WorksheetsDigital Image Processing - 1
Total questions: 25
Worksheet time: 13mins
What is the third step in digital image processing?
(A) Image Restoration
(B) Segmentation
(C) Image Enhancement
(D) Colour Image Processing
Digitizing the coordinate values of a continuous image is called
(A) Compression
(B) Quantization
(C) Sampling
(D) Segmentation
_____ is the total amount of energy that flows from light source.
(A) Radiance
(B) Darkness
(C) Brightness
(D) Luminance
Lossy compression is useful in
(A) Military imaging
(B) Space imaging
(C) Medical imaging
(D) Television broad casting
Decision tree and support vector machine is an example of
(A) neural network
(B) structural matching
(C) statistical classification
(D) template matching
Bandwidth compression means
(A) Analog compression
(B) Digital compression
(C) Relative compression
(D) None of these
Which characteristics are taken together in chromaticity?
a) Hue and Saturation
b) Hue and Brightness
c) Saturation, Hue, and Brightness
d) Saturation and Brightness
The digitization process, in which the digital image comprises M rows and N columns, necessitates choices for M, N, and the number of grey levels per pixel, L. M and N must have which of the following values?
a) M have to be positive and N have to be negative integerr
b) M have to be negative and N have to be positive integer
c) M and N have to be negative integer
d) M and N have to be positive integer
Points whose locations are known exactly in the input and reference images are used in Geometric Spacial Transformation.
a) Known points
b) Key-points
c) Réseau points
d) Tie points
Which of the following filter’s responses is based on the pixels ranking
a) Sharpening filters
b) Nonlinear smoothing filters
c) Geometric mean filter
d) Linear smoothing filters
Which of the following statement describe the term pixel depth?
It is the number of units used to represent each pixel in RGB space
It is the number of mm used to represent each pixel in RGB space
It is the number of bytes used to represent each pixel in RGB space
It is the number of bits used to represent each pixel in RGB space
Which of the following is the next step in image processing after compression?
Representation and description
Morphological processing
Segmentation
Wavelets
___________ determines the quality of a digital image.
The discrete gray levels
The number of samples
discrete gray levels & number of samples
None of the mentioned
The effect caused by the use of an insufficient number of intensity levels in smooth areas of a digital image _____________
False Contouring
Interpolation
Gaussian smooth
Contouring
•Histogram Equalization is a process in which
a) a histogram is created
b) the contrast of an image is adjusted by using its histogram.
c) An equal size histogram for an image is created.
d) the pixel values are increased.
•Correlation is the process of
a. Summing up the neighborhood pixel values
b. Increasing the intensity value
c. Calculating the average of the pixel values.
d. moving a filter mask over the image and computing the sum of products at each location
•The process of changing not only the intensity values , but the ratio of red to blue to green is
•A. Ratio sharing
•B. Alpha tuning
•C. Gamma correction
•D. transformation
•In _____ filters the low frequencies are preserved.
a)High-pass
b)Low-pass
c)High –reject
d)Low-reject
•In noise reduction ________ filters are used.
A) Sharpening filters
B) Smoothing filters
C) Both a & b
D) None of the above
Which image file format will NOT let you have a transparent background?
GIF
BMP
JPG
Which file format has the lowest quality?
BMP
JPG
GIF
Which file is the best option to use?
Which of the following describes a low resolution graphic?
Low number of pixels, low quality image, low file size
Low number of pixels, high quality image, high file size
High number of pixels, high quality image, low file size
High number of pixels, high quality image, high file size
