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As a cue to depth perception, motion parallax can improve stereoscopic visualization to a level more like human natural vision. And stereoscopic visualization with motion parallax rendering can lessen the fatigue when people are long-time immersed in virtual scenes. This paper presents a three-stage approach for real-time stereoscopic visualization (SV) with motion parallax rendering (MPR), which...
This paper presents a fast continuous geometric calibration method for projector-camera system under ambient light. Our method estimates an appropriate exposure time to prevent features in captured image from degradation and adopts ORB descriptor to match features pairs in real-time. The adaptive exposure method has been verified with different exposure values and proved to be effective. We also implement...
Chinese painting is very abstract and emotional, and drawing techniques are flexible and full of changes. Painting with line strokes is one of the most important drawing techniques for Chinese paintings. A method to automatically render line brush strokes for Chinese landscape paintings is proposed in this paper. Analyzed the common techniques of drawing lines used by artists, we developed a new type...
We propose a visual tele-AR system, which is a combination of tele-existence and AR techniques. By wearing a video see-through HMD and moving his head, a user in this system is able to tele-operate a remote pan-tilt platform to observe the remote scene. Unlike traditional tele-existence systems which use mechanical or magnetic sensors for tele-operation, we propose a novel tele-operation method based...
Automatic image annotation has emerged as an important research topic due to its potential application on both image understanding and web image search. Due to the inherent ambiguity of image-label mapping, the annotation task has become a challenge to systematically develop robust annotation models with better performance. In this paper, we present an image annotation framework based on Sparse Representation...
In order to perform the on-orbit servicing mission, the robotic system is firstly required to approach and dock with the target autonomously, for which the measurement of relative pose is the key. It is a challenging task since the existing GEO satellites are generally non-cooperative, i.e. no artificial mark is mounted to aid the measurement. In this paper, a method based on natural features is proposed...
In order to create a rapid, easy, and circulatory capabilities for multipurpose applications of remote sensing image, a network-oriented satellite remote sensing circulation architecture was proposed, and its key components was discussed in the same time. The client scheming and block data disposure were supplements to the integrity circulation architecture, conforming to which, clients can distribute...
Most of current 3D face reconstruction methods based on 2D image are complex. In this paper, a novel and efficient method on the basis of geometric transformation is presented. The method is composed of two aspects, pose estimation and 3D model reconstruction. For the first part, an improved Active Shape Model(ASM) algorithm is used to detect the feature points of the face in the image, and the frontal...
The total size of massive aircraft CAD models is usually up to several GBs, which exceed not only the storage capacity of memory, but also the rendering ability of graphics card. In this paper, we present compression and rendering methods by exploring the up-to-date GPU techniques. To fit into the memory, vertex data are compressed from float to byte type with bounding box information and then decompressed...
An increasing number of touch screen interfaces have promoted plenty of applications. A great part of the applications is game. However, the lack of haptic feedback on touch screens also degrades the enjoyment of touch screen games. We present the design of a new cable-driven force feedback touch screen to enhance touch interactions especially in games. The implementation and principle of the force...
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