| Summary: | 碩士 === 國立交通大學 === 資訊管理研究所 === 93 === In this digital era, all kinds of media data are recorded and presented digitally. The popularity of digital devices also brings up the needs for new digital data applications, and digital forensics is one of them.
This research is to analyze the relationship between digital cameras and images produced by them. First, digital image processing technology is applied with data mining method to get images’ features. Later, these features were trained and classified to identify the images’ original camera sources. Second, the identification features were further analyzed and improvements, based on the analyses, were proposed to enhance the identification precision rate.
In addition, camera manufacturers have various designs of image formation process for digital camera. By analyzing the distinctive feature of the process, the original camera source of digital image will be identified. This research focused on comparing and contrasting not only cameras of different manufacturers, but also those of the same manufacturer and similar models. By doing so, the potential limits of this identification method will be defined by the research results.
Finally, a conclusion based on the research findings is presented, and suggestions for future and further research are provided as well.
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