PTZ Camera Position Restoration for Surveillance Scenarios

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Solution Overview

Problem

Conventional security systems, particularly those incorporating pan-tilt-zoom (PTZ) cameras, face difficulties in maintaining consistent surveillance views due to random changes in PTZ positions during normal operations, requiring significant time for operators to adjust settings to achieve desired surveillance views when recalling saved scenarios.

Innovation Solution

A security system that saves and recalls PTZ positions of PTZ cameras along with a scenario name, ensuring that when a scenario is played, each PTZ camera returns to its preset positions, maintaining the exact view as when the scenario was saved, thereby allowing for seamless recall and adjustment of surveillance layouts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If PTZ cameras are used to provide flexible surveillance coverage, then the surveillance capability and adaptability are improved, but the complexity of maintaining consistent views across scenario switches increases

Engineering Contradiction:
Improvesurveillance capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by automatically restoring PTZ camera positions, pan-tilt settings, and window layout configurations when a surveillance scenario is activated. This eliminates the need for operators to manually adjust each camera and display element, thereby reducing operational complexity while maintaining high adaptability across different surveillance scenarios.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If multiple surveillance scenarios are saved with different camera positions, then the versatility of the system is improved, but the time required to recall and setup scenarios increases

Engineering Contradiction:
Improvescenario flexibilityVSAvoidscenario setup time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary restoration of all camera positions, display window layouts, and surveillance parameters automatically when a scenario is recalled. This preliminary action eliminates manual setup time and allows operators to switch between multiple surveillance scenarios instantly, maintaining both scenario flexibility and operational efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates and stores copies of complete surveillance scenario configurations including PTZ positions, window arrangements, and camera selections. When a scenario is recalled, the system copies these pre-saved configurations and applies them automatically, eliminating manual reconfiguration and reducing scenario setup time to near-zero.

Inventive Principle:
Principle #26Copying

3Measurement precision

If manual adjustment of PTZ positions is required for each scenario, then the precision of surveillance views is improved, but the operator effort and time consumption increase

Engineering Contradiction:
Improveview precisionVSAvoidoperator effort
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system performs self-service by automatically restoring PTZ camera positions, display window layouts, and surveillance parameters when a scenario is activated. This eliminates the need for operator intervention in manual adjustments, thereby maintaining precise surveillance views while significantly reducing operator effort and time consumption.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9990821B2Method of restoring camera position for playing video scenario
Publication Date: 2018.06.05 HONEYWELL INTERNATIONAL INC
  • US9990821B2 patent drawing
  • US9990821B2 patent drawing
  • US9990821B2 patent drawing

AI summary

An apparatus is provided that includes a plurality of pan-tilt-zoom (PTZ) cameras, each of the plurality of PTZ cameras having a respective field of view that covers a respective portion of a secured geographic area, a memory that saves a plurality of surveillance scenarios, each of the plurality of surveillance scenarios including a respective pan, tilt, and a zoom position for each of the plurality of PTZ cameras, and a user interface that receives a selection of one of the plurality of surveillance scenarios from a human user and, in response, simultaneously displays respective real time video images from each of the plurality of PTZ cameras using the respective pan, tilt, and zoom positions of the one of the plurality of surveillance scenarios.