Horizontal perspective display

• US 20050219694A1
• Filed: 04/04/2005
• Published: 10/06/2005
• Est. Priority Date: 04/05/2004
• Status: Abandoned Application

• Current Assignee: zSpace Inc.
• Original Assignee: zSpace Inc.
• Inventors: Vesely, Michael A., Clemens, Nancy
• Application Number:
  US11/098,681
• Publication Number:
  US 20050219694A1
• Time in Patent Office: Days
• US Class Current: 359/463
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 30/34 Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
• CPC Class Codes: G02B 30/40 giving the observer of a single two-dimensional [2D] image a perception of depth
• CPC Class Codes: G06F 3/04815 Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
• CPC Class Codes: H04N 13/122 Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues H04N13/128 takes precedence
• CPC Class Codes: H04N 13/279 the virtual viewpoint locations being selected by the viewers or determined by tracking

Abstract

The personal computer is perfectly suitable for horizontal perspective display, designed for the operation of one person, and well capable of rendering various horizontal perspective images to the viewer. Thus the present invention discloses a real time electronic display that can adjust the horizontal perspective images to accommodate the position of the viewer. By changing the displayed images to keep the eyepoint point of the horizontal perspective image in the same position as the viewer'"'"'s eye point, the viewer'"'"'s eye is always positioned at the proper viewing position to perceive the three dimensional illusion, thus minimizing viewer'"'"'s discomfort and distortion. The display can accept manual input such as a computer mouse, trackball, joystick, tablet, etc. to re-position the horizontal perspective images. The display can also automatically re-position the images based on an input device automatically providing the viewer'"'"'s viewpoint location.

Claims

1. A horizontal perspective display system comprising

a real time display to display horizontal perspective images according to a predetermined projection eyepoint;

and

an eyepoint input device for accepting an input eyepoint location wherein the displayed images can be adjusted using the input eyepoint as the projection eyepoint.

2. A display system as in claim 1 wherein the eyepoint input device is a manual input device whereby the eyepoint input location is manually entered.

3. A display system as in claim 1 wherein the eyepoint input device is an automatic input device whereby the automatic input device automatically extracts the eyepoint location from the viewer.

4. A horizontal perspective display system comprising

a real time display to display horizontal perspective images according to a predetermined projection eyepoint;

an eyepoint input device for accepting an input eyepoint location; and

a computer system for receiving the input eyepoint location from the eyepoint input device, calculating the horizontal perspective projection images according to the input eyepoint location, and outputting the images to the display;

whereby the displayed images is real time adjusted using the input eyepoint as the projection eyepoint.

5. A display system as in claim 4 wherein the horizontal perspective image is calculated from a flat two dimensional picture.

6. A display system as in claim 4 wherein the horizontal perspective image is calculated from a three dimensional model.

7. A display system as in claim 4 wherein the eyepoint input device is a manual input device whereby the eyepoint input location is manually entered.

8. A display system as in claim 7 wherein the manual input device is a computer peripheral or a wireless computer peripheral.

9. A display system as in claim 7 wherein the manual input device is selected from a group consisted of a keyboard, a stylus, a keypad, a computer mouse, a computer trackball, a tablet, a pointing device.

10. A display system as in claim 4 wherein the eyepoint input device is an automatic input device whereby the automatic input device automatically extracts the eyepoint location from the viewer.

11. A display system as in claim 10 wherein the automatic input device is selected from a group consisted of radio-frequency tracking device, infrared tracking device, camera tracking device.

12. A display system as in claim 10 wherein the angle between the projection eyepoint and the display surface is between 35 and 55 degree.

13. A display system as in claim 4 wherein the display screen is a CRT display, a LCD display or a projector display.

14. A display system as in claim 4 wherein the display surface is substantially horizontal.

15. A display system as in claim 4 wherein the horizontal perspective image is stereoscopic images.

16. A display system as in claim 4 wherein the displayed image is continuously updated to form motion images.

17. A horizontal perspective display system comprising

a real time display to display horizontal perspective images according to a predetermined projection eyepoint;

an eyepoint input device for accepting an input eyepoint location;

an image input device for accepting an image command;

a computer system

for accepting an input eyepoint location from the eyepoint input device; and

for accepting an image command from the image input device, calculating a horizontal perspective projection image according to the image command using the input eyepoint location as the projection eyepoint; and

for outputting the image to the display.

18. A display system as in claim 17 wherein the image command includes image magnification, image movement, image rotation command and command to display another predetermined image.

19. A display system as in claim 17 wherein the eyepoint input device is a manual input device whereby the eyepoint input location is manually entered.

20. A display system as in claim 17 wherein the eyepoint input device is an automatic input device whereby the automatic input device automatically extracts the eyepoint location from the viewer.