In the last years, a lot a research have been done in the field of inverse lighting (and, in a neighbouring domain: inverse rendering – or relighting). However the proposed tools for inverse lighting are not intuitive or are too limited. Our aim is to present a framework for a declarative specification of the lighting of a scene. The concepts and properties relevant to a qualitative description...

In accordance with the specifications for the design of the gas station lighting system, the original lighting system was transformed into the overall solar-powered LED lighting system. The original lighting was replaced by using the same illumination LED lamps. Calculations were made to determine the optimum tilt angle of solar components. Based on the reasonable LOLP rate, solar module and ba...

It is commonly believed that humans exhibit lighting invariant object recognition. Here we present psychophysical evidence to the contrary. We examine the perception of qualitative local shape from shading and find that significant variations occur as a function of the lighting. These variations have two logically distinct causes: first, there are inherent ambiguities between shape and shading ...

With the kind permission of Leisure and Cultural Services Department (LCSD), Energy Efficiency Office (EEO) of Electrical and Mechanical Services Department (EMSD) completed a pilot lighting project in 2002 at Kowloon Bay Indoor Games Hall (KBIGH). The new lighting system made use of the latest T5 lighting technology for illuminating the high ceiling games hall. As compared with the existing hi...

During the past decade, residential consumers’ adoption of energy-efficient lighting has increased slowly in the United States. To identify residential consumers’ attitudes and behaviors toward the adoption of energy-efficient lighting, this study examined gender differences in (1) residential consumers’ environmental behaviors in relation to lighting practice and (2) background variables of en...

Light emitting diodes (LEDs) and SSL (solid state lighting) are relatively new light sources, but are already widely applied for outdoor lighting. Despite this, there is little available information allowing planners and designers to evaluate and weigh different sustainability aspects of LED/SSL lighting when making decisions. Based on a literature review, this paper proposes a framework of sus...

The adoption of energy efficiency measures in building codes places constraints on lighting designers that they fear will reduce the quality of the lit environment. This experiment was designed to test the hypothesis that lighting quality, as understood by lighting designers, affects the task performance, mood, comfort, health, and aesthetic judgements of office workers. Nine lighting systems w...

This research is in the form of emergency lights and security equipment room using Arduino which made to assist community making it easier activate/deactivate avoid any danger as soon possible a special room. system by designing, manufacturing implementing components that include microcontroller controller an LCD output display status ADC values from sensors, AC LED lighting, DVR Camera record ...

We present a novel 3D face reconstruction technique that leverages sparse photometric stereo (PS) and latest advances on face registration/modeling from a single image. We observe that 3D morphable faces approach[15] provides a reasonable geometry proxy for light position calibration. Specifically, we develop a robust optimization technique that can calibrate per-pixel lighting direction and il...