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The VueScan Bible by Sascha Steinhoff

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RGB, grayscale, and infrared

VueScan’s output options can only process the source data that the scanner itself produces. Thus it makes sense to take a closer look at the operating mode of scanners in order to understand and classify the different output options. Naturally, you have to be aware of the input side before you can discuss output options! Almost any scanner capable of full-color scanning has three different color channels according to the RGB model, similar to typical digital cameras. The three color channels are R for red, G for green, and B for blue. The output file format of a scan can be configured in the Output tab.

At this point, we are not (!) talking about output formats, but exclusively about internal color channels. The color ...

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