Automated quality inspection of camera zooming with real-time vision

Chang, Win−Jin

doi:10.1177/0954405416683973

Cited by 3 publications

(3 citation statements)

References 20 publications

(23 reference statements)

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“…automotive, aerospace, dental, construction industry). [12][13][14][15][16] Second, there may be several eligible and suitable alternatives for the considered production amongst all the different possible inspections.…”

Section: Introductionmentioning

confidence: 99%

Economic impact of quality inspection in manufacturing: A proposal for a novel cost modeling

Verna

Genta

Galetto

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Designing suitable quality inspections is a significant issue for manufacturing companies. In particular, performing an economic evaluation of alternative inspections is key for choosing the most appropriate, especially in the field of low-volume productions. This paper presents a cost breakdown model for assessing the economic performance of quality inspections with the aim to support designers in early inspection design phases. Unlike the main cost models developed in the scientific literature that only consider cost components related to the production process, the proposed model integrates production costs with the main cost drivers involved in the product quality-related steps, including inspection activities, pre- and after-sales reworks and unnecessary repairs due to inspection errors. Moreover, a novel performance measure providing a snapshot of profitability of product inspections – the Return On Investment of Inspections (ROII) – is presented. An application case in metal Additive Manufacturing is proposed to demonstrate the practical relevance of the model.

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Section: Introductionmentioning

confidence: 99%

Economic impact of quality inspection in manufacturing: A proposal for a novel cost modeling

Verna

Genta

Galetto

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…To maintain competitive edge, manufacturers must strive for high product quality and reliability regarding increasing customer requirements. 1,2 Nowadays, a high-quality manufacturing process with low defective percentage and process shift rate can be achieved more easily than decades ago. 3,4 In this background, the focus of quality control cannot be restricted only to the yield anymore.…”

Section: Introductionmentioning

confidence: 99%

Product reliability–oriented optimization design of time-between-events control chart system for high-quality manufacturing processes

Chen

Cui

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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In high-quality manufacturing processes, the yield is no more the only issue, and the quality control approach that also considers the product’s actual performance gradually becomes the focus. Reliability is a critical dimension of quality, and its degradation in usage is always determined by the manufacturing quality. To mitigate the degradation of reliability, this article presents a product reliability–oriented optimization design of the time-between-events control chart system, where the quantitative impact of process quality on the product reliability is analyzed. First, critical-to-reliability process parameters are identified, and a product reliability degradation model is proposed considering the effect of process variations and defects. Second, the observed event and the used statistics are determined to prearrange the time-between-events chart system. Third, all individual time-between-events charts are systematically optimized to minimize the expected batch product reliability degradation caused by potential process shifts, where the cost and statistical performance are considered as constraints. The result of the case study shows that the proposed design can reduce 27.02% of batch product reliability degradation due to manufacturing process quality, and this model can also save the operating cost on the basis of attaining minimum reliability degradation in certain situations.

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“…The experiment results demonstrate that all of these metrics are better than those of a conventional refractive lens.In imaging system, magnification imaging and wide field of view (FOV) imaging are very important in order to get more information 1 . Applications that require magnification imaging and wide FOV imaging range from surveillance 2 and medicine 3-5 to artificial intelligence 6,7 . Since with just one focus in a conventional imaging system, it requires zoom to take magnified images and wide FOV images, which means magnified images and wide FOV images cannot be taken by the conventional zoom imaging systems simultaneously.…”

mentioning

confidence: 99%

Bifocal flat lens with different imaging characteristics for a dual-sensor imaging system

Zhou

Kuang

et al. 2022

Sci Rep

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Wide field of view (FOV) images and magnified images can be taken simultaneously by dual-sensor imaging systems. Here, we propose an approach for creating a bifocal flat lens with different imaging characteristics of its two foci, which makes dual-sensor imaging systems more integrated and miniaturized. That is, two special parts of two different conventional ZP are extracted and then combine the two elements in a specific way. So that there are two foci with different characteristics along the optical axis, one is long focus with higher resolution, the other is short focus with long depth of focus (DOF). Under the proposed approach, a thin and light bifocal diffractive lens (BDL) with thickness of 0.6 μm is developed. The long and short focal lengths of the BDL are ~ 81 mm and ~ 27 mm, respectively, with a diameter of 6 mm. We experimentally demonstrate that the long focus of the BDL is capable of taking high-resolution magnified images, and its resolution is up to 21.90″. The short focus is able to take wide FOV with long DOF images, and two objects spread 2880 mm apart can be imaged clearly. The experiment results demonstrate that all of these metrics are better than those of a conventional refractive lens.

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Automated quality inspection of camera zooming with real-time vision

Cited by 3 publications

References 20 publications

Economic impact of quality inspection in manufacturing: A proposal for a novel cost modeling

Economic impact of quality inspection in manufacturing: A proposal for a novel cost modeling

Product reliability–oriented optimization design of time-between-events control chart system for high-quality manufacturing processes

Bifocal flat lens with different imaging characteristics for a dual-sensor imaging system

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