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Accuracy of peak detection is very important for autonomic evaluation based on photoplethysmographic (PPG) signals. Considering percussion peaks may not the maximum points in their PPG periods, the study proposed an improved algorithm of peak detection. It first determines the reference points at the rising edge of PPG percussion waves and then applies the local maximum only in the certain ranges...
This paper presents a method of fingertip positioning and tracking. Image sequence is acquired from a monocular camera. There are three steps to eliminate the interference, which are differential processing, noise reduction and shadow removal. Then we take corner detection and elliptic curve fitting to determine the fingertip position. In fingertip tracking, we use an improved compressive tracking...
According to the features of traffic supervisory video, Compressive Tracking (CT) algorithm is adopted to detect and track the moving car. When the camera angle, moving vehicle scale and background changed, the CT algorithm still has a strong robustness. However, the algorithm is invalid when car is sheltered so that the tracked car cannot be located. In order to overcome this problem, a new method...
Traditional Top-N strategy for movie recommendation takes only users' ratings into account when mining users' needs or interests. But watching movie is a special behavior, in which users' interests should not just be represented by their ratings. We think that the decision to watch a movie also reflects the target users' needs, even though he or she may give it a low rating. In this paper, we introduce...
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