Portable Display Orientation for Full Projection Image Capture
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Solution Overview
Problem
Existing portable terminals, such as smartphones, often capture projection images with difficulty when held vertically due to the mismatch between the display orientation and the horizontal projection image, making it challenging to capture the entire image within the imaging range.
Innovation Solution
A method and apparatus that control the display orientation to align with the short side of the portable device, allowing for image capturing that includes both the projection surface and projected image, using image correction techniques to adjust for distortion caused by surface shape or defined projection ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the portable terminal is held in a vertical orientation (long side along vertical direction), then the display is easier to operate in a conventional manner, but the entire projection image cannot be captured within the imaging range
Solution Approach 1:
The display orientation is dynamically changed from the conventional vertical orientation to a horizontal orientation (rotated 90 degrees) specifically during the projection image capture process. This dynamic adjustment allows the imaging range to match the horizontal projection image dimensions, enabling complete capture of the projection image while maintaining ease of operation through automatic orientation detection and adjustment.
2Manufacturing precision
If the portable terminal is held in a lateral orientation (long side along horizontal direction), then the entire projection image can be captured within the imaging range, but the display orientation becomes unconventional and harder to operate
Solution Approach 1:
The system automatically detects when projection image capture is needed and temporarily rotates the display to horizontal orientation, performs the capture, then returns to vertical orientation. This dynamic, temporary adjustment provides the imaging accuracy benefits of lateral orientation without requiring the user to permanently change their holding position, thus maintaining ease of operation.
Solution Approach 2:
The portable terminal automatically adjusts its display orientation based on the detected operation context (projection image capture). The system self-manages the orientation change without requiring manual user intervention to rotate the device, making the adjustment process transparent and maintaining ease of operation while achieving accurate imaging.
3Stability of the object's composition
If the display orientation remains fixed in the conventional vertical position, then the user interface is consistent and easy to use, but it creates a mismatch with the horizontal projection image dimensions
Solution Approach 1:
The display orientation is made dynamic rather than fixed, automatically adjusting between vertical and horizontal orientations based on the current operation context. During general use, the display remains vertical for consistency, but during projection image capture, it switches to horizontal to match the projection image dimensions, thereby resolving the mismatch while maintaining display consistency for other operations.
Data Source
AI summary
A display method according to an aspect of the present disclosure includes displaying a first image on a display of a portable information processing apparatus, the display having a long side and a short side; and displaying a second image in an orientation in which the second image is along the short side of the display, the second image being used to acquire, by image capturing, a captured image that includes a projection surface on which an image is projected from a projector and an image appearing on the projection surface by projecting the image from the projector.