This set of Digital Image Processing Multiple Choice Questions & Answers (MCQs) focuses on “Components of Image Processing System”.
1. While dealing with millions of images, why is image compression a vital standard to be followed?
a) High quality images are not of any use, so we go for compression
b) The images are compressed to reduce data redundancy
c) Low quality images are preferred for practical use
d) Image compression is used to reduce the storage space
View Answer
Explanation: An image of size 1024*1024 pixels, in which the intensity of each pixel is an 8-bit quantity, requires one megabyte of storage, thus dealing with millions of images would require a large storage space.
2. Which of the following is not required with reference to the light source of a lighting system?
a) Sufficient light to provide a quality image
b) Available at low cost
c) The color of light should be pleasing to the eye
d) Provide spatial and temporal intensity to the to the sample
View Answer
Explanation: The light source employed in a lighting system in an image processing system requires a cheap light source in terms of cost, a source providing spatial and temporal intensity to the to the sample and providing sufficient light for a quality image, but the color of light immaterial in this context.
3. Why is incident light illumination used in a lighting system?
a) Other sources of illumination cause introduction of noise
b) Incident light illumination causes light reflection on the lenses
c) Cane and Bagasse fiber is suitable light in color for scattered light illumination and simple to implement in environmental conditions
d) The setup of incident light illumination is cheap
View Answer
Explanation: Incident light illumination gives the best response in an image processing system, Cane and Bagasse fiber is mostly used and is simple to implement.
4. With respect to Digital Processing System which 2 elements are required to acquire digital Images?
a) Physical device and digitizer
b) Digital device and digital camera
c) Digital camera and computer system
d) Transmitter and receiver
View Answer
Explanation: A digital processing system requires a physical device, which should be sensitive to the energy radiated by the object we wish to image and a digitizer which would convert the output of the physical sensing device into a digital form.
5. What kind of physical device is required by a digital image processing system:
a) Sensitive to the noise in the external environment of the object we wish to image
b) Sensitive to the energy radiated by the object we wish to image
c) Sensitive to the pixel information of the object we wish to image
d) Sensitive to the light incident on the object we wish to image
View Answer
Explanation: The physical device used in an image processing system should be sensitive to the energy radiated by the object we wish to image, as greater the sensitivity, greater will be the quality of the image.
6. What is a digitizer in an image processing system?
a) A device which can convert an electric signal from the physical device into a digital form
b) A device which can convert the incident light on it device into a digital form
c) A device which can convert the output of a physical sensing device into a digital form
d) A device which can convert a digital signal to a continuous signal
View Answer
Explanation: Digitizer is a device which can convert the output of a physical sensing device into a digital form. Ex: In a digital video camera, the electrical output from the sensors are proportional to light intensity.
7. What is the function of ALU in a digital image processing system?
a) ALU is used in averaging images
b) ALU is used to calculate correlation between adjacent pixels
c) ALU is used add 2 images or more
d) ALU is used for image correlation
View Answer
Explanation: ALU is used in averaging images, as the digitizer gives the output, i.e. gets digitized. This is done to reduce the noise from the images at the very first step.
8. Which of the following provide the most efficient short-term storage in an image processing system?
a) Cloud
b) Hard-disk
c) CD
d) Frame buffer
View Answer
Explanation: Frame buffers can store images and those can be accessed at a faster rate, usually at video rates (30 complete images per second).
9. Transmission bandwidth plays a key role in image transmission via the internet to remote sites, which of the following is improving this situation to a large extent?
a) Wi-Fi
b) Li-Fi
c) Optical Fibers
d) Satellite Communication
View Answer
Explanation: Communication to remote sites via the Internet is not efficient always. This
situation is improving quickly with the use of optical fiber and other broadband technologies.
10. Which of the following is front-end-subsystem in an image processing system?
a) Physical device
b) Digitizer
c) ALU
d) Digitizer and the ALU
View Answer
Explanation: Image processing system consists of a digitizer and the hardware that performs other primitive operations such as arithmetic and logical operations (ALU). This is called a front-end-subsystem.
11. Which of the following storage is used for frequent access in an image processing system?
a) Archival storage
b) on-line storage
c) short-term storage
d) long-term storage
View Answer
Explanation: On-line storage usually takes the form of magnetic disks and optical media storage. The key factor in on-line storage is the frequent access to the stored data.
Sanfoundry Global Education & Learning Series – Digital Image Processing.
To practice all areas of Digital Image Processing, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
- Apply for Electronics Engineering Internship
- Check Digital Image Processing Books
- Check Electrical Engineering Books
- Practice Electronics Engineering MCQs
- Apply for Electrical Engineering Internship
