Display control methods and apparatuses

Patent metadata

Field	Value
Publication number	US-10140730-B2
Application number	US-201615197664-A
Country	US
Kind code	B2
Filing date	Jun 29, 2016
Priority date	Jun 30, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

Various display control methods and apparatuses are provided. A method comprises acquiring planar mapping relationship information between an imaging plane and a display plane, and deform-displaying the display content on the display plane at least according to the planar mapping relationship information, to reduce a deformation degree of an image formed by the deformed display content on the imaging plane. A requirement for alignment precision of an imaging device required by the imaging plane is reduced to acquire an image of the display content deformed less to some extent, and users' operational convenience is increased.

First claim

What is claimed is:

1. A method, comprising:
acquiring, by a system comprising a processor, planar mapping relationship information between an imaging plane and a display plane, wherein the acquiring the planar mapping relationship information between the imaging plane and the display plane comprises:
determining the planar mapping relationship information according to multi-point position information of the display plane, multi-point position information of the imaging plane, and posture information of the imaging plane, wherein the determining the planar mapping relationship information according to the multi-point position information of the display plane, the multi-point position information of the imaging plane, and the posture information of the imaging plane comprises:
determining first mapping relationship information of multiple first points of the display plane relative to a reference coordinate system respectively according to the multi-point position information of the display plane;
determining second mapping relationship information of multiple second points of the imaging plane relative to the reference coordinate system respectively according to the multi-point position information of the imaging plane and the posture information of the imaging plane; and
determining the planar mapping relationship information according to the first mapping relationship information and the second mapping relationship information; and

deform-displaying display content on the display plane at least according to the planar mapping relationship information resulting in deformed display content, wherein the deform-displaying reduces a deformation degree of an image formed by the deformed display content on the imaging plane.

2. The method of claim 1 , further comprising:
before the determining the planar mapping relationship information, acquiring the multi-point position information of the imaging plane and the posture information of the imaging plane.

3. The method of claim 2 , wherein the acquiring the multi-point position information of the imaging plane and the posture information of the imaging plane comprises:
positioning and detecting a posture of an imaging device comprising the imaging plane, to acquire the multi-point position information of the imaging plane and the posture information of the imaging plane.

4. The method of claim 2 , wherein the acquiring the multi-point position information of the imaging plane and the posture information of the imaging plane comprises:
receiving the multi-point position information of the imaging plane and the posture information of the imaging plane from an imaging device comprising the imaging plane.

5. The method of claim 1 , wherein the acquiring the planar mapping relationship information between the imaging plane and the display plane comprises:
acquiring a reference content of the display plane and multi-point mapping relationship information of multiple pairs of corresponding points between images of the reference content formed on the imaging plane; and
determining the planar mapping relationship information according to the multi-point mapping relationship information.

6. The method of claim 5 , wherein the reference content comprises: the display content, or other display content displayed on the display plane other than the display content.

7. The method of claim 5 , further comprising:
before the acquiring the reference content of the display plane and the multi-point mapping relationship information of the multiple pairs of the corresponding points between the images of the reference content formed on the imaging plane, acquiring multi-point position information of an image of the images of the reference content formed on the imaging plane.

8. The method of claim 7 , wherein the acquiring the multi-point position information of the image of the images of the reference content formed on the imaging plane comprises:
acquiring the image of the images of the reference content formed on the imaging plane; and
performing feature analysis on the image of the images of the reference content formed on the imaging plane, to determine the multi-point position information of the image of the images of the reference content formed on the imaging plane.

9. The method of claim 8 , wherein the acquiring the image of the images of the reference content formed on the imaging plane comprises:
shooting the image of the images of the reference content formed on the imaging plane.

10. The method of claim 8 , wherein the acquiring the image of the images of the reference content formed on the imaging plane comprises:
receiving the image of the images of the reference content formed on the imaging plane from an imaging device comprising the imaging plane.

11. The method of claim 7 , wherein the acquiring the multi-point position information of the image of the images of the reference content formed on the imaging plane comprises:
receiving the multi-point position information of the image of the images of the reference content formed on the imaging plane from an imaging device comprising the imaging plane.

12. The method of claim 1 , further comprising:
determining a desired display area of the display content on the display plane, and
wherein the deform-displaying the display content on the display plane at least according to the planar mapping relationship information, to reduce the deformation degree of the image formed by the deformed display content on the imaging plane comprises: deform-displaying the display content on the display plane according to the desired display area and the planar mapping relationship information, to reduce the deformation degree of the image formed by the deformed display content on the imaging plane.

13. The method of claim 12 , wherein the determining the desired display area of the display content on the display plane comprises:
determining an allowable imaging range of an imaging device comprising the imaging plane; and
determining the desired display area according to the allowable imaging range and the display plane.

14. The method of claim 1 , wherein the deformed display content on the display plane is at least one of at least partially drawn, at least partially flattened, at least partially zoomed out, at least partially tilted or at least partially distorted.

15. The method of claim 1 , further comprising:
before the deform-displaying the display content on the display plane, receiving a shooting request for the display content.

16. The method of claim 1 , further comprising:
before the deform-displaying the display content on the display plane, receiving a deform-display control request for the display content.

17. The method of claim 1 , further comprising:
before the deform-displaying the display content on the display plane, determining that an imaging device comprising the imaging plane is in a view range of the display plane.

18. An apparatus, comprising:
a memory that stores executable modules; and
a processor, coupled to the memory, that executes or facilitates execution of the executable modules, the executable modules comprising:
a planar mapping relationship information acquisition module configured to acquire planar mapping relationship information between an imaging plane and a display plane, wherein the planar mapping relationship information acquisition module comprises:
a first planar mapping relationship information acquisition sub-module configured to determine the planar mapping relationship information according to multi-po

Assignees

• Beijing Zhigu Ruituo Tech Co Ltd

Inventors

• Ding Dayong

Classifications

• G06T11/00 Primary

  Two-dimensional [2D] image generation · CPC title

• G06T2207/30244

  Camera pose · CPC title

• G06T7/33 Primary

  using feature-based methods · CPC title

• G06T3/00

  Geometric image transformations in the plane of the image · CPC title