Development of far-infrared camera system for automotive

2019 ◽  
Author(s):  
Satoru Yokoi ◽  
Jun Takahashi ◽  
Shigetoshi Tokita
Keyword(s):  
Infrared Camera ◽  
Far Infrared ◽  
Camera System

Direct Spherical Calibration of Omnidirectional Far Infrared Camera System

2019 ◽  
Vol 19 (13) ◽  
pp. 5285-5298 ◽  
Author(s):  
David L. Stone ◽  
Guarav Shah ◽  
Yuichi Motai
Keyword(s):  
Infrared Camera ◽  
Far Infrared ◽  
Camera System

Coaxial Visible and Far-infrared Camera System Considering Dust Resistance

2017 ◽  
Vol 2017 (0) ◽  
pp. 2A1-P03
Author(s):  
Yuka OGINO ◽  
Takashi SHIBATA ◽  
Masayuki TANAKA ◽  
Masatoshi OKUTOMI
Keyword(s):  
Infrared Camera ◽  
Far Infrared ◽  
Camera System

Evaluation of Far Infrared Camera for Surface Image Velocimeter Versatile in Day and Night Measurement

2015 ◽  
Vol 48 (8) ◽  
pp. 659-672 ◽  
Author(s):  
Yu Kwonkyu ◽  
◽  
Kim Seojun ◽  
Yoo Byeongnam ◽  
Bae Inhyuk
Keyword(s):  
Infrared Camera ◽  
Far Infrared ◽  
Surface Image

scholarly journals Supermicrosurgical Suture-Stent Technique for A Lymphaticovenular Bypass

2021 ◽  
Vol 10 (12) ◽  
pp. 2595
Author(s):  
Ryo Karakawa ◽  
Hidehiko Yoshimatsu ◽  
Keisuke Kamiya ◽  
Yuma Fuse ◽  
Tomoyuki Yano
Keyword(s):  
Lower Extremity ◽  
Success Rate ◽  
Infrared Camera ◽  
Conventional Technique ◽  
Minimal Risk ◽  
Exclusion Criteria ◽  
Back Wall ◽  
Camera System ◽  
Good Patency

Background: Lymphaticovenular anastomosis (LVA) is a challenging procedure and requires a sophisticated supermicrosurgical technique. The aim of this study was to evaluate and establish a discrete supermicrosurgical anastomosis method using the “suture-stent technique”. Methods: Forty-eight LVA sites of twenty patients with lower extremity lymphedema who had undergone LVA between July 2020 and January 2021 were included in this study. LVA was performed with the conventional technique or with the suture-stent technique. The patency of the anastomoses was evaluated using an infrared camera system intraoperatively. The success rate on the first try and the final success rate for each group were compared. Results: After full application of the exclusion criteria, 35 LVAs of 16 patients including 20 limbs were included in the analysis. The ratio of good patency findings after anastomosis in the suture-stent technique group was 100%. The incidences of leakage or occlusion on the first try were statistically greater in the conventional technique group (29.4%) than in the suture-stent technique group (0%) (p = 0.0191). All anastomoses achieved good patency in the final results. Conclusion: With its minimal risk of catching the back wall during the anastomosis, the suture-stent technique can be considered an optimal anastomosis option for LVA.

scholarly journals Plant Leaf Detection and Counting in a Greenhouse during Day and Nighttime Using a Raspberry Pi NoIR Camera

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6659
Author(s):  
Aryuanto Soetedjo ◽  
Evy Hendriarianti
Keyword(s):  
Execution Time ◽  
Low Cost ◽  
Infrared Camera ◽  
Raspberry Pi ◽  
Camera System ◽  
Detection And Counting ◽  
Outdoor Environments ◽  
Static Images ◽  
Leaf Detection ◽  
Non Destructive

A non-destructive method using machine vision is an effective way to monitor plant growth. However, due to the lighting changes and complicated backgrounds in outdoor environments, this becomes a challenging task. In this paper, a low-cost camera system using an NoIR (no infrared filter) camera and a Raspberry Pi module is employed to detect and count the leaves of Ramie plants in a greenhouse. An infrared camera captures the images of leaves during the day and nighttime for a precise evaluation. The infrared images allow Otsu thresholding to be used for efficient leaf detection. A combination of numbers of thresholds is introduced to increase the detection performance. Two approaches, consisting of static images and image sequence methods are proposed. A watershed algorithm is then employed to separate the leaves of a plant. The experimental results show that the proposed leaf detection using static images achieves high recall, precision, and F1 score of 0.9310, 0.9053, and 0.9167, respectively, with an execution time of 551 ms. The strategy of using sequences of images increases the performances to 0.9619, 0.9505, and 0.9530, respectively, with an execution time of 516.30 ms. The proposed leaf counting achieves a difference in count (DiC) and absolute DiC (ABS_DiC) of 2.02 and 2.23, respectively, with an execution time of 545.41 ms. Moreover, the proposed method is evaluated using the benchmark image datasets, and shows that the foreground–background dice (FBD), DiC, and ABS_DIC are all within the average values of the existing techniques. The results suggest that the proposed system provides a promising method for real-time implementation.

Development of the HAWC far-infrared camera for SOFIA

2004 ◽  
Author(s):  
Doyal A. Harper ◽  
Arlin E. Bartels ◽  
Sean C. Casey ◽  
David T. Chuss ◽  
Jessie L. Dotson ◽  
...  
Keyword(s):  
Infrared Camera ◽  
Far Infrared

Theoretical and Experimental Study of Electrohydrodynamic Heat Transfer Enhancement Through Wire-Plate Corona Discharge

1997 ◽  
Vol 119 (3) ◽  
pp. 604-610 ◽  
Author(s):  
B. L. Owsenek ◽  
J. Seyed-Yagoobi
Keyword(s):  
Heat Transfer ◽  
Fluid Motion ◽  
Infrared Camera ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Numerical Code ◽  
Transfer Coefficients ◽  
Camera System ◽  
Heat Transfer Coefficients ◽  
Fine Wire

Heat and mass transfer between a surface and the surrounding gas can be enhanced by the application of electric body forces that induce jet or plume-like fluid motion. Such enhancement causes no noise or vibration, can be applied in complex, isolated geometries, and allows simple control of surface temperatures. This paper examines the potentially useful case of multiple fine-wire electrodes suspended in the open air above a grounded and heated horizontal surface. An infrared camera system was used to obtain a complete and accurate distribution of local heat transfer coefficients on the impingement surface. A numerical code was developed and verified by comparison with experimental data. This code was then used to investigate and compare the heat transfer generated by novel electrode geometries.

HAWC: a far-infrared camera for SOFIA

1998 ◽  
Author(s):  
Doyal A. Harper ◽  
Samuel H. Moseley, Jr. ◽  
Ian Gatley ◽  
Sean C. Casey ◽  
Rhodri Evans ◽  
...  
Keyword(s):  
Infrared Camera ◽  
Far Infrared

Selecting among competing models of electro-optic, infrared camera system range performance

2013 ◽  
Vol 52 (11) ◽  
pp. 113108 ◽  
Author(s):  
Jonathan M. Nichols ◽  
James E. Hines ◽  
James D. Nichols
Keyword(s):  
Infrared Camera ◽  
Camera System ◽  
Electro Optic ◽  
Competing Models
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