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.
Depth data captured by Kinect provides inexpensive geometric information to higher level computer vision tasks such as object detection and recognition. However, there are missing values in the depth map at object boundaries and those beyond the working distance of Kinect due to the limitations of the hardware employed. In this paper, we proposed a self-taught regression method to recover the missing...
This paper presents a novel method to conduct camera pose estimation though combining Kinect and Perspective-n-points algorithms. Most existing camera pose estimation methods suffer from the errors caused by inevitable outliers between 2D–3D correspondences. To this end, we propose to use a random down sampling process to deal with outliers in this paper. The proposed method is divided into two main...
In many ways about solving the large workload estimation of LFM signal in the FrF Domain, the 2D peak searching algorithm is much more complex. This paper presents an FrFT modulus detector via MLS curve-fitting optimization technique, which can simplify the 2D peak searching to a problem of 1D curve fitting. And for multi-component signals, we further introduce a Gaussian mixture model (GMM) to approximate...
An Attitude Heading Reference System(AHRS) based on MEMS-IMU has been constructed to estimate the attitude of the airplane model in wire-driven parallel suspension system in the paper. A quaternion-based attitude estimation algorithm with Kalman Filter is presented, which calculates the Euler angles of the model by collecting the signals from the gyroscopes, accelerometers and magnetometers. The simulation...
Transmission over wireless channels will introduce intersymbol interference (ISI) as well as interchannel (or intercarrier) interference (ICI). To decrease the effects of ICI, this paper proposes a multi-tap equalizer for the OFDM system based on the fractional Fourier transform (FrFT). In this FrFT-OFDM system, traditional Fourier transform is replaced by fractional Fourier transform to modulate...
This paper presents a new approach to measure texture directions and estimate illumination tilt angle of 3D surface textures by using mojette transform. Feature vectors are generated from variances of 72 mojette transform projections with different projection angles. The measured texture directions are compared with human perceptual judgement. Furthermore, we estimate illumination tilt angles by minimizing...
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.