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Segmentation and tracking of cells is important step in cell motility studies. Over the past two decades, researchers have developed powerful methods for detecting and tracking the living cells. To improve the overall living cells tracking systems performance, we focused on developing a novel algorithm for image processing. This paper presents novel image segmentation and tracking system technique...
We present a method for full-motion recovery of the head pose from a monocular video input based on an accurate head model and textures. We build our face model using a distribution of high resolution 3D face scans. The cost of computations makes us select parts of this full model. To address the difficult task of initializing the model position and tracking its motion, we use a composite metric using...
The endocardium tracking in ultrasound images is challenging due to large shape variations and the signal dropout. In this paper, we present a method to fuse multiple information sources to robustly track the endocardium. The first novelty of the method is to perform tracking in a straightened shape space, to minimize the image pattern changes caused by cardiac motions. Straightened images are used...
We present a framework for interactive tracking of protein translocations between nuclei and cytoplasm of single cells. Initially, we segment selected keyframes using a novel interactive segmentation method, which employs a constrained density weighted Nyström method for eigenvector decomposition, and the geodesic commute distance for pixel classification. Tracking is achieved by both forward and...
The tracking of facial activities from video is an important and challenging problem. Nowadays, many computer vision techniques have been proposed to characterize the facial activities in the following three levels (from local to global): First, in the bottom level, the facial feature tracking focuses on detecting and tracking the prominent local landmarks surrounding facial components (e.g. mouth,...
The quantification of left ventricular motion can provide valuable information about cardiac function. Echocardiography provides a non-invasive, readily available method for generating real time images of the left ventricle. Two methods for myocardial deformation tracking that have been used are shape tracking and speckle tracking. These two methods provide complementary information. Shape tracking...
This paper presents a framework for tracking extended targets which give rise to a structured set of measurements per each scan. The concept of a measurement generating point (MGP) which is defined on the boundary of each target is introduced. The tracking framework contains an hybrid state space where MGP:s and the measurements are modeled by random finite sets and target states by random vectors...
The Neurobiological model of motion recognition posits a Motion Energy Pathway and a Form Pathway but leaves the mechanism for Integration open. In this paper, we present a stochastic Integration methodology, based on the Hamiltonian Monte Carlo, which explores both the Motion and Form space by creating data-driven proposals in the image/form space which are then confirmed in the motion space. We...
This thesis describes a new method that in real time predicts fall and collision in order to support remote control of a tracked vehicle with sub-tracks. A tracked vehicle has high ability of getting over rough terrain. However, it is difficult for an operator at a remote place to control the vehicle's moving direction and speed. Hence, we propose a new path evaluation system based on the measurement...
This paper presents an intuitive method for synthesizing videos by directly manipulating video objects without using 3D models. The proposed method extracts a video object from each video frame and creates locally consistent video sequences using a 2D motion graph, where its node corresponds to the extracted video object and its edge represents a motion transition between a pair of nodes. Our primary...
We propose a non-invasive ultrasound theragnostic system that tracks movement in an affected area (kidney stones, in the present study) by irradiating the area with high-intensity focused ultrasound (HIFU). In the present paper, the concept behind a novel medical support system that integrates therapy and diagnostics (theragnostics) is illustrated. The required functions for the proposed system are...
Data Matrix barcode is one of the most extensively used 2D barcodes. During the flow process of Data Matrix barcode decoding, barcode localization is the first and non-trivial step for the latter steps, like affine transformation adjustment, fine-level foreground region extraction etc. In this paper, an innovative method for Data Matrix barcode localization based on boundary tracking and Radon transform...
Acoustic and articulatory cues of Mandarin Chinese vowels were analyzed for `Angry', `Sad', `Happy' and `Neutral' speech by using EMA recordings from a male speaker. The results suggest that: (1) The F0 range and register of four emotions can be grouped into 2 emotional dyads: `Angry' vs. `Happy', and `Sad' vs. `Neutral'; (2) Consistent differences in intonation were found across different emotions...
Table-tennis umpiring presents many challenges where technology can be judiciously applied to enhance decision-making, especially in the service facet of the game. This paper presents a system to automatically detect and track the ball during table-tennis services to enable precise judgment over their legitimacy. The system comprises a suite of algorithms that adaptively exploit spatial and temporal...
In this work we show the use of potential fields in conformal geometric algebra to assist the humanoid manipulation planning. Since the computational unit in conformal geometry algebra is the sphere, it appears natural to use the potential fields for computing navigation trajectories avoiding obstacles. Furthermore, by covering obstacles with convex hulls, one can obtain certain shapes which are amenable...
There are many circular-shaped objects in our daily life. Most of these objects usually are deformed and move in both translational and rotational. Under prospective projection, a circle sometimes deformed into an ellipse. Some ellipse-based tracking algorithms can be used tracking the translation when the contour can be extracted automatically, but the rotation can not be extracted. In this paper,...
This paper presents a novel method for simultaneous pedestrian detection and tracking in image sequences. The motion detection and tracking are addressed in a common framework that employs a geometric active contour model, in which an evolving curve was formulated by the level set method. The pedestrian detection module is started after the curve evolution, which stops the propagating contour on the...
Vision-based vehicle detection is a critical task for traffic monitoring in modern Intelligent Traffic Systems (ITS). Due to the low-angle nature of most traffic surveillance cameras installed in the real world, vehicle detection in such case has to deal with one fundamental challenge - occlusion, which renders most traditional vehicle detection methods ineffective. In this paper, instead of detecting...
Tracking multiple targets in complex situation is challenging. The difficulties are tackled multiple targets with occlusions, especially when multiple involved targets are grouped and moving together in appearance. In this paper, we present a multiple targets tracking system for the management of occlusion problem. The proposed algorithm introduces a geometric shape co-tracking strategy. It decomposes...
Even if the problem of human action categorization from videos has received a lot of attention during the past decade, it remains a challenging problem in operative conditions due to camera motion, occlusion, moving background, illumination changes and the variations of human appearance and postures. In this paper a new motion descriptor, based on a sparse optical flow computed by interest point tracking...
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