Real-Time Opaque and Semi-Transparent TV Logos Detection

1 One of the most important strategies created by TV broadcast stations to claim and protect video content ownership is the TV logo. With different colors, shapes and styles, TV logos identify the broadcast station, and sometimes even the kind of the broadcasted program. Consequently, the detection of TV logos is useful in applications ranging from detection of TV commercials to audience measure. In this paper, we propose an improved edgebased template matching to detect opaque, semitransparent and partially animated logos. The proposed algorithm could be implemented in a DSP for real-time logo recognition, because it is economic in memory use and requires low processing power. We tested during more than 24 hours our implementation to recognize logos of Brazilian and American TV channels and achieved 100% of correct recognition rate.