Saturday, 24 October 2015
Tuesday, 20 October 2015
Tuesday, 13 October 2015
Extrude image to 2D vector, 2.5D and 3D layers on the map" describes the OpenWebGIS function called "Extrude Image". How can this function be used in addition to what was described in the article? For example, you can put your photo on the map and see how it would look like if it is extruded (that means to calculate the height of each pixel depending on its luminance). It can be fun.
And let`s put on a map the famous painting titled Mona Lisa. It is a half-length portrait of a woman by the Italian artist Leonardo da Vinci, which has been acclaimed as «the best known, the most visited, the most written about, the most sung about, the most parodied work of art in the world». Take a photo of the painting from Wikipedia and save on your hard disk- see Figure 1.
Wednesday, 7 October 2015
In OpenWebGIS a new function has been created to manipulate images.
With the help of this function, you can calculate and get the height (height and altitude) of each pixel of your image. The calculation is performed based on the luminance (brightness) of the pixel. These estimates are used for the creation of:
- Vector layer (consisting of squares the number of which is equal or less than a number of pixels - it all depends on the settings you specify);