Matching adaptive filtering method capable of being used for multiplexing off-axis digital holography
The invention discloses a matching adaptive filtering method capable of being used for multiplexing off-axis digital holography. The method comprises the following steps: firstly, performing Fourier transform on a multiplexing hologram to obtain a multiplexing holographic spectrum, and setting an in...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
03.10.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a matching adaptive filtering method capable of being used for multiplexing off-axis digital holography. The method comprises the following steps: firstly, performing Fourier transform on a multiplexing hologram to obtain a multiplexing holographic spectrum, and setting an initial value of a filtering algorithm according to the number of spectrum items in the multiplexing holographic spectrum; normalizing the multiplexing holographic spectrum and carrying out K-means threshold clustering to obtain a clustering center set; carrying out standardization and phase taking on the multiplexing holographic spectrum to obtain a standardized phase spectrum, and carrying out regional lightening on the standardized phase spectrum; matching and positioning the standardized phase spectrum and the clustering center set to obtain a plurality of filtering centers, and generating a Butterworth filtering window by taking one third of the distance from each filtering center to the zero point of the freque |
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Bibliography: | Application Number: CN202310674176 |