Projection Control Apparatus for Irregular Solid Surfaces
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Solution Overview
Problem
Conventional image projection systems fail to accurately project images on solid objects due to the inability to account for the uneven shape of the projection surface, leading to suboptimal image formation.
Innovation Solution
A control apparatus that includes a position acquiring unit, a projection information acquiring unit, and a controlling unit to identify the position and shape of the projection surface, allowing for the transformation and adjustment of the projected image to match the solid object's shape, ensuring accurate image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional projection systems project images without considering the shape of the solid screen, then the projection process is simple, but the image cannot be projected in the desired form on uneven surfaces
Solution Approach 1:
The system performs preliminary acquisition of shape information about the solid screen before projection. The shape information acquiring unit captures the three-dimensional shape data in advance, allowing the projection system to pre-calculate the necessary image transformations to compensate for surface irregularities, thereby achieving accurate projection on uneven surfaces without adding complex real-time adjustment mechanisms
Solution Approach 2:
The system creates a digital copy or model of the solid screen's shape through the shape information acquiring unit. This digital representation is then used to generate transformed projection images that account for the surface geometry, allowing accurate projection without physically modifying the projection system to match each unique surface shape
2Loss of information
If the projection system acquires only position and direction information of the solid screen, then the system is simpler, but it cannot acquire information on the solid shape of the projection surface
Solution Approach 1:
The shape information acquiring unit is designed to perform multiple functions: it not only captures the three-dimensional shape of the solid screen but also derives position and direction information from the same data. This multi-functional approach eliminates the need for separate sensors or systems for each type of information, reducing overall system complexity while comprehensively acquiring all necessary projection parameters
Solution Approach 2:
The patent introduces a control apparatus as an intermediary that processes shape information and generates transformed projection images. This intermediary component coordinates between the shape information acquiring unit and the projection unit, managing the complex data processing and transformation operations in a centralized manner that simplifies the overall system architecture
3Productivity
If the projection system does not consider the solid shape of the screen, then the projection process is faster, but the projected image does not match the desired form on irregular surfaces
Solution Approach 1:
The system performs image transformation calculations in advance based on pre-acquired shape information. By calculating the necessary geometric transformations before projection begins, the system prepares corrected image data that automatically compensates for surface irregularities, allowing fast projection execution without real-time shape analysis during the actual projection process
Solution Approach 2:
The projection system dynamically adapts to different solid screen shapes by using the acquired shape information to generate customized transformed images for each projection target. This dynamic adaptation allows the system to maintain high projection speed while accurately matching the desired image form to various irregular surfaces through software-based transformation rather than mechanical adjustment
Data Source
AI summary
A position acquiring unit acquires position information for identifying a position of a projection surface on which a first projecting unit projects an image. A projection information acquiring unit acquires projection information related to the projection performed by a second projecting unit. The controlling unit controls the first projecting unit to project an image on the projection surface based on the position information and the projection information.