imageworker.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

 (if any) will save their tiles in the default
 <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/TileCache.html" title="class or interface in javax.media.jai">tile cache</A>.
<P>
<DT><B>Parameters:</B><DD><CODE>image</CODE> - The source image.</DL>
<HR>

<A NAME="ImageWorker(java.io.File)"><!-- --></A><H3>
ImageWorker</H3>
<PRE>
public <B>ImageWorker</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/File.html" title="class or interface in java.io">File</A>&nbsp;input)
            throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Creates a new builder for an image read from the specified file.
<P>
<DT><B>Parameters:</B><DD><CODE>input</CODE> - The file to read.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if the file can't be read.</DL>
<HR>

<A NAME="ImageWorker()"><!-- --></A><H3>
ImageWorker</H3>
<PRE>
public <B>ImageWorker</B>()</PRE>
<DL>
<DD>Creates a new uninitialized builder for an image read.
<P>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if the file can't be read.</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="setImage(java.awt.image.RenderedImage)"><!-- --></A><H3>
setImage</H3>
<PRE>
public final <A HREF="../../../org/geotools/image/ImageWorker.html" title="class in org.geotools.image">ImageWorker</A> <B>setImage</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/RenderedImage.html" title="class or interface in java.awt.image">RenderedImage</A>&nbsp;image)</PRE>
<DL>
<DD>Prepare this builder for the specified image. The images to be computed
 (if any) will save their tiles in the default
 <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/TileCache.html" title="class or interface in javax.media.jai">tile cache</A>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>image</CODE> - The source image.</DL>
</DD>
</DL>
<HR>

<A NAME="loadPlanarImageImage(java.lang.String, java.awt.RenderingHints, int, boolean)"><!-- --></A><H3>
loadPlanarImageImage</H3>
<PRE>
public static <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html" title="class or interface in javax.media.jai">PlanarImage</A> <B>loadPlanarImageImage</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;source,
                                               <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.html" title="class or interface in java.awt">RenderingHints</A>&nbsp;hints,
                                               int&nbsp;imageChoice,
                                               boolean&nbsp;readMetadata)</PRE>
<DL>
<DD>Loads an image using the provided file name and the provided hints, which
 are used to control caching and layout.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source image.<DD><CODE>hints</CODE> - The hints to use.<DD><CODE>imageChoice</CODE> - For multipage images.
<DT><B>Returns:</B><DD>The loaded image.</DL>
</DD>
</DL>
<HR>

<A NAME="getRenderedImage()"><!-- --></A><H3>
getRenderedImage</H3>
<PRE>
public final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/RenderedImage.html" title="class or interface in java.awt.image">RenderedImage</A> <B>getRenderedImage</B>()</PRE>
<DL>
<DD>Returns the current image.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getPlanarImage()"><CODE>getPlanarImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedOperation()"><CODE>getRenderedOperation()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getImageAsROI()"><CODE>getImageAsROI()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getPlanarImage()"><!-- --></A><H3>
getPlanarImage</H3>
<PRE>
public final <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html" title="class or interface in javax.media.jai">PlanarImage</A> <B>getPlanarImage</B>()</PRE>
<DL>
<DD>Returns the <A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()">rendered image</A> as a planar
 image.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()"><CODE>getRenderedImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedOperation()"><CODE>getRenderedOperation()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getImageAsROI()"><CODE>getImageAsROI()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getRenderedOperation()"><!-- --></A><H3>
getRenderedOperation</H3>
<PRE>
public final <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/RenderedOp.html" title="class or interface in javax.media.jai">RenderedOp</A> <B>getRenderedOperation</B>()</PRE>
<DL>
<DD>Returns the <A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()">rendered image</A> as a rendered
 operation.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()"><CODE>getRenderedImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getPlanarImage()"><CODE>getPlanarImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getImageAsROI()"><CODE>getImageAsROI()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getImageAsROI()"><!-- --></A><H3>
getImageAsROI</H3>
<PRE>
public final <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ROI.html" title="class or interface in javax.media.jai">ROI</A> <B>getImageAsROI</B>()</PRE>
<DL>
<DD>Returns a <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ROI.html" title="class or interface in javax.media.jai">Region Of Interest</A> built from the current
 <A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()">image</A>. If the image is multi-bands, then
 this method first computes an estimation of its
 <A HREF="../../../org/geotools/image/ImageWorker.html#intensity()">intensity</A>. Next, this method
 <A HREF="../../../org/geotools/image/ImageWorker.html#binarize()">binarize</A> the image and constructs a <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ROI.html" title="class or interface in javax.media.jai"><CODE>ROI</CODE></A>
 from the result.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedImage()"><CODE>getRenderedImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getPlanarImage()"><CODE>getPlanarImage()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getRenderedOperation()"><CODE>getRenderedOperation()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getROI()"><!-- --></A><H3>
getROI</H3>
<PRE>
public final <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ROI.html" title="class or interface in javax.media.jai">ROI</A> <B>getROI</B>()</PRE>
<DL>
<DD>Returns the <cite>region of interest</cite> currently set, or
  if none. The default value is .
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getMinimums()"><CODE>getMinimums()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getMaximums()"><CODE>getMaximums()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setROI(javax.media.jai.ROI)"><!-- --></A><H3>
setROI</H3>
<PRE>
public final <A HREF="../../../org/geotools/image/ImageWorker.html" title="class in org.geotools.image">ImageWorker</A> <B>setROI</B>(<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ROI.html" title="class or interface in javax.media.jai">ROI</A>&nbsp;roi)</PRE>
<DL>
<DD>Set the <cite>region of interest</cite> (ROI). A  set the
 ROI to the whole <A HREF="../../../org/geotools/image/ImageWorker.html#image">image</A>. The ROI is used by statistical
 m閠hods like <A HREF="../../../org/geotools/image/ImageWorker.html#getMinimums()"><CODE>getMinimums()</CODE></A> and <A HREF="../../../org/geotools/image/ImageWorker.html#getMaximums()"><CODE>getMaximums()</CODE></A>.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>this <A HREF="../../../org/geotools/image/ImageWorker.html" title="class in org.geotools.image"><CODE>ImageWorker</CODE></A>.<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/image/ImageWorker.html#getMinimums()"><CODE>getMinimums()</CODE></A>, 
<A HREF="../../../org/geotools/image/ImageWorker.html#getMaximums()"><CODE>getMaximums()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getRenderingHint(java.awt.RenderingHints.Key)"><!-- --></A><H3>
getRenderingHint</H3>
<PRE>
public final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getRenderingHint</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.Key.html" title="class or interface in java.awt">RenderingHints.Key</A>&nbsp;key)</PRE>
<DL>
<DD>Returns the rendering hint for the specified key, or  if
 none.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setRenderingHint(java.awt.RenderingHints.Key, java.lang.Object)"><!-- --></A><H3>
setRenderingHint</H3>
<PRE>
public final <A HREF="../../../org/geotools/image/ImageWorker.html" title="class in org.geotools.image">ImageWorker</A> <B>setRenderingHint</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.Key.html" title="class or interface in java.awt">RenderingHints.Key</A>&nbsp;key,
                                          <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)</PRE>
<DL>
<DD>Set a rendering hint tile to use for all images to be computed by this
 class. This method applies only to the next images to be computed; images
 already computed before this method call (if any) will not be affected.
 <p>
 Some common examples:
 <p>
 <ul>
 <li><code>setRenderingHint(<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/JAI.html#KEY_TILE_CACHE" title="class or interface in javax.media.jai">JAI.KEY_TILE_CACHE</A>, null)</code>
 disables completly the tile cache.</li>
 <li><code>setRenderingHint(<A HREF="../../../org/geotools/image/ImageWorker.html#TILING_ALLOWED">TILING_ALLOWED</A>, Boolean.FALSE)</code>
 forces all operators to produce untiled images.</li>
 </ul>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>this <A HREF="../../../org/geotools/image/ImageWorker.html" title="class in org.geotools.image"><CODE>ImageWorker</CODE></A>.</DL>
</DD>
</DL>
<HR>

<A NAME="removeRenderingHint(java.awt.RenderingHints.Key)"><!-- --><