Granted Patent B2

US 12,205,191 · App. 17/909,109 · Granted Jan 21, 2025

Inventor: Changhui Cheng (Zhejiang, CN)

Assignee: ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD.

G06T1/0085G06T2207/10016

Abstract

Claims (75)

1. A watermark adding method, comprising:

acquiring watermark information to be added, and determining a time offset according to the watermark information;

acquiring a video frame rate, and determining time information of a frame image in a video according to the video frame rate; and

performing offset processing on the time information according to the time offset to add the watermark information to the video;

wherein acquiring the watermark information to be added, and determining the time offset according to the watermark information comprises:

acquiring the watermark information to be added, and encoding the watermark information in a preset encoding manner to obtain encoding information of at least two bits; and

determining the time offset according to the encoding information of at least two-bits.

2. The method according to claim 1 , after encoding the watermark information in the preset encoding manner to obtain the encoding information of at least two bits, further comprising:

adding at least one of a head identifier or a tail identifier to the encoding information of at least two bits to obtain a target code;

wherein determining the time offset according to the encoding information of at least two bits comprises:

determining the time offset of the frame image in the video according to the target code.

3. The method according to claim 2 , after determining the time offset of the frame image in the video according to the target code, further comprising: cyclically adding the time offset to get a cyclically added time offset;

wherein performing the offset processing on the time information according to the time offset comprises: performing the offset processing on the time information according to the cyclically added time offset.

4. The method according to claim 1 , after determining the time information of the frame image in the video according to the video frame rate, further comprising:

acquiring a total number of frame images within a unit duration;

wherein performing the offset processing on the time information according to the time offset comprises:

performing offset processing on time information of a first number of frame images within the unit duration according to the time offset, and performing offset compensation on time information of a second number of frame images, wherein a sum of the first number of frame images and the second number of frame images is the total number of frame images within the unit duration.

5. The method according to claim 4 , wherein performing the offset compensation on the time information of the second number of frame images comprises:

acquiring offset data of the first number of frame images;

reversing the offset data to get a reversed offset data, and taking a negative number of the reversed offset data as offset compensation data; and

performing offset processing on the time information of the second number of frame images according to the offset compensation data.

6. The method according to claim 1 , after performing the offset processing on the time information according to the time offset, further comprising:

in a case where a watermark information acquisition request is detected, acquiring the time information of the frame image in the video; and

determining encoding information carried in the frame image in the video according to the time information and a preset encoding manner.

7. A non-transitory computer-readable storage medium configured to store a computer program, wherein the computer program, when executed by a processor, implements:

acquiring watermark information to be added, and determining a time offset according to the watermark information;

acquiring a video frame rate, and determining time information of a frame image in a video according to the video frame rate; and

performing offset processing on the time information according to the time offset to add the watermark information to the video;

wherein acquiring the watermark information to be added, and determining the time offset according to the watermark information comprises:

acquiring the watermark information to be added, and encoding the watermark information in a preset encoding manner to obtain encoding information of at least two bits; and

determining the time offset according to the encoding information of at least two-bits.

8. The non-transitory computer-readable storage medium according to claim 7 , wherein the computer program, when executed by the processor, implements:

acquiring the watermark information to be added, and encoding the watermark information in a preset encoding manner to obtain encoding information of at least two bits; and

determining the time offset according to the encoding information of at least two-bits.

9. The non-transitory computer-readable storage medium according to claim 8 , wherein the computer program, when executed by the processor, implements:

adding at least one of a head identifier or a tail identifier to the encoding information of at least two bits to obtain a target code;

wherein determining the time offset according to the encoding information of at least two bits comprises:

determining the time offset of the frame image in the video according to the target code.

10. The non-transitory computer-readable storage medium according to claim 9 , wherein the computer program, when executed by the processor, implements: cyclically adding the time offset to get a cyclically added time offset;

wherein performing the offset processing on the time information according to the time offset comprises: performing the offset processing on the time information according to the cyclically added time offset.

11. The non-transitory computer-readable storage medium according to claim 7 , wherein the computer program, when executed by the processor, implements:

acquiring a total number of frame images within a unit duration;

wherein performing the offset processing on the time information according to the time offset comprises:

performing offset processing on time information of a first number of frame images within the unit duration according to the time offset, and performing offset compensation on time information of a second number of frame images, wherein a sum of the first number of frame images and the second number of frame images is the total number of frame images within the unit duration.

12. The non-transitory computer-readable storage medium according to claim 11 , wherein the computer program, when executed by the processor, implements:

acquiring offset data of the first number of frame images;

reversing the offset data to get a reversed offset data, and taking a negative number of the reversed offset data as offset compensation data; and

performing offset processing on the time information of the second number of frame images according to the offset compensation data.

13. A device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements:

acquiring watermark information to be added, and determining a time offset according to the watermark information;

acquiring a video frame rate, and determining time information of a frame image in a video according to the video frame rate; and

performing offset processing on the time information according to the time offset to add the watermark information to the video;

wherein acquiring the watermark information to be added, and determining the time offset according to the watermark information comprises:

acquiring the watermark information to be added, and encoding the watermark information in a preset encoding manner to obtain encoding information of at least two bits; and

determining the time offset according to the encoding information of at least two-bits.

14. The device according to claim 13 , wherein the processor, when executing the computer program, implements:

acquiring the watermark information to be added, and encoding the watermark information in a preset encoding manner to obtain encoding information of at least two bits; and

determining the time offset according to the encoding information of at least two-bits.

15. The device according to claim 13 , wherein the processor, when executing the computer program, implements:

adding at least one of a head identifier or a tail identifier to the encoding information of at least two bits to obtain a target code;

wherein determining the time offset according to the encoding information of at least two bits comprises:

determining the time offset of the frame image in the video according to the target code.

16. The device according to claim 15 , wherein the processor, when executing the computer program, implements: cyclically adding the time offset to get a cyclically added time offset;

wherein performing the offset processing on the time information according to the time offset comprises: performing the offset processing on the time information according to the cyclically added time offset.

17. The device according to claim 13 , wherein the processor, when executing the computer program, implements:

acquiring a total number of frame images within a unit duration;

wherein performing the offset processing on the time information according to the time offset comprises:

performing offset processing on time information of a first number of frame images within the unit duration according to the time offset, and performing offset compensation on time information of a second number of frame images, wherein a sum of the first number of frame images and the second number of frame images is the total number of frame images within the unit duration.

18. The device according to claim 17 , wherein the processor, when executing the computer program, implements:

acquiring offset data of the first number of frame images;

reversing the offset data to get a reversed offset data, and taking a negative number of the reversed offset data as offset compensation data; and

performing offset processing on the time information of the second number of frame images according to the offset compensation data.

19. The device according to claim 13 , wherein the processor, when executing the computer program, implements:

in a case where a watermark information acquisition request is detected, acquiring the time information of the frame image in the video; and

determining encoding information carried in the frame image in the video according to the time information and a preset encoding manner.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (18)