| 图像旋转 VLSI 流水结构设计 |
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| 引用本文： | 袁雅婧,桑红石,侯云峰,张天序. 图像旋转 VLSI 流水结构设计[J]. 华中科技大学学报(自然科学版), 2012, 40(1): 10-14 |
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| 作者姓名： | 袁雅婧 桑红石 侯云峰 张天序 |
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| 作者单位： | 1. 华中科技大学图像识别与人工智能研究所,湖北武汉,430074
2. 长春理工大学光电工程学院,吉林长春,130022 |
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| 基金项目： | 国家自然科学基金重点资助项目(60736010) |
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| 摘 要： | 提出了一种基于3步平移算法的实时图像二维旋转VLSI流水结构．该结构采用了一种新颖的缓存机制,通过错位存储中间结果和单独存储列平移量的方式,显著减少了片上存储器的总容量,同时也减少了整个旋转过程中无效数据的处理量,提高了数据通过率．该设计采用SMIC0．18μmCMOS工艺进行了流片,在100MHz工作频率下,对一幅512×512的图像旋转45°,处理时间约为3．81ms,满足了大多数图像处理系统的实时性要求．
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| 关 键 词： | 图像处理 图像旋转 3步平移算法 缓存机制 超大规模集成电路流水结构 |
A pipelined VLSI design for image rotation |
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| Yuan Yajing,Sang Hongshi,Hou Yunfeng,Zhang Tianxu. A pipelined VLSI design for image rotation[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2012, 40(1): 10-14 |
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| Authors: | Yuan Yajing Sang Hongshi Hou Yunfeng Zhang Tianxu |
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| Affiliation: | 1(1 Institute for Pattern Recognition and Artificial Intelligence,Huazhong University of Science and Technology,Wuhan 430074,China;2 School of Photo Electronic Engineering, Changchun University of Science and Technology,Changchun 130022,China) |
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| Abstract: | A pipelined VLSI architecture for three-pass rotation algorithm was proposed,in which a buffer scheme was used.This architecture buffers the intermediate results in the dislocated order and stores the offsets in the horizontal direction separately.As a result,both the area of on-chip memory and the amount of pixels processed were reduced.The design was fabricated by SIMC(Semiconductor Manufacturing International Corporation) 0.18 μm CMOS(complementary metal oxide semiconductor) technology.Experimental results show that it only takes 3.81 ms at 100 MHz to rotate a 512×512 image by the angle 45°,which meets the real-time requirement for many application systems. |
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| Keywords: | image processing image rotation three-pass algorithm buffer scheme very large scale integrated （VLSI） circuits pipelined architecture |
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