Patent ID: 11887289
Assignee: nan
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. A method of generating an image occlusion key, comprising:
obtaining a target image of an event venue using a digital camera, said target image having a target location suitable for placing a virtual augmentation;
obtaining a stream of current images from said event venue;
creating a stationary-stream of said current images, said stationary-stream of images having each of said stream of current images transformed to match camera-pose attributes of said target image such that each pixel representing said target location occurs at the same x, y location in each of said stationary stream of images;
creating a segmented image stream from said stationary stream, wherein, each image of said segmented image stream is segmented into foreground and background pixels;
combining said background pixels of said segmented image stream to obtain a background pixel map of said target location said background pixel map having, for each pixel of said target region, a history of color values labeled as being one of said background pixels, and further associating each pixel within said target location with color values of all pixels designated as background pixels at that pixel location in each image of said segmented image stream, and, wherein all pixels in said target location of one of said current images that have color values within a predetermined range of the smallest enclosing sphere of the color values of pixel values associated with the corresponding pixel from the background pixel map are assigned an alpha value in a range of 1 to 254 proportional to their distance from the smallest enclosing sphere; and,
using said background pixel map to obtain said image occlusion key for one of said current images.