fc4b217c4a
help system Piers Cornwell <piers.cornwell@bigfoot.com> who has taken the burden to continue this project Karin and Olof started. --Sven
69 lines
3.5 KiB
HTML
69 lines
3.5 KiB
HTML
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<HTML>
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<HEAD>
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
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<TITLE>The Channels Dialog</TITLE>
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</HEAD>
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<BODY text="#000000" bgcolor="#FFFFFF" link="#0000FF" vlink="#FF0000" alink="#000088">
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<TABLE width="100%" cellspacing="1" cellpadding="1">
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<TR bgcolor="black">
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<TD width="100%" align="center"><FONT size="+2" color="white">The Channels
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Dialog</FONT></TD>
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</TR>
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<TR bgcolor="white" >
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<TD width="100%" align="left"><P>
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<P>
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The Channels tab displays the three RGB channels, showing the current red,
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green or blue color values of each pixel in your image. The RGB channel
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thumbnails are grayscale representations of each color channel, where white
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represents 100% color, and black represents no color.
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<P>
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The RGB channels each have an eye icon, so you can look at your image in
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a single color channel. Click off the eye icon in the Blue and Green channels,
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so that only the Red channel is visible. Bright red in the red channel is
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the equivalent of a maximum red value for that pixel; black means that the
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pixel has no red at all in it. If all three channels have maximum values
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for an area, that area is white.
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<P>
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The RGB channels are always active when a layer is active, and they display
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the color values of all visible layers, not just the active one. Unlike layers,
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the RGB channels can all be active at the same time.You can also choose to
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work in one or two specific color channels, by clicking on the appropriate
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channels to activate the ones you want and deactivate the ones you don't
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want.
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<P>
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You can create new channels by clicking the on the new button. This will
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bring up the <A HREF="new_channel.html">New Channel</A> dialog where you
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can set name, color and fill amount of the new channel. If you want to alter
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the values later on you just dubbel click on the channel which will bring
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up the <A HREF="edit_channel_attributes.html">Edit Channel Attributes</A>
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dialog. Normally you don't work with extra channels but they can be very
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handy to create and store selections within.
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<P>
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If you right click on the layer name you will be able to access the layer
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menu, with in the layer menu you have access to several other layer commands,
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see <A HREF="../../channels/index.html">Index</A>.
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<P>
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An experienced user can also use them to crate patterns and to create advanced
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colored images with. The channel stack tools are more or less only useful
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when you work with those kind of images.
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<H4>
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Selections and Channels
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</H4>
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<P>
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You are able to store a selection as a channel with the
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<A HREF="../../image/select/save_to_channel.html"><CODE>right-click|Select|Save
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To Channel</CODE></A> command. If you do so a new channel will be created,
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and in that channel you can paint, and erase etc. When you have altered your
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channel you can turn it into a selection again. To turn it into a selection
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you just click on the
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<A HREF="../../channels/channel_to_selection.html">Channel To Selection</A>
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button. This is a very convenient way to alter selections and not to talk
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about store several selections. In fact you can create selections from scratch
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by creating a new channel, alter it and then apply Channel To Selection.
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<P>
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<A href="index.html">Index</A>
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</TD>
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</TR>
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</TABLE>
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</BODY></HTML>
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