Alexander Ratke, articles - page 13

Running the BM3D Denoising Algorithm in Python
What is BM3D denoising? What is BM3D denoising?Block-matching and 3D filtering (BM3D) is a 3-D block-matching algorithm used primarily for noise red...
How exactly is analog Signal to Noise Ration (SNR) defined?
SNR is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates mor...
What Does the Total Variation Norm Mean in the Context of Image Processing
The Total Variation is a measure of how close the image is to a Piece Wise Constant function. What is total variation in image processing?How do you f...
Reduce noise of sensor by combining two
How do you remove noise from sensor data?How can I reduce my IMU noise?What causes sensor noise? How do you remove noise from sensor data?A moving a...
Audio Activity Detection and Classification
How do you detect voice activity?What is VAD in networking?What is voice activity factor? How do you detect voice activity?Voice activity detection ...
My X ray images have black background, which turn gray after low-pass filter. How to recover blackness?
What happens when an image is passed through low pass filter?Will digital signal filtering causes blurring of images?What is the effect on the image ...
Learning PSK Modulation and Demodulation - Good Text to Read?
Why do we need to study modulation and demodulation in communication system?What is PSK modulation and demodulation?What is modulation and demodulati...
Kalman Filter EM Estimation of Covariances
What is covariance in Kalman filter?Why covariance matrix is used in Kalman filter?What is state estimation Kalman filter?What is covariance EKF? Wh...
Is $y(t) = \cos(t) + x(t)$ a time-invariant system?
How do you check system is time invariant or not?Is COSX time invariant?What is the example of time-invariant system?Is sin t time invariant? How do...