Abstract: Methods and apparatus to count persons in a monitored environment are disclosed. An example apparatus to count the number of people in a monitored environment is described, which includes an image sensor to collect a plurality of pixels, a pseudorandom number generator to pseudorandomly select at least one of a row of the pixels or a column of the pixels, a reader to read first pixel data generated by first pixels of the image sensor at a first time, the first pixels located in at least one of the row of the pixels or the column of the pixels, a comparator to compare the first pixel data with second pixel data generated by the first pixels at a second time different than the first time to generate first change values, and a counter to generate a count of persons based on the first change values.

Abstract: Methods and apparatus to monitor media exposure are disclosed. An example implementation includes transmitting a start signal from a mailable meter to at least one mailable meter to at least one wearable meter; receiving a first audio at the mailable meter upon transmission of the start signal; receiving a second audio at the at least one wearable meter upon reception of the start signal; deriving a signature of the first received audio at the mailable meter; deriving a signature of the second received audio at the at least one wearable meter; transmitting the signature of the second received audio and an identification number from the at least one wearable meter to the mailable meter; and storing the signature of the first received audio and the identification number at the mailable meter as audience measurement data if the signature of the first received audio and the signature of the second received audio correlate.

Abstract: Example methods and apparatus for associating media devices with a demographic composition of a geographic area are disclosed. A disclosed example method includes receiving a plurality of Internet Protocol addresses assigned to a media device associated with a panel member, determining a most used Internet Protocol address from the plurality of Internet Protocol addresses, accessing geographic information and determining a geographic location corresponding to the most used Internet Protocol address, accessing demographic information and determining a demographic profile associated with the geographic location, and associating at least one of the geographic location or the demographic profile with the media device.

Abstract: Methods and apparatus to count persons in a monitored environment are disclosed. An example apparatus to count the number of people in a monitored environment is described, which includes an image sensor to collect a plurality of pixels, a pseudorandom number generator to pseudorandomly select at least one of a row of the pixels or a column of the pixels, a reader to read first pixel data generated by first pixels of the image sensor at a first time, the first pixels located in at least one of the row of the pixels or the column of the pixels, a comparator to compare the first pixel data with second pixel data generated by the first pixels at a second time different than the first time to generate first change values, and a counter to generate a count of persons based on the first change values.

Abstract: Methods and apparatus to monitor media exposure are disclosed. An example implementation includes transmitting a start signal from a mailable meter to at least one mailable meter to at least one wearable meter; receiving a first audio at the mailable meter upon transmission of the start signal; receiving a second audio at the at least one wearable meter upon reception of the start signal; deriving a signature of the first received audio at the mailable meter; deriving a signature of the second received audio at the at least one wearable meter; transmitting the signature of the second received audio and an identification number from the at least one wearable meter to the mailable meter; and storing the signature of the first received audio and the identification number at the mailable meter as audience measurement data if the signature of the first received audio and the signature of the second received audio correlate.

Abstract: Methods and apparatus to construct and transmit content-aware watermarks are disclosed herein. An example method of creating a content-aware watermark includes selecting at least one word associated with a media composition; representing the word with at least one phonetic notation; obtaining a proxy code for each phonetic notation; and locating the proxy code in the content-aware watermark.

Abstract: Example methods and apparatus for associating media devices with a demographic composition of a geographic area are disclosed. A disclosed example method includes receiving a plurality of Internet Protocol addresses assigned to a media device associated with a panel member, determining a most used Internet Protocol address from the plurality of Internet Protocol addresses, accessing geographic information and determining a geographic location corresponding to the most used Internet Protocol address, accessing demographic information and determining a demographic profile associated with the geographic location, and associating at least one of the geographic location or the demographic profile with the media device.

Abstract: Apparatus, methods, and articles of manufacture for media monitoring are disclosed. In particular, the example apparatus, methods, and articles of manufacture determine a media source type associated with a media signal and select an encoding or decoding mode based on the media source type. An encoding operation encodes the media signal using the selected encoding mode and a decoding operation decodes the media signal using the selected decoding mode.

Abstract: Example methods, apparatus, and articles of manufacture determine compliance with usage guidelines of an audience measurement system. Initially, location information associated with an audience member is obtained. It is then determined whether the audience member is in compliance with the usage guidelines based on the location information. Media monitoring information corresponding to the location information is then tagged as non-compliant if the audience member is not in compliance with the usage guidelines.

Abstract: Methods and apparatus to maintain audience privacy while determining viewing of video-on-demand programs are disclosed. An example method for monitoring a displayed VOD program disclosed herein comprises determining a first set of metering information based on a first set of data collected at a subscriber site, determining a second set of metering information based on a second set of data reported by at least one of a VOD server and a head-end, determining a third set of data based on the second set of data, and combining the first and third sets of metering information to credit the displayed VOD program.