Integrated Projector Camera for Interactive Detection
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Solution Overview
Problem
Current display technologies, such as projectors used in game machines and media players, lack the ability to perform intuitive operations on projected images due to separate camera and projector setups, leading to calibration issues and non-interactive experiences, as they only offer image projection without touch detection or image recognition functions.
Innovation Solution
A display apparatus with integrated illumination units for image projection, position detection, and image recognition, utilizing a single device that projects images, detects positions, and recognizes objects on a projection plane using distinct illumination wavelengths, allowing for simultaneous image projection and interactive touch-like operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate camera and projector setups are used for image projection and detection, then image projection function is achieved, but calibration issues occur and interactive operations become difficult
Solution Approach 1:
The patent combines the projector and camera into a single integrated device, merging the image projection function and detection function into one unit. This eliminates the calibration issues between separate devices and enables direct interactive operations on the projected image, as the camera and projector share the same optical path and coordinate system.
Solution Approach 2:
The projector is designed to perform multiple functions: image projection, position detection, and image recognition. By integrating the camera within the projector body and sharing optical components, the device achieves multi-functionality, allowing users to interact with projected images through touch-like operations while maintaining accurate position detection.
2Adaptability or versatility
If multiple separate devices are used for image projection, position detection, and image recognition, then each function can be optimized independently, but device complexity increases and calibration becomes difficult
Solution Approach 1:
The patent merges image projection, position detection, and image recognition functions into a single integrated projector device. The camera is positioned within the projector body, and both devices share common optical components such as the projection lens, reducing overall system complexity while maintaining full functionality.
Solution Approach 2:
The projector is designed as a universal device that performs multiple functions: projecting images, detecting touch positions, and recognizing images. This multi-functionality is achieved by integrating the camera and sharing optical paths, allowing one device to replace what would traditionally require multiple separate devices.
3Measurement precision
If separate camera and projector are used, then each device can be optimized for its specific function, but the gap between projected and recognized images increases
Solution Approach 1:
By integrating the camera within the projector body and aligning their optical paths, the patent eliminates the spatial gap between projected and recognized images. The camera captures images from the same perspective as the projector displays them, ensuring accurate position detection and recognition without requiring complex calibration procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables intuitive and interactive operations on projected images by combining image projection, position detection, and image recognition within a single device, reducing calibration needs and enhancing user experience by eliminating the gap between projected and recognized images.
Implementation Method 1
an imaging device disposed at an optically conjugate position with the light valve
Data Source
AI summary
A display apparatus with detection function of the present disclosure includes a first illumination unit that outputs first illumination light, a light valve that generates image light by modulating the first illumination light on the basis of image data, a projection optical system that projects the image light onto a projection plane, a second illumination unit that outputs second illumination light used for position detection of a position detection object on the projection plane, a third illumination unit that outputs third illumination light used for image recognition of an image recognition object on the projection plane, an imaging unit where the second illumination light and the third illumination light enter through the projection optical system, and includes an imaging device disposed at an optically conjugate position with the light valve, and an image processing unit that performs position detection of the position detection object and image recognition of the image recognition object on the basis of a result of imaging by the imaging unit.