List of top Image Processing and Analysis Questions asked in GATE GE

A geometrically distorted image is corrected and the pixel values are assigned using resampling techniques as shown in the figure. In this context, which of the following options is/are CORRECT?

While implementing the digital Laplacian filter mask, which of the following is/are the possible value(s) of the center pixel?

Which of the following options is/are INCORRECT?

An 8-bit remote sensing image has brightness values ranging from 24 to 120. While applying the minimum-maximum contrast stretch, which of the following statements is/are CORRECT?

Which one of the following is the CORRECT outcome of convolution with zero padding of the two images given below?
\[ \begin{bmatrix} 1 & 1 \\ 1 & 1 \end{bmatrix} * \begin{bmatrix} 1 & 1 \\ 1 & 1 \end{bmatrix} \]

Which of the following is/are CORRECT when using the Discrete Fourier Transform to compute convolution without zero padding?

Let \(f(x,y)\) be an image with the histogram as shown in the figure. X-axis denotes grey levels (r) and Y-axis denotes the probability (p) of occurrence of the grey levels.

What is the variance of the equalized image?

Convolution of two digital images in the spatial domain corresponds to __________ in the frequency domain.

A square digital image of size 128 × 128 pixels requires 65536 bits of storage. What is the number of grey levels?

Applying a 3 × 3 mean filter centered on the grey shaded pixel in the input image, shown below, will result in an output value of __________ (Answer in integer).

Consider the following arrangement of pixels P, P₁, P₂, P₃ and P₄ as shown in the figure. Assume that P, P₂ and P₄ have a value of 1, and P₁ and P₃ have a value of 0. If we consider adjacency of pixels as \(V=\{1\}\), what is the length of the shortest m-path between P and P₄?

Which one of the following is NOT a linear raster operation?