What is meant by Average Content Distance in Videos generated by GANs?












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$begingroup$


I'm reading a research paper on generating/synthesizing videos:
MoCoGAN: Decomposing Motion and Content for Video Generation



To evaluate the generated videos, they have used a metric called 'Average Content Distance'. I couldn't find any material on google related to this. Can anyone please explain what Average Content Distance means?



Here is the snippet from the paper




we first computed
the average color of the generated shape in each
frame. Each frame was then represented by a 3-dimensional
vector. The ACD is then given by the average pairwise L2
distance of the per-frame average color vectors.




What I understood from this is as follows:

For each frame, convert rgb to gray (average of color). Then for successive frame, calculate the l2 distance.
$$frac{1}{MN} sum_{x=1}^{M}sum_{y=1}^{N}{(Frame_i(x,y) - Frame_{i+1}(x,y))^2}$$
This gives ACD. Have I understood it correctly?



Also, how does this metric represents quality of a video? How can this be used to compare qualities of different generated videos? You can also point me towards some references.



Thanks!









share









$endgroup$

















    0












    $begingroup$


    I'm reading a research paper on generating/synthesizing videos:
    MoCoGAN: Decomposing Motion and Content for Video Generation



    To evaluate the generated videos, they have used a metric called 'Average Content Distance'. I couldn't find any material on google related to this. Can anyone please explain what Average Content Distance means?



    Here is the snippet from the paper




    we first computed
    the average color of the generated shape in each
    frame. Each frame was then represented by a 3-dimensional
    vector. The ACD is then given by the average pairwise L2
    distance of the per-frame average color vectors.




    What I understood from this is as follows:

    For each frame, convert rgb to gray (average of color). Then for successive frame, calculate the l2 distance.
    $$frac{1}{MN} sum_{x=1}^{M}sum_{y=1}^{N}{(Frame_i(x,y) - Frame_{i+1}(x,y))^2}$$
    This gives ACD. Have I understood it correctly?



    Also, how does this metric represents quality of a video? How can this be used to compare qualities of different generated videos? You can also point me towards some references.



    Thanks!









    share









    $endgroup$















      0












      0








      0





      $begingroup$


      I'm reading a research paper on generating/synthesizing videos:
      MoCoGAN: Decomposing Motion and Content for Video Generation



      To evaluate the generated videos, they have used a metric called 'Average Content Distance'. I couldn't find any material on google related to this. Can anyone please explain what Average Content Distance means?



      Here is the snippet from the paper




      we first computed
      the average color of the generated shape in each
      frame. Each frame was then represented by a 3-dimensional
      vector. The ACD is then given by the average pairwise L2
      distance of the per-frame average color vectors.




      What I understood from this is as follows:

      For each frame, convert rgb to gray (average of color). Then for successive frame, calculate the l2 distance.
      $$frac{1}{MN} sum_{x=1}^{M}sum_{y=1}^{N}{(Frame_i(x,y) - Frame_{i+1}(x,y))^2}$$
      This gives ACD. Have I understood it correctly?



      Also, how does this metric represents quality of a video? How can this be used to compare qualities of different generated videos? You can also point me towards some references.



      Thanks!









      share









      $endgroup$




      I'm reading a research paper on generating/synthesizing videos:
      MoCoGAN: Decomposing Motion and Content for Video Generation



      To evaluate the generated videos, they have used a metric called 'Average Content Distance'. I couldn't find any material on google related to this. Can anyone please explain what Average Content Distance means?



      Here is the snippet from the paper




      we first computed
      the average color of the generated shape in each
      frame. Each frame was then represented by a 3-dimensional
      vector. The ACD is then given by the average pairwise L2
      distance of the per-frame average color vectors.




      What I understood from this is as follows:

      For each frame, convert rgb to gray (average of color). Then for successive frame, calculate the l2 distance.
      $$frac{1}{MN} sum_{x=1}^{M}sum_{y=1}^{N}{(Frame_i(x,y) - Frame_{i+1}(x,y))^2}$$
      This gives ACD. Have I understood it correctly?



      Also, how does this metric represents quality of a video? How can this be used to compare qualities of different generated videos? You can also point me towards some references.



      Thanks!







      gan





      share












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      asked 2 mins ago









      Nagabhushan S NNagabhushan S N

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