Channel repertoires, the subsets of available channels that viewers actually watch, have typically been measured by relying on respondent recall. Using minute-by-minute peoplemeter data from Beijing, this study operationalized channel repertoire as the channels actually watched for 10 or more consecutive minutes during the week. On average, Chinese viewers used 13 channels, about one third of t...

This paper describes a new head detection method for people counting in crowded environments from a single camera. Our method adopts skeleton graph to distinguish person among people in crowded enviroments. The usage of skeleton graph is the main difference between this method and the traditional ones. Firstly, the skeleton graphs are calculated for each selected blob in the scene after foregro...

Tracking multiple people using cameras is similar to the well-studied problem of tracking multiple radar or sonar echoes. This thesis shows that current camera-based tracking algorithms convert each image in a video sequence to a list of targets through a segmentation step, and pass this target set to a traditional multiple-point-target tracking algorithm. Various tracking vision-based strategi...