Detailed simulations of lighting and HVAC energy consumption were performed on a prototype office building in six North American climates. The goal of these simulations was to calculate the overall energy savings attributable to reductions in lighting power density (LPD) from 25.8 W/m (past practice) to 17.2 W/m (current code) to 8.6 W/m (low). Results showed that as LPD decreases, reductions i...

Shadows have been one of the most serious problems for vegetation segmetation, espescially under conditions of natural random airflow and human or vehicle disturbance. A video sequence processing method has developed in this paper to identify and eliminate crop shadows. The method comprises pixel models and algorithms explained in a probable learning framework. Expectation maximization (EM) for...

The paper presents the advantages of using a single one-phase PLC (Power Line Communications) modem for last-mile communications over the three-phase LV network, which is dedicated to supply road and street Smart Lighting system. The main benefits of the proposed solutions are more reliable traffic concentrators and lower the cost of their construction. Using analytical method or based on the r...

Movie studios often have to choose among thousands of scripts to decide which ones to turn into movies. Despite the huge amount of money at stake, this process, known as “green-lighting” in the movie industry, is largely a guesswork based on experts’ experience and intuitions. In this paper, we propose a new approach to help studios evaluate scripts which will then lead to more profitable green...

An algorithm for speaker's lip motion detection is presented, based on the processing of a colour video sequence of speaker's face under natural lighting conditions and without any particular make-up. It is intended for applications in speech recognition, videoconferencing or speaker's face synthesis and animation. The algorithm is based on a statistical approach using Markov Random Field (MRF)...

Recent spatially varying reflectance (svBRDF) printing systems can reproduce an input document as a combination of matte, glossy and metallic inks. Due to the limited number of inks, this reproduction process incurs some distortion. In this work, we present an svBRDF gamut mapping algorithm that minimizes distortions in the angular and spatial domains. To preserve a material’s perceived variati...

The problem of edge-based classification of natural video sequences containing buildings and captured under changing lighting conditions is addressed. The introduced approach is derived from two empiric observations: In static regions the likelihood of finding features that match the patterns of “buildings” is high because buildings are rigid static objects, and misclassification can be reduced...

Photometric Stereo in outdoor illumination remains a challenging, ill-posed problem. Indeed, it has been shown that the scene structure cannot be recovered unambiguously from the photometric cues alone when it is lit by the sun over the course of a single day. In this paper, we present a CNN-based technique for photometric stereo on a single sunny day. We solve the ambiguity issue by combining ...

We present new forensic tools that are capable of detecting traces of tampering in digital images without the use of watermarks or specialized hardware. These tools operate under the assumption that images contain natural properties from a variety of sources, including the world, the lens, and the sensor. These properties may be disturbed by digital tampering and by measuring them we can expose...