Method and apparatus for adjusting an image to compensate for an offset position of a user

• US 20020180733A1
• Filed: 05/15/2001
• Published: 12/05/2002
• Est. Priority Date: 05/15/2001
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Trajkovic, Miroslav, Gutta, Srinivas, Pelletier, Daniel, Colmenarez, Antonio J.
• Application Number:
  US09/858,211
• Publication Number:
  US 20020180733A1
• Time in Patent Office: Days
• US Class Current: 345/427
• 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 3/00 Geometric image transformations in the plane of the image

Abstract

A method and apparatus are disclosed for monitoring the location of one or more viewer(s) and dynamically adjusting the image to compensate for the current location of the viewer(s). The image is adjusted to compensate for a viewing location (pan angle, Θ, tilt angle, Φ, or distance, d) outside of a specified range of values. The input image is adjusted so that the output image appears as originally intended, for the current viewing location of the viewer. A linear transformation technique is applied to the original image to generate a modified image. The linear transformation maps the pixels in the original image to a new space that distorts the image, such that when the modified image is viewed from an offset viewing location the image appears as if being viewed from a direct viewing location.

Claims

1. A method for adjusting an image, comprising:

determining a viewing location of a viewer of said image; and

adjusting said image to compensate for a viewing location outside a predefined viewing range.

2. The method of claim 1, wherein said viewing location is outside a predefined viewing angle range.

3. The method of claim 1, wherein said viewing location is outside a predefined viewing distance range.

4. The method of claim 1, wherein said adjusting step further comprises the step of mapping pixels in said image to a new image space using a linear transformation that creates a distorted image such that when said distorted image is viewed from an offset viewing location said image appears as if being viewed from a direct viewing location.

5. The method of claim 4, wherein said linear transformation morphs said image to compensate for an offset viewing angle.

6. The method of claim 4, wherein said linear transformation scales said image to compensate for a viewing distance outside said predefined viewing distance range.

7. The method of claim 4, wherein said mapping of pixels to a new image space creates an image with a greater number of pixels using an interpolation technique.

8. A method for adjusting an image, comprising:

determining a viewing location of a viewer of said image; and

mapping pixels in said image to a new image space using a linear transformation that creates a distorted image such that when said distorted image is viewed from an offset viewing location said image appears as if being viewed from a direct viewing location.

9. The method of claim 8, wherein said viewing location is outside a predefined viewing angle range.

10. The method of claim 8, wherein said viewing location is outside a predefined viewing distance range.

11. The method of claim 8, wherein said mapping morphs said image to compensate for an offset viewing angle.

12. The method of claim 8, wherein said mapping scales said image to compensate for a viewing distance outside said predefined viewing distance range.

13. The method of claim 8, wherein said mapping of pixels to a new image space creates an image with a greater number of pixels using an interpolation technique.

15. The system of claim 14, wherein said processor is further configured to map pixels in said image to a new image space using a linear transformation that creates a distorted image such that when said distorted image is viewed from an offset viewing location said image appears as if being viewed from a direct viewing location.

16. The system of claim 15, wherein said new image space has a greater number of pixels obtained using an interpolation technique.

18. The system of claim 17, wherein said new image space has a greater number of pixels obtained using an interpolation technique.

14. A system for adjusting an image, comprising:

a memory for storing computer readable code; and

a processor operatively coupled to said memory (160), said processor configured to;

determine a viewing location of a viewer of said image; and

adjust said image to compensate for a viewing location outside a predefined viewing range.

17. A system for adjusting an image, comprising:

a memory for storing computer readable code; and

a processor operatively coupled to said memory (160), said processor configured to;

determine a viewing location of a viewer of said image; and

map pixels in said image to a new image space using a linear transformation that creates a distorted image such that when said distorted image is viewed from an offset viewing location said image appears as if being viewed from a direct viewing location.

19. An article of manufacture for adjusting an image, comprising:

a computer readable medium having computer readable code means embodied thereon, said computer readable program code means comprising;

a step to determine a viewing location of a viewer of said image; and

a step to adjust said image to compensate for a viewing location outside a predefined viewing range.

20. An article of manufacture for adjusting an image, comprising:

a computer readable medium having computer readable code means embodied thereon, said computer readable program code means comprising;

a step to determine a viewing location of a viewer of said image; and

a step to map pixels in said image to a new image space using a linear transformation that creates a distorted image such that when said distorted image is viewed from an offset viewing location said image appears as if being viewed from a direct viewing location.