Displayed Image Orientation Alignment Using Sequential Frame Feedback
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Solution Overview
Problem
Document cameras and projectors often display images with orientations that differ from the user's perception, leading to spatial confusion and non-intuitive operation.
Innovation Solution
An orientation adjustment method and device that automatically rotates displayed images based on pixel feature value comparisons between sequential image frames to align the image orientation with the user's intended direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the placement platform does not limit placement orientation to provide flexibility, then the device can accept items from any orientation, but the displayed image orientation becomes misaligned with user perception causing spatial confusion
Solution Approach 1:
The system captures sequential image frames, compares pixel feature values to detect orientation changes, and automatically rotates the displayed image to maintain alignment with user perception. This closed-loop feedback mechanism resolves the contradiction by dynamically adjusting the display based on detected orientation deviations.
Solution Approach 2:
The system changes the rotation angle parameter of the displayed image based on detected orientation differences between sequential frames. By dynamically adjusting this parameter, the system maintains orientation alignment while preserving placement flexibility.
2Ease of operation
If the system automatically rotates images to maintain orientation alignment, then user operation becomes intuitive, but additional image processing steps increase computational complexity
Solution Approach 1:
The system performs image rotation only when orientation changes are detected through pixel feature comparison, rather than continuously processing all images. This partial action approach maintains operational intuitiveness while reducing unnecessary computational overhead.
Solution Approach 2:
The system pre-processes images by extracting pixel feature values from specific judgment areas before comparison. This preliminary feature extraction simplifies subsequent orientation detection and rotation decisions, reducing overall processing complexity.
Data Source
AI summary
The present invention provides an orientation adjustment device and an orientation adjustment method of a displayed image. The orientation adjustment method includes the following steps. Step 1 is to capture a first image frame and a second image frame sequentially by an image capturing unit. Step 2 is to obtain a plurality of first pixel feature values near a first side in the first image frame. Step 3 is to obtain a plurality of second pixel feature values near the first side in the second image frame. Step 4 is to obtain a difference feature value according to the first pixel feature value and the second pixel feature value. Step 5 is to rotate the image frames output by the image capture unit so that the first side is corresponding to the predetermined display side if the difference feature value is greater than a threshold.