Publication: Adaptive quantization with Fuzzy C-mean clustering for liver ultrasound compression
Issued Date
2014-01-01
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ISSN
15987833
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2-s2.0-84920143036
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Mahidol University
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SCOPUS
Bibliographic Citation
International Conference on Control, Automation and Systems. (2014), 521-524
Suggested Citation
Rattikorn Sombutkaew, Yothin Kumsang, Orachat Chitsobuk Adaptive quantization with Fuzzy C-mean clustering for liver ultrasound compression. International Conference on Control, Automation and Systems. (2014), 521-524. doi:10.1109/ICCAS.2014.6987834 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/33759
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Title
Adaptive quantization with Fuzzy C-mean clustering for liver ultrasound compression
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Abstract
© 2014 Institute of Control, Robotics and Systems (ICROS). With the massive increment of patients' medical information and images also limitation in transmission bandwidth, it is a challenging task for developing efficient medical information and image encoding techniques for digital picture archiving and communications (PACS). In order to achieve higher encoding efficiency, this research proposes adaptive quantization via fuzzy classified priority mapping. Image statistical characteristics are used as key features for Fuzzy C-mean clustering. The derived priority map is used to identify levels of importance for each image area. The significant candidates of irregular liver tissues, which need special doctor's attention, will be assigned with higher priority than those from the regular ones. The higher the priority, the greater the number of bits assigned for encoding. An analysis of suitable quantization step size has been conducted. With the selection of appropriate quantization parameters for each priority level, the blocking artifacts can be greatly reduced. This results in quality improvement of the reconstructed images while the compression ratio remains reasonably high.