| 基于傅里叶变换的LED单元板均匀性评价方法 |
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| 引用本文： | 何金朋,李阳阳,刘罡. 基于傅里叶变换的LED单元板均匀性评价方法[J]. 电子科技, 2013, 26(9): 169-171,184 |
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| 作者姓名： | 何金朋 李阳阳 刘罡 |
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| 作者单位： | (西安电子科技大学 技术物理学院,陕西 西安 710126) |
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| 摘 要： | 亮度均匀性是LED单元板图像质量评价的一项重要指标,而现有的均匀性评价方法存在测量精度低、评价结果不全面等缺点。文中对LED单元板的均匀性评价方法进行了改进,利用傅里叶变换的方法对单元板的均匀性做出了更加合理的评价。利用此方法不仅将灯点的亮度差考虑在内,而且考虑了灯点的位置,因此评价更接近实际。
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| 关 键 词： | LED单元板 均匀性 方差 傅里叶变换 |
Method for Uniform Evaluation of LED Unit Board Based on Fourier Transform |
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| HE Jinpeng , LI Yangyang , LIU Gang. Method for Uniform Evaluation of LED Unit Board Based on Fourier Transform[J]. Electronic Science and Technology, 2013, 26(9): 169-171,184 |
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| Authors: | HE Jinpeng LI Yangyang LIU Gang |
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| Affiliation: | (School of Technical Physics,Xidian University,Xi'an 710126,China) |
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| Abstract: | The luminance uniformity is an important indicator in the LED unit board image quality evaluation.The existing evaluation methods have the disadvantages of complicated operation and low accuracy.In this article,the uniformity of the LED unit board evaluation method is improved by using the Fourier transform to make a more reasonable evaluation of the uniformity of the light board.This method considers not only the difference in brightness of the lights point,but also the location of the point of the lights,thus a more realistic evaluation. |
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| Keywords: | LED unit board uniform variance fourier transform, |
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