wrong vtkOBJImporter default TexturePath
TexturePath should be initialized with "./" instead of "." otherwise one should add "/" in MTL file which is not compatible with Blender or Meshlab for instance
map_Kd /bakeGroundCorrected.png
Code to change
vtkOBJPolyDataProcessor::vtkOBJPolyDataProcessor()
{
// Instantiate object with nullptr filename, and no materials yet loaded.
this->FileName = "";
this->MTLFileName = "";
this->DefaultMTLFileName = true;
this->TexturePath = ".";
this->VertexScale = 1.0;
this->SuccessParsingFiles = 1;
this->SetNumberOfInputPorts(0);
/** multi-poly-data paradigm: pivot based on named materials */
vtkOBJImportedPolyDataWithMaterial* default_poly = (new vtkOBJImportedPolyDataWithMaterial);
poly_list.push_back(default_poly);
this->SetNumberOfOutputPorts(static_cast<int>(poly_list.size()));
}