Digital image processing and communication system IS-10

In recent years, with the development of digital technology, digital image processing has been widely and deeply applied in the field of computer graphics. Digital image processing system is a complex real-time system, it from the camera, fax machine and other scanning equipment to obtain image information, after digital transformation, digital image information coding, filtering, enhancement, recovery, compression, storage and other processing, finally generate visual image. This design uses TMS320C6748 as the core processor of the system, SAA7113 as the video decoding chip of the system, CPLD as the sampling controller, DDR2 chip as the external expansion memory. The ROM expansion uses NAND flash memory chip. On the basis of hardware design, combined with software algorithm to complete image processing. The system can be used in information communication, image recognition, news scene and other fields of image processing and transmission. This paper analyzes the hardware structure and data processing algorithm of the system in detail. The experimental results show that the system can not only obtain higher compression ratio, but also reduce the distortion of the reconstructed image. The image processing system has certain practicability.

This paper is dedicated to the transient liquid crystal technique measurements for multiple view access by using a novel digital recording and image processing system. The transient liquid crystal technique is widely used for heat transfer investigations in turbomachinery. It has been applied in our laboratory in several test facilities such as a linear cascade for external film cooling measurements or on a ribbed squared duct for internal cooling measurements. The data analysis as well as the measurement equipment is described, with a special focus on the newly developed computerized image processing system suitable to capture the liquid crystal signal.

A liquid is subjected to sound of high intensity to generate a cloud of cavities or bubbles. The correlation between the sound output from the bubble cloud, which follows a subharmonic route to chaos with a low-dimensional strange attractor, and its spatial dynamics is investigated. Several approaches are used. In a light transmission experiment the light modulation resulting from the spatial dynamics gives an integrated measure similar to the acoustic output from a hydrophone. High speed photographic cinematography and, in particular, methods of high speed holographic cinematography are used and developed to capture the spatial dynamics of the three-dimensional bubble pattern, a filamentary structure resembling Lichtenberg figures. The series of three-dimensional images obtained via holography is digitized and analyzed via a transputer-based digital image processing system. First results show strong correlations among the behavior of individual bubbles and indicate a highly cooperative system. The method of high speed holographic cinematography developed together with a digital holographic image processing system will also be of use for the investigation of other complex space-time systems, for example, the Rayleigh-Bénard and Taylor-Couette systems, and is scheduled for fully three-dimensional turbulence studies.

In recent years many of the airborne sensor technology development goals of the reconnaissance and surveillance communities have been either realized or about to come `on stream.' The challenge now is to get that sensor information to the warfighter in a comprehensive and timely manner. In this paper we will look at the communications architectures that will bring this information to the Navy's Battle Group Commander and enable him to fully coordinate sensor-to- shooter, theater based mission planning. The Common High Bandwidth Data Link-Surface Terminal (CHBDL-ST), which successfully completed TECHEVAL/OPEVAL aboard the USS Kennedy last year, will be central to that architecture. CHBDL-STs installed on carriers and amphibians receive data over the Common Data Link (CDL) from the airborne sensors providing digital imagery, signal intelligence (SIGINT), infrared and radar. At present, CHBDL-ST supports the Advanced Tactical Airborne Reconnaissance System and the Battle Group Passive Horizon Extension System which provides the Carrier Battle Group (CVBG) electro-optical and infrared (EO/IR) and SIGINT data respectively. Imagery from the airborne platform will be passed from CHBDL-ST to the Joint Services Image Processing System-Navy. Via CDL, through the CHBDL-ST, other manned and unmanned airborne platforms will be able to transmit their sensor data down to the CVBG. With the CHBDL-ST as the cornerstone of its reconnaissance/surveillance communications architecture, the CVBG will have access to the appropriate sensor data from organic and non-organic (i.e., joint) sources required to complete a theater wide battle picture. The paper will explore how CHBDL-ST, as the cornerstone of the CVBG's reconnaissance/surveillance communications architecture, will (1) receive data from the UAV's; (2) improve the time to receive and process imagery; (3) impact the dissemination of intelligence data fleet wide; (4) provide a battle picture for the forward deployed warrior; and (5) provide support for the forward deployed warrior.

A reliable and autonomic seed classification technique can overcome the issues of manual seed classification. It is a highly practical and economically vital need of the agriculture industry. The current techniques of machine learning and artificial intelligence allows the researchers to design a new data mining mechanism with higher accuracy. In this article, a new adaptive technique has been proposed using a digital image processing system (DIPS) and fuzzy clustered random forest (FCRF) techniques. The DIPS is used to extract the parameters such as area, perimeter, height, width, length of the groove and asymmetry coefficient. Further, FCRF model is applied to classify the wheat seeds based on these parameters in a time-efficient manner. The devised approach helps the agriculture industry for seed classification, separation of damaged seeds and controlling the quality of seeds based on grading policy. The experiment result demonstrates that the accuracy of the proposed technique is better than the existing wheat seed classification algorithm. The average performance gain of the proposed technique is up to 97.7%.

Orthographic approach to representing 3-D images and interpolating light rays for 3-D image communication and virtual environment

Recent advances in digital imaging technology combined with the next generation digital wireless communication has great potential to transform the paradigm for how humans will communicate visual information with one another in the next century. The first major change is that the model of one message from a single source to many clients (mass broadcasting) will be replaced by a model of many messages from multiple sources to many receivers (peer to peer). A second major change is that the model will move from a passive client, which only receives messages to an interactive client able to respond and even direct the information content to itself. This will have great impact in the experience of visual communication in the next decade. In this paper, we shall outline some of the key technological challenges in terms of bandwidth, processing power, data rate, data sizes and human factors required to influence this paradigm shift resulting from the merger of digital imaging and digital wireless communication technologies.

Face detection is a grave concern in digital image processing and automatic face recognition system. This research work proposed a complete mechanism for face detection using R, G, B color segmentation and search optimization scheme with Genetic Algorithm, also refer a discrete technique that is appropriate for combinatorial problems. In this paper we tried to build an R, G, B color range that will shelter a skin part from an image and handover a best fitted solution as fitness function for GA to perform further operation to detect images in complex background. In this paper our tryout are to enrich detection accuracy in lesser computational time. The evaluation shows that this algorithm is capable to detect the face from complex background conditions and for side faces too. This algorithm is tested on a wide number of test images. All the simulation has been done on MATLAB.

Digitally enhanced type-I magnetic contrast in SEM as a method of domain investigation

Com o advento dos equipamentos digitais de diagnóstico médico, houve uma diminuição do uso de filmes emradiologia. Em contrapartida, o gerenciamento de imagens médicas (IMs) digitalizadas tornou-se uma tarefa crítica. Neste trabalho, apresentamos um protótipo, com base em tecnologias worldwide web (www), que realiza essa função. Ele contempla um servidor de IMs que possibilita a pesquisa e a recuperação dessas imagens armazenadas como arquivos digital imaging and communications in medicine (Dicom), além de receber requisições de serviços de equipamento sem aplicações compatíveis com esse padrão. As IMs podem ser visualizadas e manipuladas dentro de um navegador web (o cliente da aplicação) por meio de uma aplicação Java (applet). Tal abordagem oferece algumas vantagens em relação aos tradicionais sistemas de arquivamento e comunicação de imagens (picture archiving and communication systems [Pacs]), entre as quais a independência de plataformas e facilidade de instalação e de manutenção, a distribuição de dados e a integração com outros sistemas, dentro ou fora da instituição. Basta que se utilize a implementação de políticas de segurança. A simplicidade e a flexibilidade das tecnologias web viabilizam o uso dessa aplicação que provê recursos tanto para o gerenciamento quanto para a manipulação de IMs.

Observing a thick object by a x-ray microscope with a high spatial resolution, only a thin plane of this object will be in focus; the other object planes are defocused. In-creasing the depth of field by decreasing the aperture results in a reduced spatial resolution. The conflicting requirements for high spatial resolution and large depth of field are a fundamental problem in imaging microscopy. Therefore, the extension of depth of focus by digital image processing is of interest, especially in high resolution microscopy. In this paper, the local variance weighted averaging (LVWA) method, developed by S. A. Sugimoto and Y. Ichioka /1/ and its application at the Gottingen x-ray microscope is presented.

Non-Random Spatial Distribution of Intermembraneous Particles in Red Blood Cell Membrane

Keywords: wireless networking, Common Data Link, network centric, unmanned aerial vehicle, ATM, Quality of Service,TCP/IP 1. INTRODUCTION L-3 Communication Systems-West (L-3 CSW) has fielded a series of high speed wireless, wideband, data links suitable foruse in warfare. These data links offer high bandwidth and robust operation in hostile environments. As the United States andher allies rely further on fast decision loops and comprehensive intelligence to multiply their force ’s effectiveness, these datalinks become increasingly valuable.An architecture with high bandwidth capacity allows the warfighter to separate the strike forces from the sensors, yet stillallow the combined forces to achieve very tight decision loops. For example, a strike fighter force must be provided the highresolution target data (both primary and secondary targets) before the mission and use it at their base for mission planning.Conversely, a force re-targeting and attacking targets of opportunity must carry on board sensors to allow fast targetrecognition and acquisition when the strike orders change during the mission. With wireless, high bandwidth data links to astrike fighter force, the updated location and imagery can be passed to the cockpit in flight, reducing reaction time and bette rutilizing resources.Concepts like Network Centric Warfare (NCW) allow industrialized western nations to reap the advantages of ourinformation dominance. Information dominance must be based on “communications dominance ”. NCW requires a highlyinterconnected chain of command. Combat units with direct access, or quick access, to imagery and other data enjoy greatersituational awareness and thus higher combat effectiveness. A tightly integrated communications architecture also supportsprecision strikes from standoff weapons platforms, reducing friendly casualties in the process

Digital image generation and processing systems in a local area network linked by fast fibre-optic transmission channels

Applications of a digital image acquisition and processing system for an HB5 scanning transmission electron microscope