Patent ID: 11880983
Assignee: LOGITECH EUROPE S.A.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 20:
21. A system for delivering presentation information on a surface to an electronic device, the system comprising:
a camera device; and
a controller comprising a processor and a non-transitory computer readable medium that includes instructions which when executed by the processor are configured to cause the system to:
capture, by the camera device, a first image of a surface, wherein the first image comprises presentation information that is disposed on at least a portion of the surface, and a portion of a presenter that is disposed between the camera device and the surface;
perform a presenter segmentation process, comprising:
detect the portion of the presenter in a second image that is derived from the first image; and
generate a presenter mask that is used to define pixels in the first image that are associated with the detected portion of the presenter;

perform a canvas reconstruction process, comprising:
replace the pixels in the first image that are associated with the detected portion of the presenter within the presenter mask to form a reconstructed canvas image;

perform a presentation information segmentation process, comprising:
detect presentation information in the reconstructed canvas image; and
generate a presentation information mask that includes pixels in the reconstructed canvas image that contain portions of the presentation information;

perform a background reconstruction process, comprising:
apply the generated presentation information mask to the reconstructed canvas image to determine the pixels that contain the portions of the presentation information; and
reconstruct the pixels in the reconstructed canvas image that contain the portion of the presentation information to form a canvas background image; and

perform a background bleaching process, comprising:
remove imperfections in the reconstructed canvas image by dividing the reconstructed canvas image by the canvas background image.