a robust preprocessing algorithm for low-resolution soccer videos
Multimedia transmissions, especially of sport events, are animportant share of the services offered by mobile network operators. Due to limited capacity, lossy compression codecshave to be used, inducing a significant quality degradation. The quality impairments can particularly be observed in soccer games, when the ball is blurred or even totally disappears on low-resolution user terminals. We present a suitable preprocessing of the original video by means of ball sharpening or enlarging in the original video sequence to avoid problems caused by resolution down-sampling and compression. The proposed system includes a novel initial ball-recognition algorithm and an improved ball-trajectory tracking. Our proposed algorithm runs robustly and is computational very economical.
visual content analysis ball tracking recognition image processing segmentation