title: Why use LUV color space to present objects in object detection?
body: <p>In this paper,<a href="http://vision.ucsd.edu/sites/default/files/DollarPAMI14pyramids_0.pdf" rel="nofollow">Fast feature pyramids for object detection</a>,they use LUV color space to present pedestrians.After I searched more papers, i found many of papers used LUV color space.</p>
  
  <p>My questions:
  1)what's the advantages of LUV color space over RGB in object detection?
  2)what's the characteristic of LUV color space?</p>
  
  <p>Thanks.</p>