Find the pixel size of the images usually right clicking the image in your file browser and going to properties then details tab. Go into 3ds max and drop in a plane and input those values into your planes height and width. Probably set it as a floor plane since this is a ground plan. Throw a new material onto the plane by…
Ahhhh, Thank you so much @zachagreg. Your scripts is so damn useful, I don't have to manually do the import reference. Beside it imports accurate scale of the image. Thanks alot man.