Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687639
Yuting Chen, Qingwu Hu, Zhumao Lu, Hao Gong
It has become a global trend to combine information technology with the protection, research, inheritance of cultural relics utilizing computers, networks, software, which can provide supporting technologies and tools. Towards the key problem of 3D digitization of cultural relics in digital museum construction, a 3D reconstruction technology of small cultural relics based on spatial coded texture image projection is proposed. Firstly, a colorful texture spatial coded picture is designed based on the pseudo-random M-array whose window is unique. Secondly, a decoding algorithm based on color transfer technology is proposed to realize the decoding and accurate positioning of spatial coding. Finally, use the multi-view images after pixel coordinates positioning to directly obtain the corresponding points, and the 3D reconstruction of small cultural relics is realized. The experimental results show that the 3D reconstruction accuracy of the proposed method reaches 0.1488mm, which can better solve the problems encountered in the 3D reconstruction of small cultural relics.
{"title":"A Novel Approach to 3D Reconstruction Technology of Small Cultural Relics Based on Spatial Coded Texture Image Projection","authors":"Yuting Chen, Qingwu Hu, Zhumao Lu, Hao Gong","doi":"10.1109/ieeeconf54055.2021.9687639","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687639","url":null,"abstract":"It has become a global trend to combine information technology with the protection, research, inheritance of cultural relics utilizing computers, networks, software, which can provide supporting technologies and tools. Towards the key problem of 3D digitization of cultural relics in digital museum construction, a 3D reconstruction technology of small cultural relics based on spatial coded texture image projection is proposed. Firstly, a colorful texture spatial coded picture is designed based on the pseudo-random M-array whose window is unique. Secondly, a decoding algorithm based on color transfer technology is proposed to realize the decoding and accurate positioning of spatial coding. Finally, use the multi-view images after pixel coordinates positioning to directly obtain the corresponding points, and the 3D reconstruction of small cultural relics is realized. The experimental results show that the 3D reconstruction accuracy of the proposed method reaches 0.1488mm, which can better solve the problems encountered in the 3D reconstruction of small cultural relics.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121122110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687633
Jianglei Jin, Haowen Yan, Guigang Wang, Gazangjia Su
Based on the empirical data of traditional villages, this paper analyzes the correlation of influencing factors of the spatial distribution of traditional villages by using the method of the geographic detector, and discusses the spatial differentiation characteristics of traditional villages in Gansu Province by using the method of geoscience statistics. The following results were obtained: (1) In the spatial differentiation, the spatial agglomeration is obvious and different, which shows the distribution along the upper reaches of the Yellow River to the southeast, and the distribution of the prefecture is related to the landform type. In the vertical spatial distribution, the altitude data span is large, the highest in the Gannan city of Mula village in MaQu County, and the lowest in the Longnan city of Zhengjiashe village in Bingkou Town. With increasing altitude, the number of traditional villages within the 1000–1999 m level first rose to a maximum and then gradually decreased. (2) The spatial differentiation of the traditional villages has a normal distribution with the elevation, and the spatial differentiation is low, showing a distinct gourd-like structure; the eastern and southern regions are more concentrated, while the northern and western regions are less concentrated. (3) The spatial differentiation of traditional villages shows the characteristics of a regional difference, which is mainly distributed in the mountainous area of South Gansu, the Loess Plateau of central Gansu, and the plateau of South Gansu. The main factors of the spatial distribution difference of traditional villages are average slope, elevation, geological hazard risk, distance from the city, per capita GDP, and climate index.
{"title":"Spatial scanning of traditional villages and geographical exploration of spatial differentiation mechanism: a case study of Gansu Province","authors":"Jianglei Jin, Haowen Yan, Guigang Wang, Gazangjia Su","doi":"10.1109/ieeeconf54055.2021.9687633","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687633","url":null,"abstract":"Based on the empirical data of traditional villages, this paper analyzes the correlation of influencing factors of the spatial distribution of traditional villages by using the method of the geographic detector, and discusses the spatial differentiation characteristics of traditional villages in Gansu Province by using the method of geoscience statistics. The following results were obtained: (1) In the spatial differentiation, the spatial agglomeration is obvious and different, which shows the distribution along the upper reaches of the Yellow River to the southeast, and the distribution of the prefecture is related to the landform type. In the vertical spatial distribution, the altitude data span is large, the highest in the Gannan city of Mula village in MaQu County, and the lowest in the Longnan city of Zhengjiashe village in Bingkou Town. With increasing altitude, the number of traditional villages within the 1000–1999 m level first rose to a maximum and then gradually decreased. (2) The spatial differentiation of the traditional villages has a normal distribution with the elevation, and the spatial differentiation is low, showing a distinct gourd-like structure; the eastern and southern regions are more concentrated, while the northern and western regions are less concentrated. (3) The spatial differentiation of traditional villages shows the characteristics of a regional difference, which is mainly distributed in the mountainous area of South Gansu, the Loess Plateau of central Gansu, and the plateau of South Gansu. The main factors of the spatial distribution difference of traditional villages are average slope, elevation, geological hazard risk, distance from the city, per capita GDP, and climate index.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116426773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687507
Guilin Wang, Luo Gai
The land use/land cover change with rapid urbanization, especially the growth and spread of impervious surface (IS), is changing the structures, degrading the functions of the urban ecological systems, and posing threats to air quality. The IS coverage (ISC) should be recognized as a geographical indicator to reflect the intensity of human development activities. We examine the relationship between urbanization and air pollution in Beijing- Tianjin-Hebei (BTH) region in recent decades, using ISC as a geographical urbanization indicator and PM2.5 as the air pollution index. Our analysis shows that (1) The ISC in the BTH rose from 0.7% to 1.5% from 2000 to 2014. The annual mean of the PM2.5 concentration has soared from 45.7 to $boldsymbol{77.3 mu mathrm{g} / mathrm{m}^{3} text {. }}$ With ISC increasing, the PM2.5 pollution tend to exacerbate, and (2) that the hazardous zone (Beijing-Langfang-Tianjin-Tangshan along the highway G1 and Beijing- Baoding-Shijiazhuang-Xingtai-Handan along with the highway G4) were accompanied by the ISC has soared from 1.2% to 2.9%; and (3) that the spatial distribution of PM2.5 aggravation was consistent with the IS expansion in the BTH region, such as the growth of the ISC in the southeast (1.0% to 2.6%) was greater than that in the northwest (0.4% to 0.6%), and the increase of the PM2.5 concentration in the southeast $boldsymbol{text { (52.5 to } 98.0 mu mathrm{g} / mathrm{m}^{3})}$ was also greater than that in the northwest $boldsymbol{text { (22.7 to } 39.7 mu mathrm{g} / mathrm{m}^{3}).}$ And only Zhangjiakou (1 of 13 cities) satisfies national Target- II $boldsymbol{(35 mu mathrm{g}/mathrm{m}^{3})}$ with the lowest ISC of 0.2 %, compared with the highest of 8.0% in Beijing. Finally, at the station level, we found a good fit $(mathbf{R}=0.803$, P < 0.001) between the ISC of buffer with 3000 m and PM2.5 concentrations.
随着城市化的快速发展，土地利用/土地覆盖的变化，特别是不透水地表的增长和蔓延，正在改变城市生态系统的结构，降低城市生态系统的功能，并对空气质量构成威胁。应承认信息系统的覆盖范围是反映人类发展活动强度的地理指标。采用ISC作为地理城市化指标，PM2.5作为空气污染指数，研究了近几十年来京津冀地区城市化与大气污染的关系。分析表明:(1)从2000年到2014年，BTH的ISC从0.7%上升到1.5%。PM2.5浓度的年平均值从45.7飙升至77.3 mu mathm {g} / mathm {m}^{3} text{。}}$随着ISC的增加，PM2.5污染有加剧的趋势，(2)伴随ISC的危险区域(沿G1高速公路的北京-廊坊-天津-唐山和沿G4高速公路的北京-保定-石家庄-邢台-邯郸)从1.2%飙升至2.9%;和(3)PM2.5恶化的空间分布是符合蓝芽地区扩张,如ISC东南部的增长(1.0%到2.6%)大于西北部(0.4%到0.6%),东南和PM2.5浓度的增加美元 boldsymbol{文本{μ(52.5 - 98.0} mathrm {g} / mathrm {m} ^{3})}也比西北美元 boldsymbol{{文本(22.7至39.7}μ mathrm {g} / mathrm {m} ^{3})。只有张家口(13个城市中的1个)符合国家目标- II $boldsymbol{(35 mu mathm {g}/ mathm {m}^{3})}$， ISC最低为0.2%，而北京最高为8.0%。最后，在站点水平上，我们发现3000 m缓冲液的ISC与PM2.5浓度之间具有很好的拟合$(mathbf{R}=0.803$， P < 0.001)。
{"title":"Spatio-Temporal Variability of PM2.5 Concentrations and Their Relationship with Impervious Surface Expansion in the Beijing- Tianjin-Hebei Region, China","authors":"Guilin Wang, Luo Gai","doi":"10.1109/ieeeconf54055.2021.9687507","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687507","url":null,"abstract":"The land use/land cover change with rapid urbanization, especially the growth and spread of impervious surface (IS), is changing the structures, degrading the functions of the urban ecological systems, and posing threats to air quality. The IS coverage (ISC) should be recognized as a geographical indicator to reflect the intensity of human development activities. We examine the relationship between urbanization and air pollution in Beijing- Tianjin-Hebei (BTH) region in recent decades, using ISC as a geographical urbanization indicator and PM2.5 as the air pollution index. Our analysis shows that (1) The ISC in the BTH rose from 0.7% to 1.5% from 2000 to 2014. The annual mean of the PM2.5 concentration has soared from 45.7 to $boldsymbol{77.3 mu mathrm{g} / mathrm{m}^{3} text {. }}$ With ISC increasing, the PM2.5 pollution tend to exacerbate, and (2) that the hazardous zone (Beijing-Langfang-Tianjin-Tangshan along the highway G1 and Beijing- Baoding-Shijiazhuang-Xingtai-Handan along with the highway G4) were accompanied by the ISC has soared from 1.2% to 2.9%; and (3) that the spatial distribution of PM2.5 aggravation was consistent with the IS expansion in the BTH region, such as the growth of the ISC in the southeast (1.0% to 2.6%) was greater than that in the northwest (0.4% to 0.6%), and the increase of the PM2.5 concentration in the southeast $boldsymbol{text { (52.5 to } 98.0 mu mathrm{g} / mathrm{m}^{3})}$ was also greater than that in the northwest $boldsymbol{text { (22.7 to } 39.7 mu mathrm{g} / mathrm{m}^{3}).}$ And only Zhangjiakou (1 of 13 cities) satisfies national Target- II $boldsymbol{(35 mu mathrm{g}/mathrm{m}^{3})}$ with the lowest ISC of 0.2 %, compared with the highest of 8.0% in Beijing. Finally, at the station level, we found a good fit $(mathbf{R}=0.803$, P < 0.001) between the ISC of buffer with 3000 m and PM2.5 concentrations.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122593177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687635
Ke Liu, Y. Gan, Zhengyu Luo, L. Dong
Danjiangkou Reservoir is the water source of the Middle Route Project of South-To-North Water Diversion. Monitoring cage culture conditions is of great significance to guarantee the quality of the delivered water. The high-resolution remote sensing images from ZY3 and GF-2 satellites from 2013 to 2017 were used to extract cage culture information and analyze its dynamic characteristics. Moreover, suggestions for monitoring cage culture in Danjiangkou Reservoir were proposed. Our research showed that: (1) In general, the total area of cage culture in the reservoir area decreased year by year. The total area reduced to about a quarter in 2017 compared with that in 2013. (2) Taking 2014 as the key time node, the cage culture area increased slightly before 2014 and continued to decrease after 2014. It was related to the enhancement of water quality management because of the water supply of the South-to-North Water Diversion Project at the end of 2014. (3) It was recommended to monitor the water source protection area once a year. Cage culture should be monitored at least twice a year in the key protection area.
{"title":"Dynamic Monitoring of Cage Culture in Danjiangkou Reservoir Based on Domestic High Resolution Satellite Imagery","authors":"Ke Liu, Y. Gan, Zhengyu Luo, L. Dong","doi":"10.1109/ieeeconf54055.2021.9687635","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687635","url":null,"abstract":"Danjiangkou Reservoir is the water source of the Middle Route Project of South-To-North Water Diversion. Monitoring cage culture conditions is of great significance to guarantee the quality of the delivered water. The high-resolution remote sensing images from ZY3 and GF-2 satellites from 2013 to 2017 were used to extract cage culture information and analyze its dynamic characteristics. Moreover, suggestions for monitoring cage culture in Danjiangkou Reservoir were proposed. Our research showed that: (1) In general, the total area of cage culture in the reservoir area decreased year by year. The total area reduced to about a quarter in 2017 compared with that in 2013. (2) Taking 2014 as the key time node, the cage culture area increased slightly before 2014 and continued to decrease after 2014. It was related to the enhancement of water quality management because of the water supply of the South-to-North Water Diversion Project at the end of 2014. (3) It was recommended to monitor the water source protection area once a year. Cage culture should be monitored at least twice a year in the key protection area.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124541096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687656
Congjie Guo, Bingli Xu, Tao Jing, Yang Zhang, Hai-yan Hu, Lihui Wang
In combat simulation, the research on human simulation is a significant part. The human simulation includes perception, decision, behavior. This paper takes an individual soldier as an example and builds a visual perception model of people in the battlefield environment through visual modeling. The model starts with the human visual mechanism, analyzes and simulates the retinal imaging of the human eye, and proposes a conceptual model of individual soldier perception in a battlefield environment. It is determined that perception content, range, and intensity are the three keys to an individual soldier's visual three-dimensional perception. This paper constructs a perception distance model based on the resolution angle, a perception range model based on environmental occlusion, and a perception intensity model based on environmental information. This paper uses Unity3D software to simulate and verify the model. Its perception effect is good, and the research results can provide adequate support for the visual real-time perception simulation of individual soldiers in the virtual battlefield environment.
{"title":"Three-dimensional visual perception technology and simulation of individual soldier in combat","authors":"Congjie Guo, Bingli Xu, Tao Jing, Yang Zhang, Hai-yan Hu, Lihui Wang","doi":"10.1109/ieeeconf54055.2021.9687656","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687656","url":null,"abstract":"In combat simulation, the research on human simulation is a significant part. The human simulation includes perception, decision, behavior. This paper takes an individual soldier as an example and builds a visual perception model of people in the battlefield environment through visual modeling. The model starts with the human visual mechanism, analyzes and simulates the retinal imaging of the human eye, and proposes a conceptual model of individual soldier perception in a battlefield environment. It is determined that perception content, range, and intensity are the three keys to an individual soldier's visual three-dimensional perception. This paper constructs a perception distance model based on the resolution angle, a perception range model based on environmental occlusion, and a perception intensity model based on environmental information. This paper uses Unity3D software to simulate and verify the model. Its perception effect is good, and the research results can provide adequate support for the visual real-time perception simulation of individual soldiers in the virtual battlefield environment.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133894774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687647
Shixiong Hu, Mengya Jia, Yiming Zhang, Lingyu Hou, Scott Collenburg
The presence of fish species in a stream reach is a result of past and current influences acting against different spatial scales. This multidimensional study was concerned with (1) analyzing stream temperature in a small watershed and (2) how environmental variables effect on fish species presence. Air and stream temperature models and Pennsylvania Department of Environmental Protection's Cold Water Fishery standard were used to identify how climatic and anthropogenic factors are influencing stream temperature. Air and stream temperature models indicated strong correlations with air temperature demonstrating how air temperature strongly influences stream temperature in the watershed. Logistic regressions were successful in modeling fish presence/absence and showed geographical components had a greater influence on fish species presence than temperature. Generalized additive models (GAMs) were successful in modeling specific thresholds of species but more surveys are needed in the watershed until GAMs can be implemented effectively.
{"title":"Associations between stream temperature and air temperature in the Paradise Creek Watershed","authors":"Shixiong Hu, Mengya Jia, Yiming Zhang, Lingyu Hou, Scott Collenburg","doi":"10.1109/ieeeconf54055.2021.9687647","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687647","url":null,"abstract":"The presence of fish species in a stream reach is a result of past and current influences acting against different spatial scales. This multidimensional study was concerned with (1) analyzing stream temperature in a small watershed and (2) how environmental variables effect on fish species presence. Air and stream temperature models and Pennsylvania Department of Environmental Protection's Cold Water Fishery standard were used to identify how climatic and anthropogenic factors are influencing stream temperature. Air and stream temperature models indicated strong correlations with air temperature demonstrating how air temperature strongly influences stream temperature in the watershed. Logistic regressions were successful in modeling fish presence/absence and showed geographical components had a greater influence on fish species presence than temperature. Generalized additive models (GAMs) were successful in modeling specific thresholds of species but more surveys are needed in the watershed until GAMs can be implemented effectively.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115481779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687511
Ningxin Fan, Songlin Zhang, Yali Li, Jie Han
Since different types of noise are inevitably introduced in the processes of image formation and transmission, image denoising is a necessary pre-processing process before various image applications. In this paper, a local adaptive wavelet denoising method based on elliptic direction window and edge detection is proposed. The method first performs wavelet decomposition for the image and performs edge detection on the wavelet coefficients. Then, the wavelet coefficients of the image are sampled by the elliptic directional window, and the local threshold of it is calculated. Next, the wavelet coefficients are quantized by the soft threshold function. Finally, the denoised image is obtained by inverse wavelet transformation. In addition, it is noted that weight less than 1 is multiplied to reduce the threshold amplitude as much as possible to preserve the edge features of the image. To validate the performance of the proposed denoising method, four standard gray-scale test images and hyperspectral remote sensing images are employed and the denoising results are compared with the Local Wiener Filtering with Directional Windows (LWFDW). The experimental results show that the method proposed in this paper performs better in the numerical indicators of classification of the hyperspectral image, and has fewer pseudo-Gibbs phenomena in visual than the LWFDW.
{"title":"A Denoising Method of Hyperspectral Remote Sensing Image Based on Wavelet Transform","authors":"Ningxin Fan, Songlin Zhang, Yali Li, Jie Han","doi":"10.1109/ieeeconf54055.2021.9687511","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687511","url":null,"abstract":"Since different types of noise are inevitably introduced in the processes of image formation and transmission, image denoising is a necessary pre-processing process before various image applications. In this paper, a local adaptive wavelet denoising method based on elliptic direction window and edge detection is proposed. The method first performs wavelet decomposition for the image and performs edge detection on the wavelet coefficients. Then, the wavelet coefficients of the image are sampled by the elliptic directional window, and the local threshold of it is calculated. Next, the wavelet coefficients are quantized by the soft threshold function. Finally, the denoised image is obtained by inverse wavelet transformation. In addition, it is noted that weight less than 1 is multiplied to reduce the threshold amplitude as much as possible to preserve the edge features of the image. To validate the performance of the proposed denoising method, four standard gray-scale test images and hyperspectral remote sensing images are employed and the denoising results are compared with the Local Wiener Filtering with Directional Windows (LWFDW). The experimental results show that the method proposed in this paper performs better in the numerical indicators of classification of the hyperspectral image, and has fewer pseudo-Gibbs phenomena in visual than the LWFDW.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115596441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687648
Xuege Wang, Fengqin Yan, F. Su
Unprecedented urbanization has taken place in the coastal areas, resulting in the degradation and loss of terrestrial and marine ecosystems. This study explored the spatial and temporal pattern of urbanization, taken the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) of China as the study area. Our results showed that the GBA has experienced dramatic expansion of construction land with the area increasing from 2607.4 km2 in 1980 to 8243.5 km2 in 2018. The largest annual increase rate was 279.7 km2/year occurring from 2000–2010, followed by 149.1 km2/year from 1990–2000. Urban residential land has replaced rural residential land and become the main type of construction land since 2000. Throughout the study period, farmland made the dominant contributions to the expansion of construction land with a decreasing trend in the GBA. Construction land expansion was dominated by edge expansion in the past four decades. A clearer unimodal pattern of the area and a monotonic decrease of the density of new increased construction land were observed as the distance from the city center. We suggested the decision-makers to scientifically plan the distribution of construction land to avoid disorderly construction land sprawl in different distance intervals and protect multiple natural ecosystems to realize the local sustainable development.
{"title":"Expansion of Construction Land in the Coastal Areas: A Case Study of the Guangdong - Hong Kong - Macao Greater Bay Area, China","authors":"Xuege Wang, Fengqin Yan, F. Su","doi":"10.1109/ieeeconf54055.2021.9687648","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687648","url":null,"abstract":"Unprecedented urbanization has taken place in the coastal areas, resulting in the degradation and loss of terrestrial and marine ecosystems. This study explored the spatial and temporal pattern of urbanization, taken the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) of China as the study area. Our results showed that the GBA has experienced dramatic expansion of construction land with the area increasing from 2607.4 km2 in 1980 to 8243.5 km2 in 2018. The largest annual increase rate was 279.7 km2/year occurring from 2000–2010, followed by 149.1 km2/year from 1990–2000. Urban residential land has replaced rural residential land and become the main type of construction land since 2000. Throughout the study period, farmland made the dominant contributions to the expansion of construction land with a decreasing trend in the GBA. Construction land expansion was dominated by edge expansion in the past four decades. A clearer unimodal pattern of the area and a monotonic decrease of the density of new increased construction land were observed as the distance from the city center. We suggested the decision-makers to scientifically plan the distribution of construction land to avoid disorderly construction land sprawl in different distance intervals and protect multiple natural ecosystems to realize the local sustainable development.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114463780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687659
Bo Xiao, Junsan Zhao, Dongsheng Li, Wenfei Xi, Di Zhou, Shuai Gao, Zhenfeng Zhao
Kunming, as an important urban interchange point along the “One Belt And One Road”, is in the peak period of subway construction. However, due to the ground characteristics, in the process of subway construction and operation, it is easy to cause surface subsidence, which threatens people's lives and property safety. Therefore, it is of great practical significance to master the ground deformation along the subway lines timely and accurately. Taking the Kunming subway network as an example, in this paper, 69 Sentinel-1A SAR images of Kunming city from July 20, 2018, to November 18,202,0 were processed by SBAS-InSAR technology, and then the surface subsidence information was extracted. On this basis, the spatial and temporal distribution characteristics of the surface subsidence of the five key subsidence areas and the 500m buffer zone along the subway are analyzed. The research results showed that from July 2018 to December 2020, the overall surface subsidence characteristics of Kunming were more obvious, and the subsidence rate is −123.98~31.52mm/a. The key subsidence areas are mainly distributed along the subway lines. The sedimentation value of the six subways was within the safe range except for settlement area 1 of Line 2 and settlement areas 3 and 4 of Line 4. This work demonstrates that the SBAS-InSAR technology based on Sentinel-1A SAR images has great potential in subway surface subsidence monitoring, which can provide a reference for government departments to carry out surface subsidence monitoring and disaster warning along the subway in the future.
{"title":"The Subsidence Detection and Analysis Along Kunming Subway Network Based on SBAS-InSAR","authors":"Bo Xiao, Junsan Zhao, Dongsheng Li, Wenfei Xi, Di Zhou, Shuai Gao, Zhenfeng Zhao","doi":"10.1109/ieeeconf54055.2021.9687659","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687659","url":null,"abstract":"Kunming, as an important urban interchange point along the “One Belt And One Road”, is in the peak period of subway construction. However, due to the ground characteristics, in the process of subway construction and operation, it is easy to cause surface subsidence, which threatens people's lives and property safety. Therefore, it is of great practical significance to master the ground deformation along the subway lines timely and accurately. Taking the Kunming subway network as an example, in this paper, 69 Sentinel-1A SAR images of Kunming city from July 20, 2018, to November 18,202,0 were processed by SBAS-InSAR technology, and then the surface subsidence information was extracted. On this basis, the spatial and temporal distribution characteristics of the surface subsidence of the five key subsidence areas and the 500m buffer zone along the subway are analyzed. The research results showed that from July 2018 to December 2020, the overall surface subsidence characteristics of Kunming were more obvious, and the subsidence rate is −123.98~31.52mm/a. The key subsidence areas are mainly distributed along the subway lines. The sedimentation value of the six subways was within the safe range except for settlement area 1 of Line 2 and settlement areas 3 and 4 of Line 4. This work demonstrates that the SBAS-InSAR technology based on Sentinel-1A SAR images has great potential in subway surface subsidence monitoring, which can provide a reference for government departments to carry out surface subsidence monitoring and disaster warning along the subway in the future.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122054520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.1109/ieeeconf54055.2021.9687657
Dandan Zhang, Ying-li Wei, C. Xiao, Jianchao Wang, Jie Wang
A quick obtainability of pre-disaster data like remote sensing and geology data of the disaster area is big trouble in emergency rescue. Therefore a flexible and complete database that can easily and quickly extract pre-disaster background data of the disaster area is very important. A Multi-level Dynamic Database Model of geological disaster emergency remote sensing monitoring was put forward in this paper. And the concept of form and physical storage structure was elaborated in detail. Through a test of landslide disaster in Shuicheng in Guizhou province and Zhouqu in Gansu province, the model shows good applicability for different kinds of geological disasters and different areas.
{"title":"A Multi-level Dynamic Database Model of Geological Disaster Emergency Remote Sensing Monitoring","authors":"Dandan Zhang, Ying-li Wei, C. Xiao, Jianchao Wang, Jie Wang","doi":"10.1109/ieeeconf54055.2021.9687657","DOIUrl":"https://doi.org/10.1109/ieeeconf54055.2021.9687657","url":null,"abstract":"A quick obtainability of pre-disaster data like remote sensing and geology data of the disaster area is big trouble in emergency rescue. Therefore a flexible and complete database that can easily and quickly extract pre-disaster background data of the disaster area is very important. A Multi-level Dynamic Database Model of geological disaster emergency remote sensing monitoring was put forward in this paper. And the concept of form and physical storage structure was elaborated in detail. Through a test of landslide disaster in Shuicheng in Guizhou province and Zhouqu in Gansu province, the model shows good applicability for different kinds of geological disasters and different areas.","PeriodicalId":171165,"journal":{"name":"2021 28th International Conference on Geoinformatics","volume":"19 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124586525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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