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像素

出自維基百科,自由嘅百科全書

像素英文pixel粵拼pik1 sou4本字 picture element,意思係 「圖像元素」)係指點陣圖當中嘅一點。

幾何學嘅點係冇面積、冇大細嘅概念,但係像素係有面積、有大細、有形狀嘅實體,而形狀亦未必係正方,而係有可能係長方嘅(例如早期嘅 Apple II 用嘅就係長方形嘅像素),所以例如 Photoshop 等等嘅圖像編輯軟件亦有處理長方形像素嘅機制,不過因為而今用嘅像素通常係正方,爾種機制好少用。


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