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A compact single-photon avalanche diode (SPAD) testing array fabricated in standard 0.18μm CMOS technology is presented. Four types of SPAD are designed in 18μm pixel pitch with 3μm active region and arranged in four 16×30 sub-arrays. The implemented column readout circuit consists of column-shared comparator and tunable hold-off time control circuit, which performs the avalanche sensing with feedback...
In this paper, we present an interactive system for recognizing flower images taken by digital cameras. The proposed system provides an interactive interface allowing each user to draw an appropriate bounding window that contains the interested flower region. Then, a flower boundary tracing method is developed to extract the flower region as accurately as possible. In addition to the color and shape...
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