void Blob::ComputeLabels(IImage& Source, ImageBuffer& Labels, int ConnectType)
{
if (ConnectType != 4 && ConnectType != 8)
throw cl::Error(CL_INVALID_VALUE, "Wrong connect type in Blob::ComputeLabels");
if (Labels.Depth() != 32 || Labels.IsFloat())
throw cl::Error(CL_INVALID_VALUE, "Wrong Labels image type in Blob::ComputeLabels - Labels must be 32 bit integer");
if (m_TempBuffer == nullptr)
PrepareFor(Source);
CheckSameSize(Source, Labels);
CheckCompatibility(Labels, *m_TempBuffer);
m_BlobInfo.Init(ConnectType);
m_InfoBuffer.Send();
// Initialize the label image
Kernel(init_label, Source, Out(Labels, *m_TempBuffer), Labels.Step(), m_TempBuffer->Step(), m_InfoBuffer);
// These two labeling steps need to be executed at least twice each
int i = 0;
while (i <= m_BlobInfo.LastUsefulIteration)
{
i++;
Kernel(label_step1, Labels, *m_TempBuffer, Labels.Step(), m_TempBuffer->Step(), m_InfoBuffer, i);
Kernel(label_step2, Labels, *m_TempBuffer, Labels.Step(), m_TempBuffer->Step(), m_InfoBuffer, i);
if (i >= 2)
m_InfoBuffer.Read(true);
}
}
void Blob::RenameLabels(ImageBuffer& Labels)
{
if (Labels.Depth() != 32 || Labels.IsFloat())
throw cl::Error(CL_INVALID_VALUE, "Wrong Labels image type in Blob::RenameLabels - Labels must be 32 bit integer");
if (m_TempBuffer == nullptr)
throw cl::Error(CL_INVALID_MEM_OBJECT, "Wrong Labels image type in Blob::RenameLabels - Labels must be 32 bit integer");
CheckCompatibility(Labels, *m_TempBuffer);
// Rename the labels
Kernel(reorder_labels1, Labels, *m_TempBuffer, Labels.Step(), m_TempBuffer->Step(), m_InfoBuffer);
Kernel(reorder_labels2, Labels, *m_TempBuffer, Labels.Step(), m_TempBuffer->Step(), m_InfoBuffer);
m_InfoBuffer.Read(true);
}