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This paper optimizes traditional license plate recognition system (LPRS) and for each original part with deficiencies, we give our own novel methods to refine them, such as integrating color and edge detection to increase the success rate of locating LPs as well as employing connected component analysis and vertical projection method alternatively to make segmentation more precise and efficient. For...
Coefficient scanning plays an important role in block-based image and video coding standards, such as JPEG, MPEG, and the latest H.264/AVC. In these coding standards, the zigzag scanning method is used for image / frame coding and the field scanning method is used for field coding. Although these scanning methods can achieve acceptable coding efficiency, they do not take the statistical properties...
This paper presents the design and implementation of robust real-time visual servoing control with an FPGA-based image co-processor for a rotary inverted pendulum. The position of the pendulum is measured with a machine vision system whose image processing algorithms are pipelined and implemented on a field programmable gate array (FPGA) device to meet real-time constraints. To enforce robustness...
Compared with traditional image smoothing method, partial differential equations -based image smoothing method is better in preserving image features while suppressing image noise. The PDE-based image denoising smoothing algorithm and an improved algorithm based on it are discussed in the paper. A good result is achieved in the experiment of identifying flaws on precise optical componentspsila surface...
Snake (active contour) model, introduced by Kass in 1987, is a dynamic curve model with energy-minimizing. Snake algorithm, which has advantages in extracting target object from a certain region, is an effective method in image segmentation. Based on the analysis of the snake model and the regional information of the edges of the fingerprint images, an improved active contour for the segmentation...
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