1.0尊正资讯https://zunzheng.com/news明视觉特性与暗视觉特性（二） - 尊正资讯rich600338<blockquote class="wp-embedded-content" data-secret="z9tbP4IUyC"><a href="https://zunzheng.com/news/archives/16302">明视觉特性与暗视觉特性（二）</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://zunzheng.com/news/archives/16302/embed#?secret=z9tbP4IUyC" width="600" height="338" title="《 明视觉特性与暗视觉特性（二） 》—尊正资讯" data-secret="z9tbP4IUyC" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
/* <![CDATA[ */
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
/* ]]> */
</script>
https://zunzheng.com/news/wp-content/uploads/mlib/2019/09/23/技术前沿.jpg12004011924年国际照明委员会（CIE）规定了明视觉特性曲线，1951年规定了暗视觉特性曲线，两种视觉特性如图所示。CIE明视觉特性和暗视觉特性曲线在色度学中分别称为“CIE明视觉标准光度观察者”和“CIE暗视觉标准光度观察者”，它们代表光谱中不同波长的能量对人眼产生光感觉的效率，虽然两条曲线的明亮度相差很大，但为了方便使用，CIE将两条曲线进行了归一化处理，使明视觉函数和暗视觉函数均成为相对值。