/*
* Copyright (c) 2011-2016, Peter Abeles. All Rights Reserved.
*
* This file is part of BoofCV (http://boofcv.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.
*/
package boofcv.core.image;
import boofcv.alg.InputSanityCheck;
import boofcv.struct.image.GrayF32;
import boofcv.struct.image.ImageGray;
import boofcv.struct.image.InterleavedF32;
/**
* Functions related to interleaved images.
*
* @author Peter Abeles
*/
public class InterleavedImageOps {
/**
* Splits the 2-band interleaved into into two {@link ImageGray}.
*
* @param interleaved (Input) Interleaved image with 2 bands
* @param band0 (Output) band 0
* @param band1 (Output) band 1
*/
public static void split2(InterleavedF32 interleaved , GrayF32 band0 , GrayF32 band1 ) {
if( interleaved.numBands != 2 )
throw new IllegalArgumentException("Input interleaved image must have 2 bands");
InputSanityCheck.checkSameShape(band0, interleaved);
InputSanityCheck.checkSameShape(band1, interleaved);
for( int y = 0; y < interleaved.height; y++ ) {
int indexTran = interleaved.startIndex + y*interleaved.stride;
int indexReal = band0.startIndex + y*band0.stride;
int indexImg = band1.startIndex + y*band1.stride;
for( int x = 0; x < interleaved.width; x++, indexTran += 2 ) {
band0.data[indexReal++] = interleaved.data[indexTran];
band1.data[indexImg++] = interleaved.data[indexTran+1];
}
}
}
/**
* Combines two {@link ImageGray} into a single {@link boofcv.struct.image.ImageInterleaved}.
*
* @param band0 (Input) band 0
* @param band1 (Input) band 1
* @param interleaved (Output) Interleaved image with 2 bands
*/
public static void merge2(GrayF32 band0 , GrayF32 band1 , InterleavedF32 interleaved ) {
if( interleaved.numBands != 2 )
throw new IllegalArgumentException("Output interleaved image must have 2 bands");
InputSanityCheck.checkSameShape(band0,interleaved);
InputSanityCheck.checkSameShape(band1,interleaved);
for( int y = 0; y < interleaved.height; y++ ) {
int indexTran = interleaved.startIndex + y*interleaved.stride;
int indexReal = band0.startIndex + y*band0.stride;
int indexImg = band1.startIndex + y*band1.stride;
for( int x = 0; x < interleaved.width; x++, indexTran += 2 ) {
interleaved.data[indexTran] = band0.data[indexReal++];
interleaved.data[indexTran+1] = band1.data[indexImg++];
}
}
}
}