Application of object detection method based on DC coefficients

doi:10.3778/j.issn.1002-8331.2009.36.051

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (36): 174-176.DOI: 10.3778/j.issn.1002-8331.2009.36.051

• 图形、图像、模式识别 • Previous Articles Next Articles

Application of object detection method based on DC coefficients

LI Min¹，ZHENG Geng-sheng²

1.Department of Computer Science，Wuhan University of Science and Engineering，Wuhan 430073，China
2.Department of Computer Science and Engineering，Wuhan Institute of Technology，Wuhan 430074，China

Received:2008-07-24 Revised:2008-11-10 Online:2009-12-21 Published:2009-12-21
Contact: LI Min

DC系数在目标检测中的应用

李敏¹，郑更生²

1.武汉科技学院计算机科学学院，武汉 430073
2.武汉工程大学计算机科学与工程学院，武汉 430074

通讯作者: 李敏

Abstract

Abstract: To solve the problems in wireless monitor system based on single chip，such as poor CPU capability and small memory capacity，this paper proposes an object detection method based on DC coefficient.The method consists of three step：Firstly， decode the JPEG image partially and obtain the DC coefficients of the luminous blocks，then subtract the DC coefficients of the neighbouring image and implement threshold controlling on the subtract result to decect the object.Experimental results show this method has low computational complexity and high alarming precision，and it is suitable for wireless monitor system based on single chip.

Key words: image monitor, Direct Current（DC） coefficient, object detection

摘要： 针对基于单片机的无线图像监控系统存在的处理能力差、存储空间有限的缺点，提出了一种基于DC系数的目标检测方法：先对JPEG图像进行部分解码，提取亮度信号的DC系数，得到DC图，然后对相邻两幅DC图进行相减操作，最后对差值DC系数进行分块和阈值处理，判断是否有目标出现并报警。实验结果表明，该方法具有计算复杂度低，占用存储空间少和误报率低的特点，非常适合基于单片机的无线图像监控系统。

关键词: 图像监控, 直流系数, 目标检测

CLC Number:

TP391

LI Min¹，ZHENG Geng-sheng². Application of object detection method based on DC coefficients[J]. Computer Engineering and Applications, 2009, 45(36): 174-176.

李敏¹，郑更生². DC系数在目标检测中的应用[J]. 计算机工程与应用, 2009, 45(36): 174-176.

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Application of object detection method based on DC coefficients

DC系数在目标检测中的应用

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