Composite feature and variational design concepts in a feature-based design system

Li, Rong-Kwei; Tu, Ying-Mei; Tao, Yang

doi:10.1080/00207549308956807

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…This activity is error prone and takes a long time to be completed. The feature-based technique is considered as an efficient way to understand design part geometry, tool geometry, tool motion path, probe motion path, and features which can carry all the required design information for process planning (Kusiak, 1990 Chang, 1990;Li et al, 1993). Feature-based representation offers a part definition with its features of design stage.…”

Section: Design By Feature Modulementioning

confidence: 99%

Modelling integration of CAD and inspection planning of simple element features

Ketan

Al-Bassam

Adel

et al. 2002

Integrated Manufacturing Systems

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Concurrent design and manufacturing is widely accepted as essential for obtaining an economically conceivable design solution for industrial production. Nevertheless the development of a viable computer‐aided inspection planning (CAIP) using CAD as input for effective NC‐measuring data preparation has not yet been successful. This paper introduces an approach to direct integration between CAD and CAIP by developing a feature‐based computer aided design/inspection planning (FB‐CAIP) system. The FB‐CAIP system contains a computer‐internal model of a product that contains sufficient information to guide the direct generation of NC code of the inspection activity. The developed small prototype system integrates knowledge‐based inspection planning with feature‐based CAD system for an automatic CNC measuring program generation of prismatic parts.

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Section: Design By Feature Modulementioning

confidence: 99%

Modelling integration of CAD and inspection planning of simple element features

Ketan

Al-Bassam

Adel

et al. 2002

Integrated Manufacturing Systems

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“…Moreover, the effect of the changing point detection method is discussed by comparing it with the actual behavior. In addition, by creating a composite feature value [18], which is a combination of more than two feature values instead of single feature values, and applying a changing point detection to it as well, we attempted to obtain information that is closer to fluctuations of actual facial expressions.…”

Section: Introductionmentioning

confidence: 99%

Toward Capturing Scientific Evidence in Elderly Care: Efficient Extraction of Changing Facial Feature Points

Hirayama

Chen

Saiki

et al. 2021

Sensors

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To capture scientific evidence in elderly care, a user-defined facial expression sensing service was proposed in our previous study. Since the time-series data of feature values have been growing at a high rate as the measurement time increases, it may be difficult to find points of interest, especially for detecting changes from the elderly facial expression, such as many elderly people can only be shown in a micro facial expression due to facial wrinkles and aging. The purpose of this paper is to implement a method to efficiently find points of interest (PoI) from the facial feature time-series data of the elderly. In the proposed method, the concept of changing point detection into the analysis of feature values is incorporated by us, to automatically detect big fluctuations or changes in the trend in feature values and detect the moment when the subject’s facial expression changed significantly. Our key idea is to introduce the novel concept of composite feature value to achieve higher accuracy and apply change-point detection to it as well as to single feature values. Furthermore, the PoI finding results from the facial feature time-series data of young volunteers and the elderly are analyzed and evaluated. By the experiments, it is found that the proposed method is able to capture the moment of large facial movements even for people with micro facial expressions and obtain information that can be used as a clue to investigate their response to care.

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“…The primary objective has been to provide an informationally rich part representation scheme to support, if not all, a majority of business and manufacturing activities of the product cycle in an integrated manner [1,2].…”

Section: Introductionmentioning

confidence: 99%

Intelligent system for extraction of product data from CADD models

Prabhu

Biswas

Pande

2001

Computers in Industry

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This paper reports a system for automatic extraction of geometric and non-geometric part information from`engineering drawings' created using computer-aided design and drafting (CADD) tools. A heuristic search is employed to interpret the characteristic attributes of dimension sets that denote linear, diametrical, radial and angular dimensions. Textual callouts are processed using natural language processing (NLP) techniques to interpret information related to part/feature function and related processes. The part information so recognized is represented using object oriented paradigm (OOP) suitable for linking to the downline CAD/CAM activities of the product cycle. The system, thus provides an effective alternative for design automation using CADD models.

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Composite feature and variational design concepts in a feature-based design system

Cited by 7 publications

References 13 publications

Modelling integration of CAD and inspection planning of simple element features

Modelling integration of CAD and inspection planning of simple element features

Toward Capturing Scientific Evidence in Elderly Care: Efficient Extraction of Changing Facial Feature Points

Intelligent system for extraction of product data from CADD models

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