Absolute Category Rating

Nowadays, Absolute Category Rating is a topic that has gained great relevance in today's society. With the constant evolution of technology and unlimited access to information, Absolute Category Rating has become a focal point for debates, discussions and analysis in all areas. Whether in the political, economic, social or cultural sphere, Absolute Category Rating is present in our daily lives in one way or another. It is a topic that arouses passions, diverse opinions and moves crowds. In this article, we will explore different aspects related to Absolute Category Rating, analyzing its impact, its evolution and its relevance today.

A five-level scale for rating quality.

Absolute Category Rating (ACR) is a test method used in quality tests.[1][2]

The levels of the scale are, sorted by quality in decreasing order:

  • Excellent
  • Good
  • Fair
  • Poor
  • Bad

In this method, a single test condition (generally an image or a video sequence) is presented to the viewers once only. They should then give a quality rating on an ACR scale. Test conditions should be presented in a random order per test person.

The ACR scale is evaluated based on numbers that are assigned to the individual items, where Excellent equals to 5 and Bad equals to 1. The average numeric score over all experiment participants, for each test condition that was shown, is called the mean opinion score. It may also be used for telephony voice quality to give a mean opinion score.

See also

References

  1. ^ P.910 : Subjective video quality assessment methods for multimedia applications. ITU-T Recommendation, approved in 1999-09. Retrieved on 2008-05-29.
  2. ^ tsbmail. "P.800 : Methods for subjective determination of transmission quality". www.itu.int. Retrieved 2017-02-01.


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