Resolution describes the smallest geometric or optical structure that a sensor can physically distinguish. In inline measurement technology, it is often assumed that higher optical or sensor resolution automatically leads to better quality decisions. In industrial production processes, however, it is not the maximum level of detail that is decisive, but the relevance of the extracted features for the actual process evaluation.
Precision vs. accuracy
Increasing the number of pixels or point density initially increases the data volume and computational effort. However, if there is no clear correlation between the measured detail and the quality decision, the decision quality does not improve. In many applications, other factors dominate—such as stable referencing, appropriate filtering strategies, or robust feature definitions.
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Fundamentals of industrial image processing and laser technology
Process-relevant features are those that directly correlate with the functional or quality requirements of the component (e.g., profile depth, gap size, form deviation, edge position). The key requirement is that these features can be extracted reliably under real cycle times and environmental conditions.
In optical 3D laser measurement systems, experience often shows that in addition to high resolution, robust profile or geometry acquisition is particularly critical.
Stable feature extraction with clearly defined reference points leads to reproducible decisions—even when the nominal pixel count is not at the upper limit. The design of an optical inline measurement system therefore begins with defining the decision-relevant features, which then form the basis for selecting and dimensioning resolution, sensors, optics, illumination, and evaluation algorithms.
QuellTech’s 3D laser-based inline systems focus on the targeted extraction of process-critical features rather than simply maximizing pixel count. The combination of laser triangulation, structured feature definition, and industrial real-time data evaluation enables reliable quality decisions under real production conditions.
Inline measurement technology for industrial applications:
Optical Inline Measurement Technology
3D laser scanner technology and measurement principle:
3D Laser Scanner Measurement
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Stefan Ringwald
Technical Contact
If you have any questions about Optical Inline Measurement or would like a consultation from QuellTech on this subject, we will be happy to help.
We would like to help you to precisely evaluate your specific measurement task. Through an initial free test measurement of your application, we can give you an early assessment of the feasibility.
There is always potential for improvement, we will help you with that. Contact us for more information or to make an appointment for a consultation.
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Your technically competent contact, Stefan Ringwald, will be happy to help you.
Our aim is to fully understand your specific technical requirements for your current measurement task.
Thanks to many years of experience with complex tasks in the field of 3D laser measurement, you will receive well-founded solution proposals from us.
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