FT Digital Edition: our digitised print edition
Under certain circumstances, it’s possible to modify ordered dithering so that it can better handle colour information. This requires that we use a palette that is regularly distributed in colour space. A regular palette is composed of all possible combinations of red, green and blue tristimulus values, where each colour component is partitioned into a number of equally spaced levels. For example, 6 levels of red, green and blue totals 6³ = 216 unique colours, equivalent to the common web-safe palette.。关于这个话题，Line官方版本下载提供了深入分析
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It was ordered after a letter, understood to have been written by a former Wembley employee, raised concerns about safety measures.，详情可参考Line官方版本下载