IP Library Granted Patent US 11,656,351
Granted Patent B2
US 11,656,351 · App. 16/871,908 · Granted May 23, 2023

Method and mobile device for acquiring AR or VR information by averaging pixel values

Inventors: Wenjun Gao (Beijing, CN); Cong Peng (Beijing, CN)
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
G01S13/89G01S13/42G06T5/50H04W88/02
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Quick Facts
Patent No.
US 11,656,351
App. No.
16/871,908
Granted
May 23, 2023
Kind
B2
Abstract

The disclosure relates to a method and device for acquiring augmented reality (AR) information or virtual reality (VR) information, a mobile terminal, and a storage medium. The method can include an image collection step where a radar wave is transmitted and an echo formed based on the radar wave is received. Based on a transmitting parameter of the radar wave and an echo parameter of the echo, spatial structure information of a collected object in the image collection can be determined. Further, AR information or VR information of the collected object is obtained according to the spatial structure information and a collected image.

Claims (42)

1. A method for acquiring augmented reality (AR) information or virtual reality (VR) information that is applied to a mobile terminal, comprising:

determining a collection direction for collecting an image, and performing image collection by transmitting a radar wave along the collection direction and receiving an echo formed based on the radar wave;

determining an average value of time differences that are acquired for N consecutive times between a transmitting time of the radar wave and a receiving time of an echo at a sampling frequency greater than a sampling frequency threshold, where N is a positive integer greater than 1; determining position information of different positions of a collected object relative to the mobile terminal based on the average value; and determining spatial structure information of the collected object based on the position information; and

obtaining AR information or VR information of the collected object according to the spatial structure information and a collected image.

2. The method of claim 1 , wherein the obtaining the AR information or VR information of the collected object according to the spatial structure information and the collected image further comprises:

establishing a three-dimensional space model of the collected object according to the spatial structure information and the collected image, wherein the three-dimensional space model includes structural features of the collected object indicated by the spatial structure information and texture features of the collected object in the image collection; and

obtaining the AR information or the VR information according to the three-dimensional space model.

3. The method of claim 1 , wherein the mobile terminal is installed with two radar sensors, including a front radar sensor installed on a same side as a front camera in the mobile terminal, and a rear radar sensor installed on a same side as a rear camera in the mobile terminal.

4. The method of claim 1 , wherein a radar sensor is installed on a rotating component of the mobile terminal, and the rotating component of the mobile terminal drives the radar sensor to change a direction.

5. The method of claim 1 , further comprising:

determining a distance difference between distance information of a first position of the collected object relative to the mobile terminal and distance information of a second position adjacent to the first position relative to the mobile terminal;

in response to that the distance difference is greater than a difference threshold, determining, according to the distance difference, a first position corresponding to the distance difference, and

determining contour information of the collected object according to the first position.

6. A device for acquiring augmented reality (AR) information or virtual reality (VR) information that is applied to a mobile terminal, comprising:

a processor; and

a memory for storing instructions executable by the processor;

wherein the processor is configured to:

determine a collection direction for collecting an image, perform an image collection by transmitting a radar wave along the collection direction and receive an echo formed based on the radar wave;

determine an average value of time differences that are acquired for N consecutive times between a transmitting time of the radar wave and a receiving time of an echo at a sampling frequency greater than a sampling frequency threshold, where N is a positive integer greater than 1; determine position information of different positions of a collected object relative to the mobile terminal based on the average value; and determine spatial structure information of the collected object based on the position information; and

obtain AR information or VR information of the collected object according to the spatial structure information and the collected image.

7. The device of claim 6 , wherein the processor is further configured to:

establish a three-dimensional space model of the collected object according to the spatial structure information and the collected image, wherein the three-dimensional space model includes structural features of the collected object indicated by the spatial structure information and texture features of the collected object in the image collection; and

obtain the AR information or the VR information according to the three-dimensional space model.

8. The device of claim 6 , wherein the mobile terminal is installed with two radar sensors, including a front radar sensor installed on a same side as a front camera in the mobile terminal, and a rear radar sensor installed on a same side as a rear camera in the mobile terminal.

9. The device of claim 6 , wherein a radar sensor is installed on a rotating component of the mobile terminal, and the rotating component of the mobile terminal drives the radar sensor to change a direction.

10. The device of claim 6 , wherein the processor is further configured to:

determine a distance difference between distance information of a first position of the collected object relative to the mobile terminal and distance information of a second position adjacent to the first position relative to the mobile terminal;

in response to that the distance difference is greater than a difference threshold, determine, according to the distance difference, a first position corresponding to the distance difference, and

determine contour information of the collected object according to the first position.

11. A non-transitory computer-readable storage medium storing a computer program, the program being executed by a processor to implement a method for acquiring augmented reality (AR) information or virtual reality (VR) information that is applied to a mobile terminal, comprising:

determining a collection direction for collecting an image, and transmitting a radar wave along the collection direction and receiving an echo formed based on the radar wave during image collection;

determining an average value of time differences that are acquired for N consecutive times between a transmitting time of the radar wave and a receiving time of an echo at a sampling frequency greater than a sampling frequency threshold, where N is a positive integer greater than 1; determining position information of different positions of a collected object relative to the mobile terminal based on the average value; and determining spatial structure information of the collected object based on the position information; and

obtaining AR information or VR information of the collected object according to the spatial structure information and a collected image.

12. The non-transitory computer-readable storage medium of claim 11 , wherein the obtaining the AR information or VR information of the collected object according to the spatial structure information and the collected image further comprises:

establishing a three-dimensional space model of the collected object according to the spatial structure information and the collected image, where the three-dimensional space model includes structural features of the collected object indicated by the spatial structure information and texture features of the collected object in the image collection; and

obtaining the AR information or the VR information according to the three-dimensional space model.

13. The non-transitory computer-readable storage medium of claim 11 , wherein the mobile terminal is installed with two radar sensors, including a front radar sensor installed on a same side as a front camera in the mobile terminal, and a rear radar sensor installed on a same side as a rear camera in the mobile terminal.

14. The non-transitory computer-readable storage medium of claim 11 , wherein a radar sensor is installed on a rotating component of the mobile terminal, and the rotating component of the mobile terminal drives the radar sensor to change a direction.

15. The non-transitory computer-readable storage medium of claim 11 , wherein the method further comprises:

determining a distance difference between distance information of a first position of the collected object relative to the mobile terminal and distance information of a second position adjacent to the first position relative to the mobile terminal;

in response to that the distance difference is greater than a difference threshold, determining, according to the distance difference, a first position corresponding to the distance difference, and

determining contour information of the collected object according to the first position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 11, 2020
From: GAO, WENJUN; PENG, CONG
To: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Reel/Frame 052627/0648 →
Priority Claims (1)
CN 202010054123.9 · Jan 17, 2020 · national
Continuity (1)
Related Publication 20210223386A1 · Jul 22, 2021