Projection Position Guidance With Color-Adjusted Grid Points
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Solution Overview
Problem
Conventional projectors and image capturing devices require wired connection to an external computing device for adjustment, which is cumbersome, especially at high positions, and suffer from reduced accuracy due to insufficient pixel resolution in captured images.
Innovation Solution
A projection system where a projector projects positioning grid points, and an image capturing device captures these points, adjusting their color based on recognition criteria to guide user adjustments without external devices, using recognizable and unrecognizable grid points to indicate positional and directional corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wired connection to external computing device is used for adjustment, then adjustment functionality is achieved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent merges the external computing device functionality into the projector itself by integrating the image capturing device and processing unit. The projector directly captures images, processes them to identify grid points, and displays adjustment instructions on its own projection surface, eliminating the need for separate external devices and wired connections.
Solution Approach 2:
The projector performs self-adjustment by using its own projection output as the reference for image capture and analysis. The system captures images of the projected grid, processes the captured images to determine positional deviations, and displays adjustment instructions directly on the projection surface, enabling the device to guide its own positioning without external assistance.
2Measurement precision
If external computing device is used for image processing, then adjustment accuracy can be achieved, but ease of operation worsens due to setup complexity
Solution Approach 1:
The patent combines the image processing functionality directly within the projector unit. The processing unit is integrated into the projector, allowing it to receive captured images, identify grid points, calculate positional deviations, and generate adjustment instructions internally, thereby maintaining measurement precision while eliminating the need for external computing devices.
3Area of stationary object
If high position disposal is used for projector or image capturing device, then coverage area is improved, but ease of operation worsens due to connection difficulty
Solution Approach 1:
The projector at high positions performs self-adjustment by capturing images of its own projection, processing the images to identify grid points and calculate deviations, and displaying adjustment instructions directly on the projection surface. This eliminates the need for physical connection to external devices at difficult-to-reach high positions, maintaining full functionality while improving ease of operation.
4Device complexity
If pixel resolution of captured image is too low, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent enhances local quality by making the grid points visually distinct with different colors and patterns. The projection content includes grid points with specific visual characteristics that make them easily distinguishable even at lower resolutions, allowing accurate identification and measurement without requiring high pixel resolution or complex system components.
Data Source
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AI summary
A projection position guiding method adapted to a projection system is provided. The projection system includes a projection target, an image capturing device and a projector. The projection position guiding method includes: projecting a projection content onto the projection target by the projector to generate a projection image, the projection content includes multiple positioning grid points arranged at intervals; capturing the projection target by the image capturing device to generate a captured image, and the captured image includes at least part of the projection image; and determining whether the positioning grid points satisfy multiple recognizable conditions according to the projection image in the captured image, when it is determined that the positioning grid points include at least one unrecognizable grid point that does not satisfy at least one of the recognizable conditions, adjusting a color of the at least one unrecognizable grid point in the projection content.