Image Analysis & Stereology最新文献_第2页

Estimating the Parameters of a Stochastic Geometrical Model for Multiphase Flow Images Using Local Measures 基于局部测度的多相流图像随机几何模型参数估计

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-12-15 DOI: 10.5566/ias.2638

L. Théodon, T. Eremina, Kassem Dia, F. Lamadie, J. Pinoli, J. Debayle

引用次数: 2

Morphological Assessments of Root Apex of Permanent Mandibular First and Second Premolars in a Turkish Population 土耳其人恒下颌第一和第二前磨牙根尖的形态学评价

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-12-15 DOI: 10.5566/ias.2577

F. Babayeva, E. O. Orhan, O. Irmak

{"title":"Morphological Assessments of Root Apex of Permanent Mandibular First and Second Premolars in a Turkish Population","authors":"F. Babayeva, E. O. Orhan, O. Irmak","doi":"10.5566/ias.2577","DOIUrl":"https://doi.org/10.5566/ias.2577","url":null,"abstract":"There is no apical morphological data being available for mandibular first or second premolars in the Turkish population. The aims of the study were (I) to assess apical morphological data of mandibular first and second premolars in a Turkish population at a young-adult age range (II) to analyze potential correlations between the size and position of the apical foramina (AF). Extracted sound teeth were collected from an adult volunteer population as willing to donate. Morphological data were obtained from specimens using a stereomicroscope. The number, size, shape, and position of AF and frequency of accessory foramina were quantified. Mann-Whitney U and Spearman's rank correlation tests were performed (α=0.05). A total of 237 teeth were investigated. The majority of the specimens had one major AF. The frequency of major AF was between 1–3 for both groups. The median AF size in mandibular first and second premolars were 55,180 µm2 and 67,483 µm2, respectively. The majority of foramina shape was irregular for the mandibular first premolars whereas, was oval for the second premolars. The median location of AF with respect to the anatomic apex was 664 µm in mandibular first premolars and 677 µm in mandibular second premolars. The size and location of AF mostly overlap between the mandibular first and second premolars. The shape of the AF might be the only relevant variation concerning the apical morphology between the mandibular first and second premolars in young adults. The interaction between the size and location of AF in mandibular premolars of young adults seems not significant","PeriodicalId":49062,"journal":{"name":"Image Analysis & Stereology","volume":"14 12 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80196189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of Structural Characteristics of Ancient Bricks With Neutron Radiography Facility at BTRR 用中子射线照相设备研究BTRR古砖的结构特征

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-12-15 DOI: 10.5566/ias.2593

Robin Barman, Sudipta Saha, Md. Sayed Hossain, Anik Das, Md. Kaosar Ahmmad Rabby, A. Mahmud, Debasish Chowdhury

{"title":"Study of Structural Characteristics of Ancient Bricks With Neutron Radiography Facility at BTRR","authors":"Robin Barman, Sudipta Saha, Md. Sayed Hossain, Anik Das, Md. Kaosar Ahmmad Rabby, A. Mahmud, Debasish Chowdhury","doi":"10.5566/ias.2593","DOIUrl":"https://doi.org/10.5566/ias.2593","url":null,"abstract":"Neutron radiography (NR) has been applied successfully to investigate different types of building materials, rock samples, sculptures, statues or monuments for since long. The utilization of neutron imaging for non-invasive investigations of cultural heritage objects is demonstrated on the example of ancient bricks found in Mahasthangarh and Sonargaon, two key archaeological sites in Bangladesh. The visualization of the internal structure of different brick samples, by means of Neutron Radiography (NR), has been experimented using the BTRR research reactor in Bangladesh - the only neutron imaging facility available in Bangladesh for R D purposes. Manufacturing building materials have become a very good option for business in developing countries like Bangladesh. Among the non-destructive testing (NDT) techniques, neutron radiography is the most common procedure to identify light and organic materials, homogeneity, any inclusion or voids or cracks etc. inside the structure. The radiographic images in a dry condition for individual samples have been investigated. The image analysis was performed using ImageJ software and texture features were extracted using gray level co-occurrence matrix implemented by MATLAB for acquiring qualitative and quantitative information from this inspection technique at a high level of accuracy. The results obtained by neutron imaging provide the statement that the brick sample from Mahasthangarh is more homogeneous inside.","PeriodicalId":49062,"journal":{"name":"Image Analysis & Stereology","volume":"7 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75216159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local Measures Distribution for the Estimation of the Elongation Ratio of the Typical Grain in Homogeneous Boolean Models 齐次布尔模型中典型晶粒伸长率估计的局部测度分布

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/IAS.2554

T. Eremina, J. Debayle, F. Gruy, J. Pinoli

引用次数: 1

Multidimensional characterisation of time-dependent image data: A case study for the peripheral nervous system in ageing mice 时间相关图像数据的多维特征:衰老小鼠周围神经系统的案例研究

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/ias.2499

Matthias Weber, T. Wilhelm, Volker Schmidt

引用次数: 0

A Novel Texture Descriptor: Circular Parts Local Binary Pattern 一种新的纹理描述符:圆形零件局部二值模式

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/IAS.2580

Ibtissam Al Saidi, M. Rziza, J. Debayle

{"title":"A Novel Texture Descriptor: Circular Parts Local Binary Pattern","authors":"Ibtissam Al Saidi, M. Rziza, J. Debayle","doi":"10.5566/IAS.2580","DOIUrl":"https://doi.org/10.5566/IAS.2580","url":null,"abstract":"Local Binary Pattern (LBP) are considered as a classical descriptor for texture analysis, it has mostly been used in pattern recognition and computer vision applications. However, the LBP gets information from a restricted number of local neighbors which is not enough to describe texture information, and the other descriptors that get a large number of local neighbors suffer from a large dimensionality and consume much time. In this regard, we propose a novel descriptor for texture classification known as Circular Parts Local Binary Pattern (CPLBP) which is designed to enhance LBP by extending the area of neighborhood from one to a region of neighbors using polar coordinates that permit to capture more discriminating relationships that exists amongst the pixels in the local neighborhood which increase efficiency in extracting features. Firstly, the circle is divided into regions with a specific radius and angle. After that, we calculate the average gray-level value of each part. Finally, the value of the center pixel is compared with these average values. The relevance of the proposed idea is validate in databases Outex 10 and 12. A complete evaluation on benchmark data sets reveals CPLBP's high performance. CPLBP generates the score of 99.95 with SVM classification.","PeriodicalId":49062,"journal":{"name":"Image Analysis & Stereology","volume":"20 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85520953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Personal Reflections on the Life of Hans Jørgen Gottlieb Gundersen 汉斯·约翰·戈特利布·冈德森的个人人生反思

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/ias.2596

J. Bertram, L. Cruz-Orive, S. M. Evans, D. Hyde, T. Mayhew, Matthias Ochs, Yong Tang, J. Nyengaard

引用次数: 1

SIMULATION OF LARGE AGGREGATE PARTICLES SYSTEM WITH A NEW MORPHOLOGICAL MODEL 用一种新的形态模型模拟大聚集体颗粒系统

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/IAS.2488

M. Moreaud, Giulia Ferri, S. Humbert, M. Digne, J. Schweitzer

{"title":"SIMULATION OF LARGE AGGREGATE PARTICLES SYSTEM WITH A NEW MORPHOLOGICAL MODEL","authors":"M. Moreaud, Giulia Ferri, S. Humbert, M. Digne, J. Schweitzer","doi":"10.5566/IAS.2488","DOIUrl":"https://doi.org/10.5566/IAS.2488","url":null,"abstract":"For the development of a new porous material such as catalytic carrier, the control of the textural properties is of fundamental importance. In order to move towards rational synthesis, it is necessary to better understand the physical phenomena that generate a defined solid structure. A contribute to this purpose can be achieved by studying the aggregation process inside colloidal suspensions, leading to porosity generation: this phenomenon can be described with a Brownian dynamics model that, for any set of chemical parameters, gives access to the mass distribution and the fractal dimension of colloidal aggregates. However, this model cannot be used for the simulation of large colloidal systems, due to its high computational time, limiting comparison with analytical methods, which probe the whole multi-scale system. This problem is solved by developing a new aggregation morphological model, wherein the fractal dimension is tuned with two compactness parameters. An efficient simulation algorithm is proposed in case of spheres, for which the fractal dimension of the generated aggregates varies between 1.2 and 3. Brownian dynamics results are used to parametrize this purely geometric model, in order to constrain the size and the morphology of the aggregates created. The large numerical solid will be representative of the textural properties of a real solid and will give more information on the porous network. It could be used, for example, to simulate diffusive transport coupled with chemical reaction and to study the impact of the geometry of the porous system on the catalytic performance.","PeriodicalId":49062,"journal":{"name":"Image Analysis & Stereology","volume":"2 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83035400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

QUANTIFICATION OF THE INTERVENTIONAL APPROACHES INTO THE PTERYGOPALATINE FOSSA BY SOLID ANGLES USING VIRTUAL REALITY 利用虚拟现实技术对翼腭窝立体角介入入路进行量化

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-07-09 DOI: 10.5566/ias.2581

A. Jerman, J. Janáček, Ž. Snoj, N. Umek

{"title":"QUANTIFICATION OF THE INTERVENTIONAL APPROACHES INTO THE PTERYGOPALATINE FOSSA BY SOLID ANGLES USING VIRTUAL REALITY","authors":"A. Jerman, J. Janáček, Ž. Snoj, N. Umek","doi":"10.5566/ias.2581","DOIUrl":"https://doi.org/10.5566/ias.2581","url":null,"abstract":"Virtual reality is increasingly used in medicine for diagnostics, for visualisation of complex structures and for preoperative planning. In interventional radiology, minimally invasive approach could be described with a target point representing the desired needle tip position and an array of all possible trajectories leading to it resembling irregular “cone” or “pyramid”. We present a pilot study of planning a minimally invasive posterior infrazygomatic and suprazygomatic approaches into the pterygopalatine fossa using a solid angle as a measure of size of the approach in five virtually reconstructed heads. The minimally invasive approaches were planned by manually drawing the edges of “pyramids” that described each approach in 3D using virtual reality program Tracer. For each head, a transverse diameter was measured and for each approach a solid angle size, average edge length and estimated area on the skin from where the target point could be reached were calculated. We found that, the solid angle of posterior infrazygomatic approach was significantly larger than suprazygomatic approach (p0.001). Furthermore, the transverse head diameter and solid angle in posterior infrazygomatic approach were negatively correlated (ρ=-0.55, p=0.0002), while transverse head diameter and the estimated area on the skin from where the target point could be reached in the suprazygomatic approach were positively correlated (ρ=0.37, p=0.0206). In conclusion, our findings provide important preliminary evidence on the feasibility of evaluating and comparing different minimally invasive approaches using virtual reality systems, and affirm the validity of solid angle as a measure of the size of the approach. ","PeriodicalId":49062,"journal":{"name":"Image Analysis & Stereology","volume":"32 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77788837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Isotropy and Uniformity of the Distribution of Reinforcing Phase in Cu/SiC Composite Materials Using μCT Methods μCT法分析Cu/SiC复合材料中增强相分布的各向同性和均匀性

IF 0.9 4区计算机科学

Image Analysis & Stereology Pub Date : 2021-04-07 DOI: 10.5566/IAS.1911

K. Pietrzak, A. Gładki, A. Strojny-Nędza, T. Wejrzanowski, K. Kaszyca

引用次数: 1