>Image Processing and Analysis

Found 30 QuestionsSET DEFAULT

Selected Filters

Image Processing and Analysis

Exams

GATE Geomatics Engineering

Subjects

Topics

Color Models
Data Quantization and Processing
Digital Image Processing
Image Enhancement
Image Segmentation and Classification
Image Transformation
Radiometric and Geometric Corrections

List of top Image Processing and Analysis Questions

The hue, intensity and saturation values for a pixel are \( H = 0.5 \, {rad} \), \( S = 0.5 \), and \( I = 0.3 \), respectively. If the pixel is converted to RGB color model, then the value of the green pixel would be __________ (rounded off to 2 decimal places).

GATE GE - 2025
GATE GE
Image Processing and Analysis
Color Models

The minimum and maximum Digital Number (DN) values of an image are 30 and 55, respectively. If the input DN value of a pixel is 35, the output DN value after linear contrast stretch of an 8-bit data is __________________ (in integer).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Enhancement

The overall image classification accuracy (in percentage) calculated from the following error matrix is __________________ (in integer).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Segmentation and Classification

Number of bytes required to store an 8-bit uncompressed image of size 512 × 512 pixels is __________________ (in integer).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Data Quantization and Processing

For a given set of radiance values, which amongst the following is/are unitless?

GATE GE - 2022
GATE GE
Image Processing and Analysis
Radiometric and Geometric Corrections

Match the CORRECT option(s) for the types of filters given in (I), (II), (III), and (IV) with their kernels given in (P), (Q), (R), and (S).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Enhancement

The decorrelation stretch enhances colour differences and removes inter-band __________________.

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Transformation

Identify the CORRECT statement(s).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

Choose the CORRECT statement(s).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

Band ratio in satellite images interpretation is applied to

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Transformation

In case of Principal Component Analysis (PCA), the variance of a single variable expresses the spread of its values about the

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Transformation

In a Landsat-8 scene, digital number (DN) values of a pixel in band-4, band-5 and band-10 are 80, 100 and 30, respectively. What would be the NDVI value for the same pixel (round off to 3 decimal places)?

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Transformation

The sum of all the values of a normalized histogram is equal to __________________ (in integer).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Data Quantization and Processing

Choose the INCORRECT statement about image segmentation in digital image processing.

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Segmentation and Classification

Select the CORRECT sequence for supervised classification of satellite image.
(i) Classification
(ii) Training
(iii) Accuracy assessment
(iv) Radiometric/geometric correction

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Segmentation and Classification

When the histogram of an image is non-Gaussian in nature, the type of linear contrast enhancement preferred to be used is

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Enhancement

In a covariance matrix, the main diagonal shows the __________________ of each band.

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Transformation

The correlation coefficient between two bands of remote sensing data that would yield good classification is

GATE GE - 2022
GATE GE
Image Processing and Analysis
Image Segmentation and Classification

Choose the CORRECT statement(s).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

In surveying, an odometer is used for measuring

GATE GE - 2022
GATE GE
Image Processing and Analysis
Data Quantization and Processing

Number of cells required to cover an area of 9 sq. km of ASTER-GDEM are __________________ (in integer).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Data Quantization and Processing

Choose the CORRECT statement(s) in case of visual image interpretation.

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

The spatial resolution of a satellite image \( P \) is 80 m and another satellite image \( Q \) is 20 m; each of 512 \(\times\) 512 pixel size. Choose the CORRECT option(s).

GATE GE - 2022
GATE GE
Image Processing and Analysis
Radiometric and Geometric Corrections

Which statement(s) is/are CORRECT for Hyperspectral images?

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

Choose the CORRECT statement(s)

GATE GE - 2022
GATE GE
Image Processing and Analysis
Digital Image Processing

Prev
1
2
Next