淺談國際標準色差 - 螢幕
By George
at 2013-06-25T10:22
at 2013-06-25T10:22
Table of Contents
淺談國際標準色差 (真的很淺)
眼前的黑不是黑,你說的白是什麼白,人們說的天空藍,是我記憶中那團白雲背後的藍天
、、、
注重色彩的人對”你是我的眼”這一段應該有很深的感觸吧!色彩是一種主觀感知,每個
人對於色彩認知、感受不同。
測試一下你對於色彩的敏感度:
http://www.xrite.com/online-color-test-challenge
國際照明委員會為了定義色彩,找了一群人做色彩感知上的統計,定義出標準色彩。有了
國際標準色之後,人們發現要把人造色彩做到跟國際標準色定義一模一樣,幾乎不可能!
色彩差異變成了一個問題,差多少人眼不會發現?光學數值上的差異與人眼的感知是否一
致?為了量化人眼的感受程度,國際照明委員會又經過一翻統計,定義出國際標準色差
DeltaE的計算公式,而這個計算公式有時還是無法精確描述出人眼對於色差的感知,所以
此公式歷年來不斷的修正,才有DeltaE 76、DeltaE 94、DeltaE 2000等規格出現(76、94
、2000分別代表訂義的年份)。
有了國際標準色差公式後,便可定義差多少是可以接受的,差值越小代表越精準。一般而
言,DeltaE差1以內,是人眼感受不到的差異;3以內,是人眼幾乎感受不到;6以內,是
未經比較,人眼不容易察覺有異;6以上是人眼未經比較即可察覺色彩有異。
專業顯示器一般要求是Delta E小於等於5,而部份高單價專業顯示器會提出平均DeltaE小
於3的規格。
--
我們的臉書:http://ppt.cc/gk~o (或臉書直接搜尋 瓦晰科技)
我們的部落格:http://tw.myblog.yahoo.com/wasytech
上述網址,內容除了公司介紹外,主要是一些色彩知識上的觀念分享。
(醫療顯示器、專業顯示器、顯示器校正、螢幕校色、色彩校準、
色彩管理、Delta E、DeltaE、DeltaE94、CMYK、sRGB、Adobe RGB)
--
--
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螢幕
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