1. A method for automatic source image selection for generation of a composite orthomosaic image from a plurality of geospatial source images, comprising: accessing a plurality of geospatial source images corresponding to an area of interest; comparing the plurality of geospatial source images to a base layer image, wherein each of the plurality of geospatial source images are compared to a corresponding portion of the base layer image that is geographically concurrent with a respective one of the plurality of geospatial source images; and selecting at least one of the plurality of geospatial source images for use in the orthomosaic image based on the comparing.