Field Of View For Video Surveillance

Field of View or FoV and Angle of View or AoV are surprisingly complex concepts. Essentially, they describe what the camera is able to “see” and that may seem self-explanatory. In image analysis, camera comparison, or quality projection, subtleties in these calculations can make all the difference.

Terms Used To Specify Field of View

Two common terms:

  • Angle Of View (AoV): The amount of coverage a camera provides, measured in degrees.
  • Horizontal Field Of View (HFoV or FoV): The width of the scene at a particular point.

These terms are often used interchangeably, but technically refer to different things. Other terms used to illustrate AoV and FoV:

  • Vertical Field of View (VFoV): A vertical measurement from the bottom to the top of the image.
  • Diagonal AoV: The measurement of angle from corner to corner of a camera’s image.

These two terms are not interchangeable with HFOV or AOV and occasionally listed in camera or lens specifications.

Field Of View vs. Target Distance

From a camera’s perspective, the further away a subject is from the camera, the wider the scene becomes. As the subject moves away from the camera the angle of view is the same, but the width increases. With that being said there are a few key factors to remember.

  • FoVs are not all the same width.
  • The distance between the camera and the subject is needed to determine the FoV width.
  • The farthest point away from the camera or the widest field of view is the location most likely to have difficulty delivering sufficient detail.

If you are looking to update or add new security features into your business, like video surveillance let RC Security help. Our continued research and partnerships with premium brands allow us to offer better quality every time.

About RC Security Consulting

RC Security Consulting protects the heart of Texas with design, installation, retrofit, repair, inspection, and monitoring of commercial security systems. We are centrally located in Collin County and provide service for almost 200 miles in all directions.

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