A method for image georegistration, the method comprising the procedures of: acquiring a single sensor-image of a scene with one imaging sensor of a user device, the sensor-image comprising detailed textural image content; obtaining imaging parameters of the acquired sensor-image, by a processor of said user device, said imaging parameters comprising at least the detected three-dimensional position and orientation of said imaging sensor when acquiring said sensor-image, as detected using at least one location measurement unit (116, 118) of said user device; generating, using the imaging parameters of the acquired sensor-image, by said processor one model-image of said scene from a textured 3D geographic model communicatively coupled with said user device, said 3D model providing different views of geographical features and terrain including aerial views and street-level views, said model-image representing a two-dimensional image of said scene as would be acquired in said 3D geographic model by a hypothetical image sensor using said imaging parameters comprising the detected geolocation of the imaging sensor when acquiring the sensor-image, wherein the detected geolocation of the imaging sensor corresponds to any position and orientation in the 3D model such that the generated model-image represents any point of view of the geographical features and terrain, including a street level view, said model-image comprising detailed textural image content besides edge features; comparing by said processor the detailed textured image content of said sensor-image with the detailed textured image content of said model-image and determining discrepancies therebetween; determining by said processor an updated 3D position and orientation of said imaging sensor in accordance with the discrepancies between said sensor-image and said model-image; and displaying supplementary content overlaid on said sensor-image, with a display of said user device, in relation to a selected location on said sensor-image, as determined based on said updated 3D position and orientation of said imaging sensor. acquiring a single sensor-image of a scene with one imaging sensor of a user device, the sensor-image comprising detailed textural image content; obtaining imaging parameters of the acquired sensor-image, by a processor of said user device, said imaging parameters comprising at least the detected three-dimensional position and orientation of said imaging sensor when acquiring said sensor-image, as detected using at least one location measurement unit (116, 118) of said user device; generating, using the imaging parameters of the acquired sensor-image, by said processor one model-image of said scene from a textured 3D geographic model communicatively coupled with said user device, said 3D model providing different views of geographical features and terrain including aerial views and street-level views, said model-image representing a two-dimensional image of said scene as would be acquired in said 3D geographic model by a hypothetical image sensor using said imaging parameters comprising the detected geolocation of the imaging sensor when acquiring the sensor-image, wherein the detected geolocation of the imaging sensor corresponds to any position and orientation in the 3D model such that the generated model-image represents any point of view of the geographical features and terrain, including a street level view, said model-image comprising detailed textural image content besides edge features; comparing by said processor the detailed textured image content of said sensor-image with the detailed textured image content of said model-image and determining discrepancies therebetween; determining by said processor an updated 3D position and orientation of said imaging sensor in accordance with the discrepancies between said sensor-image and said model-image; and displaying supplementary content overlaid on said sensor-image, with a display of said user device, in relation to a selected location on said sensor-image, as determined based on said updated 3D position and orientation of said imaging sensor.