| 基于B样条插值的图像边缘检测的硬件实现 |
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| 引用本文： | 李开宇. 基于B样条插值的图像边缘检测的硬件实现[J]. 光电工程, 2007, 34(2): 93-99 |
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| 作者姓名： | 李开宇 |
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| 作者单位： | 南京航空航天大学,自动化学院,江苏,南京,210016 |
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| 摘 要： | 为了能高速、高质量地进行图像边缘检测,提出了一种新的基于B样条插值的边缘检测方法.该方法采用了三次B样条插值原理,对图像的像素点灰度值进行插值运算,提出了基于B样条插值的一阶和二阶微分算子,并引入数字滤波技术加以实现.还利用B样条的可分离特性,实现了2维空间中基于B样条插值的连续图像的重构函数,在此基础上提出了用于边缘检测的基于3次B样条的一阶微分模板和二阶微分模板.设计出一套基于DSP FPGA的实时图像处理和显示系统.
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| 关 键 词： | 边缘检测 B样条插值 数字滤波 可编程门阵列 |
| 文章编号： | 1003-501X(2007)02-0093-07 |
| 收稿时间： | 2006-03-24 |
| 修稿时间： | 2006-03-24 |
Hardware realization of image edge-detection based on B-Spline interpolation |
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| LI Kai-yu. Hardware realization of image edge-detection based on B-Spline interpolation[J]. Opto-Electronic Engineering, 2007, 34(2): 93-99 |
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| Authors: | LI Kai-yu |
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| Affiliation: | College of,4utomation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | In order to realize fast and high-quality edge detection for image,a new approach for edge-detection was introduced based on B-spline interpolation.The cubic B-spline interpolation was adopted to calculate the gray of pixels of the image,and then the 1-order differential operator and the 2-order differential operator were designed and realized by means of the digital filter technology.The continuous synthesis function of 2D space based on B-spline interpolation was also realized By making use of separability of B-spline.Then a 1-order gradient template and a 2-order gradient template were designed for edge detection,and real-time image processing and displaying system were also developed based on Digital Signal Processing(DSP) and Field Programmable Gate Array(FPGA) . |
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| Keywords: | Edge-detection B-spline Interpolation Digital filtering FPGA |
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