A Method for Movable Projector Keystone Correction
نویسندگان
چکیده
In this paper, we propose a hand-held mobile projection system that can freely project keystone free content on a general flat surface without any markings. Such a projection system can give the user great freedom of control of the display such as viewing angle and distance without suffering from distortion. We attach a camera to the projector to form a stereo pair. The correction of the display content is then achieved by rectifying the projection region of interest into a rectangular region and pre-warping the display content. Experimental results show that our system can continuously project distortion free content in real time with reasonable precision.
منابع مشابه
Self-Calibrating Camera Projector Systems for Interactive Displays and Presentations
The image generated by an off-center projector appears distorted (Figure 1, left). Using an uncalibrated camera pointed at the presentation screen, our system automatically recovers the projector-to-screen homography and pre-warps the computer output to produce a keystone-corrected image (Figure 1, right). This allows the presenter to place the microportable projector anywhere in the room witho...
متن کاملAutomatic Keystone Correction for Camera-assisted Presentation Interfaces
Projection systems have become the ubiquitious infrastructure for presentation technology. How-ever, unless the projector is precisely aligned to the presentation screen, the resulting image suffersfrom perspective (keystone) distortions requiring manual optical or digital correction. This tediousprocess must be repeated whenever the projector or screen is moved and is increasingly ...
متن کاملAutomaticKeystone Correction for Camera-Assisted Presentation Interfaces
Projection systems have become the ubiquitous infrastructure for presentation technology. However, unless the projector is precisely aligned to the presentation screen, the resulting image suffers from perspective (keystone) distortions requiring manual optical or digital correction. This tedious process must be repeated whenever the projector or screen is moved and is increasingly relevant giv...
متن کاملSlant-invariant Stagger Grid Pattern Projection with Error-tolerant Decoding Technique for One-shot Shape Measurement
We propose a pattern projection method for one-shot active 3D shape measurement to reconstruct movable or deformable scenes. In our method, just one projection pattern which has scene slant-invariant features is used to solve the correspondence between camera and projector pixel coordinates. Additionally, in order to correct correspondence in complex scenes which include discontinuous and overl...
متن کاملA New Nonlinear Distortion Correction Approach for Camera-Projector System
-This paper presents a new approach allowing a projector to display an undistorted image on an unknown geometry surface. In the distortion correction system, a single digital camera is used to capture the viewer’s perspective of the projection surface, and a computer is used to process the origional source image to show an undistortion image from the view position of audience. In the approach, ...
متن کامل