System and method for creating a navigable, three-dimensional virtual reality environment having ultra-wide field of view

• US 9,883,174 B2
• Filed: 04/13/2015
• Issued: 01/30/2018
• Est. Priority Date: 05/27/2011
• Status: Active Grant

• Current Assignee: Sharevr Hawaii, LLC
• Original Assignee: Thomas Seidl
• Inventors: Seidl, Thomas, Igra, Ron
• Primary Examiner(s): VO, TUNG T
• Application Number:
  US14/685,234
• Publication Number:
  US 20150264340A1
• Time in Patent Office: 1,023 Days
• Field of Search: 348 36- 42
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06T 15/10 Geometric effects
• CPC Class Codes: G06T 2215/08 Gnomonic or central projection
• CPC Class Codes: H04N 13/117 the virtual viewpoint locations being selected by the viewers or determined by viewer tracking
• CPC Class Codes: H04N 13/239 using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence
• CPC Class Codes: H04N 13/243 using three or more 2D image sensors
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays
• CPC Class Codes: H04N 13/383 for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes

Abstract

The present invention relates to a system and method for capturing video of a real-world scene over a field of view that may exceed the field of view of a user, manipulating the captured video, and then stereoscopically displaying the manipulated image to the user in a head mounted display to create a virtual environment having length, width, and depth in the image. By capturing and manipulating video for a field of view that exceeds the field of view of the user, the system and method can quickly respond to movement by the user to update the display allowing the user to look and pan around, i.e., navigate, inside the three-dimensional virtual environment.

Claims

1. A system for creating a navigable, panoramic three-dimensional virtual reality environment with stereoscopic perception of three-dimensional depth to a user, comprising:

a first pair of optical elements facing in a same first direction with their respective optical axes disposed parallel to one another, each optical element having a field of view of at least 80 degrees;

a second pair of optical elements facing in a same second direction different from the first direction with their respective optical axes disposed parallel to one another, each optical element having a field of view of at least 80 degrees;

a position detector configured to determine a direction of view of the user;

an image renderer disposed in communication with the optical elements to receive from each of the first and second pairs of optical elements, respectively, first and second video image streams of image frames, the image renderer disposed in communication with the position detector to receive the direction of view and configured to create an output stream of merged stereo image frames corresponding to the direction of view of the user, the merged frames comprising image frames from the first video streams which are temporally matched to respective image frames from the second video streams; and

a head mounted display disposed in communication with the image renderer to receive the output stream and configured to display the output stream to the user, whereby a navigable, panoramic three-dimensional virtual reality environment having stereoscopic perception of three-dimensional depth is created.

2. The system according to claim 1, wherein the first and second pairs of optical elements are configured to image two different viewpoints of a scene.

3. The system according to claim 1, wherein the image renderer is configured to split the merged frames of the output stream and transform each of the split frames onto respective first and second models.

4. The system according to claim 3, wherein the center of origin of each model is selected to correspond to a location within the head mounted display at which a respective one of the user'"'"'s eyes is to be positioned.

5. The system according to claim 3, wherein the model comprises a wireframe model.

6. The system according to claim 3, wherein the model comprises a sphere.

7. The system according to claim 1, wherein the renderer comprises a non-transitory computer usable medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method for rendering the first and second video image streams to create a panoramic three-dimensional virtual reality environment having stereoscopic perception of three-dimensional depth comprising the steps of creating first and second wireframe models, and transforming each of the first and second video images by wrapping the first and second video streams of the first pair of optical elements onto the first and second wireframe models respectively.

13. The system according to claim 1, wherein the field of view of each optical element of the first and second pairs is at least 100 degrees.

14. The system according to claim 1, wherein the field of view of each optical element of the first and second pairs is at least 120 degrees.

15. The system according to claim 1, wherein the field of view of each optical element of the first and second pairs is at least 150 degrees.

16. The system according to claim 1, wherein the field of view of each optical element of the first pair is at least 170 degrees.

17. The system according to claim 16, wherein the field of view of each optical element of the second pair is at least 170 degrees.

18. The system according to claim 1, wherein the field of view of each optical element of the first pair is at least 183 degrees.

19. The system according to claim 18, wherein the field of view of each optical element of the additional second pair is at least 183 degrees.

20. The system according to claim 1, wherein the field of view of each optical element of the first pair is at least 210 degrees.

21. The system according to claim 20, wherein the field of view of each optical element of the second pair is at least 130 degrees.

22. The system according to claim 1, wherein the first and second directions are parallel to one another and the first and second pairs of optical elements point in opposite directions.

23. The system according to claim 1, wherein the system includes no more than two pairs of optical elements.

8. A method for rendering video image streams to create a navigable, panoramic three-dimensional virtual reality environment having stereoscopic perception of three-dimensional depth comprising the steps of:

providing a first pair of optical elements facing in a same first direction with their respective optical axes disposed parallel to one another, each optical element having a field of view of at least 80 degrees;

providing a second pair of optical elements facing in a same second direction different from the first direction with their respective optical axes disposed parallel to one another, each optical element having a field of view of at least 80 degrees;

receiving video image streams of a scene comprising first and second video image streams taken from each of the first and second pairs of optical elements, respectively, the first video image streams having a plurality of first image frames and the second video image streams having a plurality of second image frames;

merging respective pairs of the first and second image frames in stereo format to create a video output stream of merged stereoscopic image pairs;

receiving position data indicating a direction of sight of a user;

calculating a first and second region of interest of the merged stereoscopic image pairs based on the position data; and

displaying the first and second regions of interest on a head mounted stereoscopic display,

whereby a navigable, panoramic three-dimensional virtual reality environment having stereoscopic perception of three-dimensional depth is created.

9. A method according to claim 8, comprising creating first and second wireframe models, and wrapping the respective first and second regions of interest onto the first and second wireframe models respectively.

10. A method according to claim 9, wherein the step of displaying the first and second regions of interest comprises rotating the first and second wireframe models in response to the position data.

11. A method according to claim 8, comprising removing distortion from the first and second image frames.

12. A method according to claim 8, wherein the step of merging the respective pairs of the first and second image frames comprises temporally synchronizing the first and second image frames.

24. The method according to claim 8, wherein the first and second directions are parallel to one another and the first and second pairs of optical elements point in opposite directions.

25. The method according to claim 8, wherein the steps of providing first and second pairs of optical elements comprises providing no more than two pairs of optical elements.