Projection System Foreground Object Masking
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Solution Overview
Problem
Current projection mapping technologies require specialized equipment and complex setup procedures, limiting their use to professional settings and preventing casual users from performing projection mapping at home or in non-traditional environments.
Innovation Solution
An electronic device communicatively coupled to a projection device, equipped with a camera, memory, and processor, which controls the projection device to project marked images, analyze images to identify foreground objects, and overlay selected patterns onto these objects for projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If professional projection mapping equipment and procedures are used, then projection mapping quality is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The patent applies universality by enabling a standard smartphone camera to perform multiple functions: capturing images, analyzing depth information, identifying foreground objects, and generating projection masks. This eliminates the need for specialized projection mapping equipment while maintaining functionality, as the smartphone integrates what were previously separate professional tools into a single consumer device.
Solution Approach 2:
The system applies self-service through automatic foreground object identification and mask generation. The camera captures the scene, the processor automatically analyzes depth information to distinguish foreground from background, and the system generates the projection mask without requiring professional setup companies or manual configuration, enabling users to perform projection mapping independently.
2Reliability
If professional setup companies and audio video production companies are involved, then projection mapping effectiveness is improved, but ease of operation deteriorates
Solution Approach 1:
The system enables users to perform projection mapping independently through automatic processing. The smartphone camera captures the scene, the processor automatically identifies foreground objects using depth information, and the system generates projection masks without requiring professional setup companies or audio-video production expertise, dramatically improving ease of operation while maintaining effectiveness.
Solution Approach 2:
The patent replaces manual professional setup procedures with automated computational processing. Instead of requiring professionals to manually configure equipment and edit audio-video content, the system uses the smartphone's processor to automatically analyze captured images, identify foreground objects, and generate projection masks through computational algorithms, substituting mechanical/manual processes with automated digital processing.
3Measurement precision
If depth information analysis is performed to identify foreground objects, then projection accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by capturing depth information simultaneously with the image capture. The depth map is obtained in advance during the image sampling process, allowing the processor to immediately use this pre-acquired depth information for foreground object identification without requiring additional processing time or separate measurement steps, thus maintaining accuracy while minimizing time loss.
Data Source
AI summary
An electronic device, projection system, and projection method are provided. The electronic device is communicatively coupled to the projection device. The electronic device includes a camera, a memory and a processor. The memory stores an application. The processor is coupled to the camera and the memory. The processor is configured to execute the following steps of the application: controlling the projection device to project a marked image having a plurality of predetermined marks to a target area; controlling the camera to take a first image of the target area, wherein the first image comprises a foreground object and a background object of the target area; analyzing the first image, to obtain a foreground contour corresponding to the foreground object; and overlaying a selected pattern onto the foreground contour to generate a second image, and controlling the projection device to project the second image to the target area.