公开(公告)号：CA2059974A1

公开(公告)日：1992-11-09

申请号：CA2059974

申请日：1992-01-24

Applicant: IBM

Inventor： FERRACINI BRUNO ,  GONZALEZ-LOPEZ JORGE ,  PETTAZZI GIANCARLO

IPC: G06F3/153 ,  G06T3/40 ,  G09G5/36 ,  H04N1/393

Abstract: KI9-91-018 A METHOD AND APPARATUS FOR REDUCING A DIGITAL IMAGE Disclosed is a method and apparatus for reducing the size of a digital image from a first digital image to a second digital image by a specified scaling factor of G. The apparatus comprises an interpolator module configured to magnify the first digital image by a first scaling factor G1. The interpolator is further configured to output an intermediate digital image indicative of the magnified first image. The apparatus further comprises a shrinking module configured to shrink the intermediate digital image outputted by the interpolator module by a second scaling factor G2 to thereby generate the second digital image. Scaling factor G2 is a power of two.