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BoofCV is an open source Java library for real-time computer vision and robotics applications.
/*
* Copyright (c) 2011-2015, 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.interpolate.impl;
import boofcv.alg.interpolate.BilinearPixelS;
import boofcv.core.image.border.ImageBorder_F32;
import boofcv.struct.image.ImageFloat32;
import boofcv.struct.image.ImageType;
/**
*
* Implementation of {@link BilinearPixelS} for a specific image type.
*
*
*
* NOTE: This code was automatically generated using {@link GenerateImplBilinearPixel}.
*
*
* @author Peter Abeles
*/
public class ImplBilinearPixel_F32 extends BilinearPixelS {
public ImplBilinearPixel_F32() {
}
public ImplBilinearPixel_F32(ImageFloat32 orig) {
setImage(orig);
}
@Override
public float get_fast(float x, float y) {
int xt = (int) x;
int yt = (int) y;
float ax = x - xt;
float ay = y - yt;
int index = orig.startIndex + yt * stride + xt;
float[] data = orig.data;
float val = (1.0f - ax) * (1.0f - ay) * (data[index] ); // (x,y)
val += ax * (1.0f - ay) * (data[index + 1] ); // (x+1,y)
val += ax * ay * (data[index + 1 + stride] ); // (x+1,y+1)
val += (1.0f - ax) * ay * (data[index + stride] ); // (x,y+1)
return val;
}
public float get_border(float x, float y) {
float xf = (float)Math.floor(x);
float yf = (float)Math.floor(y);
int xt = (int) xf;
int yt = (int) yf;
float ax = x - xf;
float ay = y - yf;
ImageBorder_F32 border = (ImageBorder_F32)this.border;
float val = (1.0f - ax) * (1.0f - ay) * border.get(xt,yt); // (x,y)
val += ax * (1.0f - ay) * border.get(xt + 1, yt);; // (x+1,y)
val += ax * ay * border.get(xt + 1, yt + 1);; // (x+1,y+1)
val += (1.0f - ax) * ay * border.get(xt,yt+1);; // (x,y+1)
return val;
}
@Override
public float get(float x, float y) {
if (x < 0 || y < 0 || x > width-2 || y > height-2)
return get_border(x,y);
return get_fast(x,y);
}
@Override
public ImageType getImageType() {
return ImageType.single(ImageFloat32.class);
}
}
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