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/*
* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef otbLabelImageToOGRDataSourceFilter_h
#define otbLabelImageToOGRDataSourceFilter_h
#include "itkProcessObject.h"
#include "otbOGRDataSourceWrapper.h"
namespace otb
{
/** \class LabelImageToOGRDataSourceFilter
* this class uses \c GDALPolygonize() method to transform a Label image into
* a "memory" \c OGRDataSource. The layer in the DataSource is named "Layer".
* Each Feature of the layer has a Integer Field which name is specified by \c SetFieldName() (default is "DN").
* Label of the input image are written into this field.
* An optional input mask can be used to exclude pixels from vectorization process.
* All pixels with a value of 0 in the input mask image will not be suitable for vectorization.
* \note The Use8Connected parameter can be turn on and it will be used in \c GDALPolygonize(). But be carreful, it
* can create cross polygons !
* \note It is a non-streamed version.
* \ingroup OBIA
*
*
* \ingroup OTBConversion
*/
template <class TInputImage>
class ITK_EXPORT LabelImageToOGRDataSourceFilter :
public itk::ProcessObject
{
public:
/** typedef for the classes standards. */
typedef LabelImageToOGRDataSourceFilter Self;
typedef itk::ProcessObject Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for management of the object factory. */
itkNewMacro(Self);
/** Return the name of the class. */
itkTypeMacro(LabelImageToOGRDataSourceFilter, ProcessObject);
/** Definition of the input image */
typedef TInputImage InputImageType;
typedef typename InputImageType::PixelType InputPixelType;
typedef typename InputImageType::IndexType InputIndexType;
typedef typename InputImageType::SizeType SizeType;
typedef typename InputImageType::RegionType RegionType;
typedef typename InputImageType::SpacingType SpacingType;
typedef typename InputImageType::PointType OriginType;
typedef typename InputImageType::IndexType IndexType;
typedef ogr::DataSource OGRDataSourceType;
typedef typename OGRDataSourceType::Pointer OGRDataSourcePointerType;
typedef ogr::Layer OGRLayerType;
typedef itk::ProcessObject::DataObjectPointerArraySizeType DataObjectPointerArraySizeType;
/** Set/Get the input image of this process object. */
using Superclass::SetInput;
virtual void SetInput(const InputImageType *input);
virtual const InputImageType * GetInput(void);
/** Set the input mask image.
* All pixels in the mask with a value of 0 will not be considered
* suitable for vectorization.
*/
virtual void SetInputMask(const InputImageType *input);
virtual const InputImageType * GetInputMask(void);
/** Set the Field Name in which labels will be written. (default is "DN")
* A field "FieldName" of type integer is created in the output memory layer.
*/
itkSetMacro(FieldName, std::string);
/**
* Return the Field name in which labels have been written.
*/
itkGetMacro(FieldName, std::string);
/**
* Set the value of 8-connected neighborhood option used in \c GDALPolygonize
*/
itkSetMacro(Use8Connected, bool);
/**
* Get the value of 8-connected neighborhood option used in \c GDALPolygonize
*/
itkGetMacro(Use8Connected, bool);
/**
* Get the output \c ogr::DataSource which is a "memory" datasource.
*/
const OGRDataSourceType * GetOutput();
protected:
LabelImageToOGRDataSourceFilter();
~LabelImageToOGRDataSourceFilter() override {}
void GenerateInputRequestedRegion() override;
/** Generate Data method*/
void GenerateData() override;
/** DataObject pointer */
typedef itk::DataObject::Pointer DataObjectPointer;
DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx) override;
using Superclass::MakeOutput;
private:
LabelImageToOGRDataSourceFilter(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
std::string m_FieldName;
bool m_Use8Connected;
};
} // end namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbLabelImageToOGRDataSourceFilter.txx"
#endif
#endif
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