Pointer Movement Dampening for Contour Following
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Solution Overview
Problem
Users find it inconvenient to establish a position in an image using a pointing device, as existing systems require significant concentration and can result in errors when following contours, and restricting pointer movement to follow contours is not always necessary or accurate.
Innovation Solution
A system and method for real-time processing of pointer movements that dampen the movement perpendicular to image contours, allowing the pointer to stabilize and follow contours more accurately while allowing user flexibility in movement, by decomposing pointer movement vectors and reducing components orthogonal to the contour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pointer movement is restricted to follow contours precisely, then the accuracy of contour following is improved, but the ease of operation deteriorates as users require significant concentration and make errors
Solution Approach 1:
The system introduces an intermediary processing layer between the user's pointer movement and the final pointer position. The processor acts as a mediator that receives raw pointer movement data, analyzes contour information from the image, and computes a corrected pointer position that follows the contour more accurately. This intermediary processing resolves the contradiction by automatically handling the precise contour following while the user simply provides general movement directions.
Solution Approach 2:
The system implements feedback by continuously analyzing the contour information at the current pointer position and using it to adjust subsequent pointer movements. The processor determines contour orientation and uses this information to guide the pointer along the contour, providing real-time feedback that improves accuracy without requiring the user to manually follow the contour precisely.
2Stability of the object's composition
If the pointer movement is dampened perpendicular to contours, then the stability of pointer following is improved, but the responsiveness to user input deteriorates
Solution Approach 1:
The system applies local quality by differentiating the treatment of pointer movement in different directions. Movement perpendicular to the contour is dampened to improve stability and reduce oscillations, while movement parallel to the contour is preserved to maintain responsiveness to user input. This directional differentiation resolves the contradiction by applying stability control only where necessary.
Solution Approach 2:
The system changes parameters by dynamically adjusting the dampening factor based on contour characteristics. The processor analyzes the contour orientation and local geometry, then adapts the dampening strength accordingly. This allows the system to maintain stability while preserving responsiveness, as the dampening is optimized for each local region of the contour.
Data Source
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AI summary
A system 100 for real-time processing of a pointer movement provided by a pointing device, the system comprising an output 130 for displaying a pointer 162, 164 at a first position p1 in an image 152, 154, 156, the image comprising a contour; a user input 110 for obtaining pointer movement data 112 from a pointing device 140 operable by a user, the pointer movement data being indicative of a pointer movement v of the pointer from the first position to a second position p2 in the image; and a processor 120 for (i) dampening the pointer movement by reducing the pointer movement along a direction orthogonal 172 to the contour, and (ii) establishing a third position p3 of the pointer based on said dampened pointer movement vd.