Performance of global look-up table strategy in digital image correlation with cubic B-spline interpolation and bicubic interpolation

Pan, Zhiwei; Wei, Chen; Jiang, Zhenyu; Tang, Liqun; Liu, Yiping; Liu, Zejia

doi:10.1016/j.taml.2016.04.003

Cited by 25 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Interpolation algorithms are rapidly developed and applied in fundamental fields of image processing such as image correlation [10], medical image processing [11], detection and estimation [12], and edge interpolation [13]. Bicubic interpolation generates smoother than the other corresponding interpolation algorithms such as bilinear and nearest-neighbor.…”

Section: Bicubic Interpolationmentioning

confidence: 99%

Feature Image Watermarking Based on Bicubic Interpolation of Wavelet Coefficients Using CRT

Adi

Astuti

Subhiyakto

2017

CommIT (Communication and Information Technology) Journal

View full text Add to dashboard Cite

Abstract-The main objective of watermarking method is to improve the robustness and imperceptibility. This paper introduces an improved CRT watermarking method using absolute value of interpolated wavelet coefficients aiming to improve the imperceptibility and robustness. The standard CRT method embeds the watermark bits on the blocks of pixels evenly. Hence, it can significantly reduce the quality of watermarked images when the watermark lies on the homogeneous area. Otherwise, the proposed method is embedding the watermark bits on the heterogeneous area by sorting the absolute magnitude of wavelet coefficients descending. The wavelet coefficients are selected from high frequency wavelet sub band HH. This scheme is able to determine the appropriate embedding location in certain range of value. The watermark bits are then embedding on the selected pixel value using CRT scheme. The result shows that the average imperceptibility value the CRT is 0.9980 while the proposed method has average value of 0.9993. On robustness against compression, the proposed method achieves better result compared to the CRT with the average NC values of 0.7916 higher than the CRT value of 0.7530. These prove that the proposed method has better performance in term of imperceptibility and robustness against compression than the CRT method.

show abstract

Section: Bicubic Interpolationmentioning

confidence: 99%

Feature Image Watermarking Based on Bicubic Interpolation of Wavelet Coefficients Using CRT

Adi

Astuti

Subhiyakto

2017

CommIT (Communication and Information Technology) Journal

View full text Add to dashboard Cite

show abstract

“…The works of the authors [5][6][7][8][9][10][11][12][13] are devoted to the study of various signal constructions, in which methods are proposed for studying the characteristics of signals in the time-frequency domain, which make it possible to use them for existing signals. One of the methods for studying the characteristics of the signals proposed in [5] is the use of cross-correlation and autocorrelation functions, which allow us to estimate the efficiency of spectrum use.…”

Section: Introductionmentioning

confidence: 99%

“…The work [7] is devoted to the study of the channel performance extremum, in which the extremum is in accordance with the error probability criterion. The authors used spline functions in works [8][9][10][11][12][13][14][15][16][17][18], that can significantly improve the interpolation accuracy, while simplifying the procedure for mathematical calculations. Today it is difficult or even impossible to specify such a class of problems where the spline-interpolation methods would not find practical application.…”

Section: Introductionmentioning

confidence: 99%

“…A method of interpolation of the spectral characteristics of selective signals based on cubic splines was proposed by authors in works [8][9][10], that allows to synthesize new signal functions, the extreme properties of which improve the technical characteristics of network facilities. A comparative analysis of the possibility of using polynomial splines, B-splines and cubic splines for interpolation of signals was carried out in works [11][12] and the main advantages, methods and positions of interpolation are described in these works. However, the search for new methods of interpolation of spectral characteristics selective signal in the present conditions of the active technology is an urgent task.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Study of the Extremum of the Total Energy of the Selective Signals Constructed by Quadratic Splines

Strelkovskaya¹,

Solovskaya²,

Makoganiuk³

2018

Period. Polytech. Elec. Eng. Comp. Sci.

View full text Add to dashboard Cite

The development of mobile communication networks in the direction of 5G networks implies the use of the radio interface that is based on new signal-code structures, the choice of which will determine their further development and the ability of operators to provide innovative services. The use of quadratic splines for the synthesis of selective signals with a finite spectrum, free from intersymbol interference, is proposed. An analytical expression for the synthesized signal in the time and frequency domains is obtained. A study was made of the dependence of the total energy of a selective signal on the parameters of a quadratic spline, which is used to interpolate the spectral density in the transition region using the methods of differential calculus of functions of several variables. To study the extremum of the total energy of a selective signal, the parameters of the width of the transition area α was used and the coefficient of rounding the spectrum ρ, the variation of whose spectral density allowed us to establish the limits of the change in the total energy of the signal in question. Conducted studies allow us to synthesize the signal and formulate recommendations on how by changing the parameters of the signal, you can get a signal with the desired properties. This will allow to obtain the optimal waveform in accordance with the selected criteria, providing for the required energy performance of the signal in the radio interface of 5G networks. Keywordsselective signal, spectral density, the total energy of the signal

show abstract

“…The IC-GN algorithm [7], mathematically equivalent to the classic forward additive Newton-Raphson (FA-NR) algorithm [8], uses a smart alignment strategy during the iterative procedure, which makes it 3-5 times faster than the FA-NR algorithm [6], while keeping the high accuracy and resistance to noise [9][10][11]. In addition, the application of the precomputed global look-up table of interpolation coefficients [12,13] eliminates the repetitive calculation during the construction of the warped target subset in iterations and leads to a speed-up of another several times. Nevertheless, the iterative subpixel DIC with the aforementioned improvements achieves a speed of only thousands of points of interest per second (POI/s) [14,15], which is still far below the expectation.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous parallel computing accelerated iterative subpixel digital image correlation

Huang

Zhang

Jiang

et al. 2017

Sci. China Technol. Sci.

Self Cite

View full text Add to dashboard Cite

Parallel computing techniques have been introduced into digital image correlation (DIC) in recent years and leads to a surge in computation speed. The graphics processing unit (GPU)-based parallel computing demonstrated a surprising effect on accelerating the iterative subpixel DIC, compared with CPU-based parallel computing. In this paper, the performances of the two kinds of parallel computing techniques are compared for the previously proposed path-independent DIC method, in which the initial guess for the inverse compositional Gauss-Newton (IC-GN) algorithm at each point of interest (POI) is estimated through the fast Fourier transform-based cross-correlation (FFT-CC) algorithm. Based on the performance evaluation, a heterogeneous parallel computing (HPC) model is proposed with hybrid mode of parallelisms in order to combine the computing power of GPU and multicore CPU. A scheme of trial computation test is developed to optimize the configuration of the HPC model on a specific computer. The proposed HPC model shows excellent performance on a middle-end desktop computer for real-time subpixel DIC with high resolution of more than 10000 POIs per frame. digital image correlation (DIC), inverse compositional Gauss-Newton (IC-GN) algorithm, heterogeneous parallel computing, graphics processing unit (GPU), multicore CPU, real-time DIC

show abstract

Performance of global look-up table strategy in digital image correlation with cubic B-spline interpolation and bicubic interpolation

Cited by 25 publications

References 16 publications

Feature Image Watermarking Based on Bicubic Interpolation of Wavelet Coefficients Using CRT

Feature Image Watermarking Based on Bicubic Interpolation of Wavelet Coefficients Using CRT

A Study of the Extremum of the Total Energy of the Selective Signals Constructed by Quadratic Splines

Heterogeneous parallel computing accelerated iterative subpixel digital image correlation

Contact Info

Product

Resources

About