Computer Vision 101

Q1 of 4outlined_flag

Which of the following devices makes use of computer vision?

water purifier

solar water heater

biometric device check

television

Option biometric device is correct

Explanation :

needs to read/identify/match the biometric data, and requires vision capabilities

Q2 of 4outlined_flag

Match the use cases with the technologies used in them

Alexa:

speech recognition

Select Answer

Google Lens:

computer vision

Select Answer

Chatbot:

NLP, NLG

Select Answer

Vacuum cleaners:

Robotics

Select Answer

speech recognition matches Alexa

computer vision matches Google Lens

NLP, NLG matches Chatbot

Robotics matches Vacuum cleaners

Explanation

Option

Hint

Alexa

Alexa understands the human commands given to them in speech

Google Lens

Google lens recognizes the objects and provides information about them

Chatbot

Chatbot understands human queries and replies back to them

Vacuum cleaners

Robotic vacuum cleaners assist in house hold chores.

Q3 of 4outlined_flag

Consider the following scenario.

'Explore History' is an educational tour organizer. They take school kids to historical sites. They want every kid in the tour, to have a device, that would describe the kids about the place/object they look at.

What technology should the device be enabled with?

computer vision check

speech recognition

augmented reality

robotics

Option computer vision is correct

Explanation :

the device has to identify the object. Hence, vision is required.

Q4 of 4outlined_flag

Select the scenarios in which computer vision can be applied

Finding the best selling online book

Finding traffic rule violators check

Recognizing monuments in a photograph check

Recognizing network breakdown

Option Finding traffic rule violators is correct

Explanation :

requires vision to observe the traffic signals, and people on road.

Option Recognizing monuments in a photograph is correct

Explanation :

requires vision to look into the photos

Q1 of 3outlined_flag

Which of the following are image pre-processing techniques?

Smoothing check

Change of color spaces check

Scaling check

Image detection

Option Smoothing is correct

Explanation :

smoothing reduces noise from the image and enhances the image quality

Option Change of color spaces is correct

Explanation :

appropriate color spaces has to be chosen to enhance appropriate detection of image segments and features.

Option Scaling is correct

Explanation :

scaling has to be done to reduce the computation power and time required, without loosing the image features. Hence scaling down helps in quick computation

Q2 of 3outlined_flag

Match the techniques with its definition/purpose.

Image processing:

to get enhanced image

Select Answer

Image segmentation:

extracting related pixels in an image

Select Answer

Feature matching:

to identify similarities between images

Select Answer

to get enhanced image matches Image processing

extracting related pixels in an image matches Image segmentation

to identify similarities between images matches Feature matching

Explanation

Option

Hint

Image processing

images are processed to get better features during analysis

Image segmentation

the associated/related pixels are segmented

Feature matching

features are matched to identify objects

Q3 of 3outlined_flag

Arrange the following steps in correct order with respect to feature extraction

i) select features

ii) select key points

iii) find local descriptors

ii, iii and i check

i, iii and ii

iii, i and ii

i, ii and iii

Option ii, iii and i is correct

Explanation :

first the key points are selected, then local descriptors are calculated, and then feature is extracted