Character input method and device using a background image portion as a control region

• US 10,621,766 B2
• Filed: 10/13/2017
• Issued: 04/14/2020
• Est. Priority Date: 03/15/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Li, Yingjie
• Primary Examiner(s): Lee, Gene W
• Application Number:
  US15/783,618
• Publication Number:
  US 20180268585A1
• Time in Patent Office: 914 Days
• CPC Class Codes: G06F 1/163 Wearable computers, e.g. on a belt
• 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: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text

Abstract

The present disclosure relates to a character input method, a character input device, and a wearable device. The character input method includes: acquiring a background image; determining a portion of the background image as a control region; superimposedly displaying a character input interface and the background image; and moving the control region relative to the character input interface to select a particular character in the character input interface.

Claims

1. A character input method, comprising:

acquiring a background image;

determining a portion of the background image as a control region;

superimposedly displaying a character input interface and the background image; and

moving the control region relative to the character input interface to select a particular character in the character input interface,

wherein the determining a portion of the background image as a control region comprises;

calculating a local average brightness of each portion in the background image and determining a portion having an average brightness significantly different from average brightness of other portions as the control region.

2. The character input method according to claim 1, wherein when the control region overlaps with the specific character, the specific character is input upon reception of an input trigger instruction.

3. The character input method according to claim 2, wherein the trigger instruction is generated when at least one of following conditions is satisfied:

an overlapping time reaching a predetermined threshold;

a moving range of the control region relative to the specific character within a predetermined time being less than the predetermined threshold; and

receiving a user input.

4. The character input method according to claim 1, wherein the control region is a portion having a lowest average brightness in the background image.

5. The character input method according to claim 1, wherein the background image is acquired by a camera, and the determining a portion of the background image as a control region comprises:

the control region being a specific object located in front of the camera and acquired into the background image.

6. The character input method according to claim 1, further comprising:

deleting a character input a last time when a deleting instruction is received.

7. The character input method according to claim 6, wherein the deleting instruction is generated when at least one of following conditions is satisfied:

a camera being blocked;

the camera moving according to a predetermined motion mode;

receiving a user input.

8. A wearable device, comprising:

a processor; and

a memory storing computer-readable instructions,

wherein, when the computer readable instructions stored in the memory are executed, the processor is configured to perform;

acquiring a background image;

determining a portion of the background image as a control region;

superimposedly displaying a character input interface and the background image; and

moving the control region relative to the character input interface to select a particular character in the character input interface,

wherein the determining a portion of the background image as a control region comprises;

calculating a local average brightness of each portion in the background image and determining a portion having an average brightness significantly different from average brightness of other portions as the control region.

9. The wearable device according to claim 8, wherein when the control region overlaps with the specific character, the specific character is input upon reception of an input trigger instruction.

10. The wearable device according to claim 9, wherein the trigger instruction is generated when at least one of following conditions is satisfied:

an overlapping time reaching a predetermined threshold;

a moving range of the control region relative to the specific character within a predetermined time being less than the predetermined threshold; and

receiving a user input.

11. The wearable device according to claim 8, wherein the control region is a portion having a lowest average brightness in the background image.

12. The wearable device of claim 8, the processor is further configured to perform:

deleting a character input a last time when a deleting instruction is received.

13. The wearable device of claim 12, wherein the deleting instruction is generated when at least one of following conditions is satisfied:

a camera being blocked;

the camera moving according to a predetermined motion mode;

receiving a user input.

14. A wearable device, comprising:

a processor; and

a memory storing computer-readable instructions,

wherein, when the computer readable instructions stored in the memory are executed, the processor is configured to perform;

acquiring a background image;

determining a portion of the background image as a control region;

superimposedly displaying a character input interface and the background image; and

moving the control region relative to the character input interface to select a particular character in the character input interface,

wherein the background image is acquired by a camera, and the determining a portion of the background image as a control region comprises;

the control region being a specific object located in front of the camera and acquired into the background image.

15. The wearable device according to claim 14, wherein when the control region overlaps with the specific character, the specific character is input upon reception of an input trigger instruction.

16. The wearable device according to claim 15, wherein the trigger instruction is generated when at least one of following conditions is satisfied:

an overlapping time reaching a predetermined threshold;

a moving range of the control region relative to the specific character within a predetermined time being less than the predetermined threshold; and

receiving a user input.

17. The wearable device of claim 14, the processor is further configured to perform:

deleting a character input a last time when a deleting instruction is received.

18. The wearable device of claim 17, wherein the deleting instruction is generated when at least one of following conditions is satisfied:

a camera being blocked;

the camera moving according to a predetermined motion mode;

receiving a user input.