Chapter 5: Computer Vision

Important questions — the ones the board asked most (4)

1. Q1Very short answer2 marksAsked: 2026

   How do computers store RGB images ?

   

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   Model answer · Storage of RGB images

   1. 1.All the coloured images that we see around us are made up of three primary colours Red, Green, and Blue. All the colours that are present can be made by combining different intensities of red, green, and blue.0.5 marks
   2. 2.A computer stores every RGB image in the form of three different channels called the R channel, G channel, and the B channel.0.5 marks
   3. 3.Each plane separately has many pixels, with each pixel value varying from 0 to 255. Here 0 means black or no presence of colour and 255 means white or full presence of colour.0.5 marks
   4. 4.All the three planes when combined form a colour image. This means that in an RGB image, each pixel has a set of three different values which together give colour to that particular pixel.0.5 marks

   • Name all three channels: "the R channel, G channel, and the B channel".
   • Write the range of each pixel value as "0 to 255".
   • End by saying each pixel has "a set of three different values which together give colour to that particular pixel".

   Marks split as in the board’s published marking scheme

2. Q2Short answer2 marksAsked: 2025

   Give any two key impacts of Computer Vision on medical imaging.

   

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   Model answer · applications of Computer Vision, medical imaging

   1. 1.Computer supported medical imaging application has been a trustworthy help for physicians for the last decades. It doesn't only create and analyse images like X-rays, MRIs, and CT scans, but also becomes an assistant and helps doctors with their interpretation, which increases the accuracy and speed in the analysis of these medical images.1 mark
   2. 2.The application is used to read and convert scan images into interactive 3D models that enable medical professionals to gain a detailed understanding of a patient's health condition. This assists doctors in the early detection of tumors or abnormalities, enabling faster and more effective diagnosis of diseases.1 mark

   • Mention that medical imaging helps analyse images like X-rays, MRIs, and CT scans to earn the first point.
   • Write that it enables early detection of tumors or abnormalities for the second point.
   • Use the exact phrase 'interactive 3D models' to show the detailed understanding given to medical professionals.

   Marks split from a structure derived from past papers (checked twice); not CBSE’s official scheme

3. Q3Short answer2 marksAsked: 2024

   16. Differentiate between grayscale and RGB images.

   

   Medha Ma’am

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   Model answer · grayscale vs RGB images

   1. 1.Grayscale images are images that have a range of shades of gray without apparent colour, with the darkest possible shade being black and the lightest possible shade being white. A grayscale image has each pixel of size 1 byte having a single plane of 2d array of pixels, so it uses a single channel.1 mark
   2. 2.RGB images are coloured images made up of three primary colours Red, Green, and Blue. An RGB image is stored in the form of three different channels called the R channel, G channel, and the B channel, where each pixel has a set of three different values that together give colour to that pixel.1 mark

   • Write that grayscale images have a single plane/single channel with shades of gray from black to white.
   • Write that RGB images use three channels - R channel, G channel, and B channel - combining Red, Green and Blue.

   Marks split from a structure derived from past papers (checked twice); not CBSE’s official scheme

4. Q4Short answer2 marksAsked: 2023

   Face lock feature of a smartphone is an example of computer vision. Briefly discuss this feature.

   How the model answer begins

   1. The face lock feature uses computer vision to identify and analyze the facial features of the user. Through the camera, the machine or the algorithm is able to identify the facial dynamics of the person by scanning the…

   The full answer from Medha Ma’am →

Objective questions with the board’s key (10)

1. 1. CBSE 2026

   In the context of Computer Vision vs Image Processing, which statement correctly differentiates them ?

   • (A) Computer Vision and Image Processing are exactly the same.
   • (B) Computer Vision enhances the image while Image Processing does not.
   • (C) Computer Vision is a superset of Image Processing. ✓
   • (D) Image Processing is a superset of Computer Vision.

   Answer: (C)

2. 2. CBSE 2025

   What does the term “image processing” refer to in Computer Vision ?

   • (A) Editing videos
   • (B) Extracting meaningful information from images ✓
   • (C) Playing audio files
   • (D) Compiling codes

   Answer: (B)

3. 3. CBSE 2025

   In Computer Vision, which of the following tasks is used for single object ?

   • (A) Object Detection
   • (B) Classification + Localization ✓
   • (C) Instance Segmentation
   • (D) Non-Localization

   Answer: (B)

4. 4. CBSE 2025

   Statement 1 : Various search engines and e-commerce portals now have a new feature called image-based search using computer vision. Statement 2 : Image-based search helps in finding items, people and places by giving their sounds to the system.

   • (A) Both Statement 1 and Statement 2 are correct.
   • (B) Both Statement 1 and Statement 2 are incorrect.
   • (C) Statement 1 is correct but Statement 2 is incorrect. ✓
   • (D) Statement 2 is correct but Statement 1 is incorrect.

   Answer: (C)

5. 5. CBSE 2024

   Assertion (A) : The term used to refer to the number of pixels in an image is resolution. Reason (R) : Resolution in an image denotes the total number of pixels it contains, usually represented as height × width.

   • (A) Both (A) and (R) are true and (R) is the correct explanation for (A). ✓
   • (B) Both (A) and (R) are true and (R) is not the correct explanation for (A).
   • (C) (A) is true, but (R) is false.
   • (D) (A) is false, but (R) is true.

   Answer: (A)

6. 6. CBSE 2024

   When a machine possesses the ability to mimic human traits, i.e., make decisions, predict the future, learn, and improve on its own, it is said to have :

   • (A) Computational Skills
   • (B) Learning Capability
   • (C) Artificial Intelligence ✓
   • (D) Cognitive Processing

   Answer: (C)

7. 7. CBSE 2024

   Statement 1 : To evaluate a models' performance, we need either precision or recall. Statement 2 : When the value of both Precision and Recall is 1, the F1 score is 0.

   • (A) Both statement 1 and statement 2 are correct.
   • (B) Both statement 1 and statement 2 are incorrect. ✓
   • (C) Statement 1 is correct, but statement 2 is incorrect.
   • (D) Statement 1 is incorrect, but statement 2 is correct.

   Answer: (B)

8. 8. CBSE 2024

   The concept of ____ is used to apply face filters on various social media platforms.

   • (A) NLP
   • (B) Computer Vision ✓
   • (C) Data Science
   • (D) Block chain Technology

   Answer: (B)

9. 9. CBSE 2024

   The 4 W's Problem Canvas helps in identifying the key elements related to the given problem. Which of the following is NOT one of the blocks of the Problem Canvas ?

   • (A) When ✓
   • (B) Where
   • (C) What
   • (D) Why

   Answer: (A)

10. 10. CBSE 2024

    Which domain of AI is used for interacting with virtual assistants such as Siri and Alexa ?

    • (A) Machine Learning (ML)
    • (B) Computer Vision (CV)
    • (C) Natural Language Processing (NLP) ✓
    • (D) Technical Vision (TV)

    Answer: (C)

Questions parents and students ask

How many marks does "Computer Vision" carry in CBSE Class 10 Artificial Intelligence?

In the CBSE papers of 2023–2026, this chapter carried about 3 marks and about 4 questions a year; by marks it ranks 5 in Artificial Intelligence.

Which are the most important (VVI) questions of "Computer Vision"?

The 4 questions above are from the board’s real papers, each with the years it was asked; the most-asked come first with their full model answers. All 4 written questions of this chapter, with answers, are in the Ask Medha app.

Do the answers follow the board’s marking scheme?

Yes. CBSE publishes its marking schemes; every model answer here is written point by point to the marks the board’s own scheme gives, and checked by a second, independent model.