Projection Apparatus Support Image for Geometric Processing

The patent introduces a support image as an intermediary visual element that mediates between the geometric processing operations and the user. The support image is projected in the non-display region and provides visual feedback about the displayable region boundaries, enabling users to perform geometric processing operations with visual guidance. This resolves the contradiction by adding an intermediary layer that provides necessary visual information without interfering with the actual projection content.

The patent projects the support image in advance before geometric processing operations are performed. The support image预先 shows the displayable region boundaries and other reference information, allowing users to plan and execute geometric processing operations with full awareness of the available space. This preliminary visual preparation improves ease of operation while maintaining processing flexibility.

The patent applies local quality by selectively displaying different portions of the displayable region in the support image based on the specific geometric processing operation being performed. Instead of always showing the entire displayable region, the system adapts the support image content to show only the relevant portions needed for the current operation, thereby reducing information loss while maintaining operational ease.

The patent implements partial action by projecting only the necessary portion of the displayable region as support image rather than the entire region. The support image displays exactly what is needed for the geometric processing operation (e.g., boundaries, reference markers) without unnecessarily projecting excessive information that would compete with the projection image content.