基于光强相关的真彩色夜视相关成像
True color night vision correlated imaging based on intensity correlation of light
摘要：
夜视成像是在夜间等弱光环境下，将人眼不可见的物体转换成可见图像的技术。然而，传统的夜视成像只能直接产生灰度图像。本文提出了一种基于光强相关性的夜视成像方法。利用光的空间强度相关性，将红外非可见光探测到的目标信息用可见光来表示。该方法不需要伪彩色图像处理，数据处理简单，可直接生成彩色夜视图像。理论和实验结果表明，该方法可以获得与经典可见光成像质量相当的彩色夜视图像。令人惊讶的是，重建的夜视图像的色彩丰富度指数明显优于传统的可见光图像和伪彩色夜视图像。虽然重建的图像不能完全恢复物体的自然颜色，但该方法得到的彩色图像比其他伪彩色图像处理方法得到的图像更具有自然感。
英文摘要：
Night vision imaging is a technology that converts non-visible object to human eyes into visible image in night and other low light environments. However, the conventional night vision imaging can only directly produce grayscale image. Here, we propose a novel night vision imaging method based on intensity correlation of light. The object's information detected by infrared non-visible light is expressed by visible light via the spatial intensity correlation of light. With simple data processing, a color night vision image can be directly produced by this approach without any pseudo-color image processing. Theoretical and experimental results show that a color night vision image comparable to classical visible light imaging quality can be obtained by this method. Surprisingly, the color colorfulness index of the reconstructed night vision image is significantly better than that of the conventional visible light image and pseudo-color night vision image. Although the reconstructed image can not completely restore the natural color of the object, the color image obtained by this method is more natural sense than that obtained by other pseudo-color image processing methods.
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