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2021.06.18

Presence / absence inspection of specified color: Concept of color judgment allowable range and tips for setting

Although it is within the allowable range of color judgment, if you loosen it (make the value larger than the default 60), you will get an image of roughly picking up the color set with the specified color.
(If red is the specified color, pick up similar colors such as orange and pink)

On the other hand, if you make it stricter (make the value smaller than the default 60), you will get the image that only the colors that are as close as possible to the colors set with the specified colors will be picked up.
(If red is the specified color, only red that is as close as possible to the specified color will be picked up.)

ピンク枠が検査枠

The pink frame is the inspection frame. In the original inspection, one frame is provided for each wiring and each frame is set with the specified color.
This time, we will explain about the allowable range of color judgment, so we specified the color of the third wiring (orange) from the right and inspected whether this color can be detected, so we made such a frame.

 

色判定許容範囲60での検査結果

It is an inspection result in the color judgment allowable range 60.
The part painted in green is the part where the specified color (orange cable color) is detected.
Similar colors (yellow and red) have been recognized as similar to orange.

 

色判定許容範囲100(甘め)での検査結果

It is an inspection result in the color judgment allowable range 100 (loose setting).
The part painted in green is the part where the specified color (orange cable color) is detected.
Because it was too loose, the specified color (orange cable color) was detected even in the purple and gray wiring parts that were clearly different visually.

 

色判定許容範囲35(厳しめ)での検査結果

It is an inspection result in the color judgment allowable range 35 (strict setting).
The part painted in green is the part where the specified color (orange cable color) is detected.

 

色判定許容範囲5(厳しめ)での検査結果

It is an inspection result in the color judgment allowable range 5 (strict setting).
The part painted in green is the part where the specified color (orange cable color) is detected.
Since the setting is too strict, the wiring is orange visually, but the detection result is whether it matches the “orange color set with the specified color” as much as possible.

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