![]() The c1919 painting by Burnett Poole ( Figure 2) shows Mauretania in a scheme of blues and grays. Photographs from this period are in black and white, and this has posed difficulties in assessing the true colors in which dazzle ships were painted, in general. Given the large number of vessels involved (over 4,000 merchant ships and 400 military ships from Britain alone, according to Murphy & Bellamy, 2009), the application of dazzle must have impressed the authorities, but whether this strategy was truly effective in practice was never shown it might well have been done more for morale than for saving allied shipping.ĭuring WW1, the four-funnel liner RMS Mauretania was commandeered as a troop ship, and by 1918 she was dressed in dazzle camouflage. It seems that the aim of this striking display was to dazzle the U-boat captains, confusing their assessment of the speed and heading of their targets (e.g., Scott-Samuel, Baddeley, Palmer, & Cuthill, 2011 Hall, Cuthill, Baddeley, Shohet, & Scott-Samuel, 2013). Many schemes used black and white, but blues and pastel colors came to be used in some. During the First World War, merchant ships and their escorts were painted in so-called dazzle camouflage consisting of crazy patterns of stripes and geometric shapes. The purpose of this note is to bring to the attention of the scientific vision community a much older (~100 years) misperception of a rather different carrier of a blue and black (or gray) dress, possibly involving processes of the third kind described above. ![]() The details of all this, including the properties of the fabric and why different people have different priors for the image/illuminant, are being investigated in several vision laboratories across the world, and Journal of Vision is planning a special issue on the subject. (This image is assumed to be public domain.) The blue and black dress that introduced the public to the fact that perception of color is not just about “reading” the RGB of each pixel.
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