| 嵌入式机器视觉系统图像处理和传输接口设计 |
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| 引用本文： | 邱永华. 嵌入式机器视觉系统图像处理和传输接口设计[J]. 电子产品可靠性与环境试验, 2012, 0(3): 65-69 |
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| 作者姓名： | 邱永华 |
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| 作者单位： | 广东女子职业技术学院,广东广州510450 |
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| 摘 要： | 介绍了一种采用CMOS图像传感器来实现智能机器视觉识别的方法,通过LM9638采集图像数据,经过复杂可编程逻辑器件(CPLD)(XC95144-TQ144)进行总线传输和转换,然后ARM以直接内存存取(DMA)的传输方式将图像数据保存到存储器中。同时ARM将采集到的图片数据进行预处理,通过模板对比算法,将采集到的数据与事先存储的数据进行分析和比较,完成机器智能视觉识别。通过CPLD对采集时序进行了分析,并进行了测试仿真,经验证后速度和效果均达到设计要求。
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| 关 键 词： | 机器视觉 嵌入式 直接内存存取 复杂可编程逻辑器件 |
Design of Image Processing and Transfer Interface of Embedded Machine Vision System |
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| QIU Yong-hua. Design of Image Processing and Transfer Interface of Embedded Machine Vision System[J]. Electronic Product Reliability and Environmental Testing, 2012, 0(3): 65-69 |
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| Authors: | QIU Yong-hua |
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| Affiliation: | QIU Yong-hua (Guangdong Women＇s Polytechnic College, Guangzhou 510450, China) |
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| Abstract: | An intelligent machine vision recognition method with a CMOS image sensor is intro- duced. The image data are captured through the LM9638, and the bus transport and conversion are implemented with CPLD （XC95144-TQ144） . Then the image data are saved to the memory in DMA mode with an ARM. In the ARM, the collected image data are pre-processed, and ana- lyzed and compared with the pre-stored data through the template comparison algorithm to com- plete the machine visual recognition. The timing of the acquisition is analyzed with a CPLD and the testing simulation is performed. It is demonstrated that the speed and effectiveness of the design meet the requirements. |
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| Keywords: | machine vision embedded DMA CPLD |
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