Photonics Research, Volume. 8, Issue 7, 1079(2020)
Great enhancement of image details with high fidelity in a scintillator imager using an optical coding method
Fig. 1. Schematic of an X-ray scintillator imager based on the use of the proposed high-spatial-frequency spectrum enhanced reconstruction (HSFER) method. A two-dimensional (2D) encoder is used to extract the middle-high-frequency and high-frequency components of the image generated in the scintillator. The image is decoded by a PSF/OTF of the encoder.
Fig. 2. (a) Areas below the dashed, dotted, and solid curves represent the parameter zones that allow the
Fig. 3. Experimental setup with the HSFER imager. The fluorescent pattern produced by the X rays through the sample was first encoded by a 2D encoder, then imaged by the camera, and finally decoded by an iteration method. The inset upper-left subfigure shows the scanning electron micrograph of the 2D encoder: a YAG:Ce film covered with a 2D
Fig. 4. Radiographs of the resolution chart obtained with a 3 s exposure (the dose is
Fig. 5. Radiographs of the resolution chart obtained with a 0.5 s exposure (the dose is
Fig. 6. Radiographs of the gill of a dehydrated zebrafish following an exposure of 1 s (the dose is
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Huijuan Xia, Yanqing Wu, Lei Zhang, Yuanhe Sun, Zhongyang Wang, Renzhong Tai, "Great enhancement of image details with high fidelity in a scintillator imager using an optical coding method," Photonics Res. 8, 1079 (2020)
Category: Imaging Systems, Microscopy, and Displays
Received: Feb. 27, 2020
Accepted: Apr. 19, 2020
Published Online: Jun. 3, 2020
The Author Email: Yanqing Wu (wuyanqing@zjlab.org.cn), Renzhong Tai (tairenzhong@zjlab.org.cn)