Projection method and projector
By projecting and photographing dot patterns in different display modes using a projector, and performing image correspondence and correction, the problem of low accuracy in dot pattern detection is solved, and high-precision image distortion correction is achieved.
CN116260949BActive Publication Date: 2026-06-02SEIKO EPSON CORP
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Patent Information
- Application Number
- CN202211562332.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-12-09
- Filing Date
- 2022-12-07
- Publication Date
- 2026-06-02
- Estimated Expiration
- 2042-12-07
AI Technical Summary
Technical Problem
In existing technologies, the detection accuracy of points contained in the projected dot pattern is not high, resulting in insufficient accuracy in image distortion correction.
Method used
The projector projects dot patterns with multiple different display modes, the camera captures and analyzes these dot patterns, the control unit performs image correspondence and correction, and generates correction data to correct image position offset.
Benefits of technology
It improves the detection accuracy of dot patterns, reduces the error in image distortion correction, and achieves higher precision image correction.
✦ Generated by Eureka AI based on patent content.
Abstract
Projection method and projector. Improve the detection accuracy of points included in a projected point pattern. A projector (1) projects a point pattern (210a) including a first point (231), a second point (232), a third point (233), a fourth point (234), and a black point (235) to a projection surface (7). The display modes of the first point (231), the second point (232), the third point (233), the fourth point (234), and the black point (235) are different from each other, the first point (231) is located adjacent to the second point (232) in a horizontal direction and adjacent to the third point (233) in a vertical direction, the second point (232) is located adjacent to the fourth point (234) in the vertical direction, and the third point (233) is located adjacent to the first point (231) in the horizontal direction.
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