Sistem Pemeriksaan Automatik biasanya bermula dengan teknik Reka bentuk Berbantukan Komputer (CAD) dan berakhir dengan janaan arahan mesin untuk menukarkan bahan mentah kepada produk akhir, memperolehi data tiga dimensi untuk membina model permukaan berparameter bagi tujuan analisis ralat, duplikasi atau memperbaiki objek tersebut. Ia melibatkan pendigitalan permukaan objek yang perlu diperiksa, janaan model CAD dan analisis keputusan pemeriksaan. Pendigitalan boleh dilakukan dengan teknik kuar sentuh atau pengesan tanpa sentuh. Biasanya, tanpa bantuan daripada pengeluar, adalah sukar untuk memantau dan mengenal pasti perubahan produk selepas digunakan. Tambahan pula, reka bentuk cetakan asal tidak didedahkan. Objektif utama kertas ini ialah mencadangkan suatu algoritma yang mampu mengekstrak maklumat daripada objek berbentuk kompleks yang telah didigitalkan (dengan menggunakan pengimbas laser), misalnya cangkukan lutut, untuk menjanakan reka bentuk cetakannya. Diharapkan penyelidik lain, terutamanya dalam bidang perubatan dan bio-kejuruteraan mendapat manfaat daripada algoritma ini untuk meramal dan menganggar perubahan bekas cangkukan perubatan dan seterusnya mengubah reka bentuknya untuk memenuhi kehendak pesakit. Kata kunci: Pemeriksaan automatik, reka bentuk cetakan, cangkukan lutut, pengimbas 3D, gantian lutut total Automated inspection systems usually start from computer-aided design (CAD) techniques, and end with either generation of machining instructions required to convert a raw material into a finished product, or to obtain three-dimensional data for constructing a parametric surface model of the product for the purpose of error analysis, or to duplicate or enhance the object. It involves surface digitization of an existing part that needs inspection, CAD model creation and analyzing the inspection results. Most of the time, without the help from the manufacturer, it is very difficult to do inspection and to detect any changes of the product after being used. In addition, the original blueprints of most manufacturing products are not being revealed to the public. The main objective of this paper is to propose an algorithm that is able to extract information from digitized complex shape objects (using laser scanner), such as the medical knee implant (knee prosthesis), to generate their blueprint. It is hoped that other researchers, especially in the medical and bioengineering field, can benefit from this proposed algorithm to predict or approximate the changes of the medical ex-plant and modify its design to suit the patient needs. Key words: Automated inspection, blueprint, prosthesis, 3D scanner, total knee replacement
Pemudahan permukaan telah menjadi topik kajian yang menarik dalam beberapa dekad ini. Sesetengah penyelidik memperkenalkan kaedah yang baharu manakala penyelidik lain melakukan pengubahsuaian ataupun penambahbaikan terhadap kaedah yang sedia ada. Walau bagaimanapun, model yang telah dipermudahkan mempunyai kecenderungan untuk kehilangan sebahagian daripada bentuk asalnya. Dalam pada itu, untuk mengatasi segala masalah ini, satu algoritma baru diperkenalkan, di mana formula nisbah digunakan untuk mengenal pasti calon elemen yang layak untuk dibuang. Elemen yang digunakan dalam algoritma baru ini adalah segitiga. Keputusan kajian menunjukkan bahawa algoritma yang dicadangkan dapat mengekalkan bentuk permukaan model asal. Kata kunci: Permudahan permukaan; persamaan rasional; berjenis; segitiga kontraksi; penipisan permukaan Mesh simplification has become an interesting research area over the past few decades. Some researchers have introduced various new methods while others have made some modifications or improvements to the existing method. However, the modified model tended to lose some of its original shape. Hence, to solve these arising problems, a new decimation algorithm is introduced, in which rational equation is used to select elements as candidates to be removed. The proposed algorithm also uses triangular mesh as the element. The results show that our proposed algorithm can preserve the shape of the mesh. Key words: Mesh simplification; rational equation; manifold; triangle contraction; mesh decimation
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.