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公开(公告)号：US11176112B1
公开(公告)日：2021-11-16
申请号：US17084847
申请日：2020-10-30
发明人： Chih-Yuan Huang , Yu-Jui Chang
IPC分类号： G06F16/22 , G06F16/28 , G06F16/248 , G06F16/21 , G06F16/2453 , G06F11/34
摘要： An apparatus of adaptive index structures is provided. Four common data attributes, including time, space, keyword, and value, are used. The present invention is a structure adaptively selecting the most efficient combined index by estimating index performance and selectivity rate. The main concept is to set indexes with high selectivity rates at positions having higher priorities for processing query. The intermediate result of query is minimized and the performance is further improved. The present invention uses multiple indexes, where all possible combined-index orders are considered and the best combined index is selected according to different query adaptabilities. As a result, the structure has a high chance of saving query time at a rate of more than 25 times as compared to a structure with indexes of a single attribute sequence. Furthermore, as compared to the traditional relational database PostGIS, the reaction time is also twice faster.
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2.发明申请公开(公告)号：US20200082151A1
公开(公告)日：2020-03-12
申请号：US16123420
申请日：2018-09-06
发明人： Chih-Yuan Huang , Hsuan-Chi Ho , Tang-Huang Lin
摘要： A fusion method is provided to obtain a spatiotemporal image. The present invention is based on a conventional model—a spatial and temporal adaptive reflectance fusion model (STARFM). In the present invention, top-of-atmosphere (TOA) reflectance is kept in image fusion. Furthermore, Himawari-8, a geostationary satellite having a very high temporal resolution (10 minutes), is used. The present invention uses similar spectral bands as whose used for high-spatial-resolution image in satellites like Landsat-8 and SPOT-6. The present invention combines a high spatial-resolution image with a high temporal-resolution image obtained from Himawari-8. Thus, a TOA-reflectance-based spatial-temporal image fusion method (TOA-STFM) is proposed for generating an image having high spatiotemporal resolution. The present invention can be applied for air quality monitoring.
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公开(公告)号：US10009410B2
公开(公告)日：2018-06-26
申请号：US15228139
申请日：2016-08-04
发明人： Chih-Yuan Huang , Cheng-Hung Wu
CPC分类号： H04L67/06 , H04L41/0233 , H04L41/0273 , H04L67/02 , H04L67/125 , H04L67/42
摘要： Description files and web service protocols for actuating things on Internet of things (IoT) are proposed. Essentials of every thing on IoT (‘IoT thing’) are defined in a description file. The description file is lightweight, versatile and standardized for web services. Thus, the IoT thing can be communicated through its protocol described in the description file. Therein, a keyword replacement method is used. In a command sent by a user at a client end, a specific keyword is used to replace an essential in the description file. Then, a complete message based on the protocol is generated to control the IoT thing. The present invention uniformly uses the same way for operating and managing IoT things of all brands and solving heterogeneity. The present invention significantly reduces development cost and may work out an automatic, high-performance and interoperable IoT ecosystem with applications.
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公开(公告)号：US20180041566A1
公开(公告)日：2018-02-08
申请号：US15228139
申请日：2016-08-04
发明人： Chih-Yuan Huang , Cheng-Hung Wu
CPC分类号： H04L67/06 , H04L41/0233 , H04L41/0273 , H04L67/02 , H04L67/125 , H04L67/42
摘要： Description files and web service protocols for actuating things on Internet of things (IoT) are proposed. Essentials of every thing on IoT (‘IoT thing’) are defined in a description file. The description file is lightweight, versatile and standardized for web services. Thus, the IoT thing can be communicated through its protocol described in the description file. Therein, a keyword replacement method is used. In a command sent by a user at a client end, a specific keyword is used to replace an essential in the description file. Then, a complete message based on the protocol is generated to control the IoT thing. The present invention uniformly uses the same way for operating and managing IoT things of all brands and solving heterogeneity. The present invention significantly reduces development cost and may work out an automatic, high-performance and interoperable IoT ecosystem with applications.
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公开(公告)号：US10685230B2
公开(公告)日：2020-06-16
申请号：US16123420
申请日：2018-09-06
发明人： Chih-Yuan Huang , Hsuan-Chi Ho , Tang-Huang Lin
摘要： A fusion method is provided to obtain a spatiotemporal image. The present invention is based on a conventional model—a spatial and temporal adaptive reflectance fusion model (STARFM). In the present invention, top-of-atmosphere (TOA) reflectance is kept in image fusion. Furthermore, Himawari-8, a geostationary satellite having a very high temporal resolution (10 minutes), is used. The present invention uses similar spectral bands as whose used for high-spatial-resolution image in satellites like Landsat-8 and SPOT-6. The present invention combines a high spatial-resolution image with a high temporal-resolution image obtained from Himawari-8. Thus, a TOA-reflectance-based spatial-temporal image fusion method (TOA-STFM) is proposed for generating an image having high spatiotemporal resolution. The present invention can be applied for air quality monitoring.
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公开(公告)号：US20220114460A1
公开(公告)日：2022-04-14
申请号：US17084890
申请日：2020-10-30
发明人： Chih-Yuan Huang , I-Sheng Tseng
摘要： An apparatus is provided for identifying representation. The representation is obtained for heterogeneous time series data. The apparatus comprises a model training device and a data classification device. Based on the requirements of compression rate and information loss, a most suitable time series representation is found out for a specific time series data. In particular, the model training device assesses each item of training time series data to evaluate the performance of various representations for thus identifying the most suitable representation for each item of the specific training time series data; and, then, the training time series data are clustered and the most representative time series data for each clustered data is determined. On receiving unidentified time series data, the data classification device computes the similarity between the unidentified time series data and each cluster representation for indirectly identifying the most suitable representation for the unidentified time series data.
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公开(公告)号：US20170337205A1
公开(公告)日：2017-11-23
申请号：US15157602
申请日：2016-05-18
发明人： Chih-Yuan Huang , Hao Chang
CPC分类号： G06F16/9537 , G06F16/29 , G06F16/444 , G06F16/951 , G06F16/9566 , H04L67/02 , H04L67/18
摘要： Architecture for searching geospatial resources is provided. Geospatial web crawlers are used. The architecture comprises a database, a plurality of computers (workers) and a server (master). The master is connected with the database and the workers. By using the concept of web crawler and parallel processing, geospatial resources shared on the Internet can be automatically and quickly found in a large scale. Thus, geospatial resources can be collected with high efficiency. A complete and rich geospatial database can be established. The problem of quickly finding resources in the Big Geoweb Data can be solved.
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