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计算机科学技术学报 ›› 2020,Vol. 35 ›› Issue (3): 564-575.doi: 10.1007/s11390-020-0246-3
所属专题: Artificial Intelligence and Pattern Recognition; Computer Graphics and Multimedia
• Special Section of CVM 2020 • 上一篇 下一篇
Hui-Si Wu1,*, Meng-Shu Liu1, Lu-Lu Yin1, Ping Li2, Zhen-Kun Wen1,*, Hon-Cheng Wong3
Hui-Si Wu1,*, Meng-Shu Liu1, Lu-Lu Yin1, Ping Li2, Zhen-Kun Wen1,*, Hon-Cheng Wong3
视频分割通常用于不同的计算机视觉应用,例如动作识别,场景解析和视频编辑。近年来,视频分割已取得较大程度的改进,但仍然存在局限性,在视频分割中难以达到稳定的性能。本文中,我们根据物理中的水平平衡原理进行信息质心检测,从而提出一种基于信息质心和改进SaliencyCut的视频自动分割方法。
与现有方法不同,我们提出了信息质心以提供另一种维度的图像信息提高视频分割的准确性。特别地,我们的信息质心是根据图片中的信息水平平衡原理,通过汇总所有图像信息到一个质心点来实现的。因此,它能有效提高目标对象的显著性并抑制背景区域。我们还结合了图像的颜色和坐标信息来计算图片中的局部信息质心和全局信息质心。然后根据检测到的信息质心计算出视频中所有帧的显著图。我们又依据视频前后帧之间的时空一致性,提出了信息质心平滑来增强显著性检测,可以进一步纠正复杂视频中可能由于颜色或运动的急剧变化造成的劣质显著图信息。最后,基于信息质心的显著图和改进SaliencyCut,我们获得了精准的分割结果。我们的方法是在DAVIS数据集上评估的,它包括各种具有挑战性的视频。为评估我们的方法,我们还与最先进的方法进行了比较。令人满意的视觉结果和比较统计结果均证明了我们的方法自动检测的优势和可靠的视频分割效果。
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