WO2016197670A3 - 一种梯形校正方法和投影机 - Google Patents

一种梯形校正方法和投影机 Download PDF

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Publication number
WO2016197670A3
WO2016197670A3 PCT/CN2016/077711 CN2016077711W WO2016197670A3 WO 2016197670 A3 WO2016197670 A3 WO 2016197670A3 CN 2016077711 W CN2016077711 W CN 2016077711W WO 2016197670 A3 WO2016197670 A3 WO 2016197670A3
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WO
WIPO (PCT)
Prior art keywords
tilt
projector
image
keystone correction
areas
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PCT/CN2016/077711
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English (en)
French (fr)
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WO2016197670A2 (zh
Inventor
曾慧鹏
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016197670A2 publication Critical patent/WO2016197670A2/zh
Publication of WO2016197670A3 publication Critical patent/WO2016197670A3/zh

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  • Transforming Electric Information Into Light Information (AREA)
  • Projection Apparatus (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

本文公布一种梯形校正方法和投影机，所述方法包括：通过摄像头获取投影机投射纯色光时输出的图像；计算所述图像在水平方向上N个区域的灰度参数；其中，所述N个区域是根据预设规则在水平方向上划分所述图像得到的，N为大于或等于2的正整数；根据所述N个区域的灰度参数确定所述图像对应的倾斜方向和倾斜系数；根据所述倾斜系数以及预存的倾斜角度与倾斜系数的对应关系数据确定所述倾斜系数对应的倾斜角度；根据所述倾斜方向和所述倾斜角度对所述投影机进行水平梯形校正。
PCT/CN2016/077711 2015-11-25 2016-03-29 一种梯形校正方法和投影机 WO2016197670A2 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510830311.5A CN106791736B (zh) 2015-11-25 2015-11-25 一种梯形校正方法和投影机
CN201510830311.5 2015-11-25

Publications (2)

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WO2016197670A2 WO2016197670A2 (zh) 2016-12-15
WO2016197670A3 true WO2016197670A3 (zh) 2017-02-09

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WO (1) WO2016197670A2 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110769231B (zh) * 2019-08-02 2021-10-22 成都极米科技股份有限公司 基于梯形矫正的投影画面光均匀度控制方法及控制系统
CN110769235B (zh) * 2019-09-30 2021-02-05 深圳市火乐科技发展有限公司 一种梯形校正的方法及产品

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391778A1 (en) * 2002-08-08 2004-02-25 Seiko Precision Inc. Apparatus for detecting the inclination angle of a projection screen and projector comprising the same
CN101923710A (zh) * 2010-06-30 2010-12-22 青岛海信网络科技股份有限公司 图像倾斜校正方法及装置
CN102998885A (zh) * 2012-11-20 2013-03-27 芜湖雅图数字视频技术有限公司 对投影仪投影图像失真校正的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391778A1 (en) * 2002-08-08 2004-02-25 Seiko Precision Inc. Apparatus for detecting the inclination angle of a projection screen and projector comprising the same
CN101923710A (zh) * 2010-06-30 2010-12-22 青岛海信网络科技股份有限公司 图像倾斜校正方法及装置
CN102998885A (zh) * 2012-11-20 2013-03-27 芜湖雅图数字视频技术有限公司 对投影仪投影图像失真校正的方法

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CN106791736B (zh) 2020-05-15
CN106791736A (zh) 2017-05-31
WO2016197670A2 (zh) 2016-12-15

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