Patent ID: 11922620
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  B  H  Y | IPC B  G

Claim 0:
1. A system for generating a stitched orthomosaic with decreased geometric distortion, comprising:
a processing environment having at least one processor and storage that is accessible to the at least one processor; and
a base set of images obtained from a survey mission and stored in the storage, wherein each image has georeferenced metadata associated with it and each image has an image center,
wherein the storage has instructions stored therein that, when executed by the at least one processor, causes the system to
(a) for each image, identify a set of neighbor images from the base set, wherein an image is considered a neighbor with another image only if a sufficient number of inliers exists between the images, wherein the inliers are defined as matching data points in relevant overlapping regions of the images,
(b) select one of the base set of images as a root image,
(c) determine, by the at least one processor, homographies in relation to the root image for each of the remaining images, wherein the homographies are based on finding homography transformations for each image in a set of images by using a homography matrix calculation,
(d) determine, by the at least one processor, dimensions for an orthomosaic of the base set of images using the homographies,
(e) determine, by the at least one processor, an overlapping set of images for each orthomosaic pixel,
(f) determine, by the at least one processor, a set of potential pixels and potential pixel values for each orthomosaic pixel, wherein the set of potential pixels is the set of corresponding image pixels in the overlapping set of images for the orthomosaic pixel,
(g) determine, by the at least one processor, a distance value for each potential pixel, wherein the distance value is determined based on linear distance between the potential pixel and image center,
(h) determine, by the at least one processor, a minimum distance pixel in each set of potential pixels by identifying the potential pixel of the set having the smallest distance, and
(i) populate, by the at least one processor, each orthomosaic pixel with the pixel value of the minimum distance pixel determined for the set of potential pixels associated with each orthomosaic pixel.