/*
* 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.alg.distort;
import boofcv.alg.interpolate.InterpolatePixelS;
import boofcv.struct.image.ImageGray;
/**
* Most basic implementation of {@link ImageDistort} for {@link ImageGray}. Computes the distortion from the
* dst to src image for each pixel. The dst pixel value is then set to the interpolated value of the src image.
*
* @author Peter Abeles
*/
public abstract class ImageDistortBasic_SB<Input extends ImageGray,Output extends ImageGray>
extends ImageDistortBasic<Input,Output,InterpolatePixelS<Input>> {
/**
* Specifies configuration parameters
*
* @param interp Interpolation algorithm
*/
public ImageDistortBasic_SB(InterpolatePixelS<Input> interp) {
super(interp);
}
@Override
public void applyAll() {
// todo TO make this faster first apply inside the region which can process the fast border
// then do the slower border thingy
for( int y = y0; y < y1; y++ ) {
int indexDst = dstImg.startIndex + dstImg.stride*y + x0;
for( int x = x0; x < x1; x++ , indexDst++ ) {
dstToSrc.compute(x,y);
assign(indexDst,interp.get(dstToSrc.distX, dstToSrc.distY));
}
}
}
@Override
public void applyOnlyInside() {
float maxWidth = srcImg.getWidth()-1;
float maxHeight = srcImg.getHeight()-1;
for( int y = y0; y < y1; y++ ) {
int indexDst = dstImg.startIndex + dstImg.stride*y + x0;
for( int x = x0; x < x1; x++ , indexDst++ ) {
dstToSrc.compute(x,y);
if( dstToSrc.distX >= 0 && dstToSrc.distX <= maxWidth &&
dstToSrc.distY >= 0 && dstToSrc.distY <= maxHeight ) {
assign(indexDst,interp.get(dstToSrc.distX, dstToSrc.distY));
}
}
}
}
protected abstract void assign( int indexDst , float value );
}