Method and apparatus for displaying video on 3d map

An apparatus for displaying a captured image onto a three-dimensional (3D) electronic map, comprising:

• a reference setting device configured to determine a position of a virtual photographing apparatus within the 3D electronic map corresponding to a position on which a real photographing apparatus is installed in a real world environment;
• an intersecting point extracting device configured to extract a nearest intersecting point which is positioned on each of a plurality of virtual view angle vectors each of which intersects one of a plurality polygons constituting the 3D electronic map in a region around the real photographing apparatus or the virtual photographing apparatus, wherein the plurality of virtual view angle vectors are generated based on view angle information of the virtual photographing apparatus and the position of the virtual photographing apparatus;
• a selecting device configured to select pixels that are within a range of coordinates of the extracted nearest intersecting points by comparing 3D coordinates of the extracted nearest intersecting points and 3D coordinates of a plurality of pixels constituting the plurality of polygons;
• a converting device configured to convert 3D coordinates of the selected pixels to two-dimensional (2D) coordinates of the selected pixels to display the selected pixels on a 2D display;
• an image superimposing device configured to superimpose an image captured by the real photographing apparatus on top of the selected pixels, wherein the superimposing device uses the converted 2D coordinates of the selected pixels;
• and
• an output device configured to output, in real-time, the 3D electronic map, including the superimposed image, on the 2D display.

A system for displaying a captured image onto a three-dimensional (3D) electronic map, comprising:

• a map server configured to store data of the 3D electronic map, wherein the 3D electronic map consists of a plurality of polygons;
• a real photographing apparatus configured to photograph a monitor area;
• and
• an image superimposing apparatus configured to superimpose an image captured by the real photographing apparatus with a position on the 3D electronic map,
• wherein the image superimposing apparatus comprises:
• a reference setting device configured to determine a position of a virtual photographing apparatus within the 3D electronic map corresponding to a position on which a real photographing apparatus is installed in a real world environment;
• an intersecting point extracting device configured to extract nearest intersecting points which are positioned on a plurality of virtual view angle vectors and each of which intersect the respective plurality of polygons, wherein the plurality of virtual view angle vectors are generated based on view angle information of the virtual photographing apparatus and the position of the virtual photographing apparatus;
• a selecting device configured to select pixels that are within a range of coordinates of the extracted nearest intersecting points by comparing 3D coordinates of the extracted nearest intersecting points and 3D coordinates of a plurality of pixels constituting the plurality of polygons;
• a converting device configured to convert 3D coordinates of the selected pixels to two-dimensional (2D) coordinates of the selected pixels to display the selected pixels on a 2D display;
• an image superimposing device configured to superimpose an image captured by the real photographing apparatus on top of the selected pixels, wherein the superimposing device uses the selected pixels and the converted 2D coordinates of the selected pixels;
• and
• an output device configured to output, in real-time, the 3D electronic map, including the superimposed image, on the 2D display.