Load movement measurement using a near-infrared CCD camera for aircraft cargo surveillance

2002 ◽  
Author(s):  
T. Sentenac ◽  
J.-J. Orteu ◽  
Y. Le Maoult ◽  
M. Devy ◽  
G. Boucourt
Keyword(s):  
Near Infrared ◽  
Ccd Camera ◽  
Load Movement

Detection of the fluorescence of GI vessels in rats using a CCD camera or a near-infrared video endoscope

1999 ◽  
Vol 50 (5) ◽  
pp. 684-688 ◽  
Author(s):  
Eric Borotto ◽  
Jacques Englender ◽  
Jean-Claude Pourny ◽  
Sylvie Naveau ◽  
Jean-Claude Chaput ◽  
...  
Keyword(s):  
Near Infrared ◽  
Ccd Camera ◽  
Infrared Video

Power transistor near-infrared microthermography using an intensified CCD camera and frame integration

2007 ◽  
Vol 18 (8) ◽  
pp. 2696-2703 ◽  
Author(s):  
S Dhokkar ◽  
B Serio ◽  
P Lagonotte ◽  
P Meyrueis
Keyword(s):  
Near Infrared ◽  
Ccd Camera ◽  
Power Transistor

A Hyperspectral Imaging System for Identification of Faecal and Ingesta Contamination on Poultry Carcasses

2003 ◽  
Vol 11 (4) ◽  
pp. 269-281 ◽  
Author(s):  
Kurt C. Lawrence ◽  
William R. Windham ◽  
Bosoon Park ◽  
R. Jeff Buhr
Keyword(s):  
Real Time ◽  
Hyperspectral Imaging ◽  
Near Infrared ◽  
Imaging System ◽  
Principal Component ◽  
Ccd Camera ◽  
Sample Population ◽  
Multivariate System ◽  
Ratio Image ◽  
On Line

A method and system for detecting faecal and ingesta contaminants on poultry carcasses were demonstrated. A visible/near infrared monochromator, which measured reflectance and principal component analysis were first used to identify key wavelengths from faecal and uncontaminated skin samples. Measurements at 434, 517, 565 and 628 nm were identified and used for evaluation with a hyperspectral imaging system. The hyperspectral imaging system, which was a line-scan (pushbroom) imaging system, consisted of a hyperspectral camera, fibre-optic line lights, a computer and frame grabber. The hyperspectral imaging camera consisted of a high-resolution charge coupled device (CCD) camera, a prism-grating-prism spectrograph, focusing lens, associated optical hardware and a motorised controller. The imaging system operated from about 400 to 900 nm. The hyperspectral imaging system was calibrated for wavelength, distance and percent reflectance and analysis of calibrated images at the key wavelengths indicated that single-wavelength images were inadequate for detecting contaminants. However, a ratio of images at two of the key wavelengths was able to identify faecal and ingesta contaminants. Specifically, the ratio of the 565-nm image divided by the 517-nm image produced good results. The ratio image was then further processed by masking the background and either enhancing the image contrast with a non-linear histogram stretch, or applying a faecal threshold. The results indicated that, for the limited sample population, more than 96% of the contaminants were detected. Thus, the hyperspectral imaging system was able to detect contaminants and showed feasibility, but was too slow for real-time on-line processing. Therefore, a multivariate system operating at 565 and 517 nm, which should be capable of operating at real-time on-line processing speed, should be used. Further research with such a system needs to be conducted.

scholarly journals Near-infrared imaging of brain tumors using the Tumor Paint BLZ-100 to achieve near-complete resection of brain tumors

2014 ◽  
Vol 36 (2) ◽  
pp. E1 ◽  
Author(s):  
Pramod V. Butte ◽  
Adam Mamelak ◽  
Julia Parrish-Novak ◽  
Doniel Drazin ◽  
Faris Shweikeh ◽  
...  
Keyword(s):  
Brain Tumors ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Imaging System ◽  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
Complete Resection ◽  
Human Glioma ◽  
Nir Imaging ◽  
The Brain

Object The intraoperative clear delineation between brain tumor and normal tissue in real time is required to ensure near-complete resection without damaging the nearby eloquent brain. Tumor Paint BLZ-100, a tumor ligand chlorotoxin (CTX) conjugated to indocyanine green (ICG), has shown potential to be a targeted contrast agent. There are many infrared imaging systems in use, but they are not optimized to the low concentration and amount of ICG. The authors present a novel proof-of-concept near-infrared (NIR) imaging system using a standard charge-coupled device (CCD) camera for visualizing low levels of ICG attached to the tumors. This system is small, inexpensive, and sensitive. The imaging system uses a narrow-band laser at 785 nm and a notch filter in front of the sensor at the band. The camera is a 2-CCD camera, which uses identical CCDs for both visible and NIR light. Methods The NIR system is tested with serial dilution of BLZ-100 from 1 μM to 50 pM in 5% Intralipid solution while the excitation energy is varied from 5 to 40 mW/cm2. The analog gain of the CCD was changed from 0, 6, and 12 dB to determine the signal-to-noise ratio. In addition to the Intralipid solution, BLZ-100 was injected 48 hours before euthanizing the mice that were implanted with the human glioma cell line. The brain was removed and imaged using the NIR imaging system. Results The authors' results show that the NIR imaging system using a standard CCD is able to visualize the ICG down to 50 nM of concentration with a high signal-to-noise ratio. The preliminary experiment on human glioma implanted in mouse brains demonstrated that BLZ-100 has a high affinity for glioma compared with normal brain tissue. Additionally, the results show that NIR excitation is able to penetrate deeply and has a potential to visualize metastatic lesions that are separate from the main tumor. Conclusions The authors have seen that BLZ-100 has a very high affinity toward human gliomas. They also describe a small, cost-effective, and sensitive NIR system for visualizing brain tumors tagged using BLZ-100. The authors hope that the use of BLZ-100 along with NIR imaging will be useful to delineate the brain tumors in real time and assist surgeons in near-complete tumor removal to increase survival and reduce neurological deficits.

scholarly journals Evaluating Brightness and Spectral Properties of Click Beetle and Firefly Luciferases Using Luciferin Analogues: Identification of Preferred Pairings of Luciferase and Substrate for In Vivo Bioluminescence Imaging

2020 ◽  
Vol 22 (6) ◽  
pp. 1523-1531
Author(s):  
Giorgia Zambito ◽  
Natasa Gaspar ◽  
Yanto Ridwan ◽  
Mary P. Hall ◽  
Ce Shi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Bioluminescence Imaging ◽  
Spectral Characteristics ◽  
Photon Emission ◽  
Ccd Camera ◽  
Spectral Unmixing ◽  
Tissue Imaging ◽  
Click Beetle

Abstract Purpose Currently, a variety of red and green beetle luciferase variants are available for bioluminescence imaging (BLI). In addition, new luciferin analogues providing longer wavelength luminescence have been developed that show promise for improved deep tissue imaging. However, a detailed assessment of these analogues (e.g., Akalumine-HCl, CycLuc1, and amino naphthyl luciferin (NH2-NpLH2)) combined with state of the art luciferases has not been performed. The aim of this study was to evaluate for the first time the in vivo brightness and spectral characteristics of firefly (Luc2), click beetle green (CBG99), click beetle red 2 (CBR2), and Akaluc luciferases when paired with different d-luciferin (d-LH2) analogues in vivo. Procedures Transduced human embryonic kidney (HEK 293T) cells expressing individual luciferases were analyzed both in vitro and in mice (via subcutaneous injection). Following introduction of the luciferins to cells or animals, the resulting bioluminescence signal and photon emission spectrum were acquired using a sensitive charge-coupled device (CCD) camera equipped with a series of band pass filters and spectral unmixing software. Results Our in vivo analysis resulted in four primary findings: (1) the best substrate for Luc2, CBG99, and CBR2 in terms of signal strength was d-luciferin; (2) the spectra for Luc2 and CBR2 were shifted to a longer wavelength when Akalumine-HCl was the substrate; (3) CBR2 gave the brightest signal with the near-infrared substrate, NH2-NpLH2; and (4) Akaluc was brighter when paired with either CycLuc1 or Akalumine-HCl when paired with d-LH2. Conclusion We believe that the experimental results described here should provide valuable guidance to end users for choosing the correct luciferin/luciferase pairs for a variety of BLI applications.

scholarly journals Infrared Light Emission From Semiconductor Devices

1996 ◽  
Author(s):  
D.L. Barton ◽  
P. Tangyunyong ◽  
J.M. Soden ◽  
A.Y. Liang ◽  
F.J. Low ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Quantum Efficiency ◽  
Near Infrared ◽  
Light Emission ◽  
Photon Emission ◽  
Ccd Camera ◽  
Infrared Light ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Cooled Ccd

Abstract We present results using near-infrared (NIR) cameras to study emission. characteristics of common defect classes for integrated circuits (ICs). The cameras are based on a liquid nitrogen cooled HgCdTe imaging array with high quantum efficiency and very low read noise. The array was developed for infrared astronomy and has high quantum efficiency in the wavelength range from 0.8 to 2.5 µm. For comparison, the same set of samples used to characterize the performance of the NIR camera were studied using a non-intensified, liquidnitrogen- cooled, slow scan CCD camera (with a spectral range from 400-1100 nm). Our results show that the NIR camera images all of the defect classes studied here with much shorter integration times than the cooled CCD, suggesting that photon emission beyond 1 µm is significantly stronger than at shorter wavelengths.

scholarly journals Low cost referenced luminescent imaging of oxygen and pH with a 2-CCD colour near infrared camera

The Analyst ◽  
2014 ◽  
Vol 139 (19) ◽  
pp. 4924-4933 ◽  
Author(s):  
Josef Ehgartner ◽  
Helmar Wiltsche ◽  
Sergey M. Borisov ◽  
Torsten Mayr
Keyword(s):  
Chemical Sensors ◽  
Near Infrared ◽  
Low Cost ◽  
Infrared Camera ◽  
Ccd Camera ◽  
Optical Chemical Sensors ◽  
Set Up

A low cost imaging set-up for NIR-emitting optical chemical sensors for pH and oxygen based on a 2-CCD camera is presented.

Application of time-gated CCD camera with image intensifier in contactless detection of absorbing inclusions buried in optically turbid medium which mimics local changes in oxygenation of the brain tissue

2012 ◽  
Vol 20 (4) ◽  
Author(s):  
P. Sawosz ◽  
N. Zolek ◽  
M. Kacprzak ◽  
R. Maniewski ◽  
A. Liebert
Keyword(s):  
Infrared Spectroscopy ◽  
Brain Tissue ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Image Intensifier ◽  
Ccd Camera ◽  
Turbid Medium ◽  
The Brain ◽  
Contactless Measurements

AbstractThe near infrared spectroscopy may be implemented using various optoelectronic techniques, however, most of them do not allow to carry out measurements at short source-detector separation. We propose a method, based on time-gated intensified CCD camera, which allows for contactless measurements and can be carried out at short source-detector separation. This technique was tested on a phantom with absorbing inclusions buried in an optically turbid medium which mimics local changes in oxygenation of the brain tissue.

Sign in / Sign up

Export Citation Format

Share Document