change lenght and with raster cell

Discussion created by thomson2000 on Nov 1, 2013
I want georeferer a image (A) with a geotiff image (B)
I have change de georefer imagecell (A) in the same cellside of de geotiff image (B).
By a check I note that a building in Image (A) have een length 3.290 meters and de same building  in (B) is the length 29 meters

In the image (Attactach) uoe can see that the cellsize very big is compared to image (B) 

How can I change image (A) that the length of the building is the same as in image (B)  ????