Document Type : Research Paper

Author

• Mahdi Modiri

Associate Professor of Urban planning, Malek-Ashtar University of Technolog

Abstract

One of the major steps in surveying is the activity called the "classification operation". An operation that, while clarifying aerial photographs, collects the information of names. Classification operations have specific technical rules and regulations that the Geographic Organization has described in the publications of the same name, a brief account of which is presented here.
The classification of aerial photos includes the actions taken on the draft of the map before cartography operation, including some of the activities listed below:

- Identification and classification of the features of natural and artificial effects and displaying them by    conventional signs;
- Providing information and names.