Skip to main content
U.S. flag

An official website of the United States government

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.

VQiPS: GUC Aspects

Guide to Defining Video Quality Requirements

| Getting Started | Use Cases | Use Classes | GUC Aspects | Usage Timeframe | Discrimination Level | Target Size | Motion | Lighting Level | GUC Questionnaire |

VQiPS: Use Classes

Generalized Use Class Aspects
A use class shares certain important aspects of specific use cases that are common to other use cases, allowing you to make generalizations between them. All use cases have an analyst and a scene under observation. For each of your use cases, apply the Generalized Use Class Questionnaire to derive generalized aspects from the analyst’s intended use of the video (Use Characteristics) and what is in the scene under observation (Scene Content).

Generalized Use Class Aspects
For each use case, determine the specific value for each aspect. The combination of common values across use cases will form your generalized use classes.

Each of the following generalized use class aspects can impact the quality of the video content as seen and used by the analyst. Click any of the following generalized use class aspects or those in the figure for aspect information.

Use Characteristics

Scene Content

Previous   |   Next


Created September 29, 2016, Updated October 19, 2016