In this paper, we present a new technique for longterm global motion estimation of image objects. The estimated motion parameters describe the continuous and time-consistent motion over the whole sequence relatively to a fixed reference coordinate system. The proposed method is suitable for the estimation of affine motion parameters as well as for higher order motion models like the parabolic m...

The motion compensated coding(MCC), which exploits the temporal redundancies in the moving images, is one of the most popular techniques currently used. Recently, a variable block size(VBS) motion estimation technique has been proposed to improve the performance of the motion compensated transform coding(MCTC). This technique allows larger blocks to be used when smaller blocks provide little ga...

We present a method of segmenting video to detect cuts with accuracy equal to or better than both histogram and other feature based methods. As well, the method is faster than other feature based methods. By utilizing feature tracking on corners, rather than lines, we are able to reliably detect features such as cuts, fades and salient frames. Experimental evidence shows that the method is able...

In this paper our system for face and facial feature tracking using an active model is described. The focus of the paper is on image warping methods for achieving realtime performance, in order to show that it is possible to implement a real-time model based coding system on consumer hardware.

This paper deals with the ego-motion estimation (motion of the camera) from two views. When we want to estimate the ego-motion we have to nd correspondences and we need a calibrated camera. In this paper we solve the problem how to propagate known camera calibration errors into the uncertainty of the motion parameters. We present a linear estimate of the uncertainty of the motion parameters bas...

Ground motion estimation for a site (34.01 o N, 71.45 o E) located in the Peshawar in terms of Peak Ground Acceleration (PGA) values is conducted. It is carried out with deterministic seismic hazard analysis approach using faults sources within a radius of one hundred kilometers around site. The results of this study indicate that the Main Boundary Thrust located at a distance of twenty nine (2...

This paper aims to develop a simple algorithm for determining the direction of ego-motion of a monocular observer in a static environment. Rather than returning a single direction the algorithm returns a set of motion directions known to contain the true direct tion. Translational motion can be arbitrary. The algorithm is based on one invented by Horn and Weldon [1]. It uses only normal compone...

A novel approach is presented for recovering the motion parameters of a camera from two frames. The proposed method does not require establishing point correspondences between the images, as does most current techniques. Our approach is also more straightforward than the very few non-correspondence motion estimation algorithms. It is based on the estimation of structure for each given set of mo...

This work proposes a visual odometry method that combines points and plane primitives, extracted from a noisy depth camera. Depth measurement uncertainty is modelled and propagated through the extraction of geometric primitives to the frame-to-frame motion estimation, where pose is optimized by weighting the residuals of 3D point and planes matches, according to their uncertainties. Results on ...