Projection Device Body Detection Image Masking
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Solution Overview
Problem
Existing projectors face difficulties in maintaining visibility of projected images when a body, such as a hand, is between the projector and the projection surface due to the rough surface and lack of clear boundaries between the image and the body.
Innovation Solution
A projection device equipped with a body detection unit that identifies the presence of a body and processes the image to prevent it from being projected directly on the body, allowing the image to be projected in a way that it can be easily distinguished from the body, by cutting or tinting the image accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the projector projects the image directly on the projection surface, then the image can be displayed on the screen, but when a body (hand) is between the projector and the screen, the image becomes obscured and difficult to see on the body surface
Solution Approach 1:
The system performs preliminary detection of the body's presence and position before projecting the image. By detecting the hand's area in advance, the processor can pre-calculate the modified image that excludes the hand area, ensuring the image is prepared correctly before projection occurs, thus preventing obscuration issues
Solution Approach 2:
The system applies different processing to different areas of the projected image based on the detected body position. The hand area is identified as a special zone and excluded from the projected image content, while other areas remain unchanged. This local modification ensures the image is not projected on the body surface, maintaining visibility
2Adaptability or versatility
If the image is projected on the body surface, then the body can display the image, but the rough surface of the body (hand) makes the image difficult to see
Solution Approach 1:
The system extracts the hand area from the projection surface and excludes it from the projected image. By removing the hand region from the image data before projection, the system prevents the image from being displayed on the body surface, thereby eliminating the visibility problem caused by the rough body surface
Solution Approach 2:
The system introduces an intermediary processing step between the image source and the projection surface. This intermediary is the modified image data that has been processed to exclude body areas, acting as a mediator that prevents direct projection on the body while maintaining the ability to project on the screen
3Device complexity
If the image is projected without modification, then the projection process is simple, but the image cannot be distinguished from the body when projected on the body
Solution Approach 1:
The system performs preliminary detection and processing of the image data before projection. By pre-identifying the hand area and pre-modifying the image to exclude this area, the system achieves clear discrimination between the image and body without adding complexity during the projection process itself
Solution Approach 2:
The system uses feedback from the body detection to modify the image processing. The detected hand position and area provide feedback that triggers the image modification process, ensuring the image is adjusted appropriately based on the actual body presence while maintaining manageable processing complexity
Data Source
AI summary
According to an illustrative embodiment, an information processing apparatus is provided. The apparatus is used for processing a first image projected toward a target. The apparatus includes a processing unit for detecting that an object exists between a projector unit and the target, wherein when an object exists between the projector unit and the target, the apparatus determines an area of the object and generates a modified first image, based on the area of the object, for projection toward the target.