Real time desktop image warping system

• US 8,085,216 B2
• Filed: 10/17/2007
• Issued: 12/27/2011
• Est. Priority Date: 10/17/2007
• Status: Active Grant

• Current Assignee: US of A As Represented By The Secretary of The Navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Miller, Stephen
• Primary Examiner(s): Wang, Andrew
• Assistant Examiner(s): Chu, David H
• Application Number:
  US11/873,559
• Publication Number:
  US 20090102862A1
• Time in Patent Office: 1,532 Days
• Field of Search: None
• US Class Current: 345/1.1
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G06T 5/80 Geometric correction
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2310/0232 Special driving of display border areas
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/12 Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
• CPC Class Codes: G09G 5/14 Display of multiple viewports

Abstract

The present invention relates to an image warping software algorithm for a real time alteration of a display scene running under the Microsoft Windows Operating System. The image warping software algorithm alters the display scene and allows an observer to view the display scene as a single unbroken image when the display scene is distributed across multiple display screens. The purpose of the image warping software algorithm is to significantly reduce the distortion observed at the abutting edges of the joined display screens.

Claims

1. A non-transitory computer readable medium having computer program code recorded thereon, wherein the program code includes sets of instructions comprising:

first computer instructions for generating a real time image warping system graphical user interface residing on a host computer;

second computer instructions for maintaining an input parameter memory within said host computer;

third computer instructions for accepting a plurality of input parameters generated by manipulating a plurality of software programmed interfaces maintained by and displayed on said real time image warping system graphical user interface wherein said plurality of input parameters are stored in said input parameter memory;

fourth computer instructions for communicating with a graphics development interface, where said graphics development interface is in communication with an operating system executing on said host computer;

fifth computer instructions for performing a screen capture from an image source wherein said screen capture contains a plurality of seams wherein each seam has a seam area set by a seam width parameter stored within said input parameter memory;

sixth computer instructions for slicing said seam area into a first slice, a second slice and a third slice according to a zoom width parameter stored within said input parameter memory;

seventh computer instructions for compressing said first slice and said third slice according to a compression coefficient resulting in a compressed first slice CS1 and a compressed third slice CS3;

eighth computer instructions for compressing said second slice resulting in a compressed second slice CS2 wherein said compressed second slice CS2 has a slice width according to the equation;

width of CS2=(seam width−

(width of CS1+width of CS3))/2;

ninth computer instructions for duplicating said compressed second slice resulting in an identical pair of compressed second slices;

tenth computer instructions for assembling a warped window consisting of said compressed first slice, said compressed third slice, said identical pair of compressed second slices where said first compressed slice and said third compressed slice maintain a position consistent with a pre-sliced position;

eleventh computer instruction for displaying said warped window over said image source in real time on a monitor connected to said host computer according to a series of commands from said real time image warping system graphical user interface acted upon by said graphical development interface executing on said host computer; and

twelfth computer instruction for routing said warped window to a plurality of display units to effectuate an alteration to a real time image source distributed across said plurality of display units wherein said alteration mitigates a distortion at the abutting edges of said plurality of display units induced by a lens system.

2. The non-transitory computer readable medium of claim 1 wherein said warped window displayed on said monitor is dynamically updated in real time to reflect a change to said input parameter memory.

3. The non-transitory computer readable medium of claim 1 wherein said seam has an orientation that includes a vertical seam and a horizontal seam.

4. The non-transitory computer readable medium of claim 1 wherein said compression coefficient is 0.75.

5. The non-transitory computer readable medium of claim 1 wherein said plurality of input parameters includes an eye height center, a barreling factor, a horizontal slice parameter and a pixel definition of said warp window boundaries.

6. The non-transitory computer readable medium of claim 1 wherein said image source includes a video stream, a static image, or a series of static images.

7. A non-transitory computer readable media having stored thereon a computer program that is executed by a digital computer for:

accepting a plurality of input parameters wherein said plurality of input parameters are accepted via a multi-level graphical user interface displayed on a monitor connected to said digital computer;

storing said plurality of input parameters in an internal parameter memory residing in said digital computer wherein said internal parameter memory is in communication a multi-level graphical user interface;

taking a screen shot by invoking an image processing software program integral to said host computer in communication with a graphical development interface that is integral to said host computer resulting in a statically formatted image;

extracting from said statically formatted image a seam area having a seam width determined by a seam width parameter;

processing said seam area wherein said processing includes digitally slicing said window area into three slices having a slice width dictated by a zoom width parameter,

compressing a leftmost slice according to a width compression factor and compressing a rightmost slice according to said width compression factor resulting in a compressed leftmost slice and a compressed rightmost slice;

compressing a remaining middle slice and then duplicating said remaining middle slice resulting in a pair of identical compressed middle slices wherein said pair of identical compressed middle slices fits into a middle portion of said seam area not occupied by said compressed leftmost slice and said compressed rightmost slice;

assembling said compressed leftmost slice, said pair of identical compressed middle slices, said rightmost slice into said seam area producing a warped window;

refining a shape of said warped window by changing said seam width parameter and said zoom width parameter by manipulating said multi-level graphical user interface resulting in a warped window that mitigates a distortion induced by a lens system; and

routing said warped window to a plurality of joined display screens wherein said joined display screens appear as a single screen due to said warped window'"'"'s mitigation of said distortion induced by a lens system.

8. The non-transitory computer readable media of claim 7 wherein said compression factor is 0.75.

9. The non-transitory computer readable media of claim 7 wherein said input parameters include an eye height center, a barreling factor, a horizontal slice parameter and a pixel definition of said warp window boundaries.

10. The non-transitory computer readable media of claim 7 wherein said multi-level graphical user interface monitors in real time a plurality of user commands to control said extracting, said processing and said compressing operations.

11. The non-transitory computer readable media of claim 7 wherein said screen shot is taken from a plurality of image formats including a video stream, a static image, or a series of static images.

12. The non-transitory computer readable media of claim 7 wherein said seam width is oriented vertically.

13. The non-transitory computer readable media of claim 7 wherein said seam width is oriented horizontally.