<div><span class="gmail_quote"></span>But, if I do this:</div>
<div>&nbsp;</div>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">char * scalars = image-&gt;GetScalarPointer();</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">&nbsp;</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">int sum = 0;</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">for(int i=0;i&lt;image-&gt;GetNumberOfPoints();i++)</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">{</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sum = sum + scalars[i];</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">}</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">double mean = sum/i;</span></font></p>
<div>----</div>
<div>all image will be computed, when I only want work with ROI values. What can I do this?<br clear="all"><br>-- <br>.: Sergi Dote Teixidor :. </div>