<html>
<head>
<base href="http://fiji.sc/bugzilla/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Inconsistent x,y, and z shift with bilinear/bicubic interpolation"
href="http://fiji.sc/bugzilla/show_bug.cgi?id=1180">1180</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Inconsistent x,y, and z shift with bilinear/bicubic interpolation
</td>
</tr>
<tr>
<th>Product</th>
<td>Fiji
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P4
</td>
</tr>
<tr>
<th>Component</th>
<td>Plugins
</td>
</tr>
<tr>
<th>Assignee</th>
<td>imagej-bugs@imagej.net
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jan.eglinger@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>jan.eglinger@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Consider the macro pasted below.
When running 'Image > Adjust > Size...' with bilinear or bicubic interpolation,
the position of pixels gets shifted by 1.0 pixel in X, by 0.5 pixel in Y, and
by 0.5 pixel in Z direction, when compared to scaling without interpolation.
With the macro below, I get the following values for the center of mass:
1 None:6 8 8 8 8
2 Bilinear:6 8 8 9 8.500
3 Bicubic:6 8 8 9 8.500
I would expect all values to be 8 in the above table. In addition, I see a
shift in Z when scrolling through the three stacks side by side.
// macro code to illustrate scaling issue
newImage("Original", "8-bit black", 8, 8, 8);
setForegroundColor(255, 255, 255);
run("Specify...", "width=4 height=4 x=2 y=2 slice=3");
setSlice(3);
run("Fill", "slice");
setSlice(4);
run("Fill", "slice");
setSlice(5);
run("Fill", "slice");
setSlice(6);
run("Fill", "slice");
run("Select None");
run("Set... ", "zoom=1600 x=4 y=4");
run("Set Measurements...", "centroid center display redirect=None decimal=3");
run("Duplicate...", "title=None duplicate");
run("Size...", "width=16 height=16 depth=16 interpolation=None");
setSlice(6);
run("Set... ", "zoom=800 x=4 y=4");
run("Measure");
selectImage("Original");
run("Duplicate...", "title=Bilinear duplicate");
run("Size...", "width=16 height=16 depth=16 interpolation=Bilinear");
setSlice(6);
run("Set... ", "zoom=800 x=4 y=4");
run("Measure");
selectImage("Original");
run("Duplicate...", "title=Bicubic duplicate");
run("Size...", "width=16 height=16 depth=16 interpolation=Bicubic");
setSlice(6);
run("Set... ", "zoom=800 x=4 y=4");
run("Measure");
Information about your version of Java:
os.arch => amd64
os.name => Windows 7
os.version => 6.1
java.version => 1.6.0_24
java.vendor => Sun Microsystems Inc.
java.runtime.name => Java(TM) SE Runtime Environment
java.runtime.version => 1.6.0_24-b07
java.vm.name => Java HotSpot(TM) 64-Bit Server VM
java.vm.version => 19.1-b02
java.vm.vendor => Sun Microsystems Inc.
java.vm.info => mixed mode
java.awt.graphicsenv => sun.awt.Win32GraphicsEnvironment
java.specification.name => Java Platform API Specification
java.specification.version => 1.6
sun.cpu.endian => little
sun.desktop => windows
file.separator => \
The up-to-date check says: REMIND_LATER
Information relevant to JAVA_HOME related problems:
JAVA_HOME is set to: C:\UTILIT~1\FIJI-D~1.APP/java/win64/jdk1.6.0_24//jre
imagej.dir => C:\UTILIT~1\FIJI-D~1.APP
Information about the version of each plugin:
Activated update sites:
ImageJ: <a href="http://update.imagej.net/">http://update.imagej.net/</a> (last check:20151017033411)
Fiji: <a href="http://update.fiji.sc/">http://update.fiji.sc/</a> (last check:20151026112036)</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>