Results 221 to 230 of about 838,139 (291)
Some of the next articles are maybe not open access.
Security of Digital Images Based on Stream Cipher and MDS Matrix
2021Stream ciphers are extensively used over a wide range of applications including security of digital data. In this paper, a method for securing different types of images (binary, gray scale, true color and index) based on stream cipher (RC4A) and MDS (Maximum Distance Separable) matrix is proposed.
Abdul Gaffar 0001 +2 more
openaire +2 more sources
Digital holographic three-dimensional Mueller matrix imaging
Applied Optics, 2015A digital holographic Mueller matrix imaging method is proposed. A Mueller matrix is obtained from Stokes vectors that are calculated from the complex amplitude of the two orthogonal polarized lights. The complex amplitude is obtained by digital holography.
Toshitaka, Kobata, Takanori, Nomura
openaire +2 more sources
Investigation on the potential of Mueller matrix imaging for digital staining
Journal of Biophotonics, 2015Digital staining based on Mueller matrix measurements and their derivatives was investigated. Mueller matrix imaging was performed at the microscopic level on gastric tissue sections. Full Mueller matrices (4 × 4) were reconstructed using recorded images, followed by the extraction of polarization parameters.
Wang, Wenfeng +5 more
openaire +4 more sources
Digital Image Coding By C-Matrix Transform †
IFAC Proceedings Volumes, 1983Abstract Digital image processing of NTSC Color TV images by C-Matrix transform (CMT) for bandwidth compression is investigated. The effectiveness of the CMT compared to the discrete cosine transform (DCT) for image coding is evaluated. This comparison is based on various quantitative criteria and implementation aspects.
R. Srinivasan, K.R. Rao
openaire +1 more source
, 2021
This paper investigates the torsion progressive damage and failure mechanism of two-dimensional (2D) braided carbon/epoxy composite tubes. Four kind of samples with four braiding angles, 30°, 45°, 55°, and 60°, are experimentally tested on the static ...
Yuan-Hui Gu +6 more
semanticscholar +1 more source
This paper investigates the torsion progressive damage and failure mechanism of two-dimensional (2D) braided carbon/epoxy composite tubes. Four kind of samples with four braiding angles, 30°, 45°, 55°, and 60°, are experimentally tested on the static ...
Yuan-Hui Gu +6 more
semanticscholar +1 more source
Mueller matrix imaging by use of digital holography
SPIE Proceedings, 2015A Mueller matrix imaging method by use of the characteristics of digital holography is proposed. In the proposed method, only two exposures are required to obtain the Mueller matrix. The Mueller matrix can be calculated from Stokes vectors. Stokes vectors can be obtained from two fully-complex amplitude distributions.
Takanori Nomura, Toshitaka Kobata
openaire +1 more source
Measurement, 2018
In this paper, the residual strength degradation was termed as the damage variable to evaluate the fatigue damage process of asphalt mixtures. A non-notched semi-circular bending (SCB) residual strength test with varying pre-loading cycles was designed ...
Jiwang Jiang +4 more
semanticscholar +1 more source
In this paper, the residual strength degradation was termed as the damage variable to evaluate the fatigue damage process of asphalt mixtures. A non-notched semi-circular bending (SCB) residual strength test with varying pre-loading cycles was designed ...
Jiwang Jiang +4 more
semanticscholar +1 more source
IEEE Transactions on Computers, 1976
Eklundh's fast matrix transposition algorithm for transposing a 2nX 2nmatrix is extended here to the general case where 2i( j ≥ 1) of its rows will fit into primary storage. The perpormance characteristics of the extension are described and subsuquently compared with those of Eklundh, and its use in a two-dimensional image filtering routine is ...
Richard E. Twogood, Michael P. Ekstrom
exaly +3 more sources
Eklundh's fast matrix transposition algorithm for transposing a 2nX 2nmatrix is extended here to the general case where 2i( j ≥ 1) of its rows will fit into primary storage. The perpormance characteristics of the extension are described and subsuquently compared with those of Eklundh, and its use in a two-dimensional image filtering routine is ...
Richard E. Twogood, Michael P. Ekstrom
exaly +3 more sources
Strain, 2019
The study presented in this paper aims to adapt and calibrate two strain measurement techniques used for textile reinforced cementitious matrix composites (TRCMCs): distributed optical fibres and 2D digital image correlation (DIC).
M. Saidi, Aron Gabor
semanticscholar +1 more source
The study presented in this paper aims to adapt and calibrate two strain measurement techniques used for textile reinforced cementitious matrix composites (TRCMCs): distributed optical fibres and 2D digital image correlation (DIC).
M. Saidi, Aron Gabor
semanticscholar +1 more source
Subpixel processing of digital images obtained with CCD matrix
2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE), 2015The methods of signal analysis of photosensitive array and related conventional methods of digital filtering of time series is essentially the same as those in other areas of science and technology. Subpixel processing are peculiar, perhaps, only the inverse filtering procedure, providing high resolution of single reflections with limited pixel size ...
Peter Kondratov +4 more
openaire +1 more source