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RE294 - Figure 2.9 Binary patterns used in range sensing...

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Unformatted text preview: Figure 2.9: Binary patterns used in range sensing based on ceded pattern trian- gulation. Rather than scanning a light stripe over a scene and processing several im— ages, or dealing with the ambiguities that could result from a multi—stripe image, it is possible to obtain the same amount of information from Hog, N] (where N is the number of bits used in the range quantization) images where the scene is illuminated with 3 series of binary patterns (Figure 2.9). The first pattern with the smallest pitch establishes the least significant bit in the computed range‘ The nut pattern having twice the pitch establishes the next significant bit, and so on. This technique is relatively fast and inexpensive and has been used by Inokuchi et al. [1984], Sato and Inokuchi [1985], Yamamoto et al. [1936], Vuyl- » steke and Oosterlinck [1990], and Boyer and Kak [1987] in their experiments. // _ Binary-encoded light source Figure 11.8: Illustration of binary-coded structured lighting where the se- quence of projections determines the binary code for each stripe. ...
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