Adaptive image scaler for optimizing output image quality on the basis of input image signal and method thereof

摘要

An adaptive image scaler for optimizing output image quality on the basis of an input image signal and a method thereof are disclosed. The adaptive image scaler comprises an image signal analyzer for analyzing an input image signal and outputting size information of horizontal and/or vertical components of the input image signal. The scaler further comprises a filter generator for calculating a filter coefficient to be used for scaling and generating a scaling filter on the basis of the calculated coefficient. The scaler further comprises an image processor for performing horizontal filtering and/or vertical filtering for the input image signal using the scaling filter.