#21 - Geometric measurements - Camera

📸 The role of industrial cameras in geometric optical measurements

The camera system performs the final step of imaging: it converts the light coming from the real world into a digital signal, which is then interpreted by the image-processing software.

🔹 Resolution → measurement accuracy
⤷ Industrial cameras have minimal sensor noise, so measurement repeatability can be directly calculated from pixel resolution.
⤷ Manufacturers often specify “subpixel” accuracy as well, but best practice is to design based on the pixel value.

🔹 Monochrome vs. color cameras
For geometric measurements, a monochrome camera is almost always the optimal choice:
⤷ higher sharpness
⤷ lower noise
⤷ color information is not needed

🔹 Mechanical and interface compatibility
Industrial cameras typically follow standards:
⤷ C/CS-mount optics
⤷ GigE, USB3, CoaXPress communication
⤷ universal mounting and connector solutions

The right camera is a critical component of any geometric measurement system — resolution and optics together determine the actual measurement capability.

Download GeomOptMeasCamera.pdf