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Method and apparatus for synthesis of higher resolution images

  • US 10,043,242 B2
  • Filed: 07/30/2014
  • Issued: 08/07/2018
  • Est. Priority Date: 07/31/2013
  • Status: Active Grant
First Claim
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1. An image-processing method comprising the steps of:

  • (i) obtaining a stream of images including a target object, each image of the stream of images being formed by an array of pixels;

    (ii) extracting a current frame portion from an image from the stream of images, the current frame portion being at least a portion of the pixels forming the image, corresponding to a region of interest in the image, the region of interest comprising the target object;

    (iii) providing a previously calculated super-resolved frame portion, which has been calculated in a previous iteration of steps (ii) to (iv) of the method, corresponding to the region of interest in the image;

    (iv) calculating an updated super-resolved frame portion from the current frame portion and the previously calculated super-resolved frame portion, both the updated super-resolved frame portion and the previously calculated super-resolved frame portion being weighted with respective weightings in the calculation, the weightings being applied on a frame portion basis such that for each frame portion the same weighting is applied to all pixels in the frame portion; and

    (v) repeating for a plurality of times steps (ii) to (iv) of the method for successive images, wherein the respective weightings used in the calculation of each of the successive updated super-resolved frame portions are such that the effective contribution made to the super-resolved frame portion by a given frame portion progressively decays with each successive calculated super-resolved frame portion.

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