Results 41 to 50 of about 1,435,821 (287)

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

3D multiresolution statistical approaches for accelerated medical image and volume segmentation [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Medical volume segmentation got the attraction of many researchers; therefore, many techniques have been implemented in terms of medical imaging including ...
Alzubi, S
core   +4 more sources

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  

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

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

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

Frequency cosine transform: A bridge between gradient based frequency transform and discrete cosine transform

open access: yes, 2007
Discrete cosine transform(DCT) is one of the most powerful tools in image processing. In this paper, we show that each basis of the two dimensional discrete cosine transform(2D-DCT) is an 'eigenvector' of the frequency matrix which is used to ...
Gu, Suicheng   +5 more
core   +1 more source

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