Which one of the following image processing methods employs standard deviation?
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- Band ratio
- Parallelepiped classification
- Correction of skew distortion in raw satellite image
- Nearest neighbor classification
The Correct Option is B
Solution and Explanation
Top Questions on Statistics
For the following ten angle observations, the standard error of the mean angle is given as 2cm arcsecond (rounded off to 2 decimal places).
25$^\circ$40'12'' 25$^\circ$40'14'' 25$^\circ$40'16'' 25$^\circ$40'18'' 25$^\circ$40'09'' 25$^\circ$40'15'' 25$^\circ$40'10'' 25$^\circ$40'13'' 25$^\circ$40'15'' 25$^\circ$40'18'' The residual error in a measurement comprises a bias of \( +0.08 \, {m} \) and a random component given by the following density function: \[ f(x) = \frac{1}{0.15 \sqrt{2\pi}} \exp\left( -\frac{x^2}{2 \cdot (0.15)^2} \right) \] For this system, the mean square error (MSE) is __________ m (rounded off to 2 decimal places).
- Two adjacent angles \( A \) and \( B \) have been observed with the following mean values and correlation matrix \( \rho \):
\[ \bar{A} = 10^\circ 20'10'' \pm 10'', \quad \bar{B} = 25^\circ 35'15'' \pm 20'' \]
\[ \rho = \begin{bmatrix} 1.0 & 0.6 \\ 0.6 & 1.0 \end{bmatrix} \]
The standard deviation of the sum of the estimated angles \( A + B \) will be 2cm arcseconds (rounded off to 2 decimal places). The covariance matrix, \( \Sigma \), for the planar coordinates of a surveyed point is given as:
\[ \Sigma = \begin{bmatrix} 25 & 0.500 \\ 0.500 & 100 \end{bmatrix} \quad \text{(in mm}^2\text{)} \] The coefficient of correlation is __________ (rounded off to 2 decimal places).- For a sample drawn from a normally distributed population, the statistic \[ Y = \frac{(n-1)s^2}{\sigma^2} \] where \( n \) = sample size, \( \sigma \) = population standard deviation, and \( s \) = sample standard deviation, has
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The error matrix resulting from randomly selected test pixels for a classified image is given below.
The Producer’s accuracy of class 1 is % (rounded off to 1 decimal place).Reference Data Class 1 Class 2 Class 3 Class 4 Classified Data Class 1 320 8 7 3 Class 2 12 270 6 2 Class 3 9 6 410 5 Class 4 14 2 3 350 - GATE GE - 2025
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The brightness values of four pixels in the input image are shown in the table below. The image is rectified using nearest neighbor intensity interpolation, and the pixel at location (5, 4) in the output image is to be filled with the value from coordinate (5.3, 3.7) in the input image. The brightness value of the pixel at location (5, 4) in the rectified output image is 11. (Answer in integer)
Location of pixels in input image
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