Image Processing Exam Questions And Solutions — Fast

A 1D signal is [1, 3, 5, 7, 9, 11, 13, 15]. Apply a one-level Haar wavelet transform (low-pass and high-pass). Show the approximation and detail coefficients.

Compute the gradient magnitude using the Sobel operator. The Sobel kernels are: [ G_x = \beginbmatrix -1 & 0 & +1 \ -2 & 0 & +2 \ -1 & 0 & +1 \endbmatrix, \quad G_y = \beginbmatrix -1 & -2 & -1 \ 0 & 0 & 0 \ +1 & +2 & +1 \endbmatrix ] Image Processing Exam Questions And Solutions

Reducing spatial resolution (dimensions) and color depth (grey levels) drastically decreases storage requirements but introduces aliasing and contouring artifacts. A 1D signal is [1, 3, 5, 7, 9, 11, 13, 15]