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:
Jul. 01, 2014
Filed:
Nov. 24, 2010
Ren Kuan Liang, Hsinchu Hsien, TW;
Jen-shi Wu, Hsinchu Hsien, TW;
Ren Kuan Liang, Hsinchu Hsien, TW;
Jen-shi Wu, Hsinchu Hsien, TW;
MStar Semiconductor, Inc., Hsinchu Hsien, TW;
Abstract
A Hadamard transform-based image compression method includes performing a Hadamard transform on 2pixel values according to a product of a 2×2stage Hadamard matrix and a 2×2adjustment matrix to generate 2conversion values, where k is a positive integer and at least one of the 2conversion values is zero. The adjustment matrix satisfies a condition that: when the 2pixel values are divided into G pixel groups each comprising 2/G adjacent pixels values and the adjustment matrix is multiplied with a first 2×1 matrix formed by the 2pixel values to transform the first 2×1 matrix to a second 2×1 matrix, each pixel value of the first matrix is transformed to an average of a pixel group comprising the pixel value to form the second 2×1 matrix.