基于透视学原理的非等像素间距室外LED屏Unequal Pixel Pitch Outdoor LED Screen Based on Perspective Principle
薛元亭;
XUE Yuanting;Ledman Optoelectronic Co.,Ltd;
摘要(Abstract)：
室外高空的LED屏,在仰视观看过程中,因为有透视的现象,垂直方向视觉像素间距会变小。本文尝试设计一种垂直像素间距大于水平像素间距的LED屏,以达到减少LED灯数量、节约成本的目的。在仰视观看时,能给人以水平、垂直像素间距相等的视觉效果。若在远处观看,又能因人眼角分的局限,看不出图像颗粒感。
When looking at the outdoor LED display installed in a height,because of perspective,the vertical visual pixel pitch will become smaller.This article attempts to design a LED display with vertical pixel pitch> horizontal pixel pitch in order to reduce the number of LEDs and save costs.When looking up,it can give people a visual effect with equal horizontal and vertical pixel pitch.If viewed from a distance,the graininess of the image cannot be seen due to the limitations of the minute of arc of the human eyes.
关键词(KeyWords)：
非等像素间距;室外LED屏;透视;人眼角分
unequal pixel pitch;outdoor LED display;perspective;the minute of arc of the human eyes
基金项目(Foundation):
作者(Authors):
薛元亭;
XUE Yuanting;Ledman Optoelectronic Co.,Ltd;
参考文献(References)：
- [1]夏军.户外LED显示屏设立标准和眩光研究[J].照明工程学报,2015,26(4):91-93.
- [2]李健.视觉造型理论在重庆协信花园俱乐部夜景照明中的应用[J].照明工程学报,2001,12(2):39.
- [3]欧内斯特·诺灵.透视如此简单——20步掌握透视基本原理[M].上海:上海人民美术出版社,2015.
- [4]张扬,李星言.透视技法基础教程[M].北京:化学工业出版社,2019.
- [5]孟凯宁,刘嘉膏,孟颖副.设计透视与产品速写[M].北京:化学工业出版社,2018.
- [6]赵凤奎.人眼的最小分辨视角[J].唐山师范学院学报,2008(5):67-69.
- [7]LED显示屏通用规范:SJT11141—2012[S].
- [8]姚梦,肖辉.核心商区LED显示屏视觉质量评价理论模型研究[J].照明工程学报,2017,28(1):78-82.
- (1)注:在水平大视角观看LED屏时候,LED屏的水平视觉像素间距也有变小的现象。但此观看角度非室外LED屏的主要应用场景,在此不讨论。