The commonly-used interpolation algorithms of image zooming are the nearest neighbor algorithm and linear interpolation algorithm.

The experiment results show that the image zooming based on the improved Catmull-Rom spline has much less interpolation errors and only a little increase in processing time,and may be used on t.

As one kind of important processingmethod in the digital image processing field, image interpolation is widely used in imagereconstructing, image zooming, image tone level adjusting, image blurring ,sharp, and soon.

The basic realization algorithms for the electronic chart are introduced,such as drawing the coastline,chart navigation,minifying and enlarging,etc.

the Slider controls sliding can control the smoothness of the view zooming in and out and its range can control the scope of the zooming.

It is especially expatiated that a solution is applied to the key technologies of graph zooming, percentage filling, screen flicker, and the problem of page switching with the object oriented programming technology.

Algorithm of text image scaling based on LCD scaler;

The principle and hardware implementation of digital image scaling;

In this paper, we analyze the key technologies such as video decoding, de-interlacing and image scaling for the design of an LCD driver board.