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parallel LOCAL OPERATIONS FOR A NEW DISTANCE TRANSFORMATION OF A LINE PATTERN AND THEIR applications

IEEE TRANSACTIONS ON systems MAN AND CYBERNETICS 1979年第10期9卷 628-643页

作者： TORIWAKI, J KATO, N FUKUMURA, T NAGOYA UNIV FAC ENGNDEPT INFORMAT SCICHIKUSA KUNAGOYAAICHI 464JAPAN

The distance transformation of a line pattern (DTLP) is proposed and its properties are studied in detail. DTLP is the transformation of a binary line pattern by which the value at each 1-pixel in an input pattern is changed into the distance measured along a line pattern from that pixel to the furthest edge point (type I DTLP) or to the nearest edge point (type ii DTLP). Both types of DTLP are performed by iterative local parallel operations. DTLP is effectively used in the processing of line patterns, such as the elimination or extraction of branches having prespecified features, and the description of the structure of a line pattern. The transformation can also be applied to the texture analysis of line patterns. Several parallel operations for feature extraction related to line patterns based upon the DTLP are given. Experimental results are shown concerning the application of the DTLP to the processing of blood vessel images in chest radiograms and to the texture analysis of photomicrographs of metal pieces. Line pattern analysis based on the DTLP is distinguished from other line pattern processing methods, such as graphical network analysis techniques, in that a two-dimensional line pattern can be processed directly by parallel local operations; and properties based on length as well as topology are effectively used.

关键词： Pattern analysis parallel processing image texture analysis image processing Government Information science Feature extraction Blood vessels Biomedical imaging image analysis

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Microwave holographic imaging-prospects for a real-time camera

Microwave holographic imaging-prospects for a real-time came...

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Real-Time Signal processing ii 1979

作者： Farhat, N.H. University of Pennsylvania Moore School of Electrical Engineering 200 S. 33rd St. PhiladelphiaPA19174 United States

The principles and applications of microwave holography are reviewed to establish the need for a high resolution microwave camera. The realization of such a camera requires solving several problems stemming from: (a) the economical constraints associated with the construction of microwave imaging apertures with large numerical apertures needed for high resolution and (b) the desirability of real-time processing and image retrieval-Recent advances made in the solution of these problems are discussed with attention given to a new method of swept frequency synthesis of an imaging aperture and real-time optical computing of the collected data. (Scanned holography microwave imaging, optical computing, aperture synthesis by frequency diversity, super-resolution). © 1979 SPIE. All rights reserved.

关键词： Optical data processing

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applications of digital processing in computed radiography

Applications of digital processing in computed radiography

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Recent and Future Developments in Medical imaging ii 1979

作者： Amtey, S.R. Morgan, Charles Cohen, Gerald Wagner, L.K. Handel, S. Lester, R.G. Department of Radiology University of Texas Medical School at Houston TX77030 United States

Computed radiography (CR) is a recent development in diagnostic radiology which yields digital radiographs. Digital image enhancement of CR images in the form of smoothing the noise and enhancing the edges of anatomic boundaries has been used as a means to aid the physician in extracting clinical information from the radiograph. Details of the smoothing and edge enhancing function are discussed along with potential diagnostic applications. © 1979 SPIE. All rights reserved.

关键词： image enhancement

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imaging techniques implemented on pipeline minis and an array processor with application to nerve fiber counting

Imaging techniques implemented on pipeline minis and an arra...

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Recent and Future Developments in Medical imaging ii 1979

作者： Rutherford, Harold G. Frykman, Gary K. Yakush, S. Andrew Neilsen, Ivan R. Department of Biomathematics School of Medicine DeAnza Systems Inc. Loma Linda University Loma LindaCA92354 United States Department of Orthopedic Surgery and Rehabilitation School of Medicine Loma Linda University Loma LindaCA92354 United States Department of Biomathematics School of Medicine Loma Linda University Loma LindaCA92354 United States

A pipeline approach to processing of digitized picture data using multiple mini computers and an array processor is presented. Picture size can be up to 512 by 512 pixels. Implementing of many heuristic algorithms such as edge detection, edge enhancing, convolution/correlation of template, peak detection, fast fourier transforms, filtering7 summing two pictures, registration, histogram equalization, thresholding and object counting, is determining" and application is made to a nerve fiber counting project. The goals of the medical project are to provide data to be used in determing optimal surgical repair of injured or severed nerve and time scale as well as a percent of recovery of function following surgical repair. A simple operating system is described to invoke specific routines in the needed order in designated processors. Three approaches are discussed to the problem of image enhancement, pattern recognition and display of a picture consisting of multiple scenes or an object which is captured in the form of multiple "slices" through the object. © 1979 SPIE. All rights reserved.

关键词： image enhancement

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CCD image simulation

CCD image simulation

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Modern Utilization of Infrared Technology ii 1976

作者： Schraibman, H.J. Joseph, J.D. Parsons, J.R. Aerospace Corporation Los AngelesCA90009 United States Honeywell Inc. Systems and Research Center MinneapolisMN55413 United States

Charge Coupled Device (CCD) imaging and processing arrays have shown promise in applications requiring integrated focal plane data processing such as found in certain "smart" sensor and data rate compression designs. This paper presents the results of a computer simulation effort to determine CCD imaging properties in both scanning and area array configurations. The ability to simulate imagery for a variety of array parameters is useful in the design of such imager/processor systems.. Results of the study illustrate effects which are both general characteristics of sampled systems and peculiarities of CCDs. Included are resolution loss using computer generated targets, spurious signals due to the relative position of target and sample points, distortions due to linear and sinusoidal smear, effects of target contrast and CCD noise sources. Both tri-bar and highly over-sampled imagery are used in the demonstrations. © 1976 SPIE. All rights reserved.

关键词： Charge coupled devices

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image synthesis with servoed cameras

Image synthesis with servoed cameras

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Simulators and Simulation ii: Design, applications and Techniques 1975

作者： Slater, Dan Pettus, Michael Magicam Inc. 3100 Airport Avenue Santa MonicaCA90405 United States

With the use of miniature scenes and models, it is possible to synthesize realistic images by combining a scene containing normal size objects with a scene containing miniature objects. The normal size scene is generally termed the foreground and the miniature is termed the background. The resulting synthesized image is generated from the foreground and background scenes using an advanced matting technique. Prior to the development of the Magicam system, camera movement during the matte had little success with holding adequate perspective match in order to achieve realistic composite images.

关键词： Cameras Signal processing Composites imaging systems Control systems Servomechanisms Analog electronics Device simulation Transducers image processing

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Performance of a large screen fluoroscopic imaging system

Performance of a large screen fluoroscopic imaging system

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Application of Optical Instrumentation in Medicine ii 1973

作者： Baily, N.A. Crepeau, R.L. Department of Radiology University of California San DiegoCA United States

In recent years the need for large flat screen fluoroscopic imaging systems has been pointed up by the development and subsequent use of new technologies and new procedures in diagnostic radiology. Videodensitometry, if it is to be extended to clinical applications involving studies of the thorax, kidneys, etc., requires an input screen having an area greater than that of the usual x-ray image intensifier (Ref. 1). A similar requirement exists for optimal use to be made of fluoroscopic tomography (Refs. 2, 3, 4). Further, if these very promising developments are to be made truly quantitative rather than relative, the distortion of the resultant optical intensity due to screen curvature needs to be eliminated. The use of digitized systems with on-line processing and with their capabilities for making precision measurements at the levels of minimum detectability, makes this development even more desirable (Refs. 5, 6). Examples of this need can also be found in the qualitative or imaging aspects of diagnostic radiology.

关键词： Optical amplifiers Fiber amplifiers image intensifiers x-rays Large screens Photography Modulation transfer functions x-ray imaging Diagnostics Radiology

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Data Analysis in Astronomy ii 1

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丛书名： Polymer Science and Technology Series

1000年

作者： V. Gesù L. Scarsi P. Crane J. H. Friedman S. Levialdi

ISBN: (数字)9781461322498

ISBN: (纸本)9780306424731;9781461293170

The ii international workshop on "Data Analysis in Astronomy" was intended to provide an overview on the state of the art and the trend in data analy sis and image processing in the context of their applications in Astronomy. The need for the organization of a second workshop in this subject derived from the steady. growing and development in the field and from the increasing cross-interaction between methods, technology and applications in Astronomy. The book is organized in four main sections: - Data Analysis Methodologies - Data Handling and systems dedicated to Large Experiments - parallel processing - New Developments The topics which have been selected cover some of the main fields in data analysis in Astronomy. Methods that provide a major contribution to the physical interpretation of the data have been considered. Attention has been devoted to the description of the data analysis and handling organization in very large experiments. A review of the current major satellite and ground based experiments has been included. At the end of the book the following 'Panel Discussions' are included: - Data Analysis Trend in Optical and Radio Astronomy - Data Analysis Trend in x and Gamma Astronomy - Problems and Solutions in the Design of Very Large Experiments - Trend on parallel processing algorithms These contributions in a sense summarize the 'live' reaction of the audience to the various topics.

关键词： Astronomy, Astrophysics and Cosmology Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences

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DCMA: Accelerating parallel DMA Transfers with a Multi-Port Direct Cached Memory Access in a Massive-parallel Vector Processor

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ACM Transactions on Architecture and Code Optimization 1000年

作者： Gia Bao Thieu Sven Gesper Guillermo Payá-Vayá Chair for Chip Design for Embedded Computing TU Braunschweig Braunschweig Germany

State-of-the-art applications, such as convolutional neural networks, demand specialized hardware accelerators that address performance and efficiency constraints. An efficient memory hierarchy is mandatory for such hardware systems. While the memory architectures of general-purpose processors (e.g., CPU or GPUs) are based on cache systems, dedicated accelerators have mostly adopted the DMA (Direct Memory Access) concept due to the application field of image processing. DMA features like 2D data transfers or data padding can optimize the memory accesses of image processing. However, DMA lacks the capability to exploit temporal and spatial data reuse, a feature common in cache systems, particularly when multiple DMAs operate in parallel. This paper proposes a novel Direct Cached Memory Access (DCMA) architecture, combining both DMA and cache methodologies and their respective advantages. Optimized for image-based AI algorithms, the DCMA architecture facilitates enhanced memory access by integrating multiple, parallel DMA ports with caching capabilities. This design allows for efficient data reuse and parallel memory access. Optimal parameters for the DCMA are determined through a comprehensive design space exploration. The DCMA is evaluated on a state-of-the-art xilinx UltraScale+ FPGA board coupled with a massive-parallel vertical vector co-processor, called V2PRO. The results show the mitigation of the vector processor’s memory bottleneck. By using the proposed DCMA, speedups of up to x17 for the ResNet-50 CNN can be achieved.

关键词： Cache DMA Hybrid DMA-Cache Vertical Vector Processor Memory Hierarchy Machine Learning

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Advances in Visual Computing 1

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丛书名： Lecture Notes in Computer Science

1000年

作者： George Bebis Richard Boyle Bahram Parvin Darko Koracin Charless Fowlkes Sen Wang Min-Hyung Choi Stephan Mantler Jürgen Schulze Daniel Acevedo Klaus Mueller Michael Papka

ISBN: (数字)9783642331794

ISBN: (纸本)9783642331787

The two volume set LNCS 7431 and 7432 constitutes the refereed proceedings of the 8th International Symposium on Visual Computing, ISVC 2012, held in Rethymnon, Crete, Greece, in July 2012. The 68 revised full papers and 35 poster papers presented together with 45 special track papers were carefully reviewed and selected from more than 200 submissions. The papers are organized in topical sections: Part I (LNCS 7431) comprises computational bioimaging; computer graphics; calibration and 3D vision; object recognition; illumination, modeling, and segmentation; visualization; 3D mapping, modeling and surface reconstruction; motion and tracking; optimization for vision, graphics, and medical imaging, HCI and recognition. Part ii (LNCS 7432) comprises topics such as unconstrained biometrics: advances and trends; intelligent environments: algorithms and applications; applications; virtual reality; face processing and recognition.

关键词： Pattern Recognition Computer Graphics image processing and Computer Vision User Interfaces and Human Computer Interaction Information systems applications (incl. Internet) Computational Biology/Bioinformatics

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