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AI-900 · Question #227

You have a security system that analyzes images from CCTV to provide authorized staff entry into restricted area. Which type of computer vision does the system use?

The correct answer is C. facial detection and facial recognition. A security system granting entry based on CCTV analysis uses facial detection to locate faces and facial recognition to identify authorized individuals.

Submitted by saadiq_pk· Mar 30, 2026Describe features of computer vision workloads on Azure

Question

You have a security system that analyzes images from CCTV to provide authorized staff entry into restricted area. Which type of computer vision does the system use?

Options

  • Aoptical character recognition (OCR)
  • Bsemantic segmentation
  • Cfacial detection and facial recognition
  • Dimage analysis

How the community answered

(24 responses)
  • A
    4% (1)
  • B
    13% (3)
  • C
    79% (19)
  • D
    4% (1)

Why each option

A security system granting entry based on CCTV analysis uses facial detection to locate faces and facial recognition to identify authorized individuals.

Aoptical character recognition (OCR)

Optical character recognition (OCR) is used to extract text from images, which is not the primary function for granting access based on a person's identity.

Bsemantic segmentation

Semantic segmentation assigns a class label to each pixel in an image (e.g., "person," "door"), but it does not identify specific individuals for access control.

Cfacial detection and facial recognitionCorrect

To provide authorized staff entry into a restricted area based on CCTV images, the system must first locate human faces (facial detection) and then verify their identity against a database of authorized personnel (facial recognition). This combination is essential for access control.

Dimage analysis

Image analysis is a broad term that encompasses many computer vision tasks, but "facial detection and facial recognition" is the specific and most accurate description for identifying individuals for access control.

Concept tested: Facial detection and recognition for access control

Source: https://learn.microsoft.com/en-us/azure/ai-services/face/overview

Topics

#Facial Recognition#Facial Detection#Computer Vision

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