The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A digital camera is utilized to shoot and monitor the surface based on the principle of photogrammetry so as to obtain spatial data quickly, make large scale maps, establish of three dimension ground model according to the digital measurement system, detect surface and abandoned slope changes underground and test the reasonableness of blasting hole position.
This paper utilizes photographic surveying principle and uses digital camera to shoot and monitor the mine surface, and quickly collect mine spatial data. Based on the data, a 3D model of mine surface is built. The large scale maps of mine are made. Based on coordinates and 3D model in the period of different time, changes of mine surface are get obtained. The 3D model can help to get the shape of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.