نتایج جستجو برای: Nb/V dopant
تعداد نتایج: 4550 فیلتر نتایج به سال:
The widespread use of optical 3D measurement in inspection and prototyping continues to demand improved strategies for planning the next best view (NBV). During the scanning process, better viewpoints can be chosen and fewer views need to be taken, if a NBV algorithm is able to use available a-priori information about an object to-be-scanned. The proposed extension to a voxel space based NBV al...
PURPOSE To investigate intercenter agreement of brain volume (change) measurement in multiple sclerosis (MS) using structural image evaluation using normalization of atrophy (SIENA) and the cross-sectional version of SIENA (SIENAX) with additional manual editing to correct for inadequate brain extraction. MATERIALS AND METHODS Baseline and follow-up T1-weighted MR images of 20 MS patients wer...
ÐA solution to the anext best viewo (NBV) problem for automated surface acquisition is presented. The NBV problem is to determine which areas of a scanner's viewing volume need to be scanned to sample all of the visible surfaces of an a priori unknown object and where to position/control the scanner to sample them. It is argued that solutions to the NBV problem are constrained by the other step...
The Next Best View (NBV) in a 3-D object inspection task is a sensor pose which reveals an optimal amount of unknown information about the object under inspection. The goal of a NBV inspection system is to completely inspect an object in the fewest number of views. Our approach to complete this task is to study a volumetric representation of the model after each new view is obtained. Since the ...
Acquiring the complete surface geometry of an object using a range scanner invariably requires that multiple range images be taken of it from different viewpoints. An algorithm is presented which solves the “next best view” (NBV) problem: determine the next position for the range scanner given its previous scans of the object. As part of a complete surface acquisition system the scanner’s next ...
Surveying 3D scenes is a common task in robotics. Systems can do so autonomously by iteratively obtaining measurements. This process of planning observations to improve the model of a scene is called Next Best View (NBV) planning. NBV planning approaches often use either volumetric (e.g., voxel grids) or surface (e.g., triangulated meshes) representations. Volumetric approaches generalise well ...
To find a genetic basis for differential ability to survive severe hemorrhage, we previously showed eightfold differences in survival times among inbred rat strains. We assumed that rat strains had similar normalized blood volumes (NBV; ml/100 g body wt). As NBV might vary among strains and constitute one genetic variable affecting survival time to hemorrhage, in experiment 1 of the current stu...
Academic behaviors in children with convergence insufficiency with and without parent-reported ADHD.
PURPOSE To determine if children with symptomatic Convergence Insufficiency without the presence of parent-reported Attention Deficit Hyperactivity Disorder (ADHD) have higher scores on the academic behavior survey (ABS). METHODS The ABS is a 6-item survey that evaluates parent concern about school performance and the parents' perceptions of the frequency of problem behaviors that their child...
Purpose: To investigate whether MS atrophy can be assessed by SIENA and SIENAX software using other image types from MS research protocols than T1-weighted images without contrast agent, which are not always available. Method: We selected 46 MS patients with identical MRI protocols at two timepoints. We calculated normalized brain volume (NBV) using SIENAX, and percentage brain volume change (P...
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