<div class="gmail_quote">On Fri, Feb 10, 2012 at 1:25 PM, yarram <span dir="ltr"><<a href="mailto:somasekhar.vit@gmail.com">somasekhar.vit@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
I want to control the VTK rendered image brightness and contrast. Please<br>
help me with the corresponding snippet. I couldn't find any perfect and<br>
clear post of this kind. Thank you in advance.<br>
<br>
Sincerely,<br>
Yarram (<a href="mailto:somasekhar.vit@gmail.com">somasekhar.vit@gmail.com</a>)</blockquote><div><br></div><div>These are two very separate questions:</div><div><br></div><div>1) How do I use a slider widget?</div><a href="http://programmingexamples.net/wiki/Qt/Widgets/Slider">http://programmingexamples.net/wiki/Qt/Widgets/Slider</a><br clear="all">
<br>2) How do I change the brightness and contrast of an image in VTK?</div><div class="gmail_quote"><span style="font-family:Arial,'Liberation Sans','DejaVu Sans',sans-serif;font-size:21px;line-height:27px;text-align:left;background-color:rgb(255,255,255)">You can use the vtkImageShiftScale filter:</span></div>
<div class="gmail_quote"><span style="font-family:Arial,'Liberation Sans','DejaVu Sans',sans-serif;font-size:21px;line-height:27px;text-align:left;background-color:rgb(255,255,255)"> </span><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageShiftScale">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageShiftScale</a> </div>
<div class="gmail_quote"><span style="background-color:rgb(255,255,255);font-family:Arial,'Liberation Sans','DejaVu Sans',sans-serif;font-size:21px;line-height:27px;text-align:left">Shift by brightness, scale by contrast.</span></div>
<div class="gmail_quote"><br></div><div class="gmail_quote">3) You'll need to use a QVTKWidget to link the two together:</div><div class="gmail_quote"><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUIMultipleInheritance">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUIMultipleInheritance</a></div>
<div class="gmail_quote"><br></div><div class="gmail_quote">Good luck,<br><br></div><div class="gmail_quote">David<br></div>