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要求

应检查多色打印的饱和度是否一致。因此，应检测打印机喷嘴是否堵塞。

图在饮料瓶螺旋盖上打印的示例

所有印刷油墨都应只通过两次曝光来确定。这可以通过互补色来解决。

程序

•计数程序

•为各个颜色范围设置阈值以过滤颜色。

•将打印图像中的像素作为各自灰度值范围的参考值进行计数。

•如果发现像素数量明显减少，就可以发现问题。

根据使用的照明颜色和设置的阈值，会产生不同的游侠值和计数像素值。

表：像素计数器的不同结果示例

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要求

应检查多色打印的饱和度是否一致。因此应检测打印机喷嘴的堵塞情况。

图在饮料瓶旋盖上打印的示例

所有印刷油墨都应只通过两次曝光来确定。这可以通过互补色来解决。

程序

•计数程序

•为各个颜色范围设置阈值以过滤颜色。

•将打印图像中的像素作为各自灰度值范围的参考值进行计数。

•如果发现像素数量明显减少，就可以发现问题。

根据使用的照明颜色和设置的阈值，会产生不同的游侠值和计数像素值。

表：像素计数器的不同结果示例

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Requirement

The consistent saturation of a multicolor print should be checked. Blockages or clogging of the printer nozzles should thus be detected.

Fig.: Example of printing on a screw cap of a drinking bottle

All printing inks should be determined based on only 2 exposures. This can be solved using the complementary colors.

Procedure

•Counting procedure

•Set threshold values for the individual color ranges to filter the colors.

•Count the pixels in the print image as the reference value for the respective grayscale value ranges.

•A problem can be detected in the event of a noticeable decrease in the number of pixels found.

Different ranger and counted pixel values will result depending on the illumination color used and the threshold values set´.

Table: Example of different results of Pixel Counter

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Requirement

The consistent saturation of a multicolor print should be checked. Blockages or clogging of the printer nozzles should thus be detected.

Fig.: Example of printing on a screw cap of a drinking bottle

All printing inks should be determined based on only 2 exposures. This can be solved using the complementary colors.

Procedure

•Counting procedure

•Set threshold values for the individual color ranges to filter the colors.

•Count the pixels in the print image as the reference value for the respective grayscale value ranges.

•A problem can be detected in the event of a noticeable decrease in the number of pixels found.

Different ranger and counted pixel values will result depending on the illumination color used and the threshold values set´.

Table: Example of different results of Pixel Counter