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- W2040453802 abstract "In this paper a novel method of realizing digital filters in an incoherent correlator is proposed in a shortly way. A novel gray-scale complementary encoding method is used to express the positive and negative numbers simultaneously. Digital filtering will be simplified into a convolution of the encoding images and filters followed by a subtraction operation. Based on the new method an Incoherent Optical Digital Filtering Unit (IODFU) is constituted. In the IODFU a liquid crystal spatial light modulator is used for displaying the gray-scale images to analyzed and the digital filters at the same time. All the images and filters can be changed by computer-controlling for different destinations. The IODFU is very compact and the processing speed can get to 12 frames per second. At the end of this paper the optical experiments are given." @default.
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- W2040453802 date "1998-04-01" @default.
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- W2040453802 title "<title>Using liquid crystal spatial light modulators for realizing digital filters in an incoherent correlator</title>" @default.
- W2040453802 doi "https://doi.org/10.1117/12.304539" @default.
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