光电子技术, 2012, 32 (1): 52, 网络出版: 2012-07-02  

高动态范围图像采集及其双屏显示系统研究

Acquisition of High Dynamic Range Image and A Research on Dual-display System
作者单位
福州大学物理与信息工程学院, 福建 福州 350002
摘要
为了更真实再现大范围亮度,获得更接近于真实的画面效果,设计并实现了高动态范 围图像采集及其双屏显示系统。首先,研制了基于液晶光阀的光强连续选通成像系统,以实现高动 态范围图像采集;其次,通过扩展动态范围图像处理算法将其合成高动态图像;最后,以液晶屏和 LED组合作为显示源,双屏叠加,从而显示高动态范围图像。实验证明,所设计的系统图像对比度 达到10 000:1以上,功率减少了 60. 2%,LED亮度均匀性在95%以上。
Abstract
Α high dynamic range image acquisition and dual-display systems were designed and implemented to reproduce a large range of brightness and get closer to the real picture effect. Based on liquid crystal,a continuous light valve was produced to achieve high dynamic range scenes,which are composited via extending the range of dynamic image,of which a high one was showed through combining LCD and LED displays as the source and overlaying the dual-display. Experiments show that the image contrast ratio of the system is above 10,000:1,a 60. 2 % power reduction and a LED brightness uniformity of above 95% are achieved.

尤云彬, 姚剑敏, 张越, 蔡荔敏. 高动态范围图像采集及其双屏显示系统研究[J]. 光电子技术, 2012, 32(1): 52. You Yunbin, Yao Jianmin, Zhang Yue, Cai Limin. Acquisition of High Dynamic Range Image and A Research on Dual-display System[J]. Optoelectronic Technology, 2012, 32(1): 52.

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