MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202631002709 A) filed by National Institute Of Technology, Patna, Bihar, on Jan. 9, for 'a variational optimization based pansharpening system for satellite images.'
Inventor(s) include Agrawal, Richa; and Ramakrishna, Yarlagadda.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure provides a system (100) for pansharpening satellite images and a method (400) for generation of high-resolution multispectral imagery. The system (100) includes a pre-processing unit (104) that performs histogram matching to generate a histogram-matched panchromatic image (202-2), an interpolation unit (106) that generates an up-sampled multispectral image (202-6), a cost function unit (108) including a data fidelity unit (108-2), a spatial regularization unit (108-4), and a spectral regularization unit (108-6), and an optimization unit (110) that minimizes a cost function (204) through Alternating Direction Method of Multipliers (304) to generate an estimated image (314). Unlike conventional pansharpening approaches that suffer from spectral distortion, spatial artifacts, or requirement for extensive training data, this variational optimization approach achieves balanced enhancement of spatial detail and spectral fidelity without training data while provision of computational efficiency across diverse satellite imaging platforms."
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