Circulant Temporal Encoding for Video Retrieval and Temporal Alignment

摘要: We address the problem of specific video event retrieval. Given a query event, e.g., concert Madonna, goal is to retrieve other videos same that temporally overlap with query. Our approach encodes frame descriptors jointly represent their appearance and temporal order. It exploits properties circulant matrices efficiently compare in frequency domain. This offers significant gain complexity accurately localizes matching parts videos. The can be compressed domain product quantizer adapted complex numbers. In this case, retrieval performed without decompressing descriptors. also consider alignment set exploit confidence an estimate offset computed for all pairs by our approach. robust algorithm aligns on global timeline maximizing consistent matches. enables synchronous playback given scene.