An image display apparatus has an image display including scanning lines,
modulation lines and display devices driven through the scanning lines
and modulation lines, a scanning circuit for supplying a scanning signal
to the scanning line, a modulating circuit for supplying a modulation
signal to the modulation line, and a converting circuit for converting
the number of scanning lines of an input image signal. In addition, a
selecting section selects a scan method of any of a first scan method and
a second scan method and a changing section changes a vertical scaling
filter characteristic of the converting circuit in accordance with the
selected scan method. The vertical scaling filter characteristic in the
case of the first scan method is a characteristic having a weaker
elimination effect on high frequency components as compared with the
vertical scaling filter characteristic in the case of the second scan
method.