Silhouette lines are extracted automatically from image,by acquiring points of extremum of first directional derivative perpendicular to silhouette line with Fourier Transform in frequency domain.

 
  • 本文提出通過(guò)傅里葉變換,在頻率域通過(guò)求垂直于物體輪廓線(xiàn)的一階方向導數,并檢測其極值點(diǎn)(極大極小)來(lái)確定物體輪廓。
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