Method for multiple projector display using a GPU frame buffer

Patent metadata

Field	Value
Publication number	US-9035969-B2
Application number	US-201213688285-A
Country	US
Kind code	B2
Filing date	Nov 29, 2012
Priority date	Nov 29, 2012
Publication date	May 19, 2015
Grant date	May 19, 2015

Abstract

A primary image is transformed into secondary images for projection, via first and second frame buffers and view projection matrixes. To do so, a first image is loaded into the first frame buffer. A calibration data set, including the view projection matrixes, is loaded into an application. The matrixes are operable to divide and transform a primary image into secondary images that can be projected in an overlapping manner onto a projection screen, providing a corrected reconstruction of the primary image. The first image is rendered from the first frame buffer into the second images, by using the application to apply the calibration data set. The second images are loaded into a second frame buffer, which can be coupled to the video projectors.

First claim

What is claimed is:

1. A method of interfacing a host computing device with a video card for preparing an image for projection, the method comprising:
using the host computing device to send a first image to the video card;
having the video card process the received first image through a native graphics pipeline and storing the resultant processed first image into a private render buffer hosted by the video card, said resultant processed first image being the video card's final…

Assignees

• Seiko Epson Corp

Inventors

• Ivashin Victor
• Nelson Steve

Classifications

• H04N9/3185

  Electricity · mapped topic

• G06T3/0025 Primary

  Physics · mapped topic

• G09G5/12

  Physics · mapped topic

• G06T3/4038

  Physics · mapped topic

• H04N9/3182

  Electricity · mapped topic