Building texture extracting apparatus and method thereof

摘要

A building texture extracting apparatus and a method thereof are provided, wherein the building texture extracting apparatus comprises a storage unit and a processor. The storage unit is configured to store an aerial image and a panoramic image of a building. There is a coordinate correlation between the aerial image and the panoramic image. The processor defines an edge segment of a building in the aerial image, calculates an edge function according to the edge segment, projects the edge function onto the panoramic image according to the coordinate correlation to derive an edge curve function, decides an edge curve segment according to the edge curve function, captures an image area under the edge curve segment to be a building texture of the building, and stores the building texture in the storage unit.

主权项

1. A building texture extracting apparatus, comprising:
a non-transitory storage unit, being configured to store an aerial image and a panoramic image of a building, there being a coordinate correlation between the aerial image and the panoramic image; and a processor, being electrically connected to the non-transitory storage unit and configured to perform the following operations: defining an edge line segment of the building in the aerial image, the edge line segment having a starting point of three-dimensional coordinates and an end point of three-dimensional coordinates, defining a vector according to the starting point and the end point, calculating an edge line function corresponding to the edge line segment according to the vector, calculating an edge curve function by projecting the edge line function onto the panoramic image according to the coordinate correlation, defining an edge curve segment of the building in the panoramic image according to the edge curve function, capturing a sub-image of the panoramic image to be a building texture of the building, the sub-image being under the edge curve segment, and storing the building texture in the non-transitory storage unit.