Aerial Photograph |
Map |
• It is a central projection. |
• It is an orthogonal projection. |
• The scale of the photograph is not uniform. |
• The scale of the map is uniform throughout the map extent. |
• Enlargement/reduction does not change the contents of the photographs and can easily be carried out. |
• Enlargement/reduction of the maps involves redrawing it afresh. |
• Aerial photography holds good for inaccessible and inhospitable areas. |
• The mapping of inaccessible and inhospitable areas is very difficult and sometimes it becomes impossible. |
1. Vertical photographs
2. Low oblique
3. High oblique.