الملخص

In this paper many algorithmswereapplied to" zoom –out" the images, like the traditional algorithm  (Linear Averaging) algorithm, then this algorithm was developed to a proposed  algorithm (Block Averaging) to be the new one in this paper. another algorithm is obtained from another application which is involved as an enhancement smoothing algorithms and will be used as a (zooming-out) scheme,  this algorithm is the (Median) algorithm. The obtained results of these algorithms were compared together to sign the better one. The MATLAB language is used to apply the algorithms.                   .