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Spatio-temporal graphical user interface for querying videos

  • US 7,598,977 B2
  • Filed: 04/28/2005
  • Issued: 10/06/2009
  • Est. Priority Date: 04/28/2005
  • Status: Active Grant
First Claim
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1. A method for summarizing a video spatially and temporally, comprising:

  • specifying a spatial query for a video acquired of a scene by a camera, in which the spatial query specifies a spatially contiguous set of pixels within a particular frame of the video;

    specifying a temporal query for the video, in which the temporal query specifies a temporally contiguous set of pixels in multiple adjacent frames;

    selecting frames of the a video according to the spatial query and the temporal query; and

    compositing the selected frames into an image that represents spatial and temporal characteristics of the scene, in which the compositing is according to a predetermined order and predetermined opacities, in which the compositing is according to;



    i = 1 n


    α

    i
    ×

    i n
    = 1
    ,

    and



    α

    i
    ×

    i n
    = α

    j
    ×

    j n



    for



    all



    i


    j
    ,
    where α

    i is an opacity for an ith layer in the image, and n represents a number of selected images.

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