At 12:46 PM 10/4/2001 +0100, you wrote: >I have 2 aerial photos (format is black-and-white bitmap image files) of >the same location taken on separate dates. If I can succesfully line up >the images, can I subtract one image from the other to reveal the >differences? If so, how? Suggestions appreciated. Thanks.
Use image processing software. ERMapper is great. What you are describing falls under the category of change analysis or change detection. cheers Marc Pelletier Traxis inc. _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body.
