نتایج جستجو برای: thermal infrared imaging
تعداد نتایج: 749235 فیلتر نتایج به سال:
Review of the effectiveness of infrared thermal imaging (thermography) for population screening and diagnostic testing of breast cancer Review of the effectiveness of infrared thermal imaging (thermography) for population screening and diagnostic testing of breast cancer. Christchurch Hospital) who provided valuable advice and input. We are grateful to the authors who provided assistance in the...
Thermal imaging with an infrared camera can be used to view the location and intensity of heat sources in space and time. In a thermal conductor, thermal diffusion blurs out those heat sources. Knowledge of the physics of thermal diffusion can be used to enhance the spatial and temporal resolution of thermal images. In two dimensions, quantitative reconstruction of the heat source intensity is ...
High-resolution dynamic infrared (DIR) imaging provides intraoperative real-time physiological, anatomical, and pathological information; however, DIR imaging has rarely been used in neurosurgical patients. The authors report on their initial experience with intraoperative DIR imaging in 30 such patients. A novel, long-wave (8-10 microm), narrow-band, focal-plane-array infrared photodetector wa...
In recent years plasma-sprayed coatings and polymer coatings have found wide application in manufacturing. Although the quality of the coatings improved over the years, there is a need for reliable NDE techniques to assess the quality and test the integrity of these coatings. Most existing techniques are not suitable for real-time applications. The introduction of synchronous thermal wave video...
Carbon nanotubes (CNTs) have shown great potential as sensing component in the electrochemical field effect transistor and optical sensors, because of their extraordinary one-dimensional electronic structure, thermal conductivity, and tunable and stable near-infrared emission. However, the insolubility of CNTs due to strong van der Waals interactions limits their use in the field of nanotechnol...
INTRODUCTION Infrared thermal imaging is based on perfusion changes reflected by skin temperature variations. It is an established non-invasive diagnostic method within vascular surgery, with applications such as peripheral arterial disease assessment and prevention of diabetic foot complications. However, owing to hardware limitations or lack of resources, it is not yet widely used in clinical...
In the context of infrared thermographic NDT, the whole acquisition chain is first reviewed including the required pre-processing stages needed to restore images from degradations such as vignetting, camera noise and dead pixels. Polynomial conversion to temperature values is next. Secondly, the processing steps are discussed following two main directions: qualitative imaging which requires ima...
We present selected results from our ongoing investigation of high– mass star–forming regions which are based on infrared observations with ESO's ISAAC camera at the 8.2-m ANTU VLT telescope. Although these young stellar objects comprise a high degree of complexity, our data enable us to disentangle these crowded regions. By means of broad– and narrow–band imaging between 1–5 micron we performe...
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