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How to remove motion blur from a given image in frequency domain (deconvolution)? How to Remove Motion Blur from an Image Using Frequency Domain Deconvolution Motion blur is a common issue in photography often resulting from the camera moveme 3 min read 30-09-2024 60
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How to properly calculate PSD plot (Power Spectrum Density Plot) for images in order to remove periodic noise? How to Properly Calculate PSD Plot Power Spectrum Density Plot for Images to Remove Periodic Noise In the realm of image processing particularly in fields like 3 min read 24-09-2024 57
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Inverse Fourier Transform X-Axis Scaling Understanding Inverse Fourier Transform X Axis Scaling The Inverse Fourier Transform is a fundamental mathematical operation that converts frequency domain data 3 min read 21-09-2024 54
Estimating noise (std) of pixel values from NPS? Estimating Noise Standard Deviation of Pixel Values from Noise Power Spectrum NPS Understanding the noise in digital images is crucial for various applications 2 min read 21-09-2024 47
Unexpected horizontal line in discrete inverse Fourier transform of Gaussian function with odd number of samples Understanding the Unexpected Horizontal Line in the Discrete Inverse Fourier Transform of a Gaussian Function with Odd Samples When analyzing the discrete inver 3 min read 21-09-2024 53
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How to use a Fast Fourier Transform to speed up applying a nested loop over dataframes? Speeding Up Nested Loops with Fast Fourier Transform FFT Calculating values based on nested loops over dataframes can be computationally expensive especially wh 2 min read 31-08-2024 59
Perfect interpolation (sinc) of Fourier spectrum equivalent to zero-padding time domain Achieving Perfect Interpolation in the Fourier Domain Sinc and Zero Padding Equivalence This article explores the fascinating relationship between zero padding 2 min read 30-08-2024 48
check if image has "out of focus" blur or "motion blur" problem Detecting Image Blur Motion vs Out of Focus Are you working with a large dataset of images and need to automatically identify which ones have blur issues Distin 3 min read 30-08-2024 68
Hrv frequency parameter fft-method unit question Understanding HRV Frequency Parameters with FFT Method A Deep Dive Analyzing heart rate variability HRV is crucial in understanding cardiovascular health One ef 4 min read 29-08-2024 46
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