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About brightness & contrast #11

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clzls opened this issue Dec 21, 2018 · 0 comments
Open

About brightness & contrast #11

clzls opened this issue Dec 21, 2018 · 0 comments

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@clzls
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clzls commented Dec 21, 2018

My scanner HP Deskjet 2130 's brightness (as well as contrast) range is 0 to 2000. 1000 provides with a good result. (It can be confirmed using scanimage) But you see, this stuff does not support a number larger than 100. Maybe you can check scanimage and determine the range dynamically?
@clzls clzls changed the title About brightness & Contrast About brightness & contrast Dec 21, 2018
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@clzls