Abstract:

For the purpose of improving the resolution of CR(Computed Radiography) images,we present a
new method based on wavelettransform.The grey level of image is segmented by low
 frequency coefficient,high frequency coefficient is strengthened  and
a new enhanced strategy of coefficient is given.The algorithm confirmati
on has executed to the CR perspective image of the chest,the image
visual effect has been improved,and the algorithm accuracy and the validity has been confirmed.

Key words: wavelet transform, computed radiography(CR) image, superresolution