A Correspondence Search Technique for Geometric Correction of Projected Images

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Geometric Correction of Projected Rectangular Pictures

This article discusses a method for blindly removing geometric distortions in taken images of rectangular planar patterns (such as maps, pictures, or posters) in the absence of any calibration information or explicit knowledge of the imaging device. Our approach removes lens distortion form single-view images. The method is based on Least-Square-Error (LSE) approximations and Hough transforms. ...

Geometric Correction for Projected Image on Patterned Screen

In recent years, projection device which has advanced its miniaturization and price reduction are attracted as display device against a backdrop of high needs for wide and high-definition screen. However, the expression of projector on non-special screen causes geometric problems of distorted expression caused by a surface shape of the screen and a positional relation among devices. To solve th...

Geometric Correction for Braille Document Images

Braille system has been used by the visually impaired people for reading.The shortage of Braille books has caused a need for conversion of Braille to text. This paper addresses the geometric correction of a Braille document images. Due to the standard measurement of the Braille cells, identification of Braille characters could be achieved by simple cell overlapping procedure. The standard measu...

Monitoring and Correction of Geometric Distortion in Projected Displays