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Action recognition is always a very active and challenging research topic in the field of computer vision. Kinect, as a motion sensing input device which can capture both color and depth images, open up new possibilities of dealing with this task. In this paper, we build a system to track and classify the human action based on the Microsoft Kinect technology. During the feature extraction step, we...
As an important research field in image based rendering, relighting techniques make it possible to synthesis physically real objects in virtue scenes, which will definitely enhance sense of reality for users and thus improve user experience. On the other hand, as an important branch of augment reality, spatially augmented reality also seeks for user experience enhancement in emersions, which is achieved...
This paper describes a system for action recognition with a single camera. Firstly, we use a two-layered background subtraction, which is based on both chromaticity and gradient, to extract human contours from the frame sequence captured by camera. This subtraction helps us remove shadows from foreground and get a good contour for recognition. Then we parameterize a human posture with a model called...
This paper presents an approach that can relight captured image with real incident light source. We first captured basis images of objects illuminated with a projector as the basis light source. We then established a pixel level mapping relationship between a real incident light source and the basis light source. Finally we developed a relighting algorithm that can simulate the relit effects with...
Radiometric compensation has made it possible for a projector to display on ordinary surface with colors and textures. For previous methods, itpsilas necessary to calibrate both the projector and camera at first. The calibration can be time-consuming and needs to be redone once the system settings change. We present a method that simplifies the calibration process. As a result, the system is more...
This poster describes our recently developed real-time projector-camera system for interaction with Chinese Ink-and-Wash Cartoons. We implement a real-time interactive water simulation under the acceleration of GPU, together with a sensing subsystem using computer vision techniques. Combined with Chinese stylized fish rendered in process, the system provides real-time interactions with traditional...
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