3. MRI Images and Deformation Correction Techniques

2020 ◽  
Vol 76 (7) ◽  
pp. 749-754
Author(s):  
Takashi Itahashi
Author(s):  
YUNG-SHENG CHEN ◽  
KUN-LI LIN

Perception of content displayed on the screen of a computer display using computer vision is a challenging topic if the treated target is changed from physical world to digital world. Screen area from the given computer display image should be segmented and corrected primarily before perceiving the content displayed on the screen. An automatic approach is proposed to the segmentation and deformation correction of screen area for a computer display image. Due to some inherent characteristics existing on ordinary computer displays, the segmentation can be performed by contour tracing. After contouring the screen area, its four corner locations can be readily identified. By approximating the obtained corners to the closest normal screen region, the deformed screen image can be further restored with affine transformation. As a computer vision application on the "look at" screen image, the effectively segmented screen region can be fixed after a little time. The experiments demonstrate that about 70% cases can be fixed under 33 processed frames, others under 51 processed frames, and thus confirm the feasibility of the proposed approach.


2013 ◽  
Vol 42 (3) ◽  
pp. 613-618 ◽  
Author(s):  
Piotr Morasiewicz ◽  
Jarosław Filipiak ◽  
Krzysztof Krysztoforski ◽  
Szymon Dragan

Author(s):  
Marija Avota ◽  
Anita Raciborska ◽  
Andrejs Avots

Foot problems of female medical personnel: Subjective complaints and results of the podometric test The research was carried out in a multi-profile clinic where female medical workers included nurses, doctors and nurse assistants. The number of respondents included in the data analysis of this research was 102. A standardised questionnaire was used to obtain data on age group, position, body mass index, physical activities, ergonomic factors at work, performed objective foot examination methods, awareness of the ways of feet deformation correction. A computerised foot diagnostic system Pad Professional was used to objectively assess the feet condition. The podometric examination was carried out on 78 respondents. The data indicated a widespread foot problem spread among medical workers. Of 102 respondents only 10 (4.2%) had no complaints, and of 78 respondents who underwent the podometric test, none were diagnosed as having a totally healthy foot. The podometric examination showed that 65 (83.3%), which was the vast majority of respondents, had transverse arch flattening. Explicit transverse arch flattening was diagnosed in 8 (10.3%) and longitudinal arch flattening in 5 (6.4%) respondents.


2011 ◽  
Vol 291-294 ◽  
pp. 1217-1222
Author(s):  
Ji Ping Zhang ◽  
Guang Wei Wang

Flame deformation correction is the main means for correcting welding deformation of thin plate, and the temperature field simulation is an important component during the flame deformation correction calculation, which will directly determine the calculation accuracy and complexity. In order to simplify the calculation, firstly, the temperature field calculation is divided into three separate processes, secondly each process id divided into heating step, heat conduction step and heat exchanging step, and mathematical models of the three processes are established through dispersing in time and space. Experiments show that this method not only can simplify the calculation, but also is with high calculation accuracy, so it is with important application value.


1992 ◽  
Vol 58 (2) ◽  
pp. 253-258 ◽  
Author(s):  
Junji Sone ◽  
Katsunobu Ueda ◽  
Yoshinori Kairiku

2009 ◽  
Author(s):  
Masahiro Watanabe ◽  
Shuichi Baba ◽  
Toshihiko Nakata ◽  
Hiroshi Itoh ◽  
Takafumi Morimoto ◽  
...  

2010 ◽  
Vol 57 (1) ◽  
pp. 214-224 ◽  
Author(s):  
Songxiang Gu ◽  
Joseph E. McNamara ◽  
Joyeeta Mitra ◽  
Howard C. Gifford ◽  
Karen Johnson ◽  
...  

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