Detection of individual activities in video sequences based on fast interference discovery and semi-supervised method

Abstract

Auto understanding of human activities in video is an increasing necessity in some application realms. The existing methods for human’s activity identification are divided into two methods: activity recognition and activity detection. The most important challenge in activity detection realm is activity boundary false detection which decreases system accuracy. In this research, an activity detection system was suggested denoting rapid interference and sewing it. Although it has improved accuracy it has also accuracy time, activities in suggested system were replayed more usefully and influenced by creating a descriptor denoting movable and apparent form. The suggested system was tested on Weizmann dataset and reached an accuracy of 93.34%. Furthermore, the proposed system in activity recognition was tested on KTH dataset and reached an accuracy of 93.63%. When activity recognition is stated as a learning case, sufficient labeled educational examples must be used. But labeling the video data is expensive, so the useful method uses unlabeled and labeled examples, during the learning process, this idea is the basic foundation of the semi-supervised method. In this research, a semi-supervised method with co-training algorithm appearance and active learning was suggested which improved the efficiency of semi-supervised learning that was tested.