Support for XISF
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// ____ ______ __
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// / __ \ / ____// /
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// / /_/ // / / /
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// / ____// /___ / /___ PixInsight Class Library
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// /_/ \____//_____/ PCL 2.4.23
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// ----------------------------------------------------------------------------
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// pcl/InterlacedTransformation.h - Released 2022-03-12T18:59:29Z
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// ----------------------------------------------------------------------------
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// This file is part of the PixInsight Class Library (PCL).
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// PCL is a multiplatform C++ framework for development of PixInsight modules.
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//
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// Copyright (c) 2003-2022 Pleiades Astrophoto S.L. All Rights Reserved.
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//
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// Redistribution and use in both source and binary forms, with or without
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// modification, is permitted provided that the following conditions are met:
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//
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// 1. All redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 2. All redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the names "PixInsight" and "Pleiades Astrophoto", nor the names
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// of their contributors, may be used to endorse or promote products derived
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// from this software without specific prior written permission. For written
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// permission, please contact info@pixinsight.com.
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//
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// 4. All products derived from this software, in any form whatsoever, must
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// reproduce the following acknowledgment in the end-user documentation
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// and/or other materials provided with the product:
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//
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// "This product is based on software from the PixInsight project, developed
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// by Pleiades Astrophoto and its contributors (https://pixinsight.com/)."
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//
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// Alternatively, if that is where third-party acknowledgments normally
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// appear, this acknowledgment must be reproduced in the product itself.
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//
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// THIS SOFTWARE IS PROVIDED BY PLEIADES ASTROPHOTO AND ITS CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PLEIADES ASTROPHOTO OR ITS
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, BUSINESS
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// INTERRUPTION; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; AND LOSS OF USE,
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// DATA OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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// ----------------------------------------------------------------------------
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#ifndef __PCL_InterlacedTransformation_h
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#define __PCL_InterlacedTransformation_h
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/// \file pcl/InterlacedTransformation.h
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#include <pcl/Defs.h>
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#include <pcl/Diagnostics.h>
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#include <pcl/ImageTransformation.h>
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#include <pcl/Utility.h>
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namespace pcl
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{
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// ----------------------------------------------------------------------------
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/*!
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* \class InterlacedTransformation
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* \brief Interlaced image transformation in the spatial domain.
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*
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* %InterlacedTransformation represents an <em>interlaced image
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* transformation</em> in PCL. An interlaced transformation can be applied to a
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* subset of the pixels in a target image by acting exclusively on selected
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* rows and columns of pixels, distributed at regular intervals.
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*
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* The distance between two consecutive rows or columns of transformed pixels
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* is the <em>interlacing distance</em> that characterizes an interlaced
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* transformation. Intermediate pixels falling between selected rows or columns
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* are ignored during the transformation.
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*
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* In PCL, convolutions in the spatial domain and morphological transformations
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* have been implemented as interlaced transformations. A good example of
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* interlaced image transformation algorithm is the starlet transform (see the
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* StarletTransform class), which uses interlaced convolutions to perform a
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* multiscale decomposition.
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*/
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class PCL_CLASS InterlacedTransformation : public virtual ImageTransformation
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{
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public:
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/*!
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* Constructs an %InterlacedTransformation object with the specified
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* <em>interlacing distance</em> \a n > 0 in pixels.
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*/
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InterlacedTransformation( int n = 1 )
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: m_distance( pcl::Max( 1, n ) )
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{
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PCL_PRECONDITION( n > 0 )
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}
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/*!
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* Copy constructor.
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*/
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InterlacedTransformation( const InterlacedTransformation& ) = default;
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/*!
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* Destroys an %InterlacedTransformation object.
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*/
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virtual ~InterlacedTransformation()
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{
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}
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/*!
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* Returns true iff this transformation is currently interlaced.
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*
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* The transformation is interlaced if the current interlacing distance is
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* greater than one pixel.
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*
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* \sa InterlacingDistance()
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*/
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bool IsInterlaced() const
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{
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return m_distance > 1;
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}
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/*!
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* Returns the current interlacing distance of this transformation in
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* pixels.
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*
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* \sa SetInterlacingDistance(), IsInterlaced()
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*/
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int InterlacingDistance() const
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{
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return m_distance;
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}
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/*!
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* Sets the current interlacing distance of this transformation to the
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* specified value \a n > 0 in pixels.
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*
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* The interlacing distance is the distance in pixels between two
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* consecutive rows or columns of transformed pixels. Intermediate pixels
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* falling between selected rows or columns are ignored.
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*
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* \sa InterlacingDistance(), DisableInterlacing(), IsInterlaced()
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*/
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void SetInterlacingDistance( int n )
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{
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PCL_PRECONDITION( n > 0 )
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m_distance = pcl::Max( 1, n );
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}
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/*!
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* Disables interlacing for this transformation.
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*
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* This is a convenience function, equivalent to:
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*
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* \code SetInterlacingDistance( 1 ); \endcode
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*/
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void DisableInterlacing()
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{
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SetInterlacingDistance( 1 );
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}
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private:
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/*
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* Interlacing distance in pixels
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*/
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int m_distance = 1;
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};
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// ----------------------------------------------------------------------------
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} // pcl
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#endif // __PCL_InterlacedTransformation_h
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// ----------------------------------------------------------------------------
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// EOF pcl/InterlacedTransformation.h - Released 2022-03-12T18:59:29Z
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