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Histogram of oriented gradient detector with color-invariant gradients in Gaussian color space

机译:高斯色空间中具有颜色不变梯度的定向梯度检测器的直方图

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摘要

The histogram of oriented gradients has been proven to be a successful method of object detection, especially for pedestrian detection in images and videos. However, the question of how to make maximal use of color information for gradient calculation has not been thoroughly investigated. We propose a simple yet effective adaption that uses a combination of grayscale-based gradient and color-invariant-based gradients (after Geusebroek et al.) to replace the original gradient definition. Our experiments show that such a combination achieves a 30% reduction in miss rate, using the same experiment setting and the same evaluation criteria as Dalai et al. We have also measured the trade-off between the performance and computational cost by using a more sophisticated quadratic kernel instead of a linear kernel. While it can reduce the miss rate further by 10% to 20%, using a quadratic kernel can take as much as 70 times more running time for the original (Dalai et al. 2006) dataset.
机译:定向梯度直方图已被证明是一种成功的对象检测方法,特别是对于图像和视频中的行人检测。但是,尚未充分研究如何最大程度地利用颜色信息进行梯度计算的问题。我们提出了一种简单而有效的适应方法,该方法使用了基于灰度的渐变和基于颜色不变的渐变的组合(在Geusebroek等人之后)来代替原始的渐变定义。我们的实验表明,使用与Dalai等人相同的实验设置和相同的评估标准,这样的组合可将漏检率降低30%。我们还通过使用更复杂的二次内核而不是线性内核来衡量性能和计算成本之间的权衡。尽管它可以进一步将未命中率降低10%到20%,但是对于原始数据集(Dalai et al。2006),使用二次核可能会花费多达70倍的运行时间。

著录项

  • 来源
    《Optical engineering》 |2010年第10期|p.208-214|共7页
  • 作者

    Zhen Lei; Tao Fang; Deren Li;

  • 作者单位

    Jiao Tong University Institution of Image Processing and Pattern Recognition Shanghai, China;

    Jiao Tong University Institution of Image Processing and Pattern Recognition Shanghai, China;

    Wuhan University Laboratory for Information Engineering in Surveying,Mapping and Remote Sensing Wuhan, 430072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    object detection; color invariant; histogram of oriented gradients; scale-invariant feature transform.;

    机译:物体检测颜色不变定向梯度直方图;尺度不变特征变换。;

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