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This paper describes an FPGA-based system capable of computing the distance of objects in a scene to two stereo cameras, and use that information to isolate objects in the foreground. For this purpose, four disparity maps are generated in real time, according to different similarity metrics and sweep directions, and then merged into a single foreground-versus-background bitmap. Our main contribution...
In order to detect the location of smoke in the Measuring System for Ground Shell Dispersion (MSGSD), presented an improved algorithm for the Background Subtraction. Focused on introducing design of the image detection algorithm. The results show that the system can quickly, accurately and effectively detect the location of the smoke.
This paper presents an intelligent video surveillance system. The system is composed of one or more nodes flexibly according to the application scenarios such as private properties, banks and museums. Each node is an autonomous vision-based device capable to perform intelligent tasks. It is able to digitize and compress the acquired analog video signals in MPEG-4 standard and then transmit the compressed...
In view of the complexity and high cost of image processing system, the real-time image processing system based on SOPC (System-on-a-Programmable-Chip) is proposed in this paper. The embedded Nios II soft-core processor is used to collect and process the image and the algorithm which has the features of simplicity and great data quantity and parallelism is implemented by the hardware in FPGA. By this...
There is an improvement to the Bicubic interpolation enlargement algorithm based on the hardware parallel processing in this article. Search table method used in this paper has avoided massive cubic and the floating numbers multiply operation. It reduces the computation load greatly. Convolution operation in tow directions, level and vertical, of the 4x4 picture element matrix on FPGA has been realized...
Measuring a vehicle's speed using a video image is an important technique in an intelligent transportation system. This paper presents a hardware implemented vehicle speed measurement (VSM) system. The operation of the system consists of three steps. First, we remove vehicles from a series of captured images to create a background. To do this, we introduce a simplified exclusion algorithm optimized...
Image segmentation is an important technique in the area of image processing with wide applications in medicine, remote sensing to mention a few. A lot of research work is in progress in various areas resulting in many computationally efficient algorithms. There are conventional as well as improvised segmentation algorithms depending on the application. The choice of the technique in most cases depends...
This paper proposes an internal memory optimization method for the spatial scalable inter-layer prediction. The spatial scalable prediction of the H.264 scalable video coding (SVC) has additional inter-layer predictions. The up-scale processing of the inter-layer prediction consists of the Wiener interpolation filter and the deblocking filter. They need internal memories for the pixel buffering. Thus,...
In order to enhance the resolution of Charge Coupled Device (CCD) pixel with the pixel dimension and focal length of optical system unchanged, the problem of CCD geometric superresolution is educed. The problem is discussed in terms of software and hardware. In software, the bicubic interpolation is introduced, while in hardware, the subpixel imaging method is utilized. The subpixel imaging method...
In this paper, we propose a novel architecture of a general graphics shader processor without a dedicated hardware. Recently, mobile devices require the high performance graphics processor as well as the small size and low power. The proposed shader processor is a GP-GPU (General-Purpose computing on Graphics Processing Units) to execute the whole OpenGL ES 2.0 graphics pipeline by using shader instructions...
This paper presents a hardware architecture for calculating the city-block and chessboard distance transform on binary images. It is based on applying multiple morphological erosions and adding the result, enabling both processing pixels in raster scan order and a deterministic execution time. Which distance metric to be calculated is determined by the shape of the structuring element, i.e. diamonds...
In this work we propose a method for converting triangular meshes into LEGO?? bricks through a voxel representation of boundary meshes. We present a novel voxelization approach that uses points sampled from a surface model to define which cubes (voxels) and their associated colors will compose the model. All steps of the algorithm were implemented on the GPU and real-time performance was achieved...
One of the challenging advents in computer science in recent years was the fast evolution of parallel processors, specially the GPU - graphics processing unit. GPUs today play a major role in many computational environments, most notably those regarding real-time graphics applications, such as games. The digital game industry is one of the main driving forces behind GPUs, it persistently elevates...
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