A Semi-fragile Watermarking Algorithm for Authenticating 2D Engineering Graphics Based on Log-Polar Transformation

Author(s):  
Fei Peng ◽  
Re-Si Guo ◽  
Chang-Tsun Li ◽  
Min Long
Author(s):  
Lyudmila Ivanovna Golovacheva ◽  
◽  
Raisya Abdrakhmanovna Maksutova ◽  
Natal'ya Aleksandrovna Fedoritenko ◽  
◽  
...  

1984 ◽  
Vol 14 (4) ◽  
pp. 95-102
Author(s):  
G. J. Burkland ◽  
P. Heidelberger ◽  
P. D. Welch ◽  
L. S.Y. Wu ◽  
M. Schatzoff

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 827
Author(s):  
José Ignacio Rojas-Sola

The study of graphic communication techniques that engineers, architects, and designers use to express ideas and concepts, or the graphic expression applied to the design process, is becoming increasingly important. The correct interpretation of graphic language allows the development of skills in the training of an engineer or architect. For this reason, research on this topic is especially valuable in finding improvements or new proposals that help toward a better understanding of those techniques. This Special Issue shows the reader some examples of different disciplines available, such as engineering graphics, industrial design, geometric modeling, computer-aided design, descriptive geometry, architectural graphics and computer animation.


2006 ◽  
Vol 38 (11) ◽  
pp. 1154-1165 ◽  
Author(s):  
Chang-Min Chou ◽  
Din-Chang Tseng

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