Methods and apparatus to identify exposure to 3D media presentations
AssigneeThe Nielsen Company (US), LLC
InventorMark Richard Cave
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Abstract
Methods and apparatus to identify exposure to three dimensional media presentations are disclosed. An example method includes detecting a first brightness level with a first sensor and a second brightness level with a second sensor at a first time. A third brightness level is detected with the first sensor and a fourth brightness level is detected with the second sensor at a second time later than the first time. A 3D media counter is incremented when either: the first brightness is greater than the second brightness and the third brightness is less than the fourth brightness, or the first brightness is less than the second brightness and the third brightness is greater than the fourth brightness. The media is identified as 3D media when the 3D media counter exceeds a threshold.
Claims19
A method of detecting a presentation format of media, the method comprising:
- detecting a first brightness level with a first sensor and a second brightness level with a second sensor at a first time;
- detecting a third brightness level with the first sensor and a fourth brightness level with the second sensor at a second time later than the first time;
- and
- incrementing a 3D media counter when either:
- the first brightness is greater than the second brightness and the third brightness is less than the fourth brightness, or
- the first brightness is less than the second brightness and the third brightness is greater than the fourth brightness;
- and
- identifying the media as 3D media when the 3D media counter exceeds a threshold.
An apparatus to identify a format of media, the apparatus comprising:
- a first light sensor to detect a first brightness level through a first polarized lens;
- a second light sensor to detect a second brightness level through a second polarized lens, the second lens being perpendicularly polarized with respect to the first lens;
- and
- a comparator to identify the media as 3D media if the first and second brightness levels correspond to a repeating, alternating pattern in which the first brightness level is greater than the second brightness level at a first time and the second brightness level is greater than the first brightness level at a second time later than the first time.
A tangible machine-readable storage device or storage disk comprising instructions which, when executed, cause a machine to at least:
- detect a first brightness level with a first sensor and a second brightness level with a second sensor at a first time;
- detect a third brightness level with the first sensor and a fourth brightness level with the second sensor at a second time later than the first time;
- and
- increment a 3D media counter when either:
- the first brightness is greater than the second brightness and the third brightness is less than the fourth brightness, or
- the first brightness is less than the second brightness and the third brightness is greater than the fourth brightness;
- and
- identify the media as 3D media when the 3D media counter exceeds a threshold.
Dependencies are inferred from the claim text.