updated the UI use, now:

>> python setup.py install
>> ipython openpiv/openpiv

opens the main window

makeui.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-pyuic4 data/ui/mainwindow.ui -o src/ui/ui_mainwindow.py
-pyrcc4 data/ui_resources.qrc -o src/ui/ui_resources_rc.py
+pyside-uic openpiv/data/ui/mainwindow.ui -o openpiv/ui/ui_mainwindow.py
+pyrcc4 openpiv/data/ui_resources.qrc -o openpiv/ui/ui_resources_rc.py

openpiv/openpiv

@@ -16,7 +16,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt4 import QtGui
+from PySide import QtGui
 
 from openpiv.ui.widgets import MainWindow
 import sys