Questions tagged [signal-processing]
AKA digital signal processing (DSP). A signal is an information-carrying wave, but in the digital sense, a 'signal' refers to either received or transmitted streams/blocks of data, commonly representing real-world quantities such as audio levels, luminosity, pressure etc over time or distance. 'Processing' is the act of altering, analyzing or characterizing the data to retrieve/modify information inherent in the signal in question.
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Image Stitching using SIFT Keypoint Descriptor in C++
This is a follow-up question for SIFT Keypoint Detection for Image in C++. With the detected SIFT keypoints of images, image stitching is possible to perform. In this post, the first step is to ...
2
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1
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General Two-dimensional Elliptical Gaussian Image Filter in C++
This is a follow-up question for Two dimensional gaussian image generator in C++, Three dimensional gaussian image generator in C++, General Two-dimensional Elliptical Gaussian Image Generator in C++ ...
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I implemented FFT in C
I wrote Cooley-Tukey's FFT algorithm in C. And I want to know how safe is this code? Is it just trash? How can I make it more memory safe?
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N-dimensional bilateral_filter Template Function Implementation for Image in C++
This is a follow-up question for An Updated Multi-dimensional Image Data Structure with Variadic Template Functions in C++ and bilateral_filter Template Function Implementation for Image in C++. The N-...
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Mismatch Between Frequency Response and Eigenvalue-Based Natural Frequency in MATLAB for a 5-DOF System with Frequency-Dependent Stiffness
I am working with a mechanical system that has five degrees of freedom (a composite plate), and I am trying to compute its frequency response, time-domain response, and natural frequencies.
I have ...
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1
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bilateral_filter Template Function Implementation for Image in C++
This is a follow-up question for An Updated Multi-dimensional Image Data Structure with Variadic Template Functions in C++. Bilateral filter is implemented in this post. By Wikipedia, the bilateral ...
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2
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Determining Error Rate of Phase Shift Keying via Monte Carlo Simulation
My program calculates the symbol error rate for various signal-to-noise ratio (SNR) and modulation orders using Monte Carlo simulation on Phase Shift Keying (PSK). How can it be improved?
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difference_of_gaussian Template Function Implementation for Image in C++
This is a follow-up question for conv2 Template Function Implementation for Image in C++ and imgaussfilt Template Function Implementation for Image in C++. I am trying to perform Difference of ...
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convn Template Function Implementation for Image in C++
This is a follow-up question for conv2 Template Function Implementation for Image in C++ and conv3 Template Function Implementation for Image in C++. I am trying to perform n-dimensional convolution <...
2
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1
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conv3 Template Function Implementation for Image in C++
This is a follow-up question for conv2 Template Function Implementation for Image in C++. Besides two-dimensional convolution, I am trying to implement three-dimensional convolution for 3D image in C++...
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0
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Two Dimensional Discrete Fourier Transform Template Function Implementation for Image in C++
This is a follow-up question for An Updated Multi-dimensional Image Data Structure with Variadic Template Functions in C++. For learning purpose, I am trying to implement two dimensional discrete ...
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3
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1D Convolution vector multiplication in ANSI C code
I have a code snippet here about 1D convolution in pure ANSI C code.
Question:
Is this most optimized C code, or can it be done in a more optimized way?
In my ...
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Image Processing Application in C
I'm making a image processing application in c from scratch using P6 ppm images, I want some input on my code before I start adding more features to prevent it from falling apart if it's not well ...
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2
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Fourier Series of a given function
This is a very simple code that expresses a function in terms of Trigonometric Fourier Series and generates a animation based on the harmonics. I would like to know some ways to improve the ...
6
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2
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Drift correction for sensor readings using a high-pass filter
An embedded project my team is working on is having issues with sensor drift over time. To solve this, I thought it might work to use a high-pass filter, since the portion of the signal that we care ...