scholarly journals An Efficient Image Distortion Correction Method for an X-ray Digital Tomosynthesis System

2005 ◽  
pp. 428-433
Author(s):  
J. Y. Kim
Keyword(s):  
Correction Method ◽  
Image Distortion ◽  
Distortion Correction ◽  
Digital Tomosynthesis ◽  
X Ray

Image Distortion Compensation by Using a Polynomial Model in an X-Ray Digital Tomosynthesis System

2005 ◽  
Vol 297-300 ◽  
pp. 2034-2039 ◽  
Author(s):  
J.Y. Kim ◽  
J.S. Yoon
Keyword(s):  
Flip Chip ◽  
Image Intensifier ◽  
Industrial Applications ◽  
Image Distortion ◽  
Polynomial Model ◽  
Digital Tomosynthesis ◽  
Cross Sectional ◽  
Distortion Compensation ◽  
X Ray ◽  
Cross Sectional Imaging

X-ray technology has been widely used in a number of industrial applications for monitoring and inspecting inner defects which can hardly be found by normal vision systems as a ball grid array (BGA) or a flip chip array (FCA). Digital tomosynthesis (DT) is one of the most useful X-ray cross-sectional imaging methods for PCB inspection, and it usually uses an X-ray image intensifier. However, the image intensifier distorts X-ray images severely both of shape and intensity. This distortion breaks the correspondences between those images and prevents us from acquiring accurate cross-section images. Therefore, image distortion compensation is one of the most important issues in realizing a DT system. In this paper, an image distortion compensation method for an X-ray DT system is presented. It is to use a general distortion polynomial model on two dimensional plane that can cope with arbitrary, complex and various forms of distortion. Experimental results show a great improvement in compensation speed and accuracy.

Researches on Image Distortion Correction Method Based on Image Magnification

2013 ◽  
Vol 650 ◽  
pp. 548-552
Author(s):  
Xiao Ying Jiang ◽  
Jian Liang Xu ◽  
Xiao Feng Fang ◽  
Xin Xing Zhang ◽  
Yin Ling Peng ◽  
...  
Keyword(s):  
Simple Algorithm ◽  
Correction Method ◽  
Image Distortion ◽  
Distortion Correction ◽  
New Method ◽  
Distorted Image ◽  
Image Magnification ◽  
Linear Operation ◽  
The Relationship ◽  
Computing Speed

A new method to correct a distorted image is proposed in this paper, which is based on the relationship between image magnification and distortion coefficient. First, the image magnification is solved. Then, the image distorted coefficient can be obtained with simple linear operation. Ultimately, experiments are carried out, and the correction results obtained by the collinear points-based method are compared with the method proposed in this paper. The results show that both provide good correction effects. At the same time, the accuracy of the new proposed method is higher. The proposed method takes the advantages of simple algorithm, few known conditions and fast computing speed. The new method has great significance in engineering metrology and complex condition.

New document image distortion correction method

2011 ◽  
Vol 30 (12) ◽  
pp. 3317-3320 ◽  
Author(s):  
Li-li SONG ◽  
Ya-dong WU ◽  
Bo SUN
Keyword(s):  
Correction Method ◽  
Image Distortion ◽  
Document Image ◽  
Distortion Correction
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