Following the initial development of the scintillation camera by Anger (1), further improvements and innovations have led to its extensive use in such areas as diagnostic oncology, organ deliniation, and physiological function studies. Indeed, in the last few years, the scintillation camera has evolved to serve a variety of applications in the medical field (2). The development of a one-dimensi...

This paper discusses a 2(1/2)-D tracking method allowing real-time recovery of the three-dimensional (3-D) position and orientation of a head moving in its image plane. The described method uses a two-dimensional (2-D) elliptical head model, regionand edge-based matching algorithms, and a linear Kalman filter estimator. The resulting motion tracking system works in a realistic environment witho...

Computer Vision has been a very new field developing rapidly in recent years. One of the main advantages in this development is that the “human vision” abilities such as electronically perceiving and understanding of images are provided to apply to autonomous vehicles or mobile robots. In this paper, detection of obstacle and freespace in an autonomous wheelchair using a stereoscopic camera sys...

Abstract Blender is an open-source three-dimensional animation software, which can be used as a simulation tool in metrology, to build numerical models that the design and optimisation of camera-based measurement systems. In this work, relevance using model systems was explored. Two experiments were conducted real-world modelled environments, one individual cameras for simple task, other consid...

Ultrasonic imaging is a powerful nondestructive evaluation (NDE) tool for flaw characterization. This thesis discusses the signal processing techniques developed for ultrasonic imaging of flaws in composite laminates. Commonly used time-domain signal processing techniques have problems including poor resolution, dependence on operator's experiences and subjectivity. Some transform-domain proces...

  This paper concerns the problem of robust stabilization of uncertain fractional-order non-autonomous systems. In this regard, a single input active control approach is proposed for control and stabilization of three-dimensional uncertain fractional-order systems. The robust controller is designed on the basis of fractional Lyapunov stability theory. Furthermore, the effects of model uncertai...