Inclination Detection Zero Point Correction for Image Capture
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Solution Overview
Problem
Existing image capture apparatuses face erroneous zero point position correction due to variations in sensor output caused by vibrations or accelerations other than gravitational acceleration, leading to incorrect detection of the horizontal level.
Innovation Solution
An image capture apparatus with an inclination detection unit, display unit, still state determination unit, and reference orientation setting unit that only sets the reference orientation if the device is determined to be in a still state, within a predetermined inclination range, thereby preventing incorrect zero point position correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If zero point position correction is performed using sensor output values, then the horizontal level can be detected, but erroneous correction occurs when vibration or non-gravitational acceleration is present
Solution Approach 1:
The system performs preliminary determination of whether the image capture apparatus is in a still state before executing zero point position correction. This preliminary check prevents erroneous correction by ensuring the apparatus is stationary and not subject to vibration or non-gravitational acceleration, thereby resolving the contradiction between correction accuracy and reliability under vibration conditions
2Measurement precision
If the sensor output is used for inclination detection, then the inclination angle can be detected, but the zero point position shifts due to environmental changes
Solution Approach 1:
The system continuously monitors the output values of the acceleration sensor and determines whether the image capture apparatus is in a still state based on this feedback. This feedback mechanism allows the system to distinguish between stable gravitational acceleration and transient vibrations, maintaining zero point position stability while preserving inclination detection accuracy
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
Ensures accurate zero point position correction by distinguishing between gravitational and non-gravitational accelerations, reducing the likelihood of erroneous orientation adjustments and ensuring proper image capture.
Implementation Method 1
an image capture apparatus such as a digital camera can detect its inclination angle by detecting the direction of gravity using, for example, an acceleration sensor
Data Source
AI summary
An image capture apparatus comprises an inclination detection unit which detects an inclination of the image capture apparatus, a display unit which displays the inclination of the image capture apparatus, and a predetermined reference orientation set for the image capture apparatus, a still state determination unit which determines that the image capture apparatus is in a still state, if a variation of the inclination falls within a predetermined range, and a reference orientation setting unit which sets the reference orientation of the image capture apparatus, wherein the reference orientation setting unit does not set the reference orientation if the still state determination unit determines that the image capture apparatus is not in the still state.