The jack-of-all-trades... 2D Imaging
Most applications still use traditional area scan cameras because they can easily capture 2D images without having to move the object or the camera.
Take the picture. Done.
Thanks to the cheaper mass production of special sensors (Sony IMX 487, IMX 990, etc.), it is also becoming cheaper and easier to inspect at other wavelengths.
All types of area scan cameras:
Get more...3D Image Processing
Did you know that the Earth is not flat? A lot of information cannot always be reliably identified and measured using greyscale or colour differences, but only using its 3D properties, i.e. height differences. There are several ways to do this, which will be explained in the following chapters.
Some 3D image acquisition methods:
1D image acquistion: Line scan cameras
Do you need optical measurement technology that can scan wide webs or (endlessly) long objects?
Line scan cameras build up the image line by line. To obtain a two-dimensional image, you need "movement". Either the object moves linearly under the camera on a conveyor belt etc. or the sensor must be moved over the component (scanning table, robot guide etc.).
Different Line scan technologies:
Computational Imaging (2D)
Since smartphones have night or portrait mode, the term has become more familiar. Additional information can be obtained by capturing and computing multiple images, usually one after the other or even simultaneously. The best-known 2D computational imaging technique in the industry is "Shape-Form Shading".
Methods using Computational Imaging:
Many other technologies
More exotic methods have also found their way into industrial imaging and, after decades of development, now provide reliable and affordable detection options.
Less frequently used vision technologies:
Selection of the right hardware and suitable system
As you can see, the options are many, but so are the chances of backing the wrong horse!
To get there safely, define your vision system requirements using a 'requirement specification sheet'.
For more information, see "Planning vision systems" and, of course, the relevant chapters on technology.
Need help selecting a system?
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