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This paper presents a method for achieving high speed and high compression ratio of Huffman encoding by updating and optimizing the code word table. A shadow code word table is continuously reconstructed according to the frequency distribution of the currently encoded symbols and used to replace the active code word table in real-time, if the compression ratio degrades. Multiple-matches in a content...
We are developing a Compton camera based on Si and CdTe semiconductor imaging devices with high energy resolution. In this paper, results from the most recent prototype are reported. The Compton camera consists of six stacked double-sided Si strip detectors and CdTe pixel detectors, which are read out with low noise analog ASICs, VA32TAs. We obtained Compton reconstructed images and spectra of line...
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