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首页> 外文会议>SPIE Conference on Color Imaging : Displaying, Processing, Hardcopy, and Applications >Spectral matching imager with three-phase quadrature detection
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Spectral matching imager with three-phase quadrature detection

机译：具有三相正交检测的光谱匹配成像器

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摘要

This paper proposes a spectral matching imager with a novel three-phase quadrature detection method. The proposed imager consists of the time-domain correlation image sensor (CIS) and a high-speed programmable spectral light source (PSLS) to produce the correlations between each of a quadrature pair of reference spectral functions and spectral functions of objects. This is realized by modulating the object spectra into temporal signals with the PSLS and then producing temporal correlations with reference signals at each pixel of the CIS. The object that has the same spectral function as the target spectral function is detected as a vector with an azimuthal angle of zero projected onto the two-dimensional (2-D) space spanned by the reference spectral functions. The proposed method can estimate the correlation coefficient between the object and reference spectra more reliably in a 2-D space than previous 1-D spectral matching methods, by factoring out the norm of the object spectral function. Experimental results for a color chart confirm the effectiveness of the proposed method.
机译：本文提出了一种具有新型三相正交检测方法的光谱匹配成像仪。所提出的成像器由时域相关图像传感器（CIS）和高速可编程光谱光源（PSL）组成，以产生与对象的正交参考谱函数和频谱函数之间的每一个之间的相关性。这是通过用PSL调制到时间信号中的对象光谱来实现，然后与CI的每个像素的参考信号产生时间相关性。具有与目标光谱函数相同的光谱功能的对象被检测为具有引入由参考光谱函数跨越的二维（2-D）空间的方位角零的方位角的向量。该方法可以通过解析出对象谱函数的规范，更可靠地估计对象和参考光谱之间的相关系数和参考光谱比之前的1-D光谱匹配方法。彩色图表的实验结果证实了该方法的有效性。

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