Hossein Afshari

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A new biologically-inspired vision sensor made of one hundred " eyes " is presented, which is suitable for real-time acquisition and processing of 3-D image sequences. This device, named the Panoptic camera , consists of a layered arrangement of approximately 100 classical CMOS imagers, distributed over a hemisphere of 13 cm in diameter. The Panoptic camera(More)
—Panoptic is a custom spherical light field camera used as a polydioptric system where imagers are distributed over a spherical geometry, each having its own vision of the surrounding and a distinct focal plane. The spherical light field camera records light information from any direction around its center. A novel Gaussian blending technique is presented(More)
A custom spherical light-field camera used as a polydioptricsystem where imagers are distributed over a spherical geometry, each having its own vision of the surrounding and distinct focal plane. The spherical light-field camera is also an omnidirectional camera which records light information fro many direction around its center. A novel linear blending(More)
Salinity, a severe environmental factor, has limited the growth and productivity of crops. Many compounds have been applied to minimize the harmful effects of salt stress on plant growth. An experiment was conducted to investigate the interactive effects of exogenous ascorbic acid (AsA) and gibberellic acid (GA3) on common bean (Phaseolus vulgaris L. cv.(More)
Panoptic is a custom spherical light field camera used as a polydioptric system where imagers are distributed over a hemispherical surface, each having its own vision of the surroundings and a distinct focal plane. The spherical light field camera records light information from any direction around its center. This paper revises previously developed Nearest(More)
Omnidirectional stereoscopy and depth estimation are complex problems of image processing to which the Panoptic camera offers a novel solution. The Panoptic camera is a biologically-inspired vision sensor made of multiple cameras. It is a polydioptric system mimicking the eyes of flying insects where multiple imagers, each with a distinct focal point, are(More)
The optimal operation of many building services (including HVAC) requires computational resources that are not necessarily available in commercial building management systems (BMS). Having this computational power available in a dedicated data center will ease the deployment of these algorithms, but raises several issues having mostly to do with getting the(More)
Model-predictive control (MPC) has shown in the past great potential for optimising the operation of heating control systems in buildings, but the major drawback has always been the automatic identification of the system itself. In this work we report on field tests of a heating control system derived from previous research work at EPFL, implementing MPC(More)