Thank you a lot for the catch. We can reproduce the problem. It is really a bug in IPP function, - not in ippiQualityIndex, but in ippiFilterGauss_8u_C1R function (in dynamic and threaded static libraries only, no such bug in non-threaded static version, see static linkage mode here <http://software.intel.com/en-us/articles/intel-integrated-performance-primitives-intel-ipp-for-windo... We will fix it in next release.
There are several possible workarounds , you maytry them temporarily
for example, use no-threaded static library or disable the thread inippiFilterGuass
ippGetNumThreads( &n );
ippSetNumThreads( 1 );
ippSetNumThreads( n );