Mohamed A. ElHelw

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Visual realism has been a major objective of computer graphics since the inception of the field. However, the perception of visual realism is not a well-understood process and is usually attributed to a combination of visual cues and image features that are difficult to define or measure. For highly complex images, the problem is even more involved. The(More)
—This paper investigates the combined use of ambient and wearable sensing for inferring changes in patient behaviour patterns. It has been demonstrated that with the use of wearable and blob based ambient sensors, it is possible to develop an effective visualization framework allowing the observation of daily activities in a homecare environment. An(More)
— Pervasive healthcare systems provide valuable solution for monitoring elderly wellbeing, quantifying and measuring post-operative patient recovery, and observing the development of neurodegenerative diseases such as Parkinson's. However, developing functional pervasive systems is a complex task that entails the creation of appropriate sensing platforms,(More)
Computer-based surgical simulations are being increasingly used for training and skills assessment. They provide an efficient and cost effective alternative to traditional training methods. To allow for both basic and advanced skills assessment, the required perceptual fidelity is essential to capturing the natural behavior of the operator. The level of(More)
Computer-based simulation is an important tool for surgical skills training and assessment. In general, the degree of realism experienced by the trainees is determined by the visual and biomechanical fidelity of the simulator. In minimally invasive surgery, specular reflections provide an important visual cue for tissue deformation, depth and orientation.(More)
In surgery, virtual and augmented reality are increasingly being used as new ways of training, preoperative planning, diagnosis and surgical navigation. Further development of virtual and augmented reality in medicine is moving towards photorealistic rendering and patient specific modeling, permitting high fidelity visual examination and user interaction.(More)