3D Printing: Developing Countries Perspectives

Ishengoma, Fredrick; Mtaho, Adam B.

doi:10.5120/18249-9329

Cited by 51 publications

(52 citation statements)

References 7 publications

(3 reference statements)

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“…3D printing services are therefore increasing rapidly [1,2]. However, the copyright infringement of 3D models has become an issue for the 3D printing ecosystem of product distribution websites, 3D scanning, and design-sharing [3,4].…”

Section: Introductionmentioning

confidence: 99%

A 3D Skeletonization Algorithm for 3D Mesh Models Using a Partial Parallel 3D Thinning Algorithm and 3D Skeleton Correcting Algorithm

Jin

Kim

2017

Applied Sciences

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Abstract:A three-dimensional (3D) skeletonization algorithm extracts the skeleton of a 3D model and provides it for many applications, such as 3D model classification and identification. There are three major skeletonization methodologies used in the literature, distance transform field-based methods, Voronoi diagram-based methods, and thinning-based methods. However, the existing algorithms cannot preserve the connectivity of the skeletons of the 3D mesh models. In this paper, we propose a 3D skeletonization algorithm for 3D mesh models using a partial parallel thinning algorithm and a 3D skeleton correcting algorithm. The proposed algorithm uses pre-defined removing and recovering templates. The partial parallel 3D thinning algorithm separates 62 symmetrical removing templates into two groups based on symmetry. It thins a model with the templates of each group in each thinning procedure. The 3D skeleton correcting algorithm uses six correcting templates to inspect the disconnected voxels in the skeleton and corrects them. The experimental results show several comparisons of skeletons extracted by different skeletonization algorithms. The proposed algorithm can extract the skeleton of each branch of a model and preserve the connectivity.

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Section: Introductionmentioning

confidence: 99%

A 3D Skeletonization Algorithm for 3D Mesh Models Using a Partial Parallel 3D Thinning Algorithm and 3D Skeleton Correcting Algorithm

Jin

Kim

2017

Applied Sciences

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“…Hence the 3D printing services are increasing rapidly [1,2]. However, copyright infringement of 3D models has become an issue for 3D printing ecosystem of product distribution websites, 3D scanning and design-sharing [3,4].…”

Section: Introductionmentioning

confidence: 99%

3D Model Identification Using Weighted Implicit Shape Representation and Panoramic View

Jin

Kim

2017

Applied Sciences

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Abstract:In this paper, we propose a 3 dimensional (3D) model identification method based on weighted implicit shape representation (WISR) and panoramic view. The WISR is used for 3D shape normalization. The 3D shape normalization method normalizes a 3D model by scaling, translation, and rotation with respect to the scale factor, center, and principal axes. The major advantage of the WISR is reduction of the influences caused by shape deformation and partial removal. The well-known scale-invariant feature transform descriptors are extracted from the panoramic view of the 3D model for feature matching. The panoramic view is a range image obtained by projecting a 3D model to the surface of a cylinder which is parallel to a principal axis determined by the 3D shape normalization. Because of using only one range image, the proposed method can provide small size of features and fast matching speed. The precision of the identification is 92% with 1200 models that consist of 24 deformed versions of 50 classes. The average feature size and matching time are 4.1 KB and 1.9 s.

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“…There has been an explosion of open-source scientific equipment [12,[17][18][19][20][21][22] and the number of free consumer designs has been rising exponentially [14]. There is also a body of work proposing that 3-D printers would also be useful for sustainable development [23][24][25]. While the application of 3-D printing in developing countries is still at an early stage, the technology application promises vast solutions to existing problems [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…While the application of 3-D printing in developing countries is still at an early stage, the technology application promises vast solutions to existing problems [23,24]. For example, most small farmers in the developing world use labor-intensive agricultural hand tools; Ishengoma and Mtaho hypothesize that superior tools can be developed with 3-D printing improving the efficiency of agriculture in the developing world [25]. At the same time it appears likely that the cost-saving nature of distributed manufacturing of 3-D printing could also benefit developed-world small-scale organic farms.…”

Section: Introductionmentioning

confidence: 99%

Applications of Open Source 3-D Printing on Small Farms

Pearce

2015

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Abstract:There is growing evidence that low-cost open-source 3-D printers can reduce costs by enabling distributed manufacturing of substitutes for both specialty equipment and conventional mass-manufactured products. The rate of 3-D printable designs under open licenses is growing exponentially and there are already hundreds of designs applicable to small-scale organic farming. It has also been hypothesized that this technology could assist sustainable development in rural communities that rely on small-scale organic agriculture. To gauge the present utility of open-source 3-D printers in this organic farm context both in the developed and developing world, this paper reviews the current open-source designs available and evaluates the ability of low-cost 3-D printers to be effective at reducing the economic costs of farming. This study limits the evaluation of open-source 3-D printers to only the most-developed fused filament fabrication of the bioplastic polylactic acid (PLA). PLA is a strong biodegradable and recyclable thermoplastic appropriate for a range of representative products, which are grouped into five categories of prints: hand tools, food processing, animal management, water management and hydroponics. The advantages and shortcomings of applying 3-D printing to each technology are evaluated. The results show a generalizable technical viability and economic benefit to adopting open-source 3-D printing for any of the technologies, although the individual economic impact is highly dependent on needs and frequency of use on a specific farm. Capital costs of a 3-D printer may be saved from on-farm printing of a single advanced analytical instrument in a day or replacing hundreds of inexpensive products over a year. In order for the full potential of open-source 3-D printing to be realized to assist organic farm economic resiliency and self-sufficiency, future work is outlined in five core areas: designs of 3-D printable objects, 3-D printing materials, 3-D printers, software and 3-D printable repositories.

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3D Printing: Developing Countries Perspectives

Cited by 51 publications

References 7 publications

A 3D Skeletonization Algorithm for 3D Mesh Models Using a Partial Parallel 3D Thinning Algorithm and 3D Skeleton Correcting Algorithm

A 3D Skeletonization Algorithm for 3D Mesh Models Using a Partial Parallel 3D Thinning Algorithm and 3D Skeleton Correcting Algorithm

3D Model Identification Using Weighted Implicit Shape Representation and Panoramic View

Applications of Open Source 3-D Printing on Small Farms

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