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BoofCV is an open source Java library for real-time computer vision and robotics applications.

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/*
 * 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_S32;
import boofcv.struct.image.ImageType;
import boofcv.struct.image.ImageUInt8;


/**
 * 

* Implementation of {@link BilinearPixelS} for a specific image type. *

* *

* NOTE: This code was automatically generated using {@link GenerateImplBilinearPixel}. *

* * @author Peter Abeles */ public class ImplBilinearPixel_U8 extends BilinearPixelS { public ImplBilinearPixel_U8() { } public ImplBilinearPixel_U8(ImageUInt8 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; byte[] data = orig.data; float val = (1.0f - ax) * (1.0f - ay) * (data[index] & 0xFF); // (x,y) val += ax * (1.0f - ay) * (data[index + 1] & 0xFF); // (x+1,y) val += ax * ay * (data[index + 1 + stride] & 0xFF); // (x+1,y+1) val += (1.0f - ax) * ay * (data[index + stride] & 0xFF); // (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_S32 border = (ImageBorder_S32)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(ImageUInt8.class); } }




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