Multifactor eye position identification in a display system

• US 9,473,767 B1
• Filed: 03/31/2015
• Issued: 10/18/2016
• Est. Priority Date: 03/31/2015
• Status: Active Grant

• Current Assignee: CAE Incorporated
• Original Assignee: CAE Incorporated
• Inventors: Maz, Emmanuel
• Primary Examiner(s): PRINCE, JESSICA MARIE
• Application Number:
  US14/674,636
• Publication Number:
  US 20160295204A1
• Time in Patent Office: 567 Days
• Field of Search: 348/51
• US Class Current: 1/1
• CPC Class Codes: G09B 9/08 for teaching control of aircraft, e.g. Link trainer
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/275 from 3D object models, e.g. computer-generated stereoscopic image signals
• CPC Class Codes: H04N 13/30 Image reproducers optical systems for producing stereoscopic or other three-dimensional effects G02B30/00
• CPC Class Codes: H04N 13/302 for viewing without the aid of special glasses, i.e. using autostereoscopic displays
• CPC Class Codes: H04N 13/368 for two or more viewers
• CPC Class Codes: H04N 13/373 for tracking forward-backward translational head movements, i.e. longitudinal movements
• CPC Class Codes: H04N 13/376 for tracking left-right translational head movements, i.e. lateral movements
• CPC Class Codes: H04N 13/378 for tracking rotational head movements around an axis perpendicular to the screen
• CPC Class Codes: H04N 13/38 for tracking vertical translational head movements
• CPC Class Codes: H04N 13/383 for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes
• CPC Class Codes: H04N 5/145 Movement estimation for video coding H04N19/51

Abstract

A display system comprising a display screen for displaying a stream of images, a viewer positioning module and an image generator module. The viewer positioning module is for determining a viewer'"'"'s sightline by defining a first factor of the sightline as a lateral position of a viewer'"'"'s body part located between the viewer'"'"'s chin and the viewer'"'"'s waistline, defining a second factor of the sightline as a depth position of the body part and computing the sightline based at least on the first factor and the second factor. The image generator module is for generating the stream of images considering the determined sightline. A method comprising defining the first factor, defining the second factor, computing the sightline based at least on the first factor and the second factor, generating the stream of images considering the determined sightline and displaying the stream of images on a first display screen.

Claims

1. A method for displaying a stream of stereoscopic images comprising:

defining a first factor of a viewer'"'"'s sightline as a lateral position in a display system of a viewer'"'"'s body part located between a viewer'"'"'s chin and a viewer'"'"'s waistline;

defining a second factor of the sightline as a depth position in the display system of the body part;

defining a third factor of the sightline as a viewer'"'"'s eye-level height and horizontal rotational attitude, wherein the viewer'"'"'s eye-level height is calculated by applying a translation value to the position of the body part;

computing the sightline based at least on the first factor, the second factor and the third factor;

generating the stream of stereoscopic images, comprising a first stream of images and a second stream of images, considering the determined sightline; and

displaying the stream of stereoscopic images on a first display screen.

2. The method of claim 1, wherein computing the sightline comprises:

dynamically determining the lateral position of the body part corresponding to the first factor and combining the lateral position with a static viewer'"'"'s expected depth position of the viewer in the display system corresponding to the second factor.

3. The method of claim 1, further comprising, once the body part is determined to be moving, defining at least one of the first factor and the second factor of the sightline further using a predictive relative position factor of the body part.

4. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

image recognition matching an expected outfit with a viewer'"'"'s actual outfit.

5. The method of claim 1, further comprising:

loading a simulation model from at least one simulation database for generating the stream of images;

providing at least one physical interface element to the viewer of the display system; and

managing a computer simulation in the display system by computing the simulation model from inputs obtained from the at least one physical interface element and a plurality of simulation parameters of the computer simulation.

6. The method of claim 1, computing the sightline comprises:

dynamically determining the lateral position of the body part corresponding to the first factor and the depth position of the body part corresponding to the second factor in the display system.

7. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

determining a reflector position of an infra-red or near-infra-red reflector on the body part.

8. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

determining a tracker position of a magnetic tracker on the body part.

9. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

using ultrasonic reflections.

10. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

determining a wearable device position of a wearable element of the display system worn on the body part.

11. The method of claim 1, wherein at least one of the first factor and second factor for the position of the viewer'"'"'s body part is defined by:

determining a relative position between a seat of the display system and the body part.

12. The method of claim 11, wherein the seat provides an array of position detector for determining the relative position.