MONITOR DEVICE AND DYNAMIC OBJECT MONITORING METHOD

• US 20160127696A1
• Filed: 10/19/2015
• Published: 05/05/2016
• Est. Priority Date: 10/31/2014
• Status: Active Grant

• Current Assignee: Nanning Fugui Precision Industrial Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: LIN, HUNG-CHANG
• Granted Patent: US 9,928,608 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06T 7/254 involving subtraction of images
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: H04N 19/102 characterised by the element, parameter or selection affected or controlled by the adaptive coding
• CPC Class Codes: H04N 19/137 Motion inside a coding unit, e.g. average field, frame or block difference
• CPC Class Codes: H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• CPC Class Codes: H04N 19/17 the unit being an image region, e.g. an object
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/52 by predictive encoding
• CPC Class Codes: H04N 23/611 where the recognised objects include parts of the human body
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera

Abstract

A dynamic object monitoring method including, setting types of monitored zones of a monitored region in a video frame captured by a network camera and setting device parameters and sensitivity values corresponding to each of the monitored zones. Analyzing the predicted macro blocks of a current shooting frame retrieved by the network camera according to the prediction mode of the MPEG-4 encoding algorithm. Counting a number of the predicted macro blocks of each of the monitored zones. Determining whether a number of predicted macro blocks of a monitored zone is equal to or greater than a corresponding preset value. A monitored zone is determined where a dynamic object is located. The device parameters of the network camera as device parameters of the monitored zone are adjusted where the dynamic object is located for recording.

Claims

1. A dynamic object monitoring method, executable by a processor of a server, the method comprising:

setting types of monitored zones of a monitored region in a video frame captured by a network camera;

setting device parameters and sensitivity values corresponding to each of the monitored zones, wherein the sensitivity values refer to the quantity of preset values of predicted macro blocks in a monitored zone according to a prediction mode of the fourth generation motion picture expert group (MPEG-4) standard;

analyzing the predicted macro blocks of a current shooting frame retrieved by the network camera according to the prediction mode of the MPEG-4 encoding algorithm;

counting a number of the predicted macro blocks of each of the monitored zones;

determining whether a number of predicted macro blocks of a monitored zone is equal to or greater than a corresponding preset value;

when the number of predicted macro blocks of at least one monitored zone is equal to or greater than the corresponding preset value, determine a monitored zone where a dynamic object is located; and

adjusting the device parameters of the network camera as device parameters of the monitored zone where the dynamic object is located for recording.

2. The method as claimed in claim 1, further comprising:

determining the dynamic object is not existing in the monitored zone when the number of predicted macro blocks of at each of the monitored zones is less than the corresponding preset value.

3. The method as claimed in claim 1, wherein the prediction mode include 4 by 4 predicted macro blocks and 16 by 16 predicted macro blocks.

4. The method as claimed in claim 1, wherein the device parameters include focal length and encoding frames of the network camera.

5. The method as claimed in claim 4, further comprising:

when the dynamic object is located in a safe zone, the device parameters for the network camera are configured as the minimum encoding frames and the maximum focal length for recording;

when the dynamic object is located in a warning zone, the device parameters for the network camera are configured as higher encoding frames and automatic focusing on the dynamic object is activated for recording; and

when the dynamic object is located in a alarm zone, the device parameters for the network camera are configured as the maximum encoding frames, automatic focusing for the dynamic object is activated, and the maximum hardware performance is enabled for recording.

6. A monitor device, which is controlling a network camera, the monitor device comprising:

at least one processor;

a storage system; and

one or more programs that are stored in the storage system and executed by the at least one processor, the one or more programs comprising instructions for;

setting types of monitored zones of a monitored region in a video frame captured by a network camera;

setting device parameters and sensitivity values corresponding to each of the monitored zones, wherein the sensitivity values refer to the quantity of preset values of predicted macro blocks in a monitored zone according to a prediction mode of the fourth generation motion picture expert group (MPEG-4) standard;

analyzing the predicted macro blocks of a current shooting frame retrieved by the network camera according to the prediction mode of the MPEG-4 encoding algorithm;

counting a number of the predicted macro blocks of each of the monitored zones;

determining whether a number of predicted macro blocks of a monitored zone is equal to or greater than a corresponding preset value;

when the number of predicted macro blocks of at least one monitored zone is equal to or greater than the corresponding preset value, determine a monitored zone where a dynamic object is located; and

adjusting the device parameters of the network camera as device parameters of the monitored zone where the dynamic object is located for recording.

7. The monitor device as claimed in claim 6, further comprising instructions for:

determining the dynamic object is not existing in the monitored zone when the number of predicted macro blocks of at each of the monitored zones is less than the corresponding preset value.

8. The monitor device as claimed in claim 6, wherein the prediction mode include 4 by 4 predicted macro blocks and 16 by 16 predicted macro blocks.

9. The monitor device as claimed in claim 6, wherein the device parameters include focal length and encoding frames of the network camera.

10. The monitor device as claimed in claim 9, further comprising instructions for:

when the dynamic object is located in a safe zone, the device parameters for the network camera are configured as the minimum encoding frames and the maximum focal length for recording;

when the dynamic object is located in a warning zone, the device parameters for the network camera are configured as higher encoding frames and automatic focusing on the dynamic object is activated for recording; and

when the dynamic object is located in a alarm zone, the device parameters for the network camera are configured as the maximum encoding frames, automatic focusing for the dynamic object is activated, and the maximum hardware performance is enabled for recording.