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Three-dimensional display technology has developed fast in recent years, resulting in gradual attention to ink-style simulation in three-dimensional space. Currently, most studies on three-dimensional ink style drawings aim at the existing three-dimensional animals and plants models, but researches on terrain generation are rare. Based on freehand-ink-style analog in three-dimensional terrain, by...
This paper started with a two-dimensional image of ancient Chinese architecture. Firstly, it detected edge of target to obtain the contour and detected its corner points, which would be used to get contour curve equation. Then a rotating body reconstruction method based on the cross-sectional radius was proposed. It realizes the modeling of 3D rotation. What's more, non-photorealistic rendering of...
It presents an efficient moving object segmentation algorithm suitable for images on the programmable graphics hardware. The basic idea is to use simultaneously a novel spatial segmentation algorithm and an effective temporal algorithm based on human visual system. It defines two features needed in segmentation, the spatial and the temporal. Two segmentation algorithms are used simultaneously to produce...
Gesture recognition is needed for a variety of applications. It develops a real-time arm pointing system. The main contribution of the system is using stereo vision pointing to track the pointing arm and identify several pointing targets in 3D space. Our system consists of (1) hand tracking (2) hand shape extraction (3) finger orientation calculation and (4) finger line finding. The system allows...
It proposes a non-correlation, conceptually new, fast and efficient approach for DPIV, which takes the nature of flow into consideration. An incompressible affined flow model (IAFM) is introduced to describe a flow that incorporates constraints on the computation. This IAFM, combined with a modified optical flow method—named total optical flow computation (TOFC), provides a linear system solution...
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