Current office lighting recommendations stress the importance of vertical surface illumination over horizontal desktop illumination for VDT work, where the occupant is primarily in a “heads up” position. We investigated this recommendation by creating two very different lighting conditions in two workstations in a mock-up open-plan office space. One workstation was provided with conventional, d...

aims: work proper lighting means a safe, healthy and comfort conditions for work under a lighting system that includes qualitative and quantitative features. this study aimed to evaluate the surface local lighting of works and eye fatigue among research and development staffs of an automotive industry. instrument & methods: in this descriptive study in research and development department of an ...

In this study, we evaluated chlorophyll fluorescence (CF) under two extreme 13 illumination conditions at plant scale with a passive spectroradiometer. Fluorescence (F) was 14 estimated by reading directly from radiance spectra of a variety of plants illuminated with 15 light-emitting diode (LED) grow lights in the laboratory. Solar-induced fluorescence (SIF) was 16 estimated from spectral meas...

This paper describes object recognition under various lighting conditions for a robot which finds a user-specified object and brings it to the user. The system first constructs object models under a known lighting condition. Because the lighting condition in model construction is different from that in object recognition, the system needs to transform the model’s color for the current lighting ...

This paper presents a novel method for detecting human faces in an image with complex backgrounds. The approach is based on visual information of the face from the template image and is commenced with the estimation of the face area in the given image. As the genetic algorithm is a computationally expensive process, the searching space for possible face regions is limited to possible facial fea...