Back to results
US 7,340,099 B2Granted
System and method for image fusion
AssigneeUniversity of New Brunswick
InventorYun Zhang
Life of this patent
Estimating the term…
Abstract
A method of fusing a low resolution multispectral image with a high resolution panchromatic image comprising the step of generating a new synthetic pan image using multispectral bands from the multispectral image.
Claims20
A method of fusing a low resolution multispectral image having image bands with a high resolution panchromatic image having one image band, comprising the steps of:
- selecting image bands from the multispectral image according to the spectral coverage of the panchromatic image;
- determining the full grey value range and the common mean wherein the full grey value range is equal to the maximum grey value range of all the original image bands used in the fusion and the common mean is located at the centre of the full grey value range;
- performing a histogram standardization on the selected multispectral bands and the panchromatic band;
- and
- generating a new synthetic panchromatic image using the selected multispectral bands.
2 more elements
A method of fusing a low resolution multispectral image with a high resolution panchromatic image comprising the steps of:
- (a) selecting from the multispectral image, multispectral bands having spectral ranges which overlap the spectral range of panchromatic image;
- (b) calculating means, deviations, and a covariance matrix from all the image bands;
- (c) performing a histogram standardization on the selected multispectral bands and the panchromatic image;
- (d) standardizing all the bands in the multispectral image and the panchromatic image using the means and deviations;
- (e) determining coefficient values using the selected multispectral bands and the panchromatic image;
- (f) calculating band weights for simulating a synthetic panchromatic image from the covariance matrix;
- (g) generating a synthetic panchromatic image using the coefficient values and the selected multispectral bands;
- (h) generating a synthetic panchromatic image using the band weights and the selected standardized bands;
- and
- (i) performing a Product-Synthetic Ratio using the standardized panchromatic band, the standardized multispectral bands and the synthetic panchromatic image;
- (j) generating one or more fused image bands using the standardized panchromatic image, one or more of the standardized multispectral bands, and the synthetic panchromatic image.
8 more elements
Dependencies are inferred from the claim text.