List of top Image Processing and Analysis Questions

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

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)?

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

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

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

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

Choose the CORRECT statement(s).

In surveying, an odometer is used for measuring

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

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

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

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).

Choose the CORRECT statement(s)

Thermal Infrared images are provided by

The relationship between wavelength (\( \lambda \)), frequency (\( \nu \)), and velocity (\( c \)) of electromagnetic wave is

A satellite image with 6-bit radiometric resolution has __________________ gray levels.

Spectral signature of an object in a satellite image does NOT depend on the

Electromagnetic Spectrum can be broadly divided as (in order of increasing wavelength)