Mobile Terminal Finger Marker 3D Control
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Solution Overview
Problem
Existing mobile terminal technologies face challenges in generating accurate control commands using finger images, particularly in environments where finger detection is difficult, as they rely on two-dimensional inputs and lack efficient methods for converting finger movements into three-dimensional coordinates.
Innovation Solution
A mobile terminal configuration that includes a camera, a marker region detection module using color detection techniques like CAMshift, and a coordinate calculation module to generate three-dimensional coordinate values based on a color marker or fingertip region, allowing for precise control command input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If finger image analysis is used for control command generation, then interface versatility is improved, but detection accuracy deteriorates in environments where finger detection is difficult
Solution Approach 1:
A color marker is introduced as an intermediary element between the finger and the detection system. The marker serves as a reliable reference point that can be easily detected by the camera, enabling accurate three-dimensional coordinate calculation even when direct finger detection is difficult. The marker acts as a mediator that translates complex finger geometry into a simple, easily detectable color signal.
Solution Approach 2:
The patent utilizes color detection techniques to identify the marker region in the captured image. By assigning a distinctive color to the marker, the system can reliably distinguish it from the background and finger skin tones. The color-based detection provides robust and accurate marker location, which is then used to calculate three-dimensional coordinates for control commands.
2Device complexity
If two-dimensional finger input is used, then device complexity is reduced, but three-dimensional coordinate generation capability deteriorates
Solution Approach 1:
The system transitions from two-dimensional image analysis to three-dimensional coordinate generation by introducing the color marker as a reference point with known spatial characteristics. The marker's position and size in the image are used to calculate three-dimensional coordinates, effectively adding the depth dimension to the control input without requiring complex multi-sensor systems.
3Measurement precision
If color marker region detection is used, then measurement precision for coordinate calculation is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential information needed for accurate coordinate calculation by focusing solely on the color marker region rather than analyzing the entire finger image. By isolating and detecting only the marker's color information, the system achieves high measurement precision while keeping the processing complexity manageable, as the marker detection algorithm is simpler than comprehensive finger analysis.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the generation of precise three-dimensional control commands, enhancing user interaction with mobile devices by allowing intuitive control of applications and objects using a marker attached to the finger, improving usability and versatility across various devices.
Implementation Method 1
a camera configured to receive a target image including a color marker region attached to a finger
Implementation Method 2
a marker region detection module configured to detect the color marker region in the target image using a color detection technique
Data Source
AI summary
A mobile terminal 200 generating a control command using a marker attached to a finger includes a camera 210 configured to receive a target image including a finger region, a fingertip region detection module 220 configured to detect a finger region in the target image using an image processing technique, and a fingertip region in the finger region, a marker region detection module 230 configured to detect a color marker region attached to the finger in the target image using a color detection technique, a control module 240 configured to operate the fingertip region detection module or the marker region detection module, based on an input from a user, and a coordinate calculation module 250 configured to calculate three-dimensional coordinate values using the fingertip region or the color marker region.