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检索条件"任意字段=Conference on Image and Video Processing II"

共 1194 条记录，以下是21-30 订阅

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Real-time parallel video image processing on PC-cluster

Real-time parallel video image processing on PC-cluster

引用

SPIE conference on Parallel and Distributed Methods for image processing ii

作者： Arita, D Tsuruta, N Taniguchi, R Kyushu Univ Dept Intelligent Syst Fukuoka 812 Japan

ISBN: (纸本)0819429074

This paper describes a PC-cluster system for real-time parallel video image processing. The PC-cluster consists of seven PCs connected by a very high speed network. The key issue of this system is synchronization of distributed video data. Frame synchronization block is introduced to realize three kinds of synchronization: forward synchronization, barrier synchronization and backward synchronization. Forward synchronization is to notify of timing to start processing. Barrier synchronization is to wait for all data that are processed at the same time. Backward synchronization is to cancel processing and transferring useless data. Experimental results are also shown to confirm the performance of the PC-cluster.

关键词： real-time video image processing parallel processing synchronization PC-cluster high speed network

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Implementation of Edge Detection Using Fpga & Model Based Approach

Implementation of Edge Detection Using Fpga & Model Based Ap...

引用

International conference on Information Communication and Embedded Systems (ICICES)

作者： Dash, P. K. Pujari, Shashank Nayak, Sofia Inst Tech Educ & Res Dept Elect Engn Bbsr 751030 Odisha India Sambalpur Univ Inst Informat Technol Dept Embedded Syst Design Burla 768019 Odisha India

ISBN: (纸本)9781479938346

this paper describes the implementation of SOBEL and PREWITT APPROACH for edge detection in video and image processing applications using FPGA and Model Based Approach. The main theme behind this work is to understand the video image processing techniques which are used for edge detection on video and images. On Model Based Approach it explains the edge detection of video taking directly from webcam and how to read a video from the hard drive. Simulink becomes a key component for Model Based Approach. Edge detection model can be done using image processing block sets from Simulink Library of Mat-lab. For FPGA implementation the entire video image edge detection algorithm is implemented on CYCLONE ii FPGA device using ALTERA DE2 FPGA KIT. The input video or image come from a NTSC/PAL camera and the edge detected images are displayed on a VGA monitor. The functional implementation of all processes using VHDL code of FPGA has been compiled on ALTERA QUARTUS-ii software tool.

关键词： fpga cyclone-ii simulink vhdl edge detection altera

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A combined pre-processing and H.264-compression scheme for 3D integral images

A combined pre-processing and H.264-compression scheme for 3...

引用

IEEE International conference on image processing (ICIP 2006)

作者： Olsson, Roger Sjostrom, Marten Xu, Youzhi Mid Sweden Univ Dept Informat Technol SE-85170 Sundsvall Sweden

ISBN: (纸本)9781424404810

The next evolutionary step in enhancing video communication fidelity is taken by adding scene depth. 3D video using integral imaging (ii) is widely considered as the technique able to take this step. However, an increase in spatial resolution of several orders of magnitude from todays 2D video is required to provide a sufficient depth fidelity, which includes motion parallax. In this paper we propose a pre-processing and compression scheme that aims to enhance the compression efficiency of integral images. We first transform a still integral image into a pseudo video sequence consisting of sub-images, which is then compressed using an H.264 video encoder. The improvement in compression efficiency of using this scheme is evaluated and presented. An average PSNR increase of 5.7 dB or more, compared to JPEG 2000, is observed on a set of reference images.

关键词： three-dimensional displays image coding

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Interactive modifications of video object trajectories in natural video sequences for post-production applications

Interactive modifications of video object trajectories in na...

引用

IEEE International conference on image processing

作者： Nicolas, H Denoual, F INRIA IRISA F-35042 Rennes France

ISBN: (纸本)0780376226

This paper proposes a new approach allowing efficient and semiautomatic object-based manipulation for video editing or post-production applications, such as the modification of the trajectories of video objects in a natural scene. For that purpose, an image is seen as a superposition of video Object Planes (VOP) on an original image or a mosaic view of a fixed background. The method is based on the definition of a warping model and a depth calibration of areas of the background in which the video objects are moving. Experimental results show that a high level of realism can be obtained on the edited images in which the original trajectories of non-rigid video objects have been strongly modified.

关键词： image enhancement

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Silicon solutions for recordable DVD products enabling storage of digital video for mass markets

Silicon solutions for recordable DVD products enabling stora...

引用

IEEE International conference on image processing (ICIP 2000)

作者： Saffari, B Najam, Z C Cube Microsyst Milpitas CA 95035 USA

ISBN: (纸本)0780362985

The recent advancements in silicon architecture and integration can now be utilized to address digital video recording & play back. With digital recording, it's been a balancing act of video quality verses recording time. In this paper we present the technology trends, several family of silicon developments, address copy protection of material and discuss supporting various video recording formats as applicable in a low cost consumer product.

关键词： image communication systems

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Design of Real Time video image Acquisition and processing System Based on FPGA 4

Design of Real Time Video Image Acquisition and Processing S...

引用

4th International conference on Environmental Science and Material Application (ESMA)

作者： Chen, Peifeng Jilin Radio & TV Univ Jilin Jilin Peoples R China

Based on characteristics of instantaneously, large capacity and miniaturization of digital image acquisition and processing technology, a real-time video image acquisition and processing circuit system was designed, FPGA was used as the center of controlling the whole system and the center of processing image data. With DDR2 SDRAM the core component of high speed storage module, and CMOS 7670 the video image acquisition device. Through the Quratus ii and Modelsim software for edge detection algorithm mand the control process, each module of the hardware design and simulation, the realization of the video images from the collection and storage to the treating and display, which shows smooth, clear and real-time.

关键词： Field programmable gate arrays (FPGA)

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Motion sensitive pre-processing for video

Motion sensitive pre-processing for video

引用

International conference on image processing (ICIP 2001)

作者： Florêncio, DA Microsoft Res Redmond WA 98052 USA

ISBN: (纸本)0780367251

Due to the capture process, video signals are generally contaminated by noise. Furthermore, overall video quality can be improved by reducing sharpness in fast moving areas, except in cases where the eye is able to track the motion. In this paper we propose a relatively simple pre-processing method that is able to address both these situations. The proposed pre-processing algorithm is based on selectively removing high frequencies that are not well predicted by the motion compensation. While the decision is made based on temporal tracking, the filtering is done exclusively in the spatial domain, thus avoiding the artifacts produced by other pre-processing methods.

关键词： video signal processing

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DVD: Ground zero in the convergence zone

DVD: Ground zero in the convergence zone

引用

IEEE International conference on image processing (ICIP 2000)

作者： Taylor, J Microsoft Corp Redmond WA 98052 USA

ISBN: (纸本)0780362985

DVD has become the most successful consumer electronics product of all time. It's at the center of important convergence processes: analog to digital, interlaced to progressive, 4:3 aspect ratio to 16:9 widescreen, and passive to interactive. Anyone producing video must understand how DVD is moving customers into a new media age. This presentation will analyze trends, discuss features, and examine futures such as WebDVD, interactive video, progressive video, and high-definition DVD.

关键词： image communication systems

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Hardware Accelerator for Fast image/video Thinning

Hardware Accelerator for Fast Image/Video Thinning

引用

IEEE International conference on Imaging Systems and Techniques (IST) / IEEE International School on Imaging

作者： Davalle, Daniele Carnevale, Berardino Saponara, Sergio Fanucci, Luca Terreni, Pierangelo Univ Pisa Dept Informat Engn Via G Caruso 16 I-56122 Pisa Italy

ISBN: (纸本)9781479952205

image thinning algorithms are widely used in image processing to simplify elaboration preserving geometrical features. Standard approaches are based on iterative methods and on distance transforms. Both techniques are well known to be computationally intensive. In this work we propose a parallel, fast and flexible hardware architecture for image thinning to achieve real-time performance. The test case is the 720 x 576 PAL standard video at 25 frame per second (fps). Synthesis was performed for a Stratix ii FPGA EP2S30 and for a standard cell 65 nm CMOS technology. The former showed a usage of 4 % slices and 1 % registers, the latter gave an occupation of 5 kgates for the processing core. The execution time for one frame was 0.03 s on the FPGA and 0.009 s on the 65 nm, resulting in a maximum throughput of 33 fps and 111 fps, respectively.

关键词： CMOS integrated circuits field programmable gate arrays image thinning iterative methods transforms video signal processing CMOS technology PAL standard video Stratix ii FPGA EP2S30 distance transforms geometrical feature preservation hardware accelerator image processing size 65 nm video thinning Algorithm design and analysis Computer architecture Field programmable gate arrays Hardware image segmentation Random access memory Standards image thinning Field programmable gate arrays iterative methods hardware accelerator distance transform Algorithm design and analysis CMOS technology random access machine Computer Architecture video signal processing CMOS integrated circuits image processing image segmentation Computer hardware Transform

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Spatio-temporal joint probability images for video segmentation

Spatio-temporal joint probability images for video segmentat...

引用

IEEE International conference on image processing (ICIP 2000)

作者： Li, ZN Wei, J Simon Fraser Univ Sch Comp Sci Burnaby BC V5A 1S6 Canada

ISBN: (纸本)0780362985

In this paper we propose a novel video segmentation algorithm that is capable of reliably detecting both types of dissolves in addition to cuts and wipes based on the analysis of spatio-temporal behaviors of Joint Probability images (JPIs). Experimental results for identifying scene transitions in various video clips that contain moderate and significant amounts of movements are demonstrated.

关键词： image segmentation

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