Results 21 to 30 of about 8,544 (259)

Pengamanan Pesan pada Steganografi Citra dengan Teknik Penyisipan Spread Spectrum

open access: yesJurnal Elkomika, 2019
ABSTRAK Pada studi ini, dilakukan penggabungan metode - metode untuk memperkuat dan meningkatkan sisi keamanan proses pertukaran informasi atau pesan digital.
SOFIA SAIDAH   +2 more
doaj   +1 more source

METHOD OF REFERENCE SIGNALS CREATING IN NON-DESTRUCTIVE TESTING BASED ON LOW-SPEED IMPACT

open access: yesТехнічна електродинаміка, 2021
The article describes the approach to the formation of a simulation model of information signals, which are typical for objects with different types of defects.
В.С. Еременко   +2 more
doaj   +1 more source

DISCRETE COSINE TRANSFORM UNTUK IDENTIFIKASI CITRA HYLOCEREUS COSTARICENSIS

open access: yesSimetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer, 2015
ABSTRAK Pengolahan citra digital memiliki peranan sangat luas terhadap kehidupan sehari- hari. Salah satunya dapat digunakan untuk mengidentifikasi citra buah untuk mengetahui tingkat kematangan buah tersebut.
Resty Wulanningrum   +1 more
doaj   +1 more source

Three-dimensional nonrigid reconstruction based on probability model

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Most nonrigid motions use shape-based methods to solve the problem; however, the use of discrete cosine transform trajectory-based methods to solve the nonrigid motion problem is also very prominent.
Yaming Wang   +3 more
doaj   +1 more source

CHARACTERIZATION OF BREAST TISSUES IN COMBINED TRANSFORMS DOMAIN USING SUPPORT VECTOR MACHINES [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2011
Mammography is a well established imaging technique for showing tissue abnormalities of breast and has been proven to reduce death rate due to breast cancer in screened populations of women.
B.N. Prathibha, V. Sadasivam
doaj  

Discrete cosine transforms on quantum computers [PDF]

open access: yesISPA 2001. Proceedings of the 2nd International Symposium on Image and Signal Processing and Analysis. In conjunction with 23rd International Conference on Information Technology Interfaces (IEEE Cat. No.01EX480), 2002
A classical computer does not allow to calculate a discrete cosine transform on N points in less than linear time. This trivial lower bound is no longer valid for a computer that takes advantage of quantum mechanical superposition, entanglement, and interference principles.
Klappenecker, Andreas, Roetteler, Martin
openaire   +2 more sources

Directional Analytic Discrete Cosine Frames

open access: yesIEEE Access, 2022
Block frames called directional analytic discrete cosine frames (DADCFs) are proposed for sparse image representation. In contrast to conventional overlapped frames, the proposed DADCFs require a reduced amount of 1) computational complexity, 2) memory ...
Seisuke Kyochi   +2 more
doaj   +1 more source

Packaging of Macroscopic Material Payloads: Needs, Challenges, Concepts, and Future Directions

open access: yesAdvanced Engineering Materials, EarlyView.
This review introduces a unified framework that decomposes any macroscopic packaging system into the payload, packaging material, and packaging strategy and combines them into a conceptual packaging equation: packaging strategy = payload + packaging material.
Venkata S. R. Jampani, Manos Anyfantakis
wiley   +1 more source

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

open access: yesAdvanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky   +3 more
wiley   +1 more source

A Hybrid robust watermarking system based on discrete cosine transform, discrete wavelet transform, and singular value decomposition

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Digital data sharing is increased day by day due to the rapid access of the Internet by mass people. Multimedia, for example text, image, video, and audio can be easily accessed by unauthorized users.
Mahbuba Begum   +2 more
doaj   +1 more source

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