trevista^® DOME

The intelligent illumination components of the trevista® product range enable surface inspection in a new dimension. The patented unit is based on a special Shape from Shading algorithm. With its unique technology, it is the reference for 2.5D inspection. trevista® DOME is perfectly suited for the automated inspection of technical and decorative surfaces in the industrial environment.

Thanks to the shape-from-shading technology, trevista® DOME “sees” more compared to classic image-processing inspection systems since it represents the surface shape of the inspection objects plastically and makes even defects in the micrometer range visible. With its standardized illumination method, trevista® DOME can be used flexibly as a plug-and-play system for a multitude of tasks.

High inspection speed enables 100% inspection with a high parts throughput.

All Highlights at One Glance:

Seamless integration into your production process
Objective image evaluation: reliable detection of bad parts based on the topographical information down to the µm range
Minimized pseudo-reject rate
2.5D image representation with high z resolution
Suppression of brightness fluctuations and gloss effects
High inspection speed enables high parts throughput
Easy and quick operation thanks to easy and quick parameterization

Seamless Integration

Perfect interaction of illumination unit, camera, and algorithm
Camera and resolution freely selectable
Compensation of inaccurate parts feed
Robust construction for integration in an industrial environment

Universal Application

The process is suitable for a multitude of materials; even shiny and curved surfaces can be inspected without effort.

Time and Cost Saving

Plug-and-play system for immediate use without elaborate lighting tests

trevista® Algorithm

Algorithmic functions available as DLL
Designed for multi-core computers for maximum performance
Especially powerful in combination with state-of-the-art hardware

Control of visible parts, continuous material, front surfaces, and moving components
Surface inspection of lateral surfaces – 360° control
Perfect for parts ranging from shiny components to diffusely scattering surfaces
Inspection even of curved surfaces
Procedure suitable for a multitude of materials

Shape from Shading: See What's Really There.

The trevista® process is based on a patented “shape from shading” technology, which means that information about the three-dimensional shape of an object can be obtained from the shading of surfaces. The surface to be tested is diffusely illuminated by means of a hemispherical scattering body. From several input images, a special algorithm calculates high-quality result images for the subsequent automatic evaluation.

The Image – The Basis for Every Successful Image Processing Solution

By combining the result images in different ways, the inspection objects can be checked reliably and flexibly for various defect characteristics.

Brightness Information: Texture Image

Brightness properties of the surface are evaluated in the texture image so that defect characteristics such as discolorations and rust damages can be detected, too.

Topography Information: Curvature Image

The curvature image is direction-independent and contains all topographical information of the two slope images.

Its image information is ideal for the reliable detection and classification of the smallest local defects in the µm range such as scratches, impact marks, etc. In addition, an integration procedure embedded in the algorithm generates a local height image, with which local protrusions and indentations can be detected within fractions of a second.

Topography Information: Slope Images in y Direction

The two slope images in x and y direction are direction-dependent and are especially suited for evaluating faults with a preferred direction and shape deviations such as dents. Further slope images, with which especially rotation-symmetric parts can be inspected efficiently, are optional.

Topography Information: Slope Images in x Direction

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sales@sac-vision.de

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trevista DOME.pdf

Automated Surface Inspection of Demanding Components

trevista® DOME