Confused with the jargon used in today’s signage industry? Do terms such as ‘cluster’ ‘contrast ratio’ or ‘refresh rate’ make you scratch your head? This glossary of terminology will help light the way to understanding many of the terms associated with Outdoor Digital Advertising.

To navigate through the glossary, click on the letter above to go directly to that glossary page.

[G]

GAMMA CORRECTION

A process used with video images to correct brightness and internal micro-contrast within the image. Gamma correction allows a change of ratio between the brightest red component and weakest red.

GROSS IMPRESSIONS

The sum of impressions registered against a target audience based on a GRP level of days or weeks in a schedule.

GROSS RATING POINT (GRP)

The total number of impressions delivered by a media schedule expressed as a percentage of a market population. One rating point represents a circulation equal to 1% of the market population.

GROUND SIGN

A freestanding sign with no visible support structure.