The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2013
Filed:
Jan. 19, 2012
Armen Atoyan, Westmount, CA;
Armen Atoyan, Westmount, CA;
Concordia University, Montreal, QC, CA;
Abstract
The invention provides a fast method for a high-quality interpolation of a finite multidimensional dataset. It has particular application in digital image processing, including, but not limited to, processing of both still images and real-time image/data processing. The method uses discrete cosine and sine transforms of appropriate types to covert, in blocks of desired size, the initial dataset to the frequency domain. Proposed interpolators calculate a chain of inverse transforms of non-square sizes that perform the interpolation. The larger transform is broken into smaller transforms of non-square size using a recursive size reduction process of FFT-type, and the smaller transforms are calculated directly exploiting the symmetry properties of smaller interpolator functions involved. An output dataset is then assembled using the calculated transforms. The method avoids computationally costly process of inflating the coefficient space by padding zeros exploited for DCT-based interpolations previously.