Browsing by Author "Huang, Chih-Yuan"

Now showing 1 - 2 of 2

Multi-type change detection of building models by integrating spatial and spectral information
(2012)
Chen, Liang-Chien
;
Huang, Chih-Yuan
;
Teo, Tee-Ann
;
土木工程學系
;
Department of Civil Engineering
Detecting building changes followed by updates is preferable for efficient revisions to building models. Additionally, more change types can be detected with spatial information provided by building models for reducing land surveying work. Therefore, for efficient building of model revision and land surveys, this work applies a new multi-type change detection scheme with new light detection and ranging (LIDAR) point clouds, new aerial images and existing building models. By integrating the spatial information from LIDAR data and image-based spectral information, this work identifies changes to existing buildings and identifies newly built and changed buildings. To provide an initial value for further revisions, new building regions are generated from change detection results. Experimental results demonstrate that the proposed scheme has high accuracy for both change type determination and building region generation. To provide comprehensive observations, experimental results deemed unreliable are scrutinized.
Trusted Worthy Fog Computing Testbed Developed in Great China Region
(2017-01-01)
Huang, ChingYao
;
Zao, John
;
Huang, Chih-Yuan
;
Kha Tho Nguyen
;
Yang, Yang
Fog computing has been widely adopted to meet the performance of explosive growth of IoT applications. In both 5G and IoT applications, low latency and ultra-reliable communication are two key features which cloud-based only architecture cannot meet those performance requirements. Fog computing which adds a hierarchy of elements between the cloud and endpoint devices can meet those requirements in a secure, high performance, open, and interoperable way. To validate whether future fog node products can meet trusted computing criteria and performance requirements or not, a common testbed is necessary. In this paper, we will first discussion the security practice (the fundamental pillar of OpenFog architecture) required for future testbed designs. National Chiao Tung University (NCTU) is leading to attempt to provide Security-as-a-Service (SECaaS) in NCTU testbed based on 4G wireless networks and two other fog enabled testbeds provided by ITRI's smart lamp posts testbed and Shanghai Tech's software defined (SD) LTE fog nodes testbed are also discussed for rapid prototyping of vertical industry applications. Two use cases, indoor autonomous vehicle and BATS codes multihop wireless will also be presented as the potential examples for testbeds.