Systems and methods for video replaying

Patent metadata

Field	Value
Publication number	US-11482256-B2
Application number	US-202016939223-A
Country	US
Kind code	B2
Filing date	Jul 27, 2020
Priority date	Jan 16, 2017
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

The present disclosure relates to systems and methods video recording and video replaying. The method may include obtaining video data from a video recording device. The method may also include generating an index item corresponding to the video data if the video data includes a key frame, wherein the index item includes an index position of the video recording device corresponding to the key frame, and an offset address used to determine an address where the key frame is stored. The method may further include storing an index table including at least the index item in a video.

First claim

What is claimed is:

1. A system, comprising:
at least one non-transitory storage medium, including a set of instructions for video replaying and video recording;
logic circuits in communication with the at least one storage medium, wherein when executing the set of instructions, the logic circuits are directed to:
obtain video data from a video recording device;
generate an index item corresponding to the video data if the video data includes a key frame, wherein the index item includes an index position of the video recording device corresponding to the key frame, and an offset address used to determine an address where the key frame is stored, wherein the index position of the video recording device includes coordinates of a PTZ head and the video recording device cruises periodically between at least two observation sites corresponding to at least two index positions; and
store an index table including at least the index item in a video.

2. The system of claim 1 , wherein the logic circuits are further directed to:
identify a video frame including an event from the video data;
obtain an index position of the video recording device corresponding to the identified video frame;
generate an event indicator corresponding to the event; and
generate an index item based on the event indicator corresponding to the event, the index position of the video recording device corresponding to the identified video frame, and an offset address of the identified video frame.

3. The system of claim 2 , wherein the index item further includes a frame type, a time stamp, and a frame length of the identified video frame.

4. The system of claim 2 , wherein to identify the video frame including the event from the video data, the logic circuits are directed to:
obtain an event identification model; and
identify the video frame including the event by inputting video frames of the video data into the event identification model.

5. The system of claim 4 , wherein the event identification model includes a neural network.

6. The system of claim 2 , wherein the logic circuits being further directed to:
identify video frames including first events at a first observation site of the at least two observation sites; and
generate index items corresponding to the first events at the first observation site.

7. The system of claim 6 , wherein the logic circuits are further directed to:
identify video frames including second events at a second observation site of the at least two observation sites; and
generate index items corresponding to the second events at the second observation site.

8. The system of claim 2 , wherein the logic circuits are further directed to:
obtain a target position of the video recording device and a target event indicator corresponding to a target event;
obtain a video clip including the target event by searching the index table of the video including the video clip based on the target position and the target event indicator; and
replay the target event in the video clip.

9. The system of claim 8 , wherein to obtain the video clip including the target event by searching the index table of the video including the video clip based on the target position and the target event indicator, the logic circuits are directed to:
determine a target index position of the video recording device by searching the index table based on the target position of the video recording device, wherein the index table indexes a plurality of positions of the video recording device;
identify an index item in the index table based on the target index position and the target event indicator corresponding to the target event;
determine an offset address from the identified index item, the offset address being used to determine an address where a video frame include the target event is stored; and
obtain the video clip including the target event based on the offset address.

10. The system of claim 1 , wherein the logic circuits are further directed to:
obtain a target position of the video recording device corresponding to a target scene;
determine a target index position of the video recording device by searching the index table associated with the video based on the target position of the video recording device corresponding to the target scene, wherein the index table indexes a plurality of positions of the video recording device;
determine an offset address in the index table corresponding to the target index position of the video recording device, wherein the offset address is used to determine an address where a key frame corresponding to the target index position of the video recording device is stored;
obtain a video clip including the target scene based on the offset address; and
replay the target scene in the video clip.

11. A system, comprising:
at least one non-transitory storage medium, including a set of instructions for video replaying and video recording;
logic circuits in communication with the at least one storage medium, wherein when executing the set of instructions, the logic circuits are directed to:
obtain video data from a video recording device;
identify a video frame including an event from the video data;
obtain an index position of the video recording device corresponding to the identified video frame;
generate an event indicator corresponding to the event;
generate an index item based on the event indicator corresponding to the event, wherein the index item includes the index position of the video recording device corresponding to the identified video frame, and an offset address of the video frame, wherein the index position of the video recording device includes coordinates of a PTZ head and the video recording device cruises periodically between at least two observation sites corresponding to at least two index positions; and
store an index table including at least the index item in a video clip.

12. The system of claim 11 , wherein the logic circuits being further directed to:
identify video frames including first events at a first observation site of the at least two observation sites; and
generate index items corresponding to the first events at the first observation site.

13. The system of claim 12 , wherein the logic circuits are further directed to:
identify video frames including second events at a second observation site of the at least two observation sites; and
generate index items corresponding to the second events at the second observation site.

14. The system of claim 11 , wherein the logic circuits are further directed to:
obtain a target position of the video recording device and a target event indicator corresponding to a target event;
obtain a video clip including the target event by searching the index table of the video including the video clip based on the target position and the target event indicator; and
replay the target event in the video clip.

15. The system of claim 14 , wherein to obtain the video clip including the target event by searching the index table of the video including the video clip based on the target position and the target event indicator, the logic circuits are directed to:
determine a target index position of the video recording device by searching the index table based on the target position of the video recording device, wherein the index table indexes a plurality of positions of the video recording device;
identify an index item in the index table based on the target index position and the target event indicator corresponding to the target event;
determine an offset address from the identified index item, the o

Assignees

• Zhejiang Dahua Technology Co

Inventors

• Qin Changhong
• Cao Shengguo
• Wang Shouyi

Classifications

• G11B27/10 Primary

  Indexing; Addressing; Timing or synchronising; Measuring tape travel · CPC title

• G11B27/031 Primary

  Electronic editing of digitised analogue information signals, e.g. audio or video signals · CPC title