David D Woods

US Patent:

20220256137, Aug 11, 2022

Filed:

Apr 26, 2022

Appl. No.:

17/729910

Inventors:

David P. Woods - Alexandria VA, US

International Classification:

H04N 13/334
H04N 13/117
H04N 13/341
H04N 13/376
H04N 13/378
H04N 13/337

Abstract:

Embodiments employ one or more ellipses to determine distance and location in relation to a camera. The captured images of ellipses are analyzed to determine the size of the major axes of the ellipses in the captured image. From the size of the major axis, using mathematics, the distance from the camera can be computed. This distance from the camera combined with the location of the center of the ellipse in the captured image may then be used to locate the ellipse in X-Y-Z space. The ellipses may be placed on articles attached to the body or head of a person, such as a hat or glasses.

US Patent:

20200267379, Aug 20, 2020

Filed:

May 4, 2020

Appl. No.:

16/865623

Inventors:

David Woods - Alexandria VA, US

International Classification:

H04N 13/334
H04N 13/337
H04N 13/378
H04N 13/376
H04N 13/341
H04N 13/117

Abstract:

Embodiments allow one or more viewers of a display to see images. The images viewed by the glasses may be based on the orientation of the glasses, so that the images correspond to the user's viewpoint. Different images may be presented to left and right eyes for 3D stereoscopic viewing. The position and orientation of the glasses may be tracked by analyzing images from one or more cameras observing the glasses. Glasses may have distinct geometric shapes or features, such as circular lenses, rims, regions around the lenses, patterns, or patterns of recognizable blobs, to facilitate tracking. One or more regions of the glasses may be illuminated by self-contained or reflected light, to facilitate tracking under various ambient lighting conditions. The lenses of the glasses may have selective barriers such as anaglyph filters, polarizing filters, and shutters, to select images from the display. Glasses may also be used as pointing devices to select and manipulate 3D objects.

US Patent:

20180278921, Sep 27, 2018

Filed:

May 29, 2018

Appl. No.:

15/992062

Inventors:

- Burke VA, US
David Paul WOODS - Burke VA, US

Assignee:

3DI LLC - Burke VA

International Classification:

H04N 13/334
H04N 13/117
H04N 13/341
H04N 13/378
H04N 13/376

Abstract:

Embodiments allow different viewers of a shared display to see different images. Images may have different combinations of polarization and time slices that correspond to filters in glasses worn by the viewers. The images viewed by each of the glasses may be based on the tracked position and orientation of the glasses, so that the images correspond to the user's viewpoint. Different images may be presented to left and right eyes for 3D stereoscopic viewing. The lenses of the glasses may have a filter that selects light of a specific polarization combined with a shutter that passes images during a specific time slice. The polarization filter may select circularly polarized images of a desired orientation and emit linearly polarized images. The shutter may use liquid crystals to twist the linearly polarized images during the desired time slice so that a final linear polarizer passes the image to the viewer.

US Patent:

20180213213, Jul 26, 2018

Filed:

Jan 30, 2018

Appl. No.:

15/883277

Inventors:

- Alexandria VA, US
David Paul WOODS - Burke VA, US

Assignee:

3DI LLC - Alexandria VA

International Classification:

H04N 13/00

Abstract:

A stereoscopic display method or system includes an image display panel, object tracking sensors, and a means to create first or left, and second or right stereoscopic images based upon viewpoint location. This allows the user to perceive the viewed 3D stereoscopic image as approximately fixed in space. A first embodiment employs differently filtered colored, stereoscopic images. The first and second differently filtered colored images may be perceived as a 3D stereoscopic image by applying anaglyph glasses. In a second embodiment the method of passively polarized glasses may be applied with the result being a stereoscopic image whose location is approximately fixed in space. A third embodiment employs passively polarized anaglyph glasses. This provides the advantage of allowing two different viewers to see different virtual 3D stereoscopic images whose location remains approximately fixed in space. By employing tracking sensors, user gesturing or pointing may now allow interaction with the virtual 3D stereoscopic images in much the same way 2D objects are manipulated by employing a touch screen. This may be combined with voice commands. This allows for input systems such as virtual 3D touch panels, keyboards and remote controllers. In addition virtual 3D objects may be pushed, pulled rotated or manipulated in almost any way a real 3D object would be. The methods described may be applied in other ways, including, but not limited to gaming systems, 3D virtual caves, and simulators. It may also be used wired or wirelessly to remotely control or interact with other devices.

US Patent:

20170280134, Sep 28, 2017

Filed:

Mar 16, 2017

Appl. No.:

15/461391

Inventors:

- Burke VA, US
David WOODS - Burke VA, US

Assignee:

3DI LLC - Burke VA

International Classification:

H04N 13/04
H04N 13/02
G02B 27/00
G06T 7/73
G02B 27/22
G02B 27/26

Abstract:

Embodiments present different images to multiple viewers of a shared display using glasses with lenses that transmit only selected images from the display. The images viewed by each of the glasses may be based on the tracked position and orientation of the glasses, so that the images correspond to the user's viewpoint. Different images may also be presented to left and right eyes for D stereoscopic viewing. The position and orientation of the lenses of the glasses may be tracked by analyzing images from one or more cameras observing the glasses. Glasses may have distinctive geometric shapes or features, such as circular lenses or rims, or recognizable blobs or patterns, to facilitate tracking. The lenses of the glasses may combine multiple barriers such as anaglyph filters, polarizing filters, and shutters, to select images from the display. Glasses may also be used as pointing devices to select and manipulate D objects.

US Patent:

20150124063, May 7, 2015

Filed:

Dec 15, 2013

Appl. No.:

14/106766

Inventors:

David Woods - Burke VA, US

International Classification:

H04N 13/04

US Classification:

348 56

Abstract:

A stereoscopic display system includes an image display panel, viewpoint position sensors, and a means to create first or left and second or right stereoscopic images corrected for parallax. This allows for multiple viewpoints to perceive the viewed 3D stereoscopic image as approximately fixed in space. In one embodiment, the first and second images may be perceived as a 3D stereoscopic image by applying shutter glasses. In another embodiment, the first and second images may be perceived as a 3D auto stereoscopic image by applying configurable louvers or light guiding layers. In this embodiment, the display system utilizes information from the position sensors to optimize electronically configurable louvers. This allows for large displays to be seen from multiple viewpoints.The virtual 3D stereoscopic object images, being virtually fixed in space may be interacted with by the user or users in much the same way 2D objects are manipulated by applying a touch screen. This allows for input systems such as virtual keyboards and remote controllers. The methods described may be applied in other ways, including, but not limited to gaming systems, 3D virtual caves, and simulators.

US Patent:

20150124065, May 7, 2015

Filed:

Nov 19, 2014

Appl. No.:

14/547555

Inventors:

David Paul Woods - Burke VA, US

International Classification:

H04N 13/04

US Classification:

348 60

Abstract:

A stereoscopic display method or system includes an image display panel, object tracking sensors, and a means to create first or left, and second or right stereoscopic images based upon viewpoint location. This allows the user to perceive the viewed 3D stereoscopic image as approximately fixed in space.A first embodiment employs differently filtered colored, stereoscopic images. The first and second differently filtered colored images may be perceived as a 3D stereoscopic image by applying anaglyph glasses.In a second embodiment the method of passively polarized glasses may be applied with the result being a stereoscopic image whose location is approximately fixed in space.A third embodiment employs passively polarized anaglyph glasses. This provides the advantage of allowing two different viewers to see different virtual 3D stereoscopic images whose location remains approximately fixed in space.By employing tracking sensors, user gesturing or pointing may now allow interaction with the virtual 3D stereoscopic images in much the same way 2D objects are manipulated by employing a touch screen. This may be combined with voice commands. This allows for input systems such as virtual 3D touch panels, keyboards and remote controllers. In addition virtual 3D objects may be pushed, pulled rotated or manipulated in almost any way a real 3D object would be.The methods described may be applied in other ways, including, but not limited to gaming systems, 3D virtual caves, and simulators. It may also be used wired or wirelessly to remotely control or interact with other devices.

US Patent:

20140104269, Apr 17, 2014

Filed:

Feb 27, 2013

Appl. No.:

13/778888

Inventors:

David Paul Woods - Burke VA, US

International Classification:

G06T 15/00

US Classification:

345419

Abstract:

A stereoscopic display system includes an image display panel, a means to polarize light so as to present two patterns of images whose polarization direction differ by approximately 90 degrees, and a means to change the relationship of image to polarization direction pattern. The images may be perceived as a stereoscopic image by viewing them through glasses having polarizing directions which differ by approximately 90 degrees. The display device may be rotated approximately 90 degrees from a first orientation into a second orientation, and the device is able to change left and right image patterns, polarization patterns, or any combination of the two so it may be viewed as a stereoscopic image using glasses whose left and right lenses are of same polarization direction as the glasses needed for the first orientation.