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A myoelectric prosthesis, which can be used as a replacement for a person's upper limb, is able to control many hand motions optionally via surface electromyography (sEMG). Although many researchers have developed myoelectric prostheses that realize various motions, evaluation of their practicality has only been carried out on small numbers of patients. To solve this problem, a myoelectric prosthesis...
3D object selection and manipulation is one of the essential features for any augmented reality (AR) system. However, distant object selection and manipulation still suffer from lack of accuracy and precision. This paper introduces an alternate 3D interaction technique for selection and manipulation distant 3D object in in immersive video see-through AR. The proposed interaction technique offers a...
In this article, we focus on how to fuse two systems between SLAM and UAV. The main contribution is that using the UAV attitude controller provides a reliable initial value for the SLAM system, which makes the direct method of SLAM more quickly and effective converge. The UAV position controller increases the stability by receiving the exact local information from SLAM. That allows two independent...
A calibration method for vision sensor system is proposed, this method use checkerboard as the target which is folded out of an angle, and using several point pairs to obtain the optimal matrix, point pairs come from the world and the corresponding pixel image coordinate system, and then camera's all parameters can be obtained by factorizing this matrix. Calibration can be done using only one image...
The increasing scale of Structure-from-Motion is fundamentally limited by the conventional optimization framework for the all-in-one global bundle adjustment. In this paper, we propose a distributed approach to coping with this global bundle adjustment for very large scale Structurefrom-Motion computation. First, we derive the distributed formulation from the classical optimization algorithm ADMM,...
Finding a closed form solution to a system of polynomial equations is a common problem in computer vision as well as in many other areas of engineering and science. Gröb-ner basis techniques are often employed to provide the solution, but implementing an efficient Gröbner basis solver to a given problem requires strong expertise in algebraic geometry. One can also convert the equations to a polynomial...
Body Condition Scoring (BCS) is a method of evaluating fatness or thinness in cows, and it is important to manage productivity of the cows. However, it is not easy to measure BCS by observing animals because it consumes much time and costs, especially in the large-scale farming. Therefore, almost farmers are not conducting regular evaluation of BCS. In this paper, we propose the noninvasive method...
Infrared thermography has been widely used today for nondestructive evaluation and testing of materials and other qualitative approaches. However, the field of thermography is much less developed. Most of the existing research uses a relatively simple model, while more realistic models are currently in development. One interesting scenario for thermography is determining the material composition of...
At the core of many Computer Vision applications stands the need to define a mathematical model describing the imaging process. To this end, the pinhole model with radial distortion is probably the most commonly used, as it balances low complexity with a precision that is sufficient for most applications. On the other hand, unconstrained non-parametric models, despite being originally proposed to...
The system is specially developed for elderly people living alone in their homes. A novel method for detection of fall in home environment is presented. Video clips of certain duration specifying fall and non-fall activities are considered for experimentation. Shi-Tomasi algorithm is used to find interest points which are tracked by Pyramidal Lucas-Kanade algorithm. The speed and direction of motion...
In the article a new optimization approach for thermal processes modeling has been presented. In the designed method, the considered process is monitored by a measurement system with a thermal camera. Then, a spatio-temporal dynamics is discretized and transformed into a large-scale optimization problem with differential-algebraic constraints. To preserve the process dynamics in the assumed range,...
The paper sets out and presents a new approach to determine the shape of the flaccid membrane of the extracorporeal pneumatic heart assist pump. This is a continuation of earlier work on the use of image processing and analysis techniques to determine the membrane shape of an artificial ventricle. The study focused on the membrane shape mapping in the actual dimensions — in the real world. The method...
Our aim is to consider a model-based approach to control of image-driven control systems, i.e., the systems in which images play the role of system states. As a tool for describing such systems we have selected n × n matrix state equations. For linear, time invariant systems we prove necessary and sufficient controllability and asymptotic stability conditions that can be efficiently verified by considering...
Person re-identification is a topic which has potential to be used for applications within forensics, flow analysis and queue monitoring. It is the process of matching persons across two or more camera views, most often by extracting colour and texture based hand-crafted features, to identify similar persons. Because of challenges regarding changes in lighting between views, occlusion or even privacy...
Recent studies have shown that panchromatic colour filter arrays possess better light intensity properties than the more prevalent Bayer array. This is an attractive property in integrated camera design. Demosaicking algorithms, however, focus primarily on Bayer-based cameras because of their simple demosaicking process. This paper presents a novel algorithm for use in the RGBW class of panchromatic...
Practically, today most mobile devices, such as robots require to have ability to determine their pose (location and orientation) from low-cost sensors with high accuracy. This paper presents a novel fusion method to determine the pose estimation of an autonomous mobile robot using inertial sensors and a camera. Speeded up robust features (SURF) is used as a visual algorithm to detect natural landmarks...
To ensure safety and reliability, compliance to rail regulations and efficient predictive maintenance, regular condition assessment needs to be carried out on the railway infrastructure. The consequence of not carrying out condition assessment measurement results in poor knowledge of track conditions that should trigger maintenance and rehabilitation interventions. With the introduction of higher...
Provision of reliable traffic data could cause a reduction of the traffic problem. In a previous paper, the authors developed the core of RIMAC, an information system that allows the introduction of new and reliable sources of information from camcorders, traffic lights or mobile phones. With these new data sources, RIMAC is able to provide many more realistic reports. This paper describes the development...
The Laser Arc Image System (LAIS) provides unprecedented real-time, frame by frame visualization into the micro-second dynamic arc processes consisting of the heat and mass transfer between the electric contacts. These resulting high-speed images and data from the LAIS experiments serve as the empirical analytical tools for understanding the instantaneous arcing behavior, a phenomenon that have only...
Surveillance video cameras have been increasingly deployed on roadway networks providing important support for roadway management. While the information-rich video images are a valuable source of traffic data, these surveillance video cameras are typically designed for manual observation of roadway conditions and are not for automatic traffic data collection. The benefits of turning these surveillance...
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