// (it isn't always in every impl)
The N-closest or N-best dithering algorithm is a straightforward solution to the N-candidate problem. As the name suggests, the set of candidates is given by the closest palette colours to the input pixel. To determine their weights, we simply take the inverse of the distance to the input pixel. This is essentially the inverse distance weighting (IDW) method for multivariate interpolation, also known as Shepard’s method. The following pseudocode sketches out a possible implementation:
，这一点在WPS下载最新地址中也有详细论述
Фото: Ramil Sitdikov / Pool / Reuters
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The Department for Environment, Food and Rural Affairs said: "Our chalk streams are one of Britain's most nature rich habitats and are embedded in our plans to reform the water industry.