Feature reduction based on local densities for bundle adjustment of images

摘要

Methods, systems, and computer program products are provided for determining camera parameters and three dimensional locations of features from a plurality of images of a geographic area. These include, detecting features in the plurality of images where each of the images cover at least a portion of the geographic area, comparing the detected features between respective ones of the images to determine a plurality of matched features, selecting a subset of the plurality of matched features, and determining the camera parameters and the three dimensional positions of one or more of the detected features using the selected subset. The respective matched features are selected depending on a quantity of other matched features in proximity to the respective matched features.

主权项

1. A method of determining camera parameters and three dimensional locations of features from a plurality of images of a geographic area, comprising:
detecting features in the plurality of images, wherein each of the images cover at least a portion of the geographic area; comparing the detected features between respective ones of the images to determine a plurality of matched features; selecting a subset of the plurality of matched features, respective matched features selected depending on a quantity of other matched features in proximity to the respective matched features; and determining the camera parameters and the three dimensional positions of one or more of the matched features using the selected subset.