<meta http-equiv="content-type" content="text/html; charset=utf-8"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">I have a program based on the warpImageFilter that fails to converge when the direction consines for an oriented image (2D) are set to <div>
-1 0 </div><div>0 -1</div><div>I, perhaps incorrectly, thought that the direction matrix merely had to conform to the requirements that:</div><div>the direction vectors are orthogonal</div><div>the direction vectors are normal (unit length)</div>
<div>Thus this should fit the bill. However, for some reason an algorithm that works when ALL images have directions</div><div>1 0</div><div>0 1</div><div>fails to work, and more specifically the warper fails, when the directions are ALL set to </div>
<div>-1 0 </div><div>0 -1</div><div><br></div><div>Is there a known bug in the warper, am I missing something, or both? Thanks,</div><div>-Micah</div></span>