Application of Two Unknown Quantities and Three Points Interpolation in the Atmospheric Transmittance of Infrared Radiation

2013 ◽  
Vol 756-759 ◽  
pp. 3665-3668
Author(s):  
Hong Hui Sun ◽  
Min Li ◽  
Jian She Song
Keyword(s):  
Infrared Radiation ◽  
Interpolation Method ◽  
Experimental Results ◽  
Engineering And Technology ◽  
Atmospheric Transmittance

The atmospheric transmittance of infrared radiation is the important parameter on the studies of infrared radiation, the Computation of atmospheric transmittance is professional and complicated and it is inconvenient for the application of engineering and technology. In order to gained the atmospheric transmittance of infrared radiation rapidly when the height of infrared apparatus place and the down range distance between infrared apparatus and infrared object are changed, Lagranges two unknown quantities and three points interpolation is used to computer the interpolations of the atmospheric transmittance of infrared radiation by the MODTRAN software, then the available data of atmospheric transmittance are gained. The experimental results show the interpolation method is effective and valuable in engineering applation.

GENERATION AND PROPERTIES OF INFRARED RADIATION

2019 ◽  
Vol 6 (2) ◽  
pp. 101-137
Author(s):  
RUSTAM KHAKIMOVICH RAKHIMOV
Keyword(s):  
Electromagnetic Radiation ◽  
Infrared Radiation ◽  
Radiation Spectrum ◽  
Laws Of Nature ◽  
Primary Source ◽  
Ceramic Materials ◽  
Experimental Results ◽  
Ir Radiation ◽  
Scattering Of Light

The article presents the main basic laws of nature and modern theories of the nature of electromagnetic radiation, its generation, characteristics, and laws of reflection, absorption and scattering of light. The principle of transformation of the radiation spectrum of the primary source using the developed ceramic materials are shown, as well as experimental results of the interaction of IR radiation with matter and various mechanisms of influence on various objects and processes are described.

Experimental Studies on Cooling Effectiveness of the Double-Decker Air Jet Impingement With Film Outflow

2007 ◽  
Author(s):  
Junkui Mao ◽  
Wen Guo ◽  
Zhenxiong Liu ◽  
Jun Zeng
Keyword(s):  
Infrared Radiation ◽  
Experimental Studies ◽  
Jet Impingement ◽  
Experimental Results ◽  
Thermal Camera ◽  
Local Cooling ◽  
Cooling Effectiveness ◽  
Air Jet ◽  
Double Decker ◽  
Wide Range

Experiments were carried out to investigate the cooling effectiveness of a lamellar double-decker impingement/effusion structure. Infrared radiation (I.R.) thermal camera was used to measure the temperature on the outside surface of the lamellar double-decker. Experimental results were obtained for a wide range of governing parameters (blowing rate M (0.0017∼0.0066), the ratio of the jet impingement distance to the diameter of film hole H/D (0.5∼1.25), the ratio of the distance between the jet hole and film hole to the diameter of the film hole P/D (0, 3, 4), and the material of double-decker (Steel and Copper)). It was observed that the local cooling effectiveness η varies with all these parameters in a complicated way. All the results show that higher cooling effectiveness η is achieved in larger blowing rate cases. A certain range of H/D and P/D can be designed to result in the maximum cooling effectiveness η. And η is less sensitive to the material type compared with those parameters such as H/D, M and P/D.

Image Reconstruction on Quincunx Patterned Green Channel

2013 ◽  
Vol 717 ◽  
pp. 493-496
Author(s):  
Gwang Gil Jeon
Keyword(s):  
Image Reconstruction ◽  
Least Squares ◽  
Least Squares Method ◽  
Interpolation Method ◽  
Experimental Results ◽  
Color Filter ◽  
Image Artifacts ◽  
Green Channel ◽  
Filter Array ◽  
Single Sensor

This paper addresses the issue of the quincunx patterned green channel interpolation method that is obtained by single sensor cameras. Our goal is to reconstruct the green channel in Bayer color filter array (CFA) data. We present a new filter-based method for the reduction of image artifacts in green channel. To reconstruct green channel, we trained a filter using least squares method. Experimental results confirm the effectiveness of the proposed method. Compared to other bilinear and bicubic filters, the improvement in quality has been achieved.

Study of Flying Projectile’s Properties of Infrared Radiation

2012 ◽  
Vol 268-270 ◽  
pp. 1648-1653
Author(s):  
Yue Ying Lv ◽  
Ying An
Keyword(s):  
Surface Temperature ◽  
Infrared Radiation ◽  
Attenuation Factor ◽  
Radiation Energy ◽  
Light Level ◽  
Detection Distance ◽  
Low Light ◽  
Linear Change ◽  
Radiation Properties ◽  
Atmospheric Transmittance

In order to solve the problem that the optic-electric detecting target board fails to work at nights or under low light level，it has studied the flying projectile’s properties of infrared radiation and the radiation attenuation properties of the flying projectile in the atmosphere. Through establishing the differential equations, the projectile’s surface temperature is obtained to calculate the flying projectile’s infrared radiation properties , according to atmosphere’s transmitting properties，the calculation method of atmospheric transmittance rate. The infrared radiation properties of three typical projectile are simulated by utilizing MATAB. The simulation result shows that the surface temperature of the flying projectile has a linear change with its velocity; the atmospheric transmittance rate is inversely proportional to the detection distance; Once the atmospheric attenuation factor is different, then the radiation energy received by the detector will be different.

Infrared radiation measurement based on proportional corrected atmospheric transmittance

2012 ◽  
Vol 20 (7) ◽  
pp. 1626-1635 ◽  
Author(s):  
杨词银 YANG Ci-yin ◽  
张建萍 ZHANG Jian-ping ◽  
曹立华 CAO Li-hua
Keyword(s):  
Infrared Radiation ◽  
Radiation Measurement ◽  
Atmospheric Transmittance

scholarly journals Study on Extraction Methods for Different Components in a Carbonate Digital Core

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Xiaoling Xiao ◽  
Jiarui Zhang ◽  
Xinyu Li ◽  
Jing Zhang ◽  
Xiang Zhang
Keyword(s):  
Interpolation Method ◽  
Three Dimensional ◽  
Image Inpainting ◽  
Rock Physics ◽  
Extraction Methods ◽  
Difficult Problem ◽  
Experimental Results ◽  
Carbonate Reservoirs ◽  
Basic Rock ◽  
Digital Core

It is difficult to carry out petrophysical experiments because of the serious damage caused to cores in the development of fractures and pores in carbonate reservoirs. The development of a three-dimensional digital core in carbonate reservoirs has become a hot topic in rock physics research. Compared with the three-dimensional digital core, including basic rock skeletons and pores in sandstone reservoirs, carbonate reservoirs also include secondary structures such as microfractures. The carbonate contains different components, and extracting these components is a very difficult problem. The resolution on the electrical image log image is high, which can clearly reflect the macrocomponents in various reservoirs. There are some blank areas between electrodes on the electrical image log, which affects the extraction of components in a three-dimensional digital core. Aiming at the serious heterogeneities in the carbonate reservoirs and affecting image inpainting on the electrical image log image, a new method of image inpainting based on a combination of multipoint geostatistics and an interpolation method is put forward. The experimental results show that this method generates faster and better full-bore images than other methods. Due to the multipeak histogram, the maximum interclass variance in the two times method is proposed to extract macrocomponents such as basic rock skeletons, pores, and connected parts. The microfractures can be extracted from the CT scanned images by using image segmentation from the combination of the watershed and OTSU methods. The experimental results prove that using extraction methods for different components enables better results to be obtained.

scholarly journals Security Enhancement in Cloud Environment using Secure Secret Key Sharing

2020 ◽  
Vol 16 (4) ◽  
pp. 296-307
Author(s):  
Sakshi Chhabra ◽  
Ashutosh Kumar Singh
Keyword(s):  
Private Information ◽  
Key Management ◽  
Interpolation Method ◽  
Experimental Results ◽  
Secret Key ◽  
Sensitive Data ◽  
Time Consumption ◽  
Security Enhancement ◽  
Encryption Decryption ◽  
And Performance

Securing the data in distributed cloud system is considered one of the major concern for the cloud customers who faces security risks. The data leakage or data tampering are widely used by attackers to extract the private information of other users who shares the confidential data through virtualization. This paper presents Secure Secret Sharing (SSS) technique which is being recognized as one of the leading method to secure the sensitive data. It shares encrypted data over cloud and generated secret key is split into different parts distributed to qualified participants (Qn) only which is analyzed by malicious checkers. It verifies the clients based on their previous performances, whether these users proved to be authorized participant or not. The key computation is evaluated by the Key handler (KH) called trusted party which manages authorized control list, encryption/decryption and reconstruction of key shares. The Lagrange’s interpolation method is used to reconstruct the secret from shares. The experimental results shows that the proposed secure data sharing algorithm not only provides excellent security and performance, but also achieves better key management and data confidentiality than previous countermeasures. It improves the security by using secure VM placement and evaluated based on time consumption and probability computation to prove the efficacy of our algorithm. Experiments are performed on cloudsim based on following parameters i.e. time computation of key generation; response time and encryption/decryption. The experimental results demonstrate that this method can effectively reduce the risks and improves the security and time consumption upto 27.81% and 43.61% over existing algorithms.

Image Interpolation Based on Level-Sets Motion with Artificial Speed Field

2013 ◽  
Vol 718-720 ◽  
pp. 2131-2135
Author(s):  
Ming Gang Jing ◽  
Ji Tao Wu
Keyword(s):  
Image Quality ◽  
Level Sets ◽  
Interpolation Method ◽  
Image Interpolation ◽  
Experimental Results ◽  
New Method ◽  
Subjective Image Quality ◽  
Magnification Factors ◽  
Shock Filter

This paper presents a novel image interpolation method based on level-sets motion (LSM). The proposed method computes the speed field of level-sets adaptively, according to which the contours in images evolve at proper speeds. Thus it can produce images with less jagged edges stably and fast. To suppress blurring artifacts, the shock filter is used to get sharper edges in images. And the new method can interpolate images with arbitrary magnification factors (MFs). Experimental results have verified the effectiveness of the proposed method in terms of both objective and subjective image quality.

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