Apparatus for detecting the number of persons contacted with advertising medium and method of detecting the number of persons contacted with advertising medium

An apparatus for detecting the number of persons contacted with an advertising medium, comprising:

• a visual-recognition range calculation means for calculating a visual recognition ground range of said advertising medium based on a position of said advertising medium, a height above the ground of said advertising medium and a direction of an advertising surface of said advertising medium;
• a section extraction means for extracting a plurality of sections in an area allowed persons to pass through, from a plurality of sections contained in the visual recognition ground range calculated by said visual-recognition range calculation means;
• a section exclusion means for excluding at least one section that is impossible to visually recognize said advertising medium from the plurality of sections extracted by said section extraction means;
• an area specifying means for specifying an area that contains the remaining sections except the at least one section excluded by said section exclusion means;
• and
• a contacted number calculation means for calculating the number of persons contacted with said advertising medium by obtaining fluid population data of persons moving toward said advertising medium in the area specified by said area specifying means.