基于二维卷积的图像插值实时硬件实现 |
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引用本文: | 张辉,胡广书.基于二维卷积的图像插值实时硬件实现[J].清华大学学报(自然科学版)网络.预览,2007(6). |
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作者姓名: | 张辉 胡广书 |
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作者单位: | 清华大学生物医学工程系 北京100084 |
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摘 要: | 为了实时实现图像处理中的图像插值,提出了一种与具体插值算法无关的通用二维卷积器实现结构和一种使用两级缓存的图像数据存取结构。利用所提出的结构,设计了使用双三次插值的图像插值模块,在可编程逻辑门阵列上进行了实现。进行了图像实时放大的实验。实验结果表明:采用本结构,可以降低片上存储器的消耗,方便地实现比较复杂的插值,达到实时处理的目的。
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关 键 词: | 图像插值 二维卷积 两级缓存 双三次插值 可编程逻辑门阵列 |
Real-time hardware implementation of 2-D convolution based image interpolation |
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Authors: | ZHANG Hui HU Guangshu |
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Abstract: | An algorithm independent hardware architecture based on 2-D convolver was proposed for the implementation of real-time image interpolation.A two-level caching mechanism was introduced to access image data.An image interpolation module using bi-cubic interpolation was implemented based on the scheme,and mapped into a field programmable gate array(FPGA)chip.Image zooming experiment results show that the architecture can be easily adopted for the implementation of sophisticated image interpolation algorithms and real-time operations can be achieved,as well as a reduction of the amount of memories used for calculation. |
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Keywords: | image interpolation 2-D convolution two-level caching bi-cubic interpolation field programmable gate array(FPGA) |
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