STEMMER IMAGING

Cameras: Flat-Field Correction

Technique used to compensate for sensor non uniformity caused by Fixed Pattern Noise (FPN) and PRNU (Photo Response Non Uniformity) as well as (where necessary) uneven lighting.

The flat-field correction (FFC) uses digital subtractive offset correction and multiplicative gain correction to correct each individual pixel. Without this correction, the camera displays different pixel values when recording a homogeneous object.

This process is performed real-time in hardware, either on the acquisition board or inside the camera itself.

By the way: You can learn how to perform a flat field correction step by step. Just watch our video!

This STEMMER IMAGING training videos shows you in simple steps how to perform a Flat Field Correction (FFC) for a machine vision line scan camera. The FFC will help to eliminate stripes and shading in line scan camera images.

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Mehr zu diesem Thema:

• Line Scan Technology
• Line scan applications
• Technical details of line scan cameras
• Exposure control and Binning of line scan cameras
• FPN - Fixed Pattern Noise
• TDI line scan
• Dual-line monochrome line scan cameras
• Colour line scan cameras
• Contact image sensors (CIS)
• Cameras