An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Definition Specifies the size of the object of interest with respect to the field of view.
Target size example: Large Task: Vehicle identification
Target size example: Small Task: Facial recognition
The size of the region of interest (target) with respect to the size of the field of view directly affects the ability to recognize that target when the camera is at its maximum optical zoom. The larger the target, the more details can be discerned.
The perceived target size is dependent on the actual target size, its distance from the camera, and the camera’s field of view. As a basic concept, targets can be classified as large or small, as the figure shows. However, the VQiPS working group is developing measurements to more precisely define target size.
Scene Content Consider: What is the size of the object of interest with respect to the field of view?
Scene Target Size
Content
Large
The target occupies a large percentage of the frame
Small
The target occupies a smaller percentage of the frame
