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A Key Pose Frame Extraction Approach Combined with Trajectory from Weightlifting Video

Abstract: In this paper, a trajectory guided scheme is proposed to extract the key poses#br# frame automatically. First, the barbell trajectory is extracted from the weight lifting sport video.#br# Then the barbell trajectory and poselet are combined for pose extraction. Some key poses are#br# extracted from the extreme point of the barbell trajectory. But the other poses are extracted by#br# using the poselet based algorithm. SVM(Support Vector Machine) classifiers based#br# HOG(Histogram of Gradient) is trained for each pose. Then the pose is detected in the multi-scale#br# images. Statistical similarity is computed in multi-scale to measure the possibility and determine#br# which is the best key frame. It resolves the problem of higher inter-frame similarity. The#br# experimental results show that the proposed scheme can improve both the precision and#br# performance of pose extraction.#br# Key words: trajectory; pose; key frame; support vector machine   

  • Online:2015-04-30 Published:2015-03-30

Abstract: In this paper, a trajectory guided scheme is proposed to extract the key poses
frame automatically. First, the barbell trajectory is extracted from the weight lifting sport video.
Then the barbell trajectory and poselet are combined for pose extraction. Some key poses are
extracted from the extreme point of the barbell trajectory. But the other poses are extracted by
using the poselet based algorithm. SVM(Support Vector Machine) classifiers based
HOG(Histogram of Gradient) is trained for each pose. Then the pose is detected in the multi-scale
images. Statistical similarity is computed in multi-scale to measure the possibility and determine
which is the best key frame. It resolves the problem of higher inter-frame similarity. The
experimental results show that the proposed scheme can improve both the precision and
performance of pose extraction.

Key words: trajectory, pose, key frame, support vector machine