template<class DstArrayT, class SrcArrayT>
| void Impala::Core::Array::Watershed | ( | DstArrayT *& | dst, | |
| SrcArrayT * | src, | |||
| int | conn | |||
| ) | [inline] |
Watershed function based on Luc Vincent's algorithm.
Type of Src and Dst should be scalar integer based.
Definition at line 24 of file Watershed.h.
References Impala::Core::Array::Pattern::PatNgbOp2d(), Impala::Core::Array::Pattern::PatQueueBased(), PixMinMax(), and Impala::Core::Array::Trait::WSHEDVAL.
Referenced by Impala::Application::Im::DoWatershedVec3UInt8(), Impala::Application::Src::WindowSrc::HandleNewFrame(), Impala::Core::Test::TestWatershed::Run(), and SKIZ().
00025 { 00026 typedef typename SrcArrayT::ArithType ArithT; // expected to be int 00027 00028 // to speedup compute here the min and max gray values 00029 ArithT minVal, maxVal; 00030 PixMinMax(src, &minVal, &maxVal); 00031 // for more speedup, use a histogram to indicate the existing gray levels 00032 00033 Trait::QbWatershed<DstArrayT, SrcArrayT, SrcArrayT> 00034 qb(src->CW(), src->CH(), minVal, maxVal); 00035 SrcArrayT* src2 = ArrayClone<SrcArrayT>(src); 00036 Pattern::PatQueueBased(dst, src, src2, qb, conn); 00037 delete src2; 00038 00039 //because the LucVincent algorithm doesn't get all the watershed points 00040 //this neigborhoud operator replaces the smallest label with wshed value 00041 Trait::NgbLWshed<DstArrayT, DstArrayT> lwshed(conn, Trait::WSHEDVAL); 00042 Pattern::PatNgbOp2d(dst, dst, lwshed); 00043 }
Here is the call graph for this function:
