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(Color online) Bayer filter array.  

(Color online) Bayer filter array.  

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The study developed a triple-exposure color particle image velocimetry (TE-CPIV) technique associated with pressure reconstruction , and validated its feasibility. A light source with the three primary colors of red, green, and blue (R, G, and B) is produced in a time sequence by a liquid crystal display (LCD) projector. Particle images at three di...

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... filter sensor on every pixel of the CFA panel allows only part of the visible spectrum of light to be recorded [23]. The most commonly used CFA is the Bayer filter array (Figure 3), which has three different kinds of filter sensors designed on the basis of the human visual system. The unit pattern, with a size of 2 pixel× 2 pixel, is diagonally arranged with twice as many green sen- sors as there are red or blue sensors, because human eyes are more sensitive to green color. ...

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Citations

... Particle image density (particle-per-pixel, PPP) divides these two kinds of color illumination into four types. For low PPP images, the use of split colors provides colored multiple layer PTV (Color PTV) (Bendicks et al. 2011;Charonko et al. 2014;Wang et al. 2016Wang et al. , 2017Wang et al. , 2018Aruga et al. 2020) and rainbow-like continuous hue-changing PTV (Rainbow PTV) (Aguirre-Palbo et al. 2017;Park et al. 2021;Noto et al. 2021aNoto et al. , 2021b. For high PPP images, 2D2C velocity vector fields in two or three layers are acquirable (color 3L PIV) (Brucker 1996;Gogineni et al. 1998;De Ponte et al. 2004), which is the approach the present study aims to further improve. ...
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... Instead of high-speed cameras or dual-frame cameras, a consumer digital camera can be used in singleframe PIV and PTV, where particles at different times are recorded in one image (Funatani et al. 2013;Wang et al. 2017;de Silva et al. 2018). The single-frame PIV and PTV often use color cameras and light sources with two or three colors (Gogineni et al. 1998;Estevadeordal et al. 2000;McGregor and Spence 2007;Wang et al. 2017;Funatani et al. 2013;Aguirre-Pablo et al. 2017). ...
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