mirror of https://github.com/GNOME/gimp.git
317 lines
5.9 KiB
HTML
317 lines
5.9 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>The Channels Dialog</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.49"><LINK
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REL="HOME"
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TITLE="GIMP User Manual"
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HREF="../../contents.html"><LINK
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REL="UP"
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TITLE="Channels"
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HREF="../../channels/index.html"><LINK
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REL="PREVIOUS"
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TITLE="Channels"
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HREF="../../channels/index.html"><LINK
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REL="NEXT"
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TITLE="The New Channel Dialog"
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HREF="../../dialogs/channels/new_channel.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>GIMP User Manual</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="../../channels/index.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 6. Channels</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="../../dialogs/channels/new_channel.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="DIALOGS-CHANNELS-CHANNELS"
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>The <SPAN
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CLASS="INTERFACE"
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>Channels</SPAN
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> Dialog</A
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></H1
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><A
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NAME="AEN1826"
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></A
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><A
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NAME="AEN1828"
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></A
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><P
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> The <SPAN
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CLASS="INTERFACE"
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>Channels</SPAN
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> tab displays the three
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<SPAN
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CLASS="ABBREV"
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>RGB</SPAN
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> channels, showing the current red, green, or
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blue color values of each pixel in your image. The
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<SPAN
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CLASS="ABBREV"
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>RGB</SPAN
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> channel thumbnails are grayscale
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representations of each color channel with white representing 100%
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color and black representing no color.
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</P
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><P
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> The <SPAN
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CLASS="ABBREV"
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>RGB</SPAN
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> channels each have an
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<SPAN
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CLASS="GUIICON"
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>eye</SPAN
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> icon, so you can look at your image in a
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single color channel. Click off the <SPAN
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CLASS="GUIICON"
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>eye</SPAN
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> icon in
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the Blue and Green channels, so that only the Red channel is
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visible. Bright red in the red channel is the equivalent of a
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maximum red value for that pixel; black means that the pixel has
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no red at all in it. You will see bright red for areas that are
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white or bright red. If all three channels have maximum values for
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an area, that area is white in the actual image.
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</P
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><P
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> The <SPAN
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CLASS="ABBREV"
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>RGB</SPAN
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> channels are always active when a layer
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is active. They display the color values of all visible layers,
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not just the active one. Unlike layers, the <SPAN
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CLASS="ABBREV"
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>RGB</SPAN
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>
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channels can all be active at the same time. You can also choose
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to work in one or two specific color channels by clicking on the
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appropriate channels to activate the ones you want and deactivate
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the ones you don't want.
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</P
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><P
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> You can create new channels by clicking the
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<SPAN
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CLASS="GUIBUTTON"
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> <SPAN
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CLASS="INLINEMEDIAOBJECT"
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><IMG
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SRC="../../../images/new_icon.png"
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></IMG
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></SPAN
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>
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</SPAN
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>
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button. This will bring up the <A
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HREF="../../dialogs/channels/new_channel.html"
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><SPAN
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CLASS="INTERFACE"
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>New
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Channel</SPAN
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></A
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> dialog where you can set name, color,
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and fill amount of the new channel. If you want to alter the
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values later on, you just double click on the channel which will
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bring up the <A
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HREF="../../dialogs/channels/edit_channel_attributes.html"
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> <SPAN
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CLASS="INTERFACE"
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>Edit Channel Attributes</SPAN
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> </A
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> dialog.
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Normally you don't work with extra channels, but they can be very
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handy for creating and storing selections.
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</P
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><P
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> If you <SPAN
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CLASS="MOUSEBUTTON"
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>right</SPAN
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> click on the layer name
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you will be able to access the layer menu. In the
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<SPAN
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CLASS="GUIMENU"
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>layer</SPAN
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> menu you have access to several other
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layer commands, see <A
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HREF="../../channels/index.html"
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>Chapter 6</A
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>.
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</P
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><P
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> An experienced user can also use them to create patterns and
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advanced colored images. The channel stack tools
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(<SPAN
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CLASS="INLINEMEDIAOBJECT"
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><IMG
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SRC="../../../images/raise_icon.png"
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></IMG
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></SPAN
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>
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and
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<SPAN
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CLASS="INLINEMEDIAOBJECT"
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><IMG
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SRC="../../../images/lower_icon.png"
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></IMG
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></SPAN
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>) are more or less only useful when you work
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with those kind of images.
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</P
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="DIALOGS-CHANNELS-SELECTIONS-AND-CHANNELS"
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>Selections and Channels</A
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></H2
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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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<SPAN
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CLASS="MOUSEBUTTON"
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>right</SPAN
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>click <SPAN
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CLASS="GUIMENU"
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>Select</SPAN
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>
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<A
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HREF="../../image/select/save_to_channel.html"
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><SPAN
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CLASS="GUIMENUITEM"
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>Save
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To Channel</SPAN
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></A
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> command. This creates a new
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channel where you can paint, erase, and perform any other
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drawing function. The altered channel can be turned into a
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selection again by clicking on the
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<A
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HREF="../../channels/channel_to_selection.html"
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> <SPAN
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CLASS="GUIBUTTON"
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> Channel To Selection
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</SPAN
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>
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</A
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>
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(<SPAN
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CLASS="INLINEMEDIAOBJECT"
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><IMG
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SRC="../../../images/to_selection_icon.png"
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></IMG
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></SPAN
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>)
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button. This is a very convenient way to alter selections and
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store several selections. In fact, you can create selections
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from scratch by creating a new channel, altering it, and then
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applying <SPAN
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CLASS="GUIBUTTON"
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>Channel To Selection</SPAN
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>.
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</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
|
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><A
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HREF="../../channels/index.html"
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>Prev</A
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></TD
|
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
|
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><A
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HREF="../../contents.html"
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>Home</A
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></TD
|
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><TD
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
|
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><A
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HREF="../../dialogs/channels/new_channel.html"
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>Next</A
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></TD
|
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></TR
|
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
|
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VALIGN="top"
|
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>Channels</TD
|
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><TD
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WIDTH="34%"
|
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ALIGN="center"
|
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VALIGN="top"
|
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><A
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HREF="../../channels/index.html"
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>Up</A
|
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></TD
|
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><TD
|
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
|
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>The <SPAN
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CLASS="INTERFACE"
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>New Channel</SPAN
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> Dialog</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |