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Image tracking method and augmented reality achievement method applying method

A technology of augmented reality and implementation method, which is applied in the field of computer visual effects, can solve problems affecting the user's visual experience and the display of augmented reality, and achieve the effect of enhancing user experience

Active Publication Date: 2017-06-13
成都弥知科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon will affect the display of augmented reality special effects and affect the user's visual experience

Method used

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  • Image tracking method and augmented reality achievement method applying method

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Embodiment 1

[0042] An image tracking method, comprising the steps of:

[0043] A1. Obtain target markers;

[0044] A2. Calculate the initial pose matrix of the target marker;

[0045] A3. Read the next frame of data of the target marker, use template matching, Markov model motion state prediction, and Kalman filter algorithm to enter the tracking execution thread to determine a new pose matrix;

[0046] A4. Perform corresponding position transformation on the image according to the new pose matrix;

[0047] A5. Use the steps from A3 to A4 until the target marker disappears.

[0048] The image tracking method can be applied to many, many system applications. The detailed steps of the method are described below with the application of the augmented reality system.

Embodiment 2

[0050] A method for implementing augmented reality based on image tracking, comprising the following steps:

[0051] 1), generating target markers;

[0052] 2), initialize the augmented reality system;

[0053] 3) Obtain real scene images;

[0054] 4), detect and match the target marker, and obtain the initial pose matrix of the target marker;

[0055] 5), rendering 3D engine animation effects;

[0056] 6), start the tracking execution thread, and determine the new pose matrix of the target marker;

[0057] 7) Update the augmented reality animation effects according to the new pose matrix;

[0058] 8), repeat 5) to 7) until the target marker disappears on the screen, the real scene image is acquired again or the augmented reality system stops working.

[0059] Specifically, in step 2), the augmented reality system can be implemented on a device with a camera, such as a mobile phone, a tablet computer, smart glasses or a helmet. The initialization of the augmented reality...

Embodiment 3

[0072] This embodiment refines step 1) on the basis of embodiment 2, specifically including the following steps:

[0073] Select an image. In order to achieve a stable augmented reality effect, the number of pixels in the image should not be too low, and the image should not be too simple and monotonous. Ideally, there should be enough feature points;

[0074] Use the method of linear interpolation to shrink the image in different scales, and build a layer tower, so that the augmented reality system can match the landmarks of various sizes in the image captured by the camera;

[0075] To generate the points of the tracking group, first extract the corner points from the image, and then calculate the gradients in the x and y directions for the extracted corner points, leaving 20% ​​of the corner points with the largest gradient as the points of the tracking group;

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Abstract

The invention discloses an image tracking method and an augmented reality achievement method applying the method. The image tracking method comprises the steps that 1, a target landmark is generated; 2, an augmented reality system is initialized; 3, a real scene image is obtained; 4, the target landmark is detected and matched, and an initial position and gesture matrix of the target landmark is obtained; 5, a 3D engine animation special effect is rendered; 6, a tracking execution thread is enabled, and a new position and gesture matrix of the target landmark is determined; 7, augmented reality animation special effect is updated according to the new position and gesture matrix; 8, the steps 5-7 are repeated till the target landmark disappears on a screen, the real scene image is re-obtained or the augmented reality system stops working. By adopting the method, the problem that picture flutter and motion response lag the landmark can be effectively solved.

Description

technical field [0001] The invention relates to the field of computer visual effects, in particular to an image tracking method and an augmented reality realization method using the method. Background technique [0002] Augmented reality technology is AR, which is called Augmented Reality. It integrates information such as visual effects, sound effects and spatial information in the virtual world into real environment information. Augmented reality technology not only displays the information of the real environment, but also integrates The virtual information is displayed, and the two kinds of information are complemented and superimposed, so that the user can obtain richer perceptual information. Usually, electronic devices equipped with augmented reality technology can use the camera configured on it to The lens captures the images of the real environment, and calculates the position and angle of the captured images in real time, and adds the corresponding virtual images ...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06T7/277
CPCG06F3/011G06T2207/10016
Inventor 施茂燊
Owner 成都弥知科技有限公司
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