<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12">
<TITLE>Volume Rendering with vtkVolumeRaycastMapper</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2> </FONT>
<BR><FONT SIZE=2>Hi vtkusers,</FONT>
</P>
<P><FONT SIZE=2>I did volume rendering with vtkVolumeRaycastMapper and the volume image looks fine (see the left image in the attachment). I set the color opacity to 0 to turn the color below orange transparent and expected a smooth "isosurface". The problem is that the image surface looked jagged like the image rendered with vtkVolumeTextureMapper2D (the right image). I tried finer data grid, lights, and ImageSampleDistance, but no use. Will someone please tell me if I missed anything? </FONT></P>
<P><FONT SIZE=2>Thanks a lot.</FONT>
</P>
<P><FONT SIZE=2>Yang</FONT>
</P>
<P><FONT FACE="Arial" SIZE=2 COLOR="#000000"> <<raycast.jpg>> </FONT>
</BODY>
</HTML>