The thesis is dedicated to creation more accurated raster of the cadastral map in the cadastral district Těchanov. In the introductory part theoretical findings from the area of more accurate transformation are summarized and several terms related to raster problemacy are explained. The following chapter deals with the used software. Another part deals with description of the practical part, i.e. making out transformational key accurating transformation. The final chapters are dedicated to verifying the result of transformation by an independent control using the comparison of lenghts directly measured in terrain, measured on the original map of land cadastral or cadastral map and lenghts discovered from raster scan images before and after accurating transformation.