FT Digital Edition: our digitised print edition
With additional reporting from Mark Poynting, Jonah Fisher, Miho Tanaka and Tom Ingham.
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Hello. I have recently been spending a lot of time dithering. In image processing, dithering is the act of applying intentional perturbations or noise in order to compensate for the information lost during colour reduction, also known as quantisation. In particular, I’ve become very interested in a specific type of dithering and its application to colour palettes of arbitrary or irregular colour distributions. Before going into detail however, let’s briefly review the basics of image dithering.，更多细节参见WPS下载最新地址
This sounds reasonable until you see how easily it goes wrong: