For the 2D discrete Gabor transform, why is it that we cannot use a set of orthonormal basis for its representation, instead we have to use frames for representing it?
2026-03-27 12:01:09.1774612869
understanding bases and frames for Gabor transform
93 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail At
1
There are 1 best solutions below
Related Questions in SIGNAL-PROCESSING
- What is the result of $x(at) * δ(t-k)$
- How is $\int_{-T_0/2}^{+T_0/2} \delta(t) \cos(n\omega_0 t)dt=1$ and $\int_{-T_0/2}^{+T_0/2} \delta(t) \sin(n\omega_0 t)=0$?
- Show that a periodic function $f(t)$ with period $T$ can be written as $ f(t) = f_T (t) \star \frac{1}{T} \text{comb}\bigg(\frac{t}{T}\bigg) $
- Taking the Discrete Inverse Fourier Transform of a Continuous Forward Transform
- Is $x(t) = \sin(3t) + \cos\left({2\over3}t\right) + \cos(\pi t)$ periodic?
- Fast moving object, how to remove noise from observations?
- Computing convolution using the Fourier transform
- Find Fourier Transform of $\cos^2(ωt)x(t)$
- Finding closed expression for the output of an LTI system
- Is there an intuitive way to see that $\mathbb{E}[X|Y]$ is the least squares estimator of $X$ given $Y$?
Related Questions in IMAGE-PROCESSING
- Defintion Ideally sampled image
- Show that a periodic function $f(t)$ with period $T$ can be written as $ f(t) = f_T (t) \star \frac{1}{T} \text{comb}\bigg(\frac{t}{T}\bigg) $
- Apply affine heat equation on images
- Are there analogues to orthogonal transformations in non-orientable surfaces?
- How does Fourier transform convert from time domain to frequency domain
- Increasing the accuracy with techniques of interpolation
- How to interpret probability density function of transformed variable?
- Why are median filters non-separable?
- Solving Deconvolution using Conjugate Gradient
- How to deblur a image matrix blured by two circulant matrix?
Related Questions in ORTHONORMAL
- Orthonormal basis for $L^2(\mathbb{R}^n,\mathbb{F})$
- What is $\| f \|$ where $f(x)=\sum\limits_{n=1}^\infty \frac{1}{3^n} \langle x,e_n\rangle$
- Forming an orthonormal basis with these independent vectors
- Orthogonal Function Dirac Delta Series
- Sum of two rank $1$ matrices with some property gives rank $2$ matrix
- Zero element in an Hilbert space is orthogonal?
- Prove that $\lVert X\rVert^2 =\sum_{i,j=1}^\infty\lvert\langle u_i,Xu_j\rangle\rvert^2$.
- Is there any connection between the fact that a set of vectors are mutually orthogonal and the same set of vectors are linearly independent
- Compute the norm of a linear operator using a normal basis in an infinite Hilbert space
- If $M$ is the span of a finite orthonormal set in a Hilbert space then $M$ is closed
Trending Questions
- Induction on the number of equations
- How to convince a math teacher of this simple and obvious fact?
- Find $E[XY|Y+Z=1 ]$
- Refuting the Anti-Cantor Cranks
- What are imaginary numbers?
- Determine the adjoint of $\tilde Q(x)$ for $\tilde Q(x)u:=(Qu)(x)$ where $Q:U→L^2(Ω,ℝ^d$ is a Hilbert-Schmidt operator and $U$ is a Hilbert space
- Why does this innovative method of subtraction from a third grader always work?
- How do we know that the number $1$ is not equal to the number $-1$?
- What are the Implications of having VΩ as a model for a theory?
- Defining a Galois Field based on primitive element versus polynomial?
- Can't find the relationship between two columns of numbers. Please Help
- Is computer science a branch of mathematics?
- Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
- Identification of a quadrilateral as a trapezoid, rectangle, or square
- Generator of inertia group in function field extension
Popular # Hahtags
second-order-logic
numerical-methods
puzzle
logic
probability
number-theory
winding-number
real-analysis
integration
calculus
complex-analysis
sequences-and-series
proof-writing
set-theory
functions
homotopy-theory
elementary-number-theory
ordinary-differential-equations
circles
derivatives
game-theory
definite-integrals
elementary-set-theory
limits
multivariable-calculus
geometry
algebraic-number-theory
proof-verification
partial-derivative
algebra-precalculus
Popular Questions
- What is the integral of 1/x?
- How many squares actually ARE in this picture? Is this a trick question with no right answer?
- Is a matrix multiplied with its transpose something special?
- What is the difference between independent and mutually exclusive events?
- Visually stunning math concepts which are easy to explain
- taylor series of $\ln(1+x)$?
- How to tell if a set of vectors spans a space?
- Calculus question taking derivative to find horizontal tangent line
- How to determine if a function is one-to-one?
- Determine if vectors are linearly independent
- What does it mean to have a determinant equal to zero?
- Is this Batman equation for real?
- How to find perpendicular vector to another vector?
- How to find mean and median from histogram
- How many sides does a circle have?
I think this is effectively because of the Balian-Low theorem. If we were to force the basis to be orthonormal, we would end up with variances that diverge which is not so desirable (because it means our functions are decaying rather slowly).