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An Introduction to Reverse Engineering

Reverse engineering is the process of giving out a system, device or object to view the different parts of this object and try to understand how each of them work with the others to create one functional unit. Reverse engineering is an essential process since it allows people to gain a view of technology in work and know how it can be utilized and optimized. The the process can lead to improvements through the innovation of applied technology, making inventions even better.

At first, reverse engineering services utilized analog and GPS scanning technology to get spatial data of objects and operating systems. Today, most engineering companies use laser scanners for this process.

3D laser scanning has several advantages over the traditional scanning methods, particularly in terms of scanning time and the cost of scanning. Laser scanners are employed in the process of reverse engineering for a variety of applications but each case, the scanning results are used to make models that allow the firms to fabricate objects with a lot of ease. The models include the hybrid surface models, the parametric, and shrinkwrap surface models.
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The Parametric Models
Parametric models convert ideal data from scanned data, and can ignore or incorporate manufacturing defects. This means that the parameters used in the parametric model are expressed in finite-dimensional parameter spaces distinguishing them from nonparametric models, semiparametric models, and semi-nonparametric models. Parametric models are used whenever 2D drawings are required when a product’s surface must be smooth, when the parts will be built on a scanned part, or when the scanning data will be conceptually modified.
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The Hybrid Surface Models
Just like the parametric models, hybrid surface models can convert ideal or realistic data from scanned data and can ignore or incorporate the manufacturing defects. The hybrid surface model is ideal when an object’s change needs re-trimming or must be a class A-surfaced. Hybrid surface models, just as their name suggests are used when only the surface of an object requires modification, and are therefore suitable when superficial modifications are made part of the object. This model is also ideal when 2D drawings are required when building on or around an object that is scanned or when surface finish of an object must be smooth.

Shrinkwrap Surface Models
The shrinkwrap surface models are used to take objects in their original state including the manufacturing defects; hence they are ideal for designing parts to accommodate as-built models. Mainly, there are three types of shrink wrap models: surface subset models, used to compose a collection of external surfaces and datum figures; solid faceted models which are used to give an approximate representation of the original object; and subset surface models, which are used in approximating the visual presentation of the original object.