scholarly journals Digital Imaging Analysis with Fractal Dimension in Oral Leukoplakia

2017 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
CH Reddy ◽  
M Anitha ◽  
A Feroz ◽  
L Chandrashekar ◽  
R Sudarshan ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Digital Imaging ◽  
Oral Leukoplakia ◽  
Imaging Analysis

scholarly journals Application of Texture and Fractal Dimension Analysis to Estimate Effectiveness of Oral Leukoplakia Treatment Using an Er:YAG Laser—A Prospective Study

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3614
Author(s):  
Kamil Jurczyszyn ◽  
Marcin Kozakiewicz
Keyword(s):  
Fractal Dimension ◽  
Er:Yag Laser ◽  
Treatment Method ◽  
Oral Leukoplakia ◽  
Discrete Wavelet ◽  
Dimension Analysis ◽  
Short Run ◽  
Fractal Dimension Analysis ◽  
Occurrence Matrix ◽  
A Prospective Study

Background: Oral leukoplakia (OL) is a potential neoplasmic lesion. The aim of this study was to apply texture analysis (TA) and fractal dimension analysis (FDA) to estimate the effectiveness of OL treatment using an Er:YAG laser. Methods: Eighteen patients with 32 lesions were treated. Laser procedures were conducted using the LiteTouch™ Er:YAG Dental Laser. The diameter of the operational tip was 1.3 mm, the power was 50 mJ, the frequency was 50 Hz, and the wavelength was 2940 nm. TA was based on long and short-run emphasis inverse moments, difference entropy, inverse difference moment, and wavelet decomposition for two-dimensional photography. FDA was measured using the box-counting method. Results: Total response was achieved in 50% of lesions, partial response was observed in 47%, and 3% of lesions did not respond to treatment. Recurrence occurred in 34% of lesions. TA features indicated pathological images depicting leukoplakia and complete reconstruction of the correct mucosal image after laser ablation. The discrete wavelet transformation feature detects much larger structures than the properties derived from the run-length matrix and co-occurrence matrix. Conclusions: The Er:YAG laser is an effective treatment method in cases of oral leukoplakia. Leukoplakia treatment by Er:YAG laser is an effective modality, as revealed by the oral mucosa microstructure. TA and FDA are promising methods to estimate the effectiveness of OL treatment.

scholarly journals Genome-wide association for grain morphology in synthetic hexaploid wheats using digital imaging analysis

2014 ◽  
Vol 14 (1) ◽  
pp. 128 ◽  
Author(s):  
Awais Rasheed ◽  
Xianchun Xia ◽  
Francis Ogbonnaya ◽  
Tariq Mahmood ◽  
Zongwen Zhang ◽  
...  
Keyword(s):  
Digital Imaging ◽  
Grain Morphology ◽  
Genome Wide Association ◽  
Imaging Analysis ◽  
Genome Wide ◽  
Synthetic Hexaploid Wheats ◽  
Synthetic Hexaploid

High-speed digital imaging laryngoscopy of the neoglottis following supracricoid laryngectomy with cricohyoidoepiglottopexy

2010 ◽  
Vol 124 (11) ◽  
pp. 1234-1238 ◽  
Author(s):  
S Hayashi ◽  
H Hirose ◽  
N Tayama ◽  
H Imagawa ◽  
M Nakayama ◽  
...  
Keyword(s):  
Fundamental Frequency ◽  
Sound Source ◽  
Digital Imaging ◽  
High Speed ◽  
Imaging System ◽  
Vocal Performance ◽  
Inverse Filtering ◽  
Imaging Analysis ◽  
Supracricoid Laryngectomy ◽  
Digital Imaging System

AbstractObjectives:This study aimed to analyse vocal performance and to investigate the nature of the neoglottal sound source in patients who had undergone supracricoid laryngectomy with cricohyoidoepiglottopexy, using a high-speed digital imaging system.Methods:High-speed digital imaging analysis of neoglottal kinetics was performed in two patients who had undergone supracricoid laryngectomy with cricohyoidoepiglottopexy; laryngotopography, inverse filtering analysis and multiline kymography were also undertaken.Results:In case one, laryngotopography demonstrated two vibrating areas: one matched with the primary (i.e. fundamental) frequency (75 Hz) and the other with the secondary frequency (150 Hz) at the neoglottis. In case two, laryngotopography showed two vibrating areas matched with the fundamental frequency (172 Hz) at the neoglottis. The interaction between the two areas was considered to be the sound source in both patients. The waveform of the estimated volume flow at the neoglottis, obtained by inverse filtering analysis, corresponded well to the neoglottal vibration patterns derived by multiline kymography. These findings indicated that the specific sites identified at the neoglottis by the present method were likely to be the sound source in each patient.Conclusions:High-speed digital imaging analysis is effective in locating the sites responsible for voice production in patients who have undergone supracricoid laryngectomy with cricohyoidoepiglottopexy. This is the first study to clearly identify the neoglottal sound source in such patients, using a high-speed digital imaging system.

scholarly journals DIGITAL IMAGING ANALYSIS OF THE PLACENTA

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Vesna Ljubojević
Keyword(s):  
Image Analysis ◽  
Umbilical Cord ◽  
Digital Image ◽  
Digital Imaging ◽  
Digital Image Analysis ◽  
Average Distance ◽  
Insertion Site ◽  
Screening Method ◽  
Morphometric Parameters ◽  
Imaging Analysis

Recent studies indicate that placental and umbilical cord morphometry are the factors that may be associated with pregnancy complications, such as fetal growth restriction. Recently, placental and umbilical cord morphometry have been performed using digital image analysis. The aim of this study was to determine the morphometric parameters of placentas using digital image analysis. Material and methods: The digital imaging analysis of twenty placentas and umbilical cord were performed using Image Analysis LAS V4.3 software. Results: The length of the placentas was 191,77 mm ± 35,86 mm (mean ± standard deviation). The width of the placentas was 166,01 mm ± 19,01 mm. The placental surface area was 24495,13 mm2 ± 7038,86 mm2. The insertion of the umbilical cord to the placenta was central in 50 %, peripheral in 37,50 % and marginal in 12,5 % of analyzed placentas. The average distance of the umbilical cord insertion from the nearest placental margin was 38,89 mm ± 28,39 mm. The umbilical cord diameter at the insertion site was 21,16 mm± 5.69 mm. The diameter of the umbilical cord two centimeters from the insertion site was 12,36 mm ± 3,45 mm. Conclusion: Digital image analysis enables obtaining the objective morphometric parameters of the placenta and umbilical cord. The obtained morphometric parameters of the placenta and umbilical cord for our population are comparable to results of previous studies and open further placental research directions for the development of the screening method.

Thermal properties evaluation of granitoid rocks by using Digital Imaging Analysis (DIA) and 2D modelling simulation

2021 ◽  
Author(s):  
Raffaele Sassi ◽  
Chiara Coletti ◽  
Alessandro Borghi ◽  
Roberto Cossio ◽  
Maria Chiara Dalconi ◽  
...  
Keyword(s):  
Grain Size ◽  
Thermal Properties ◽  
Numerical Modelling ◽  
Phase Analysis ◽  
Digital Imaging ◽  
Rietveld Method ◽  
Quantitative Phase Analysis ◽  
Imaging Analysis ◽  
Quantitative Phase ◽  
Granitoid Rocks

<p>Seven granitoid rocks were selected due to the well-defined mineralogical content, the typical the holocrystalline texture, their absent (or very poor) Crystal Preferred Orientations (CPOs), and very-low porosity in order to apply a predictive approach that quantifies and simulates the rock thermal properties by considering the contributions of the mineral phases content. For this purpose, thermal properties of granodiorite, tonalite, granite, and gabbro rock samples were analysed and compared by <em>(i) </em>direct measurements on the bulk rock samples, <em>(ii)</em> by applying Quantitative Phase Analysis (QPA) on Digital Imaging Analysis (DIA) and Xray diffraction Rietveld method, and <em>(iii)</em> by 2D numerical modelling.</p><p>The results confirm the good accuracy of DIA-QPA method by the good according with data refined by X-Ray diffraction Rietveld method, and indicate the potential reliability of the more attractive approach in terms of prediction of the 2D modelling starting by the Quantitative Phase Analysis (QPA) based on Digital Imaging Analyses (DIA). This method, indeed, permits to observe concurrently different mineralogical and textural parameters (such as mineral abundance, grain size and grain size distribution), and it also provides a deep knowledge of the rock’s thermal behaviour.</p><p>Numerical modelling results indicate that a steady-state condition (SSC) is reached by the combination of thermal contribution given both in terms of modal mineral abundance (mainly controlled by mineralogical phase content related to the quartz occurrence) and in terms of rock texture (by the grain-size dimensions and the geometrical distribution of minerals), considering negligible the porosity.</p><p>The use of predictive models for the evaluation of the rocks thermal properties can find many important applications (e.g., in deep and shallow geothermal systems, as well as in building construction materials), and also permits to evaluate the expected energy performance of borehole heat exchange probes, involving granitoid lithologies, representing a suitable alternative also in cases where direct measures are not possible.</p>

A statistical method for the relative comparison of automotive paint colours using digital imaging analysis

2011 ◽  
Vol 225 (11) ◽  
pp. 2088-2095
Author(s):  
C M Seubert ◽  
M E Nichols ◽  
K Ellwood
Keyword(s):  
Statistical Method ◽  
Digital Imaging ◽  
Imaging Techniques ◽  
Prediction Intervals ◽  
Imaging Analysis ◽  
Automotive Paint ◽  
Control Limits

Relative colour comparisons were performed using digital imaging techniques and analysis. A statistical method was used to quantify how well a test colour matched a colour standard. Colour histogram comparisons were performed by incorporating a combination of control limits (based on prediction intervals) and threshold limits that were calculated for each curve set. Test colours were imaged and compared to colour standards by calculating the per cent match for each of the RGB curves. Colours that did not show a per cent match of 60 per cent or greater in all three colour curves were considered failures. Some colour families, e.g. reds, required larger control limits to account for colour variability.

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