电晕探测系统中JPEG截图文件系统的设计

于 晓; 王 欣; 阎 丰; 隋永新; 金春水; 杨怀江

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电晕探测系统中JPEG截图文件系统的设计

更新时间：2020-08-12

- 电晕探测系统中JPEG截图文件系统的设计
- Design of JPEG image file system in corona detection system
- 光学精密工程 2005年13卷第6期页码：721-726
- 作者机构：
  
  1. 空军航空大学,吉林长春,130022
  2. 吉林大学计算机科学与技术学院,吉林长春,130012
  3. 中国科学院研究生院北京,100039
  4. 中国科学院长春光学精密仪器机械与物理研究所应用光学国家重点实验室,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： TP317.4
- 收稿日期：2005-06-22，
  
  修回日期：2005-08-18，
  
  网络出版日期：2005-12-30，
  
  纸质出版日期：2005-12-30
- 稿件说明：
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于晓, 王欣, 阎丰, 等. 电晕探测系统中JPEG截图文件系统的设计[J]. 光学精密工程, 2005,13(6):721-726.

(YU Xiao, WANG Xin, YAN Feng, et al. Design of JPEG image file system in corona detection system[J]. Optics and precision engineering, 2005, 13(6): 721-726.
于晓, 王欣, 阎丰, 等. 电晕探测系统中JPEG截图文件系统的设计[J]. 光学精密工程, 2005,13(6):721-726. DOI：

(YU Xiao, WANG Xin, YAN Feng, et al. Design of JPEG image file system in corona detection system[J]. Optics and precision engineering, 2005, 13(6): 721-726. DOI：

摘要

针对检测及定位紫外电晕的问题

介绍了利用TMS320DM642高速DSP芯片设计的一种紫外电晕探测系统。该系统采用可见光和紫外光两台相机在同一视场采集图像

在LCD上实时显示两路信号经处理后的叠加图像

便于在观测电晕的同时确定电晕产生的部位。用户可将感兴趣的画面截获后压缩成JPEG图像存储到系统内部的FLASH中

并可以在LCD上浏览这些画面或通过USB接口将它们下载到PC机中。设计了一种用于存放截图的JPEG图像文件系统

给出了文件系统的原理框架

讨论了利用RF5参考框架实现JPEG编解码算法的方法

详细设计和实现了文件系统的存储空间组织、目录区结构和初始化、读写等基本操作。经测试

对分辨率为720×576的图像进行JPEG编、解码的平均时间分别为10.5 ms和9.6 ms;耗时较多的截图保存操作所需时间约为4~6 s;文件系统可以存放约70个图像。

Abstract

An ultraviolet corona detecting system was proposed for detecting and locating corona

in which TMS320DM642 was used as primary processor. A visible camera and an ultraviolet camera were used for inputing in the system. Two cameras have same visual field

so the processor can compose those input videos

and then display the result on LCD for user easy to observe and locate the corona. The interested images can be captured and saved into the internal FLASH of the system before it is encoded to JPEG files. The images in the internal FLASH can be displayed on LCD or downloaded into PC using USB interface. A kind of JPEG image file system was designed for saving these images

and implementation of JPEG algorithm based on RF5 was discussed. The design of storage space

structure of directory area

and the implementations of basic operations such as initialization

reading and writing in the file system were particularly discussed. The experimental results show that it respectively spends 10.5 ms and 9.6 ms for JPEG encoding and decoding operations on the image of 720×576 resolution

and it spends about 4~6 s for capturing and saving operations

and 70 images can approximately be saved in the file system.

关键词

Keywords

references

. 郭景富, 梁士利, 古力,等. 一种DSP应用系统的USB接口实现方案[J]. 光学精密工程, 2003, 11(2): 146-150. GUO J F,LIANG SH L,GU L,et al.A scheme of the applied DSP system with USB interface[J].Optics and Precision Engineering,2003, 11(2): 146-150.(in Chinese)

. TMS320DM642 video/imaging fixed-point digital signal processor data manual[M]. Texas Instruments Incorporated, 2003,5:17-168.

. TMS320C64x image/video processing library programmer's reference[M]. Texas Instruments Incorporated, 2002,4:26-112.

. TMS320C6000 imaging developer’s kit(IDK)user’s guide[M]. Texas Instruments Incorporated, 2001,9:27-150.

. TMS320C6000 JPEG implementation[M]. Texas Instruments Incorporated, 2000, 12:3-18.

. 齐美彬, 杨艳芳, 蒋建国. JPEG编码算法的DSP优化实现[J]. 合肥工业大学学报(自然科学版), 2002,25(4): 531-534. QI M B, YANG Y F, JIANG J G. Realization of JPEG coding based on DSP [J]. Journal of Hefei University of Technology, 2002,25(4): 531-534. (in Chinese)

. 刘杰, 康克军, 李政. 并行DSP处理器上JPEG算法的实现研究[J]. 计算机工程, 2000, 26(11): 50-52. LIU J, KANG K J, LI ZH. The study of image compression of JPEG based on parallel DSP processor [J]. Computer Engineering, 2000, 26(11): 50-52. (in Chinese)

. JPEG-2 Encoder + Decoder For DM642 RTM demonstration software release report[M]. Texas Instruments Incorporated, 2003, 6: 1-7.

. Implementing JPEG with TMS320C2xx assembly language software[M]. Texas Instruments Incorporated, 2000, 1: 3-8.

. TMS320 DSP/BIOS User's Guide[M]. Texas Instruments Incorporated, November 2002:20-21.

. Reference frameworks for expressDSP software: RF5, an extensive, high-density system[M]. Texas Instruments Incorporated, 2003, 4:2-17.

. An RF5 adaptation for IDMA2-based algorithms: a JPEG example[M]. Texas Instruments Incorporated, 2003:2-17.

. TMS320C6000 EMIF to external flash memory[M]. Texas Instruments Incorporated, 2002, 2:2-33.

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