The matrix array of ultrasound transducer assemblies can be assembled into a variety of form factors. Virtual elements located in gaps between transducer assemblies may be defined. Synthesized receive signals may be generated for these virtual elements....
A parametric model was developed for digital mammography to evaluate optimization of x... PJ Martin,MP André,BA Spivey,... - 《Ultrasonic Imaging》 被引量: 3发表: 1993年 Passive metamaterial-based acoustic holograms in ultrasound energy transfer systems transmitter is used to power multiple ...
An interesting observation throughout corneal development was the potential association of the collagen fibrils with the cell membranes and cell extensions, which has been previously seen in the avian cornea16. From the initial sign of collagen fibril deposition, bundles of collagen fibrils associated a...
In subject area: Computer Science A 'Matrix Approach' is a method used in the analysis of systems, such as electrostatic and magnetic lenses, which allows for efficient synthesis and enables a useful comparison with optical lenses. AI generated definition based on: Advances in Imaging and Electron...
A large class of digital imaging systems can be modeled mathematically by linear, continuous-to-discrete operators. In this dissertation, we present the th... HC Gifford,HC Gifford 被引量: 9发表: 1997年 Characterization of Tomographic Sampling in Hybrid PET Using the Fourier Crosstalk Matrix. In...
In addition, it enables observation of organ or patient motion during a single treatment. Analysis of these images at high speed will be an interesting new area of research. 展开 关键词: Radiotherapy Portal imaging Digital imaging Ionisation chamber Treatment verification ...
Stochastic Digital Control System Techniques Tapio Westerlund, ... Anders Brink, in Control and Dynamic Systems, 1996 Appendix A Let S be a real symmetric positive definite matrix and H be some non-zero real skew-symmetric matrix (H = − HT). Here we show that (A.1)|S+ϵ⋅H|>...
Single sensor digital color cameras capture only one of the three primary colors at each pixel and a process called color demosaicking (CDM) is used to rec... Lei Zhang, Xiaolin Wu, Antoni Buades, and Xin Li - 《Journal of Electronic Imaging》 被引量: 160发表: 2011年 Super-Resolution us...
For a two-dimensional digital image f(x,y) with the size of M × N, the gray value cooccurrence matrix satisfying a certain spatial relationship is: (5.7)P(i,j)=g{(x1,y1),(x2,y2)∈M×N|f(x1,y1)=i,f(x2,y2)=j} where g(x) is the number of elements in set x; P is...
Recently, image categorization has been an active research topic due to the urgent need to retrieve and browse digital images via semantic keywords. This paper for-mulates image categorization as a multi-label classification problem using recent advances in matrix completion. Under this setting, class...