From 817e6294b42b3e4435f1b99728afc1dca84a6445 Mon Sep 17 00:00:00 2001 From: Mattia Rizzolo Date: Fri, 3 Oct 2014 14:05:03 +0000 Subject: Imported Upstream version 0.97 --- doc/sane-xsane-medium-definition-doc.html | 266 ++++++++++++++++++++++++++++++ 1 file changed, 266 insertions(+) create mode 100644 doc/sane-xsane-medium-definition-doc.html (limited to 'doc/sane-xsane-medium-definition-doc.html') diff --git a/doc/sane-xsane-medium-definition-doc.html b/doc/sane-xsane-medium-definition-doc.html new file mode 100644 index 0000000..d66be13 --- /dev/null +++ b/doc/sane-xsane-medium-definition-doc.html @@ -0,0 +1,266 @@ + + + + + + + + XSane - Medium selection and definition + + + + + + + + + +
+XSane-logo + +
+

Medium selection and definition

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+ + +
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+Index +
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+Main window: + +
+Medium selection +
+
+
+Color correction: + +
+Standard options window +
+
+
+Advanced options window +
+
+
+Preview: + +
+Batch scan: + +
+Setup: + +		 +
+
+medium-selection +   +Medium selection: +
+Select the medium from which you want to acquire an image. +For reflective scans (photos, magazines, etc.) select full color range. +XSane comes with some predefined media. With some luck you can use such +a predefined media, but in general you have to create your own media +definitions because each scanner model generates slightly different colors. +Especially for negatives you have to define a media for each negative type +because they all have a different color of the film mask. +

+When you change the selection then it may be necessary to +do a new preview scan to get correct colors in the preview window. +The small point left of the Acquire Preview button in the +preview window tells you if the preview is correct or not. +

+Set the color correction sliders to default before you do a preview scan. +With a correct media definition you should get a preview with more or +less natural colors. But you have to apply a color correction afterwards. +You can not expect that the results are ok without a fine correction of the +colors. You can start with an automatic correction but especially for +negatives it is good to do a manual fine correction before the final scan. +

+
+Create or edit a medium definition: +
+You can create and store your own definitions for different source media. +

+In the preferences menu there is an item edit medium definition. +
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+medium-definition-menu +
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+When you enable this item then the icon before the +slection menu of the medium gets a little slider on its right side: +

+ +edit-medium-definition +   +Edit medium definition: +
+When this icon is visible then you can edit and create medium definitions. +Do not use this mode to scan images, xsane will not behave like you expect +when you try to scan images in this mode. +
+ +

    + +
  1. +rgb-default +To define a medium for color scan disable the RGB default button +then you have sliders for each color separately. +
    2. + +
  2. +neagtive +When you want to define a medium definition for a negative +then activate the negative button. +
    3. + +
  3. +Now do some preview scans from the medium you like to define. +Set the color correction sliders brightness +and contrast so that you cut almost all unused color levels. +Do not cut any used color levels. It is better to keep a little +safety distance to the used colors. You can do a color correction +later in the preview window to cut unused colors, but +when your medium definition cuts colors that are used in your images +then you are not able to get these colors back. +
    +For negatives it is a good idea to select a part of the frame around the +image, but if possible do not select any holes. The frame around the image +defines the color of the film mask. In general the image does not contain +such a color but you can be sure that this mask defines one end of the used +color range. +
    4. + +
  4. +Set the gamma sliders so that you get natural colors. If you are unsure better +leave the gamma value close to 1.0, you can apply the gamma correction later. +
    5. + +
  5. To save the new definition or to rename, delete or reorder existing definitions: + +
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    1. open the medium menu with a short click with the left mouse button.
      2. +
    2. Move the mouse pointer to the entry that you want to edit or where you +want to add the new entry.
      3. +
    3. Press and hold the right mouse button to open the context menu.
      4. +
    4. Select a function in the context menu: +
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      +add medium +
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      + +Remark: The item add medium definition is only available in the context menu +when edit medium definition in the preferneces menu is enabled. + +
      5. +
    5. When you save new media definitions then please use the manufacturer and +the type of the medium as name.
      6. +
    +
    6. + +
  6. +Disable edit medium definition in the preferences menu. +
    7. + +
  7. +Test the newly created medium definition. It may be necessary to repeat these steps +some times for fine correction to get a usable definition. +
    8. + +
+ + +When you created good medium definitions please send the +file ~/.sane/xsane/xsane.mdf to +Oliver Rauch +and please tell me the name of the scanner that was used +to create the medium definitions. +I hope we can generate a database of medium definitions +for different scanners. + + +
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+Author: Oliver Rauch +
+ + + + -- cgit v1.2.3