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Sandra L. Gomez-Coronel, Ernesto Moya-Albor, Jorge Brieva and Andrés Romero-Arellano
Currently, algorithms to embed watermarks into digital images are increasing exponentially, for example in image copyright protection. However, when a watermarking algorithm is applied, the preservation of the image?s quality is of utmost importance, for...
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Ching-Shoei Chiang, Hung-Chieh Li
Pág. 126 - 134
Computer aided geometric design employs mathematical and computational methods for describing geometric objects, such as curves, areas in two dimensions (2D) and surfaces, and solids in 3D. An area can be represented using its boundary curves, and a soli...
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Ching-Shoei Chiang
Pág. 08 - 12
The design of curves, surfaces, and solids are important in computer aided geometric design (CAGD). Images, surround by boundary curves, are also investigated by many researchers. One way to describe an image is using the medial axis transform. Under thi...
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Jorge Brieva, Hiram Ponce and Ernesto Moya-Albor
The monitoring of respiratory rate is a relevant factor in medical applications and day-to-day activities. Contact sensors have been used mostly as a direct solution and they have shown their effectiveness, but with some disadvantages for example in vuln...
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Hua-Zhen Zhang, Dong-Won Kim, Tae-Koo Kang and Myo-Taeg Lim
We propose a local feature descriptor based on moment. Although conventional scale invariant feature transform (SIFT)-based algorithms generally use difference of Gaussian (DoG) for feature extraction, they remain sensitive to more complicated deformatio...
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Yun Xu, Jingbo Sun, Jesse Frantz, Mikhail I. Shalaev, Wiktor Walasik, Apra Pandey, Jason D. Myers, Robel Y. Bekele, Alexander Tsukernik, Jasbinder S. Sanghera and Natalia M. Litchinitser
Orbital angular momentum (OAM) beams may create a new paradigm for the future classical and quantum communication systems. A majority of existing OAM beam converters are bulky, slow, and cannot withstand high powers. Here, we design and experimentally de...
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