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:
Oct. 16, 2001
Filed:
Dec. 21, 1998
Shaun Timothy Love, Lexington, KY (US);
Ning Ren, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A method of enlarging a visual image including an M by N matrix of pixels, with each of the pixels having at least one color component, and each of the color components having one of a plurality of color values, includes the step of selecting a two pixel by two pixel submatrix within the M by N matrix. An enlarged image area, including an X by Y matrix of pixels corresponding to the two pixel by two pixel submatrix of the M by N matrix, is defined. The X by Y matrix includes four comer pixels and a plurality of intervening pixels, with each of X and Y being greater than two. Each of the pixels in the X by Y matrix has X and Y coordinates. The color value of the at least one color component of each of the pixels in the two pixel by two pixel submatrix of the M by N matrix is assigned to a corresponding one of the four comer pixels in the corresponding X by Y matrix. The X and Y coordinates of a selected intervening pixel of the corresponding X by Y matrix are identified. A first random number is added to the X coordinate of the selected intervening pixel to obtain a randomized X coordinate. A second random number is added to the Y coordinate of the selected intervening pixel to obtain a randomized Y coordinate. A closest one of the four comer pixels which is closest to a point associated with each of the randomized X coordinate and the randomized Y coordinate is determined. The color value of the at least one color component of the closest one of the four comer pixels is duplicated in the selected intervening pixel.