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METHOD AND DEVICE FOR GENERATING A PANORAMIC IMAGE FROM A VIDEO SEQUENCE

  • US 20090153647A1
  • Filed: 04/23/2007
  • Published: 06/18/2009
  • Est. Priority Date: 04/24/2006
  • Status: Abandoned Application
First Claim
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1. A method of generating a panoramic image from a video sequence composed of several consecutive images, each image comprising at least one pixel associated to luminance and chrominance components, the method being performed by a device comprising a panoramic structure having pixels associated to components equal to zero, wherein the method comprises the following successive steps:

  • a) assigning components initialized to zero to pixels of an image called previous mix image and storing the previous mix image in the panoramic structure;

    b) positioning a current image having first and second portions into the panoramic structure with respect to the previous mix image, a first area of pixels of the current image corresponding to an area of pixels of the previous mix image, a second area of pixels of the current image corresponding to an area of pixels of the panoramic structure;

    c) identifying pixels belonging to the first portion and to the first area of the current image;

    d) for each identified pixel, if the identified pixel is associated to components resulting from a weighted sum of components stem from a number of images inferior to a predefined thresholds,computing components resulting from the weighted sum of components associated to the identified pixel of the current image and of components associated to the corresponding pixel of the previous mix image,assigning components to the corresponding pixel of the previous mix image to obtain components associated to a pixel of a current mix image;

    e) for each pixel belonging to the second portion and to the second area of the current image assigning components associated to the pixel of the current image to the corresponding pixel of the panoramic structure to obtain components associated to a pixel of the current mix image;

    f) for each pixel belonging to the second portion and to the first area of the current image, assigning components associated to the pixel of the current image to the corresponding pixel of the previous mix image to obtain components associated to a pixel of a current mix image;

    g) for each pixel belonging to the first portion and to the second area, assigning components associated to the pixel of the current image to the corresponding pixel of the panoramic structure to obtain components associated to a pixel of a current mixed image; and

    h) considering the pixels of the current mix image as the pixels of the previous mix image and repeating steps b) to h) until a stop condition is fulfilled.

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