Multi-Aspect Image Trimming for Full-Screen Cross-Device Display
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Solution Overview
Problem
Existing display systems face inefficiencies when projecting images between devices with different aspect ratios, leading to wasted display regions due to black stripes when the digital micro-mirror device (DMD) cannot rotate 90 degrees, limiting the usable display area.
Innovation Solution
A display method and system that involves acquiring master images, setting regions based on aspect ratios, and trimming image portions to optimize display on devices with different aspect ratios, ensuring overlapping and non-overlapping regions are managed to maximize usable display space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the projector uses a DMD in normal use state without rotation mechanism, then the device complexity is reduced, but the display area is wasted due to black stripes when projecting vertical direction images
Solution Approach 1:
The patent transforms the problem from a spatial rotation dimension to an image processing dimension. Instead of rotating the DMD physically, the system processes the image data to generate multiple trimmed versions corresponding to different aspect ratios, effectively solving the aspect ratio mismatch problem through data transformation rather than mechanical transformation.
Solution Approach 2:
The patent divides the master image into multiple trimmed images with different aspect ratios. By segmenting the image content according to different aspect ratio requirements, the system can simultaneously serve multiple display devices with different orientations without requiring physical DMD rotation.
2Area of stationary object
If the DMD is rotated by 90 degrees to match vertical direction smartphone, then the display area is maximized, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent creates multiple copies of the master image with different aspect ratios through software processing. Instead of manufacturing multiple physical DMDs with different orientations or adding rotation mechanisms, the system generates digital copies of the image content that are optimized for each display device's aspect ratio.
3Loss of information
If a single master image is used for multiple display devices with different aspect ratios, then the information completeness is improved, but the display quality on each device deteriorates due to aspect ratio mismatch
Solution Approach 1:
The patent applies different quality optimizations to different parts of the image distribution system. Each display device receives a locally optimized trimmed image that matches its specific aspect ratio requirements, while the master image maintains complete information. This allows each device to display content with optimal quality for its dimensions.
Data Source
AI summary
A display method includes: acquiring a master image; acquiring a first aspect ratio of a first display screen of a first display device; setting a first region in a master region of the master image based on the first aspect ratio; displaying, on the first display screen, a first image obtained by trimming an image portion inside the first region in the master image; acquiring a second aspect ratio of a second display screen of a second display device different from the first display device; setting, in the master region, a second region having an overlapping region that overlaps the first region and a non-overlapping region that does not overlap the first region in at least one of a first direction and a second direction that are orthogonal to each other in the master region, based on the second aspect ratio; and displaying, on the second display screen, a second image obtained by trimming an image portion inside the second region in the master image.