Cameras embedded in consumer devices have previously been used as physiological information sensors. The waveform of the photoplethysmographic image (PPGi) signals may be significantly affected by the light spectra and intensity. The purpose of this paper is to evaluate the performance of PPGi waveform acquisition in the red, green, and blue channels using a commercial camera in different light...

Digital cameras to reduce cost, use an image sensor to capture color images. Color Filter Array (CFA) in digital cameras permits only one of the three primary (red-green-blue) colors to be sensed in a pixel and interpolates the two missing components through a method named demosaicking. Captured data is interpolated into a full color image and compressed in applications. Color interpolation bef...

Packet networks require queues (buffers) to absorb short term arrival rate fluctuations. Yet network implementors have always observed that queues at bottlenecks tend to fill and stay filled, which contributes extra delay and removes the ability to absorb bursts. In [1] Floyd and Jacobson proposed the RED (Random Early Detection) active queue management algorithm. RED is simple, robust and quit...

Anthocyanins are a group of plant antioxidants known for their therapeutic use. The effects of natural light, red light, and far-red light on individual as well as total anthocyanin content in cranberry fruit (Vaccinium macrocarpon Ait) were examined in an experimental setting designed to mimic water-harvesting conditions. The reversed-phase high performance liquid chromatography (HPLC) method ...

Color light therapy is a therapeutic method in complementary medicine. In color therapy, light of two contrasting colors is often applied in a sequential order. The aim of this study was to investigate possible physiological effects, i.e., changes in the blood volume and oxygenation in the brain and calf muscle of healthy subjects who were exposed to red and blue light in sequential order. The ...

Silicon CCD detectors found in commercial DSLR cameras are responsive far out into the Near Infrared wavelengths. These cameras typically have an Infrared block filter built in to more closely resemble the human visual system. This paper proposes a method for radiometric calibration in order to extract NIR and RED Radiance bands from a Canon 300D with the IR filter removed. With these spectral ...

abstract in this research we have considered the effect of using natural pigment like (beta vulgaris) and (rubia tinctorum) and compound of these two pigments on white angel fish (pterophyllum scalare).. this consideration on 76 white angel fish with average weight of 1.12±0.5gr in 5 treatments including 5 and 10gr madder in kg food, 5 and 10gr red beet per kg food and combined treatment(5gr ma...