Different results applying DFT (formula only) and FFT on Matlab?

8yr ⋅

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Efficient Marker Detection for Images

10yr ⋅

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Spectral images - How do they appear during ADC?

11yr ⋅

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Implementing Wavelet Transform using Equations

11yr ⋅

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How to calcuate the beta metrics?

11yr ⋅

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Minimization of Essential matrix

13yr ⋅

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Amplitude of the Signal in Frequency Domain different from Time Domain

12yr ⋅

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How can we calculate the frequency response of each filter of a Discrete Wavelet Decomposition filter bank?

10yr ⋅

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How to calibrate three orthogonal cameras?

10yr ⋅

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Sampling low pass filtered white noise

11yr ⋅

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Why can the FFT always be mirrored in the middle of the x axis?

11yr ⋅

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Scatter plot: calculate box where 80 % of the points are

11yr ⋅

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How does filter bank work in image processing?

11yr ⋅

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How to filter data to remove noise in MATLAB?

11yr ⋅

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Why does an 8 point DFT behave differently from a 16 point?

10yr ⋅

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How do I reconstruct a covered-over part of a regular pattern

13yr ⋅

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Detect lanes from a filtered image

11yr ⋅

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Convolution for non-signal-processing background

11yr ⋅

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Detecting & Removing steps in signal

11yr ⋅

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Why do we read that Hilbert transform can be used for envelope detection?

11yr ⋅

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Why complex numbers are represents as a+ib and can't be as (a,b)?

12yr ⋅

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Pyramid Match Kernel: How to fit grid around data points?

10yr ⋅

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Why sinc function defined on minus side?

11yr ⋅

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Ignoring Nyquist

11yr ⋅

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strange phenomenon in spectrogram of Windowed Fourier Transform [edited]

11yr ⋅

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OFDM violates sampling theorem

10yr ⋅

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How to filter a regular ticking out of a digital (on/off) signal?

11yr ⋅

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2D deconvolution of recorded electron beam data

10yr ⋅

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Confusion about adjoint of convolution

8yr ⋅

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Avoiding edge repeats in a FFT convolution

10yr ⋅

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Feature matching of images without corners

8yr ⋅

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Discrete approximation to Gaussian filter

10yr ⋅

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Detect and isolate veins in the palm?

13yr ⋅

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O(1) peak segmentation algorithm in matlab?

10yr ⋅

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Digital implementation of type I compensation network

11yr ⋅

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Reconstruct FIR frequency response from the coefficients

10yr ⋅

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Mutual Information, is this calculation correct or should I contact the author about fixing it?

12yr ⋅

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Least-squares digital IIR filter design (with arbitrary responses)

11yr ⋅

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Quantizing a filtered signal

10yr ⋅

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Demonstrating the effect of aliasing

12yr ⋅

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Recover myself from Dilate and Erode for noise reduction

12yr ⋅

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Spectral Leakage, Phase and other questions about FFT

11yr ⋅

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Strange step response

8yr ⋅

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How do I compare two resultant images from different binarization algorithms?

13yr ⋅

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Removing parallel edges from binary image

12yr ⋅

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Ideal geometric arrangement of microphone array

11yr ⋅

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Understanding the attenuation of a signal

12yr ⋅

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What are the characteristics of a good smoothing convolution kernel?

13yr ⋅

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An alternative algorithm for blob detection

10yr ⋅

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Longest line inside of 3D object

10yr ⋅

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All-pass filters to remedy group delay

12yr ⋅

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Fitting fixed number of complex exponentials to complex signal

11yr ⋅

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How to find poles of transfer function by looking at the step response?

12yr ⋅

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Spectrum analyser and resolution bandwidth

11yr ⋅

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Trying to understand WAVELET TRANSFORM Frequncy-Time diagram

11yr ⋅

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Determining power of white noise component of an incomplete time signal

10yr ⋅

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How can I smoothly interpolate between 2 position?

12yr ⋅

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breaking the input signal into segments while calculating DFT

12yr ⋅

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Block diagram reduction

10yr ⋅

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Forecasting noisy data with polynomials

10yr ⋅

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Conversion between DCT to DFT frequency domains

11yr ⋅

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Polyphase filter notation

13yr ⋅

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How to approximate these fuzzy rectangle shapes in binary maps?

11yr ⋅

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What are the options for turning a bit stream into a byte stream?

11yr ⋅

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Relation between sawtooth Fourier coefficients and its DFT

8yr ⋅

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Which method to remove small unwanted region and fill holes

10yr ⋅

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How to quantify asymmetry of a signal?

10yr ⋅

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Segmentation of microscopic images

11yr ⋅

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Measure of intermittency/continuousness of a signal

10yr ⋅

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Measuring the frequency stability of a signal

12yr ⋅

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Fixed point channel model for OFDM system

11yr ⋅

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Power spectral density and SNR for AWGN

11yr ⋅

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Frequency resolution and timestep in DFT

11yr ⋅

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Time-frequency representation of sound signal using Matlab

10yr ⋅

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Shortest geometric distance from surface in 3d dataset?

12yr ⋅

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how to smooth estimated velocity

9yr ⋅

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How would I generate these figures?

9yr ⋅

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Detecting a curve with certain characteristics in a spectrogram

10yr ⋅

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Amplitude and phase spectrum in MATLAB

11yr ⋅

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Extracting phase using Goertzel filter in Python

10yr ⋅

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How do I implement the delay of the Q-Phase Input in GMSK?

10yr ⋅

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Find the area of all triangles from an output of Delaunay Triangulation

10yr ⋅

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Metrics for Noisy Images

10yr ⋅

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Understanding this Haar Wavelet Example

12yr ⋅

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Standard representation of FFT of an Image?

10yr ⋅

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Converting from stereo to mono by averaging

12yr ⋅

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How to trace the edges on matlab

11yr ⋅

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Estimating a low frequency signal corrupted by high frequency noise

9yr ⋅

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Finding out modulation index and dc offset

12yr ⋅

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Working backwards from PSD to possible signal

12yr ⋅

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Gesture recognition from analog sensor value

11yr ⋅

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How to recognize patterns in a noisy audio frequency spectrum?

13yr ⋅

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find the gradient direction at a point in a shape

12yr ⋅

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Generating a sound where end frequency is 1/2 of the start frequency

11yr ⋅

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Signature of a Signal for anomaly detection in Power Systems

12yr ⋅

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Image comparison using MATLAB

12yr ⋅

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Fourier Transform of infinite sum

11yr ⋅

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How to detect quadrilaterals in a point cloud?

11yr ⋅

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FIR filter design by the Fourier transform method

11yr ⋅

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How to reconstruct the signal if there were some temporary offsets

9yr ⋅

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What tools do you use to create signal processing plots?

9yr ⋅

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Determining the period of a discontinuous function

12yr ⋅

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Wavelet signal analysis for ultrasound echo

11yr ⋅

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Segmenting wood chips in an image

11yr ⋅

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Improving the performance of the Hough transform

12yr ⋅

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How to detect the edges of periodic signal?

12yr ⋅

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Visualize visual words in bag of words model

11yr ⋅

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Find beginning of signal for BPSK Demodulation

11yr ⋅

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Reconstruct DWT for each cD1,cD2,cD3 and cA3 signals

11yr ⋅

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FFT spectre graph measurements y-axis

12yr ⋅

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How to determine range of HSV values of the image?

12yr ⋅

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Digital implementation of first order analog filter using bilinear transformation

11yr ⋅

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What is the meaning of the delay in a FIR filter

11yr ⋅

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Sampling theorem and Dirac comb

13yr ⋅

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Polyphase Decomposition in Matlab

13yr ⋅

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General question about DFT

11yr ⋅

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MACE correlation filter - any suggested values of of u?

11yr ⋅

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Comparing Image FFT with Sine wave FFT

12yr ⋅

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Stereo sound separation into three sources

12yr ⋅

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Applying Photoshop's Shadow/Highlight correction using standard image-processing algorithms

12yr ⋅

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Is it feasible to try and classify an enclosed space as being a. Very crowded b. Less crowded & c. Sparsely crowded using image processing?

11yr ⋅

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Choosing inverse Z-transform equation, given that $|a|<1$

11yr ⋅

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Estimate phase using STFT in Matlab?

11yr ⋅

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Berchin's FDLS arbitrary filter design algorithm

11yr ⋅

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why fourier series gives lower amplitude for max value of signal

9yr ⋅

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Estimating noise level without 'quiet' segment

11yr ⋅

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Estimation of Glottal Closure Instant

11yr ⋅

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Bitmap border/stroke alogirthm?

13yr ⋅

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Frequency detection

11yr ⋅

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Remove minor cycle from time series

11yr ⋅

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Detecting a single frequency in noisy data

11yr ⋅

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what is the starting point of a contour as given by cvConvexityDefect() function in OpenCV

12yr ⋅

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Smoothing font characters outlines in bitmap image

11yr ⋅

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Even after applying a low pass filter, why is there a DC offset?

11yr ⋅

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False SURF output in video

11yr ⋅

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Housekeeping operations in filters

11yr ⋅

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Integrator and the multiplier in the Optimal Binary Detector

11yr ⋅

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MR Segmentation to draw marker over the MR Dicom Images

11yr ⋅

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How to find the group delay of IIR filters in Python/SciPy

11yr ⋅

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Is Entropy Coding in Wavelet equivalent to Huffman Coding in DCT

11yr ⋅

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Problem reading and rendering Spectrum

13yr ⋅

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Matlab stores all level of Wavelet's Approximation & Details in a single Row

12yr ⋅

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How can I detect clicks/ticks in a wav file?

12yr ⋅

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How to find quantization noise in my simulation?

13yr ⋅

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Is there any way to get intensity value of a certain wavelength for given pixel of a normal image?

13yr ⋅

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Iris recognition using filters?

13yr ⋅

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