24 types of image enhancement filters are provided to significantly compensate for changes in inspection conditions caused by workpiece conditions and external environments. KEYENCE's original algorithms generate optimal images for inspection to improve stability and reduce scrapping of non-defective workpieces due to inspection error.
Eliminates noise information within the inspection region and only highlights linear information. This filter is particularly effective for linear defect inspection for workpieces having rough surface conditions.
A linear stain or scratch cannot be detected due to minute rough edges on the background.
Only linear stains/scratches are extracted by ignoring background noise.
Removes or extracts image noise that is smaller than the specified area. This filter is effective when a rough background hinders image processing or to detect subtle stains.
Characters cannot be extracted properly due to white and black fibers contained in the cardboard.
Only bright and dark noise are removed and the printing condition remains unaffected.
Minute flaws exist on the background having printed characters and surface irregularities.
Only black stains smaller than the specified area are extracted.
Expands the intensity distribution within the inspection region to increase the contrast of an image. This filter stabilizes inspection when gradation necessary for image processing cannot be obtained due to the reflectance of workpieces.
The location is at the back of the workpiece, so the light intensity is insufficient, which makes it impossible to recognize the circuit board pattern.
The circuit board pattern can be recognized clearly. Because the filter determines the expansion width from the density distribution within the inspection region, images without overexposure and underexposure can be captured.
Cancels shading or uneven brightness occurring on the workpiece surface to optimize images for inspection. Even if shading conditions change each time, this filter corrects images in real time to only extract defective sections.
Shading occurs on the workpiece surface due to the curvature of the part.
Only stains are extracted by cancelling random shading in real time.