Universidad de Alicante

Novel visual inspection system for quality control in production procesess

Posted by Universidad de AlicanteResponsive · Patents for licensing · Spain

Summary of the technology

Visual inspection systems are based on the employment of pictures, both in the visible and infrared or ultraviolet spectrums. They can also make use of sonar images or adding structured light to the environment in order to analyze defects and shapes in products.

The figure shows an image obtained by means of a range camera that allows distinguishing an object by its depth. Thus, its position and defects can be determined through its volume.

The technology is totally developed and has been laboratory and field tested, although, it requires a particular specification for each case. The technology can be used for real-time inspection of production processes, both for the recognition and for the classification and quality inspection.

Description of the technology

A Spanish research group has been working in inspection systems that use one or more cameras, together with the adequate illuminating systems to capture the necessary images. These pictures are then sent to a computer that processes the information to perform the classification according to the quality criteria and characteristics requested by the production process. The major innovative aspect of this technology is the use of advanced image processing techniques to obtain higher quality inspection systems; It is also possible to use sonar images or adding structured light to the environment in order to analyze defects and shapes in products. Thus, problems with brightness and shadows of images can be avoided.

Specifications

The technology has been successfully employed for: • detection of defects due to vibrations in aluminium sheets; • automatic detection of defects in flat glass; or, • quality control of labels in flowpack wipes. It is also possible to use sonar images or adding structured light to the environment in order to analyze defects and shapes in products

Main advantages of its use

  • Constant quality in inspecting products.
  • If correctly designed, it allows a product quality inspection similar than a visual inspection carried out by an expert operator.
  • It only depends on the parameters fixed for a production process.
  • No direct contact.

Applications

  • The technology can be applied in a large number of industrial facilities in many fields. Among the different industrial sectors, it can be highlighted the Agrofood sector or any industry requiring classification or a system that guarantees quality in the process that is being performed.For instance, the technology has been successfully employed for:• detection of defects due to vibrations in aluminium sheets;• automatic detection of defects in flat glass; or,• quality control of labels in flowpack wipes.

Additional information (attached documents)

Additional information (attached documents)

Related keywords

  • Imaging, Image Processing, Pattern Recognition
  • Detection and Analysis methods
  • Food Processing
  • Food and Beverages
  • inspection vision
  • visual automatic
  • agrofood industry
  • quality control

About Universidad de Alicante

Research & Technology Organization from Spain

As one of the largest universities of Spain, Universidad de Alicante has a rich history of innovation. Our main objective is to transfer the technology that our research teams are developing to the industries and companies which are able to take profit from them. R & D & Innovation results and know-how are offered in the domains of Chemistry, Materials, Environment, IT, Building and other applied subjects.

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