ij_plugins.debayer2sx.package.scala Maven / Gradle / Ivy

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IJP DeBayer2SX Core
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/*
 * Image/J Plugins
 * Copyright (C) 2002-2021 Jarek Sacha
 * Author's email: jpsacha at gmail [dot] com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Latest release available at https://github.com/ij-plugins/ijp-DeBayer2SX
 */

package ij_plugins

import ij.process.{ByteProcessor, ColorProcessor, FloatProcessor}
import ij_plugins.debayer2sx.LoopUtils.copyRanges

package object debayer2sx {

  /**
    * The trivial reconstruction algorithm that simply copies values to corresponding band,
    * no interpolation or reconstruction.
    *
    * This is only useful for creation of example images that illustrate Bayer pattern.
    *
    * @param bay Bayer pattern coded image.
    */
  def debayerCopyGR(bay: ByteProcessor): ColorProcessor = {
    val w = bay.getWidth
    val h = bay.getHeight
    val fpBay = bay.convertToFloatProcessor()

    val fpR = new FloatProcessor(w, h)
    val fpG = new FloatProcessor(w, h)
    val fpB = new FloatProcessor(w, h)

    // Green
    copyRanges(fpG, Range(0, w, 2), Range(0, h, 2), fpBay, Range(0, w, 2), Range(0, h, 2))
    // Red
    copyRanges(fpR, Range(1, w, 2), Range(0, h, 2), fpBay, Range(1, w, 2), Range(0, h, 2))
    // Blue
    copyRanges(fpB, Range(0, w, 2), Range(1, h, 2), fpBay, Range(0, w, 2), Range(1, h, 2))
    // Green
    copyRanges(fpG, Range(1, w, 2), Range(1, h, 2), fpBay, Range(1, w, 2), Range(1, h, 2))

    val cp = new ColorProcessor(w, h)
    cp.setChannel(1, fpR.convertToByteProcessor(false))
    cp.setChannel(2, fpG.convertToByteProcessor(false))
    cp.setChannel(3, fpB.convertToByteProcessor(false))

    cp
  }

}