List of top Geomatics Engineering Questions asked in GATE Civil Engineering

The histogram equalization applied to a digital image generally DOES NOT yield a truly uniform histogram of the transformed image due to
Which type of contrast stretching is represented by the following figure?
Which type of contrast stretching is represented by the following figure?
De-stripping in radiometric correction is used to correct a type of
_______ is a raster image resampling technique that DOES NOT alter any of the output cell values from the input raster dataset.
The figure given below shows the Fourier spectrum obtained by applying filter on a remote sensing image in frequency domain. Zone A represents the location of ________ components.
The figure given below shows the Fourier spectrum obtained by applying filter on a remote sensing image in frequency domain
Contrast enhancement is a type of _______ enhancement.
In tangential method of tacheometry, two vanes in a staff were fixed at a distance of 1.0 m with the bottom vane fixed at 1.0 m. The levelling staff was held vertical at a point P and the vertical angles of the vanes observed were 5°30′ and 3°15', respectively. The vertical distance between the instrument axis and the bottom vane would be _______ m (rounded off to two decimal places).
A one-dimensional normalized kernel $\frac{1}4 [1 \, \,2 \,\,1]$ is convolved with an image to produce an intermediate result. The intermediate image of this operation is again convolved with the same kernel to produce a final result. The equivalent kernel to achieve the same final result in one step from the original image is given as
The Representative Fraction (RF) of the graphical scale given below is 1/X, where X is _______(in integer).
The Representative Fraction (RF) of the graphical scale given below is 1/X, where X is
The combined correction for curvature of Earth and refraction in levelling for a distance of 6 km would be ______ m (rounded off to two decimal places).
Assume the radius of earth is 6370 km.
A four-band multispectral image of size 64 × 64 pixels has 560 header bytes. The per pixel depth of the image is 2 bytes. The total number of bytes required to store this image on the disk in the Band Interleaved by Line (BIL) format will be
A high tower appeared on an aerial photograph taken at 1000 m above mean sea level with a camera lens of 15 cm focal length. The radial distances of the top and bottom images of the tower from principal point of photograph are 92.6 mm and 78.3 mm, respectively. If the average elevation of terrain is 300 m above mean sea level, then the height of the tower above ground is _________ m (rounded off to the nearest integer).
A line measures 15 cm on an aerial photograph, while it measures 5 cm on a map at 1:24000 scale. The photograph was taken using a camera lens of 20 cm focal length. Average elevation of terrain is 240 m above mean sea level. The flying height of the aircraft above mean sea level is___ m (in integer).
If the longitudinal overlap in aerial photographs is kept as 65%, the common overlap (superlap) between three successive photographs is_________ % (in integer).
Which of the following statements is/are CORRECT?
Which of the following statements is/are CORRECT?
Consider a point A on the surface of Earth, its elevation with respect to EGM2008 (geoid) is 95.5 m. The geoidal undulation at point A is 4.5 m. The orthometric height of point A is _______ m (rounded off to one decimal place).
Map (A) represents all the roads, street lights, trees and buildings of a campus of $5 km^2$. Another map (B) represents the forest and agricultural area of a district of 10000 km2. Considering the physical size of both the maps (A) & (B) same, which of the following statements is/are CORRECT?
Change Point (CP) in levelling refers to a location where
"Transit the telescope" of a theodolite involves
Isocentre of a tilted photograph is
At a fixed instrument location in levelling, if the backsight reading at a point P is more than the foresight reading at a point Q, then
The magnetic bearing of a line in the year 1990 was found to be N 40°30' W and magnetic declination was 3°30′ E. If the present magnetic declination is 2°10′ W, the magnetic bearing now (in reduced bearing system) would be
Scale of a vertical aerial photograph of an undulating terrain is
Universal Transverse Mercator (UTM) is a