In this mode you choose geophotos of the object, the sizes of which you are interested in, and set markers on geophotos so that markers with the same number on different photos correspond one and the same point of the object of the real world. When at least two photos are completely marked, the application will calculate the distance between the markers, the distance up to the first marker as well as the distance up to the second marker. You can see the results of calculations as well as its accuracy level at the top of the screen (green colour stands for high accuracy level result, yellow colour stands for medium accuracy level result and red colour stands for low accuracy level result).

The following button is used to switch between the view geophoto and the mark geophoto modes.

In the mark geophoto mode you can control markers: create, delete and change their location. It is very easy to add a marker to the photo – you should simply touch the free space of the screen and as a result the marker will appear at this very point. In order to move a marker to another point you should select it by touch and then set a new location on the screen. But it is a rather crude way, that is why we have already added joystick: just use arrows for precise marker positioning.

You can save a markered geophoto and calculated distance between points as JPEG file by choosing "Export" in the menu. All exported images are located in /geomark/export directory on the external storage card. You can upload your measurements to Flickr, Panoramio and other web-services!