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The Application of Wavelet in Watermark and Target Tracking

Author: HuangZuo
Tutor: ZengXiaoMing
School: Xiamen University
Course: Basic mathematics
Keywords: Particle filter Tracking Digital watermarking Wavelet Transform Algorithm
CLC: TP309.7
Type: Master's thesis
Year: 2009
Downloads: 73
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Abstract


This paper describes in detail the basic theory and methods of wavelet basis , introduces the wavelet in the application of digital watermarking as well as its role in target tracking . Wavelet theory is the rise in recent years, a new branch of mathematics , it is empty time domain and frequency domain local transformation . Due to its development and characteristics , based on wavelet transform digital watermark image watermarking technology to become a hot research . And the image field of computer vision tracking is a hot research problem in the visual surveillance , human-computer interaction, robot navigation and other fields have a wide range of applications . This paper is organized as follows . The first chapter, we analyze the wavelet theory , the development of digital watermarking , and target tracking profiles do some simple introduction. The second chapter, we propose an approach based on the wavelet transform domain scrambling digital watermarking algorithm . The algorithm uses grayscale image as watermark information embedding , first use of scrambling the watermark image preprocessing techniques to enhance the security of watermarking system , improve the system's robustness. Then the watermark information is embedded into the high frequency coefficients , thus not between visibility and robustness to obtain better balance. The third chapter , we study the particle filter theory and its implementation method using particle filtering theory to solve the problem of target tracking , build likelihood function based particle filter tracking framework . Finally, the wavelet features as the target characterization methods to study the characteristics of the target tracking based on wavelet method .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
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