Pan Tilt Camera Vertical Alignment Image Rotation
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Solution Overview
Problem
Existing imaging systems with pan/tilt cameras cause user discomfort and reduced visibility when adjusting the optical axis direction, as the vertical orientation of objects is often mismatched during centering, and the speed of pan and tilt operations can affect image clarity.
Innovation Solution
An imaging system that includes a camera, pan/tilt mechanisms, display, input means for user designation, and image processing to align the vertical direction of objects after movement to the center, using template matching for rotation calculations and optimizing rotation speeds to minimize movement distance and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pan/tilt camera is controlled to center the designated object on the display screen, then the object position is improved, but the vertical orientation of the object becomes misaligned causing user discomfort
Solution Approach 1:
The system performs preliminary calculation of the required image rotation angle based on the camera's pan and tilt angles before executing the centering operation. This preliminary action ensures that when the object is centered, its vertical orientation is already corrected, eliminating user discomfort without requiring additional post-centering adjustments.
Solution Approach 2:
The system continuously monitors the camera's pan and tilt angles and uses this feedback to dynamically calculate and apply the appropriate image rotation. This feedback mechanism ensures that the image rotation is always synchronized with the camera's movement, maintaining proper vertical alignment throughout the centering process.
2Speed
If the pan/tilt operation speed is increased to improve responsiveness, then the centering speed is improved, but the visibility of the object is reduced due to motion blur
Solution Approach 1:
The system calculates the optimal rotation speed in advance based on the required pan and tilt angles, ensuring that the image rotation is completed smoothly without abrupt changes. This preliminary speed calculation allows the system to achieve fast centering while maintaining image clarity by avoiding excessive motion blur.
Solution Approach 2:
The system dynamically adjusts the rotation speed based on the current pan and tilt angles, using interpolation to create smooth transitions. This dynamic speed adjustment ensures that the centering operation is both fast and smooth, maintaining image visibility while achieving responsive centering.
3Ease of operation
If the image is rotated to align the vertical direction after pan/tilt movement, then the vertical alignment is improved, but the device complexity increases
Solution Approach 1:
Instead of using complex mechanical image rotation mechanisms, the system substitutes this with a computational approach. The image processing unit calculates the required rotation angle based on pan and tilt angles and applies the rotation through software image processing, significantly reducing mechanical complexity while achieving the same vertical alignment effect.
Solution Approach 2:
The system changes the parameter of image rotation angle based on the pan and tilt angles. By establishing a mathematical relationship between these parameters, the system can automatically adjust the image rotation without requiring complex additional hardware, thus reducing device complexity while maintaining alignment accuracy.
Data Source
AI summary
An object of the invention is to provide an imaging system and an imaging control method that remove user discomfort in the display of an image associated with the adjustment of the direction of an optical axis of a pan tilt camera and improve visibility. The above-mentioned object is achieved by an imaging system including a camera that captures an image of an object to acquire object image data, pan/tilt means for rotating the camera in a pan direction and a tilt direction perpendicular to the pan direction, input means for enabling a user to designate a designation point at an arbitrary position of a display screen, designated position acquisition means for acquiring positional information of the designation point, pan/tilt control means for linearly moving an optical axis of the camera from a current position to a position of a designated object corresponding to the designation point to linearly move the designated object from the current position of the display screen to a center of the display screen, and image processing means for rotating the object image data displayed on the display screen on the optical axis of the camera and aligning a vertical direction after the movement of the optical axis with a vertical direction before the movement of the optical axis.