrationWe proposed a novel two-step modified dual quaternion for hand−eye calibration in this study.The dual quaternion was exploited to solve the hand−eye calibration simultaneously and powered by anThe obtained hand−eye calibration result was applied to the intuitive control by using the hand−eye coordinationResults demonstrate this method can improve the calibration accuracy.

Keywords： minimally invasive surgery     hand−eye calibration     intuitive control     surgical robot     dual quaternion    

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Development of an onsite calibration device forrobot manipulators Research Article

Ziwei WAN, Chunlin ZHOU, Haotian ZHANG, Jun WU

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 2,   Pages 217-230 doi: 10.1631/FITEE.2200172

Abstract: During the calibration procedure, the robot manipulator first moves automatically to multiple end-effectorThe relative mounting positions are accurately measured and used as prior information to improve calibrationThe results of theoretical analysis indicate that MultiCal reduces calibration accuracy by 10% to 20%The results of a calibration experiment conducted on a Staubli TX90 robot show that MultiCal has only7% to 14% lower calibration accuracy compared to a measuring arm with a laser scanner, and 21% to 30%

Keywords： Calibration device     Kinematic calibration     Onsite calibration     Absolute accuracy    

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Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 316-321 doi: 10.1007/s11465-010-0021-1

Abstract: According to the deficiencies of remote calibration mode based on material object reference, a new modelof a remote calibration system for frequency based on in-place benchmark is introduced, which is madeof a calibration subsystem on the spot and a remote management subsystem.The key technology of some key problems for the remote calibration system is particularly discussed,a phase method, frequency division based on dual high-frequency phase locked loop (PLL), and remote calibration

Keywords： remote calibration     in-place benchmark     frequency comparison     global position system (GPS)    

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Transient imaging with a time-of-flight camera and its applications

Jing-yu Lin, Ri-hui Wu, Hong-man Wang, Ye-bin Liu,jylin@gxu.edu.cn,liuyebin@tsinghua.edu.cn

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1268-1276 doi: 10.1631/FITEE.1700556

Abstract: is a technique in photography that records the process of light propagation before it reaches a stationary state such that events at the light speed level can be observed. In this review we introduce three main models for with a : correlation model, frequency-domain model, and compressive sensing model. applications usually involve resolving the problem of light transport and separating the light rays arriving along different paths. We discuss two of the applications: imaging objects inside and recovering both the shape and texture of an object around a corner.

Keywords： Transient imaging     Time-of-flight (ToF) camera     Scattering media     Around corners    

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Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 3-3 doi: 10.1007/s11465-021-0659-x

Abstract: By applying the calibration method, a reasonable, reliable forward kinematic model is built, and the

Keywords： ultrasound image guidance     prostate percutaneous intervention     parallel robot     kinematics identification     particle swarm optimization     informative value    

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Multi-aperture optical imaging systems and their mathematical light field acquisition models Review Article

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 823-844 doi: 10.1631/FITEE.2100058

Abstract:

Inspired by the compound eyes of insects, many s have been proposed to improve the imaging quality, e.g., to yield a high-resolution image or an image with a large field-of-view. Previous research has reviewed existing s, but few papers emphasize the which is essential to bridge the gap between configuration design and application. In this paper, we review typical s (i.e., , , and ), and then summarize general mathematical s for different configurations. These mathematical models provide methods for calculating the key indexes of a specific , such as the field-of-view and sub-image overlap ratio. The mathematical tools simplify the quantitative design and evaluation of imaging systems for researchers.

Keywords： Multi-aperture optical imaging system     Artificial compound eye     Light field camera     Camera array     Light    

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Edge detection of steel plates at high temperature using image measurement

Qiong Zhou, Qi An

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 77-82 doi: 10.1007/s11465-009-0013-1

Abstract: plate; finally, pixel coordinates of the edge position are transformed to physical coordinates through calibration

Keywords： thermal expansion     image measurement     edge detection     image calibration    

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1000× Faster Camera and Machine Vision with Ordinary Devices Article

Tiejun Huang, Yajing Zheng, Zhaofei Yu, Rui Chen, Yuan Li, Ruiqin Xiong, Lei Ma, Junwei Zhao, Siwei Dong, Lin Zhu, Jianing Li, Shanshan Jia, Yihua Fu, Boxin Shi, Si Wu, Yonghong Tian

Engineering 2023, Volume 25, Issue 6,   Pages 110-119 doi: 10.1016/j.eng.2022.01.012

Abstract: justify;">In digital cameras, we find a major limitation: the image and video form inherited from a film cameracomplementary metal-oxide-semiconductor (CMOS) sensors and integrated circuits, we have developed a vidar cameraWe demonstrate the utility of the vidar camera and the super vision system in an assistant referee and

Keywords： Vidar camera     Spiking neural networks     Super vision system     Full-time imaging    

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Application of micro-genetic algorithm for calibration of kinetic parameters in HCCI engine combustion

HUANG Haozhong, SU Wanhua

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 86-92 doi: 10.1007/s11708-008-0003-8

Abstract: The results of this study have demonstrated that the mGA is an effective tool to facilitate the calibration

Keywords： homogeneous     different     combustion     autoignition     compression    

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New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 301-304 doi: 10.1007/s11465-007-0053-3

Abstract: Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests. During the process, all position errors on the entire plane table are measured by the equipment, which is limited to a small field. All errors are obtained first by measuring the error of the basic position near the original point. On the basis of that positional error, the positional errors far away from the original point are measured. Using this analogy, the error information on the positional points on the entire plane can be obtained. The process outlined above is called the relay method. Test results indicate that the accuracy and repeatability are high, and the method can be used to calibrate geometric errors on the plane of CNC machine tools after backlash errors have been well compensated.

Keywords： positional     volumetric     information     process     repeatability    

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In-orbit calibration and validation of atmospheric correction microwave radiometer on HY-2A satellite

Wang Zhenzhan,Zhang Dehai,Zhao Jin and Li Yun

Strategic Study of CAE 2013, Volume 15, Issue 7,   Pages 44-52

Abstract: After discussion and analysis on thermal vacuum calibration method of ACMR, microwave transfer functions

Keywords： HY-2A     ACMR     calibration and validation    

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Multi-camera systems for rehabilitation therapies: a study of the precision of MicrosoftKinect sensors

Miguel OLIVER,Francisco MONTERO,José Pascual MOLINA,Pascual GONZÁLEZ,Antonio FERNÁNDEZ-CABALLERO

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 4,   Pages 348-364 doi: 10.1631/FITEE.1500347

Abstract: This paper seeks to determine how the overlap of several infrared beams affects the tracked position of the user, depending on the angle of incidence of light, distance to the target, distance between sensors, and the number of capture devices used. We also try to show that under ideal conditions using several Kinect sensors increases the precision of the data collected. The results obtained can be used in the design of telerehabilitation environments in which several RGB-D cameras are needed to improve precision or increase the tracking range. A numerical analysis of the results is included and comparisons are made with the results of other studies. Finally, we describe a system that implements intelligent methods for the rehabilitation of patients based on the results of the tests carried out.

Keywords： Kinect sensor     Rehabilitation system     Capture precision     Multi-camera system    

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Design of altimeter sea surface height calibration buoy based on GPS

Chen Chuntao,Yan Longhao,Zhang Xiaoxu,Zhang Qian,Zhai Wanlin,Zhu Jianhua

Strategic Study of CAE 2014, Volume 16, Issue 6,   Pages 109-112

Abstract:

GPS buoy is the important instrument for the calibration of altimeterThe result shows that designed GPS buoy can meet the challenge of altimeter sea surface height calibration

Keywords： Satellite altimeter     calibration     GPS buoy     numerical simulation    

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Title Author Date Type Operation

Camera calibration method for an infrared horizon sensor with a large field of view

Huajian DENG, Hao WANG, Xiaoya HAN, Yang LIU, Zhonghe JIN,roger@zju.edu.cn

Journal Article

Design and calibration of a new high-definition three-dimensional laparoscopic system

Jia TANG,Li-qiang WANG,Bo YUAN,Hong JIANG,Qi-ming ZHU

Journal Article

Development of a novel hand−eye calibration for intuitive control of minimally invasive surgical robot

Journal Article

Development of an onsite calibration device forrobot manipulators

Ziwei WAN, Chunlin ZHOU, Haotian ZHANG, Jun WU

Journal Article

Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Journal Article

Transient imaging with a time-of-flight camera and its applications

Jing-yu Lin, Ri-hui Wu, Hong-man Wang, Ye-bin Liu,jylin@gxu.edu.cn,liuyebin@tsinghua.edu.cn

Journal Article

Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle

Journal Article

Multi-aperture optical imaging systems and their mathematical light field acquisition models

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Journal Article

Edge detection of steel plates at high temperature using image measurement

Qiong Zhou, Qi An

Journal Article

1000× Faster Camera and Machine Vision with Ordinary Devices

Tiejun Huang, Yajing Zheng, Zhaofei Yu, Rui Chen, Yuan Li, Ruiqin Xiong, Lei Ma, Junwei Zhao, Siwei Dong, Lin Zhu, Jianing Li, Shanshan Jia, Yihua Fu, Boxin Shi, Si Wu, Yonghong Tian

Journal Article

Application of micro-genetic algorithm for calibration of kinetic parameters in HCCI engine combustion

HUANG Haozhong, SU Wanhua

Journal Article

New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

Journal Article

In-orbit calibration and validation of atmospheric correction microwave radiometer on HY-2A satellite

Wang Zhenzhan,Zhang Dehai,Zhao Jin and Li Yun

Journal Article

Multi-camera systems for rehabilitation therapies: a study of the precision of MicrosoftKinect sensors

Miguel OLIVER,Francisco MONTERO,José Pascual MOLINA,Pascual GONZÁLEZ,Antonio FERNÁNDEZ-CABALLERO

Journal Article

Design of altimeter sea surface height calibration buoy based on GPS

Chen Chuntao,Yan Longhao,Zhang Xiaoxu,Zhang Qian,Zhai Wanlin,Zhu Jianhua

Journal Article