Detection Trials for Insect Damage of Crops by UAV with Thermal Camera

Abstract This paper presents a non-line-of-sight technique to estimate the position and temperature of an occluded object from a camera via reflection on a wall. Because objects with heat emit far infrared light with respect to their temperature, positions and temperatures are estimated from reflections on a wall. A key idea is that light paths from a hidden object to the camera depend on the position of the hidden object. The position of the object is recovered from the angular distribution of specular and diffuse reflection component, and the temperature of the heat source is recovered from the estimated position and the intensity of reflection. The effectiveness of our method is evaluated by conducting real-world experiments, showing that the position and the temperature of the hidden object can be recovered from the reflection destination of the wall by using a conventional thermal camera.

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

Volume 4: Turbo Expo 2007, Parts A and B ◽

10.1115/gt2007-27299 ◽

2007 ◽

Cited By ~ 1

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.

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Avian Fruit Removal: Effects of Fruit Variation, Crop Size, and Insect Damage

Ecology ◽

10.2307/1939863 ◽

1987 ◽

Vol 68 (6) ◽

pp. 1711-1723 ◽

Cited By ~ 85

Author(s):

Pedro Jordano

Keyword(s):

Insect Damage ◽

Fruit Removal ◽

Crop Size

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Seed cone traits and insect damage in Tsuga canadensis (Pinaceae)

Canadian Journal of Forest Research ◽

10.1139/x03-190 ◽

2004 ◽

Vol 34 (1) ◽

pp. 261-265 ◽

Cited By ~ 1

Author(s):

Jean J Turgeon ◽

Chuck Jones ◽

M Isabel Bellocq

Keyword(s):

Seed Production ◽

Tsuga Canadensis ◽

Insect Damage ◽

First Report ◽

Seed Cone ◽

Length Width ◽

Maximum Proportion ◽

Sterile Seed ◽

The Impact ◽

Filled Seeds

We measured seed cones of Tsuga canadensis (L.) Carrière, assessed seed potential (number of fertile scales × 2) and seed efficiency (number of filled seeds/seed potential), and estimated the impact of Eupithecia mutata Pearsall (Lepidoptera: Geometridae) and Megastigmus hoffmeyeri Walley (Hymenoptera: Torymidae) on seed production. Mean length, width, and volume of healthy cones varied little among sites from Ontario. Cones had about 28 scales; 13 were sterile. Seed potential and seed efficiency differed among sites, ranging from 25 to 31 ovules and 24% to 72%, respectively. The number of scales (both sterile and fertile) increased with cone volume, but the proportion of fertile scales was independent of cone size. The maximum proportion of cones infested by E. mutata was 21%. On average, each larva destroyed >90% of the filled seeds from each cone, thus from a practical perspective, the proportion of T. canadensis seeds destroyed per site was equivalent to the proportion of seed cones infested. The proportion of cones infested by M. hoffmeyeri ranged from 9% to 40%, but the proportion of seeds destroyed per site (range: 1.1%6.1%) was much lower than that of E. mutata. The maximum number of M. hoffmeyeri-infested seeds per cone was seven. To our knowledge, this is the first report documenting cone traits of T. canadensis and the impact of E. mutata and M. hoffmeyeri.

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A Touchless Tool to Improve Gated Radiation Therapy: Thermal Camera Based Breathing Phase Monitoring

International Journal of Radiation Oncology*Biology*Physics ◽

10.1016/j.ijrobp.2015.07.1968 ◽

2015 ◽

Vol 93 (3) ◽

pp. E555

Author(s):

X. Zhu ◽

J. Cai ◽

J. Lian ◽

J. Driewer ◽

S.X. Chang ◽

...

Keyword(s):

Radiation Therapy ◽

Thermal Camera

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Bt-Cry3Aa transgene expression reduces insect damage and improves growth in field-grown hybrid poplar

Canadian Journal of Forest Research ◽

10.1139/cjfr-2013-0270 ◽

2014 ◽

Vol 44 (1) ◽

pp. 28-35 ◽

Cited By ~ 15

Author(s):

Amy L. Klocko ◽

Richard Meilan ◽

Rosalind R. James ◽

Venkatesh Viswanath ◽

Cathleen Ma ◽

...

Keyword(s):

Large Scale ◽

Populus Deltoides ◽

Integrated Management ◽

Populus Trichocarpa ◽

Hybrid Poplar ◽

Volume Growth ◽

Field Trials ◽

Leaf Beetle ◽

Insect Damage ◽

Beetle Damage

The stability and value of transgenic pest resistance for promoting tree growth are poorly understood. These data are essential for determining if such trees could be beneficial to commercial growers in the face of substantial regulatory and marketing costs. We investigated growth and insect resistance in hybrid poplar expressing the cry3Aa transgene in two field trials. An initial screening of 502 trees comprising 51 transgenic gene insertion events in four clonal backgrounds (Populus trichocarpa × Populus deltoides, clones 24-305, 50-197, and 198-434; and P. deltoides × Populus nigra, clone OP-367) resulted in transgenic trees with greatly reduced insect damage. A large-scale study of 402 trees from nine insertion events in clone OP-367, conducted over two growing seasons, demonstrated reduced tree damage and significantly increased volume growth (mean 14%). Quantification of Cry3Aa protein indicated high levels of expression, which continued after 14 years of annual or biannual coppice in a clone bank. With integrated management, the cry3Aa gene appears to be a highly effective tool for protecting against leaf beetle damage and improving yields from poplar plantations.

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Condition Monitoring of Tank Bore Surface Characteristics by an Integrated Measurement Technique

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.13.2.20 ◽

2021 ◽

Vol 13 (2) ◽

Author(s):

Ramesh Shanmugam ◽

D. Dinakaran ◽

D.G. Harris Samuel

Keyword(s):

Real Time ◽

Condition Monitoring ◽

Measurement Technique ◽

Great Degree ◽

Surface Characteristics ◽

Integrated Approach ◽

Thermal Camera ◽

Monitoring Method ◽

Measuring Surface ◽

Combat Effectiveness

Accuracy and safety of tank guns are dependent a great degree on the condition of its gun bore. Many parameters affect accuracy and safety and have strong and complex interdependencies. While it is extremely difficult to monitor all these parameters during battle conditions, it is also essential to enhance the accuracy of the gun by measuring and compensating these parameters. Among all, bore wear and bore centreline are predominant factors. The surface characteristics of the bore also are indicative of potential accidents/deterioration, which should be monitored continuously. Hence, condition monitoring of tank gun bore characteristics in near real-time is an impending need with huge potential for enhancing the combat effectiveness of tank formations. This paper analyses various bore parameters affecting accuracy and safety and proposes a comprehensive condition monitoring method that uses vision camera, thermal camera and mechanical profiler. This integrated approach provides enhanced accuracy in measuring surface characteristics of tank bore that has been partially validated.

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