浏览全部资源
扫码关注微信
中国科学院 长春光学精密机械与物理研究所,吉林 长春,中国,130033
收稿日期:2012-09-03,
修回日期:2012-10-09,
网络出版日期:2013-05-24,
纸质出版日期:2013-05-15
移动端阅览
丁柏秀 郑喜凤 陈宇 苗静 桂劲征. 发光二极管显示屏CCD图像的修正[J]. 光学精密工程, 2013,21(5): 1318-1325
DING Bo-xiu ZHENG Xi-feng CHEN Yu MIAO Jing GUI Jin-zhen. Revision of LED Display Images Acquired by CCD Camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1318-1325
丁柏秀 郑喜凤 陈宇 苗静 桂劲征. 发光二极管显示屏CCD图像的修正[J]. 光学精密工程, 2013,21(5): 1318-1325 DOI: 10.3788/OPE.20132105.1318.
DING Bo-xiu ZHENG Xi-feng CHEN Yu MIAO Jing GUI Jin-zhen. Revision of LED Display Images Acquired by CCD Camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1318-1325 DOI: 10.3788/OPE.20132105.1318.
提出了一种有效的图像修正方法,用于修正用彩色CCD相机采集的LED显示屏图像。首先,利用均匀标准白板逐像素点法对制造工艺使彩色CCD相机产生的曲面进行渐晕修正;然后,利用LED管芯配光曲线的分布规律修正由于相机采集位置的影响产生的偏差,并给出了修正原理和修正的过程;最后,给出了实验数据及结论。修正后,红、绿、蓝基色的均匀性均方差分别从4.0%减少到1.48%,从3.1%减少到1.36%,和从3.5%减少到1.39%。利用该方法修正过的LED图像既消除了相机本身的曲面产生的渐晕,又消除了由于相机采集角度的影响产生的偏差,是一种非常有效的LED显示屏CCD图像的修正方法,实验结果基本符合修正的要求。
An efficient revising method was proposed to revise the display images of a Light Emission Diode(LED) captured by a color CCD camera. Firstly
the uniform standard white board was used to revise the vignetting phenomenon caused by a curved surface of color CCD camera in the manufacturing process. Then
on the basis of the distribution regularity of the lighting distribution curve of the LED
the deviation of LED itself caused by the camera position was revised also. The revising theory and revising process were described. Finally
relative data and conclusion were given. It shows that the uniform mean-square deviations of red
green and blue primaries have been decreased from 4.0% to 1.48%
3.1% to 1.36%
and 3.5% to 1.39%
respectively
after revising. It is shown that this method is an efficient one. It not only eliminates the vignetting phenomenon caused by the curved surface of the camera itself
but also removes the deviation caused by the capturing angle of the CCD camera. The experimental results meet the requirements of image revising basically.
何凯,唐平凡,王成优. 基于高斯曲面拟合的影像偏差修复方法 [J]. 电子学报,2009,37(1):67-71.HE K, TANG P F, WANG C Y. Vignetting correction method of image based on gaussian quadrics fitting [J]. Acta Eelectronica Sinica, 2009,37(1):67-71. (in Chinese)[2]何凯,赵红颖,刘晶晶. 航空遥感影像偏差复原方法 [J]. 吉林大学学报,2007,37(6):1447-1450.HE K, ZHAO H Y,LIU J J. Vignetting correction method for aviatic remote sensing image [J]. Journal of Jilin University,2007,37(6):1447-1450. (in Chinese)[3]李炜,黄心汉,王敏,等. 基于二维高斯曲面拟合的图像灰度补偿算法 [J]. 华中科技大学学报:自然科学版,2004,32(2),43-45.LI W, HUANG X H, WANG M, et al.. A compensation algorithm of image based on gaussian quadrics fitting [J]. Huazhong Univ. of Sci. &Tech.:Nature Science Edition, 2004,32(2),43-45. (in Chinese)[4]冯强,霍俊彦,杨海涛,等. 一种新颖的图像抗偏差技术 [J]. 电子科技,2007,217(10):67-71.FENG Q,HUO J Y, YANG H T, et al.. A nonel image anti-vignetting method [J]. Electronic Sci.&Tech, 2007,217(10):67-71. (in Chinese)[5]张鑫,王瑞光,陈宇,等. LED显示屏相机采集影像偏差的修正 [J]. 光学 精密工程,2010,18(11):2332-2338.ZHANG X,WANG R G,CHEN Y, et al.. Calibration of image vignetting acquired by camera on LED display panel [J]. Opt. Precision Eng.,2010,18(11):2332-2338. (in Chinese)[6]金鹏,喻春雨,周奇峰,等. LED在道路照明中的光效优势 [J]. 光学 精密工程, 2011,19(1):51-55.JIN P,YU CH Y, ZHOU Q F, et al.. Superior application of LED to street lighting [J]. Opt. Precision Eng., 2011, 19(1): 51-55. (in Chinese)[7]屠大维,吴仍茂,杨恒亮,等. LED封装光学结构对光强分别的影像 [J]. 光学 精密工程,2008,16(5):2332-2338.TU D W,WU R M,YANG H L, et al.. Effect of optical structure on output light intensity distribution in LED package [J]. Opt. Precision Eng.,2008,16(5):2332-2338. (in Chinese)[8]常锋,孙志远,王瑞光,等. LED显示图像的非均匀度校正改进方法 [J]. 光学 精密工程,2011,19(4):929-937. CHANG F,SUN ZH Y, WANG R G, et al.. Improvement of nonuniformity correction of LED display iamges [J]. Opt. Precision Eng., 2011,19(4):929-937. (in Chinese)[9]任豪,王巧彬,李康业,等. LED光源光强空问分布特性的快速测试 [J]. 光学仪器,2008,30(6):6-9.REN HAO,WANG Q B,LING K Y, et al.. Fast-measurem ent on intensity spatial distribution characteristics of LED [J]. Optical Instrument, 2008,30(6):6-9. (in Chinese)[10]罗红娥,陈平,顾金良,等. 线阵CCD测量系统的镜头畸变校正新方法 [J]. 半导体光电,2009,30(3):441-443.LUO H E,CHEN P, GU J L, et al.. A new method of lens distortion calibration of linear CCD measurement system [J]. Semiconductor Optoelectronics, 2009,30(3):441-443. (in Chinese)
0
浏览量
158
下载量
6
CSCD
关联资源
相关文章
相关作者
相关机构