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:
Sep. 26, 2000
Filed:
Sep. 16, 1997
Chung-ya Lu, Hsinchu, TW;
Kuei-ann Wen, Hsinchu, TW;
Other;
Abstract
Image to be transmitted is divided into blocks. The block size varies in each stage of transmission. The blocks are down-sampled to a fixed size for polynomial approximation coding (PAC). The PAC's are derived from a regressive model which is a statistical tool for data analysis. A two-dimensional polynomial equation is used to approximate the relation of the image data and their positions. The coefficients of the 2-D polynomial equation is coded and transmitted to represent the initial image. In the next stage, same or similar coding is conducted to the residual image. After a decided number of stages of transmission an approximated image is reconstructed. A novel iterative coding system for progressive image transmission is disclosed.