The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we propose a novel reinforcement learning method to stabilize biped walking on rough terrain. For the state space and the action space of the biped walking problem is continuous, the neural network is used in our method, which is based on actor-critic learning, to approximate the policy function of actor and the value function of critic. The neural network learns on-line through the...
A low-cost and portable three-dimensional scanner system is designed in this paper, including hardware and software systems. A common camera and a linear laser emitter are used to detect the distance of the object by using triangulation algorithm. Meanwhile, 3D point cloud data is generated. Then by using QuickHull algorithm or MeshLab software, the object's surface can be recovered. To verify the...
A biped humanoid robot model with 12 degree of freedom is developed in this paper. To facilitate the gait pattern planning, the 3D inverted pendulum model and the ZMP are introduced to enable a human-like stable walking. Since the searching of best walk primitive is a multi-objective optimization problem, a modified aiNet Algorithm as well as SGA Algorithm is applied to the optimization process. Finally,...
Compressive sensing has opened up a new path to reconstruct images from a number of samples which is far smaller than the desired resolution of the images. A novel single pixel camera system has been developed based on this theory, and it can reconstruct images with a single optical sensing element. However, the development reminds challenge because the image recovery process is complex. For example,...
In view of the noise and measurement errors of sensors, the data in attitude information measurement system should be filtered. Based on the previous algorithm Kalman filtering, this paper proposes a more effective algorithm using particle filtering to solve the problem of accuracy appearing in Kalman filtering. Using Bayes theory, the estimate of the state of a system is accomplished by computation...
3D surface inspection has been widely used in the industry to detect all kinds of surface defects and to measure the overall quality of a produced piece. It gives us the idea of using this technique on mobile robots for terrain sensing. 3D surface inspection provides reliable and accurate measurements, but offline. So the challenge of using surface inspection on mobile robots is how to implement it...
A novel multi-hand tracking algorithm for human computer interface (HCI) is proposed, to solve the problem caused by the incompletion of tracking, the overlap of multi-object, the lost of the object and the confusion from background. For tracking the hand completely and effectively, we propose a new region-connection-based tracking method. And a hand motion model is established for tracking failure...
This paper presents a novel approach for real-time skin detection. The proposed approach enables reliable skin detection in dynamically changing illumination and environmental conditions. Histograms are used to model the color distributions in the approach, and they are estimated and dynamically updated by Kalman filters (KFs) over time. In addition, the illumination condition is estimated during...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.