Research

year 2000 
author
Keyword Work Measurement, Motion Representation, Cycle Segmentation, 
Abstract Previous work measurement methods need much time and cost due to directly measuring time for work or are apt to include inaccuracy due to indirectly estimating it by using the previous reference data. In this study, we propose a method which efficiently measures time for work using digital image processing techniques. This method consists of two main steps: motion representation step and cycle segmentation step. In motion representation step, we first detect the motion of any object distinct from its background by subtracting between two consecutive images separated by a constant time interval and then, roughly locate the motion by using an edge detector and averaging coordinates of significant pixels of the edge image. Through these processes, the motion of the worker is represented by one dimensional time series data of worker location in horizontal and vertical axises. In cycle segmentation step, we extract the frames which have maximum or minimum coordinates in one cycle and store them

in a stack, and calculate each cycle time using these frames. In this step we also consider how to detect the event of camera area escape and work delay apt to happen in real work environments. To conclude, the experimental results show that the proposed method is useful for measuring time for work 
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번호 c year 제목 author
61 PhD  2003  Process Modeling and Performance Analysis Methodology toward Optimal Design of Manufacturing Systems [30] Kichang Lee 
60 MS  1998  Design of Integrated BOM Management System supporting Multiple Views Keumseok Kang 
59 MS  2009  A Study on Integrated Risk Management in Supply Chain - Focusing on High-tech Electronic Industry [52] file Kanghyun Kim 
58 MS  1998  A study on an efficient real-time deadlock-free control algorithm by using graph-theoretic approach [27] Jungwoon Yoo 
57 MS  2008  A study on supplier's performance measurements for a supply chain on a new product environment [1] Jungsub Lee 
56 MS  2003  Design of a BOF Blowing Control Model Using Artificail Intelligence Jungjoon Park 
55 MS  2003  Production Planning and Distribution Planning using Demand based mixed Genetic Algorithm in a Supply Chain Jung Im 
54 MS  2012  Flight and Maintenance Planning of Miliary Aircraft considering Preventive Maintenance Period [13] Jun-Ho Park 
53 PhD  2013  A study on production scheduling problems considering differential electricity pricing and distributed generations Jun Young Moon 
52 MS  2005  A Study on Product Development Methodology in Reverse Supply Chain [77] Joon Kim 
51 PhD  2010  Framework for Integrative SRM System and Collaboration Scorecard [26] Jongkyoung Park 
50 MS  1992  Event-Driven On-Line Operational Control of Flexible Manufacturing Systems Jonghun Park 
49 MS  1989  A Mathematical Decision Making Model for Real-Time Scheduling of an FMS Jonghan Kim 
48 PhD  2005  A Study on the Integration of Quality Designing and Process Control in Steel Industry [15] Jonghan Kim 
47 MS  2007  A Study on the Valuation of a Supply Chain Considering Management Efficiency and Environmental Effect [53] Jiyoun Kim 
46 MS  2005  A Study on Developing of Position collecting Vision system Using Marker [1] Jiyoon Park 
45 MS  2007  A Study on BOM for Enhancing Efficiency of Reverse Supply Chain [14] Jinseon Yoo 
44 PhD  2014  A study on integrative decision-making system for reconfigurable manufacturing cells Jin Wu Seo 
43 MS  2012  The study on target allocation model using simulation for counter-fire execution [22] Jeonghun Kim 
42 MS  2011  A Study on RMC Scheduling using Simulation [19] Jeongho Park 
41 MS  2007  A Simulation Study on the Impact of RFID Technology on the Supply Chain Counting Process [13] file Jangwon Cho 
40 MS  1993  A Study on the FMS Shop Floor Control by Bidding among Autonomous Objects Jangsuk Moon 
39 MS  1993  A Comparative Analysis of Production Control Policies under Production Uncertainty [5] Janghan Lee 
38 MS  1988  A Study on The Machine-Part Group Formation for FMS Planning and Operation Jaeyoon Kim 
37 MS  2004  A study on due-date assignment method in wafer fabrication facility producing multiple product types [3] Jaewon Park 
36 MS  1995  A Study on the Group Scheduling Problem with Sequence-dependent Set-up Times in a Multi-stage Cellular Manufacturing Systems Jaesoo Shim 
35 PhD  2009  A Study for Business Process Improvement Using Real-time Information of Unbalanced Work [19] Jaehyun Kong 
34 MS  1994  A Finitely Recursive Processes Approach to Modeling and Control of an FMC Jaeheuk Choi 
33 MS  2013  Design of an inspection system for reducing quality deterioration under VMI supply chain management system [16] Jaebong Lee 
32 MS  2006  A Study on the Assessment Method of Installation and Operation Cost in a Reverse Supply Chain [2] file Hyunjong Jeong 
31 MS  2007  A Study on Project Risk Management based on Earned Value Management [25] file Hyunil Noh 
30 PhD  2007  A Study on MRP Process Improvement in a Grid Enabled APS [2] file Hyoung-Gon Lee 
29 MS  1991  A Study on the Layered Architecture for the Control of FMS Cells Hosub Shin 
28 PhD  1997  A Study on FMS Design Justification Considering Part Type Selection and Performance Evaluation Hosub Shin 
27 PhD  2014  Multi-level job scheduling in a flexible discrete-part production environment Hong Bum Na 
26 MS  1991  A Study on Scheduling Problem of Hierarchically Structured Products in FMS [1] Hanil Jeong 
25 PhD  1996  An Improved Scheduling Heuristic Based on Batch Splitting Method for The Job Shop Scheduling Problem [4] Hanil Jeong 
24 PhD  2008  A study on integrated production planning and strategic framework in supply chain [15] Haejoong Kim 
23 MS  2013  Developing integrated key performance indicators and measurement scheme for MES [19] file Gyusun Hwang 
22 MS  2006  A Study on the Application of Group Technology for Naval Ship Design And Manufacturing: Relating to Platform Family Architecture [17] Gwangjae Park 
21 MS  2008  Integration of RFID and Web Service Technology in Manufacturing Systems [20] file Gunnam Ong 
20 MS  2004  A Design on Cost-Estimation Support System for Injection Mold Using AI Method [12] Gunhee Kim 
19 MS  1999  A Study on the Implementation of the Speech Recognition System for the Real-Time Decision Support of Manufacturing Cells [18] Eoksu Sim 
18 PhD  2005  Performance Analysis and Network Design of Supply Chain for Strategic Decision Making [14] Eoksu Sim 
17 MS  2000  A Study on Integrated Production Planning of Distributed Manufacturing Systems on Supply Chain Dosung Go 
16 MS  2000  Job Shop Scheduling for Minimizing the Sum of Earliness and Tardiness Dongsu Park 
15 PhD  2013  Price of Simplicity under Congestion: On the Revenue and Pricing Schemes in the Telecommunication Industry [58] file Dongmyung Lee 
14 MS  2005  A Study on RFID application in Reverse Supply Chain [3] Dongjoon Lim 
13 MS  2014  A study on operational models for electric vehicle battery switch stations in smart grid environment Dong Hyun Kim 
12 MS  2001  A Study on Components Development for Production Management Daiki Min