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Snapshot hyperspectral retinal camera with the Image Mapping Spectrometer (IMS)

机译:带图像映射光谱仪(IMS)的快照高光谱视网膜相机

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摘要

We present a snapshot hyperspectral retinal camera with the Image Mapping Spectrometer (IMS) for eye imaging applications. The resulting system is capable of simultaneously acquiring 48 spectral channel images in the range 470 nm–650 nm with frame rate at 5.2 fps. The spatial sampling of each measured spectral scene is 350 × 350 pixels. The advantages of this snapshot device are elimination of the eye motion artifacts and pixel misregistration problems in traditional scanning-based hyperspectral retinal cameras, and real-time imaging of oxygen saturation dynamics with sub-second temporal resolution. The spectral imaging performance is demonstrated in a human retinal imaging experiment in vivo. The absorption spectral signatures of oxy-hemoglobin and macular pigments were successfully acquired by using this device.
机译:我们提出了带有图像映射光谱仪(IMS)的快照式高光谱视网膜相机,用于眼睛成像应用。最终的系统能够以5.2 fps的帧速率同时采集470 nm至650 nm范围内的48个光谱通道图像。每个测量的光谱场景的空间采样为350×350像素。该快照设备的优点是消除了传统的基于扫描的高光谱视网膜相机中的眼睛运动伪影和像素重合失调问题,以及具有亚秒级时间分辨率的氧饱和度动态实时成像。在体内的人类视网膜成像实验中证明了光谱成像性能。通过使用该装置成功地获得了氧合血红蛋白和黄斑色素的吸收光谱特征。

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