3D Widget Control for Surveillance Camera Pan Tilt Zoom
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Solution Overview
Problem
Traditional methods for controlling surveillance cameras via pan, tilt, and zoom parameters are time-consuming and non-intuitive, especially in 3D environments, as operators struggle to mentally transform 2D representations into control operations.
Innovation Solution
A 3D region of interest (ROI) metaphor and widget system allows direct manipulation of camera parameters through handlers like surface, edge, vertex, and rotation handlers, automatically deducing pan, tilt, and zoom adjustments within a 3D environment, enabling intuitive control of camera settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional 2D representations and button/spin bar controls are used for camera parameter adjustment, then device complexity is reduced and ease of manufacture is improved, but ease of operation deteriorates and time consumption increases
Solution Approach 1:
The patent transitions from traditional 2D graphical user interface representations to a 3D immersive virtual environment where camera parameters are controlled through spatial manipulation. Operators interact with 3D wireframe representations of surveillance areas and manipulate camera parameters by performing natural 3D gestures such as grabbing, rotating, and scaling virtual camera icons within the immersive environment, eliminating the need to mentally transform 2D representations into control operations.
2Productivity
If traditional button or spin bar controls are used for camera parameter adjustment, then device complexity is reduced, but productivity deteriorates due to time-consuming operations
Solution Approach 1:
The system pre-renders 3D wireframe representations of surveillance areas and positions virtual camera icons within the immersive virtual environment before operator interaction. This preliminary setup allows operators to immediately begin intuitive 3D spatial manipulation of camera parameters without waiting for 2D representation processing or mental transformation, thereby improving adjustment efficiency.
3Ease of operation
If 2D representations are used to display camera parameters in 3D environment, then device complexity is reduced, but ease of operation deteriorates due to mental transformation requirements
Solution Approach 1:
The patent creates a 3D wireframe copy of the physical surveillance area within the immersive virtual environment, preserving spatial relationships and geometric properties. Virtual camera icons are positioned within this 3D copy, allowing operators to manipulate camera parameters through direct 3D spatial interactions that naturally correspond to real-world camera movements, eliminating the need for mental transformation between 2D representations and 3D operations.
Data Source
AI summary
A system includes a video sensing device, a computer processor coupled to the video sensing device, and a display unit coupled to the computer processor. The system displays on the display unit a field of view of the video sensing device, and displays a three dimensional widget within the field of view. The widget includes one or more features for altering one or more of a location or size of the widget, thereby altering an area in the field of view covered by the widget. The system then alters one or more of a pan, a tilt, and a zoom of the video sensing device as a function of the alteration of the location or size of the widget, thereby altering the field of view of the video sensing device.