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181.
Rogowska J Bryant CM Brezinski ME 《Journal of the Optical Society of America. A, Optics, image science, and vision》2003,20(2):357-367
We describe a new semiautomatic image processing method for detecting the cartilage boundaries in optical coherence tomography (OCT). In particular, we focus on rabbit cartilage since this is an important animal model for testing both chondroprotective agents and cartilage repair techniques. The novel boundary-detection system presented here consists of (1) an adaptive filtering technique for image enhancement and speckle reduction, (2) edge detection, and (3) edge linking by graph searching. The procedure requires several steps and can be automated. The quantitative measurements of cartilage thickness on OCT images correlated well with measurements from histology. 相似文献
182.
Peizhao Hu Wee Lum Tan Ryan Wishart Marius Portmann Jadwiga Indulska 《Multimedia Systems》2010,16(4-5):243-254
The major surveillance camera manufacturers have begun incorporating wireless networking functionality into their products to enable wireless access. However, the video feeds from such cameras can only be accessed within the transmission range of the cameras. These cameras must be connected to backbone infrastructure in order to access them from more than one hop away. This network infrastructure is both time-consuming and expensive to install, making it impractical in many rapid deployment situations (e.g., to provide temporary surveillance at a crime scene). To overcome this problem, we propose the MeshVision system that incorporates wireless mesh network functionality directly into the cameras. Video streams can be pulled from any camera within a network of MeshVision cameras, irrespective of how many hops away that camera is. To manage the trade-off between video stream quality and the number of video streams that could be concurrently accessed over the network, MeshVision uses a bandwidth adaptation mechanism. This mechanism monitors the wireless network looking for drops in link quality or signs of congestion and adjusts the quality of existing video streams in order to reduce that congestion. A significant benefit of the approach is that it is of low cost, requiring only a software upgrade of the cameras. 相似文献
183.
Laska Aleksandra Szkodo Marek Cavaliere Pasquale Moszczyńska Dorota Mizera Jarosław 《Metallurgical and Materials Transactions A》2023,54(1):211-225
Metallurgical and Materials Transactions A - The Friction Stir Welding (FSW) method was employed to join AA6082 sheets. The welds were produced with different tool traverse speed (200 and... 相似文献
184.
Sara Castro-Barquero Rosa Casas Eric B. Rimm Anna Tresserra-Rimbau Dora Romaguera J. Alfredo Martínez Jordi Salas-Salvadó Miguel A. Martínez-González Josep Vidal Miguel Ruiz-Canela Jadwiga Konieczna Emilio Sacanella Jesús Francisco García-Gavilán Montse Fitó Ana García-Arellano Ramon Estruch 《Molecular nutrition & food research》2023,67(4):2200264
185.
Jadwiga Frelek Wojciech Szczepek Wolfgang Voelter 《Advanced Synthesis \u0026amp; Catalysis》1997,339(1):135-139
Bidentate complexes between [Mo2(OAc)4] and 1,3-diols (1–16) show several CD bands in the 250–600 nm range. A previously published sector rule for the prediction of the sign of band II at ca. 400 nm for rigid cyclic 1,3-diols is extended to open-chain (7–12) as well as “semi-rigid” 1,3-glycols ( 1–6 and 14–16 ). Their absolute configuration can be correlated with the sign of this CD band. This in situ complexation needs minute amounts of substance and therefore is a very convenient tool for the determination of the absolute configuration of such class of compounds. 相似文献