android图像处理系统1.3

最终版源代码：https://github.com/nuptboyzhb/AndroidImageProSystem
该版本由很大的更新。在处理图像的方式上，我引入了java中的矩阵类(Matrix)。该类由http://math.nist.gov/javanumerics/jama/提供。实现了矩阵的加、减、乘、转置、矩阵的逆、范数、行列式等算法，并有多种构造函数和获得矩阵数据的方法。在图像处理系统1.3中，我们将图像的RGB数据保存为矩阵(Matrix),为后续的算法扩充打下了坚实的基础。我们在ImageProcess.java中引入包import Jama.Matrix;为了封装图像处理的过程，我们将获取RGB的模块分别封装成3个成员函数，将生成bitmap图像封装成函数makeToBitmap。并实现了图像翻转90度的算法。

@author:郑海波 2012-08-29 转载请声明：http://blog.csdn.net/nuptboyzhb/article/details/7925994

相关博客：http://blog.csdn.net/nuptboyzhb/article/details/7857366

http://blog.csdn.net/nuptboyzhb/article/details/7852999

[运行界面及效果]

android图像处理系统1.3_第1张图片

获取RGB及灰度的代码：
[java]

private Matrix getDataR(int[] pix,int width,int height){    Matrix dataR=new Matrix(width,height,0.0);    // Apply pixel-by-pixel change    int index = 0;    for (int y = 0; y < height; y++)    {    for (int x = 0; x < width; x++)    {    int r = ((pix[index] >> 16) & 0xff);      dataR.set(x, y, r);    index++;    } // x    } // y    return dataR;}private Matrix getDataG(int[] pix,int width,int height){    Matrix dataG=new Matrix(width,height,0.0);    // Apply pixel-by-pixel change    int index = 0;    for (int y = 0; y < height; y++)    {    for (int x = 0; x < width; x++)    {    int g = ((pix[index] >> 8) & 0xff);      dataG.set(x, y, g);    index++;    } // x    } // y    return dataG;}private Matrix getDataB(int[] pix,int width,int height){    Matrix dataB=new Matrix(width,height,0.0);    // Apply pixel-by-pixel change    int index = 0;    for (int y = 0; y < height; y++)    {    for (int x = 0; x < width; x++)    {    int b =(pix[index] & 0xff);      dataB.set(x, y, b);    index++;    } // x    } // y    return dataB;}private Matrix getDataGray(int[] pix,int width,int height){    Matrix dataGray=new Matrix(width,height,0.0);    // Apply pixel-by-pixel change    int index = 0;    for (int y = 0; y < height; y++)    {    for (int x = 0; x < width; x++)    {    int r = ((pix[index] >> 16) & 0xff);    int g = ((pix[index] >> 8) & 0xff);    int b = (pix[index] & 0xff);    int gray=(int)(0.3*r+0.59*g+0.11*b);      dataGray.set(x, y, gray);      index++;    } // x    } // y    return dataGray;}

旋转90度的函数代码：
[java]

public Bitmap rotate90(Bitmap myBitmap) {// Create new array    int width = myBitmap.getWidth();    int height = myBitmap.getHeight();    int[] pix = new int[width * height];    myBitmap.getPixels(pix, 0, width, 0, 0, width, height);    Matrix dataR=getDataR(pix, width, height);    Matrix dataG=getDataG(pix, width, height);    Matrix dataB=getDataB(pix, width, height);    //Matrix dataGray=getDataGray(pix, width, height);    /////////////////////////////////////////////////////////    dataR=dataR.transpose();    dataG=dataG.transpose();    dataB=dataB.transpose();    ///////////////////////////////////////////////////////////////    // Change bitmap to use new array    Bitmap bitmap=makeToBitmap(dataR, dataG, dataB, width, height);    myBitmap = null;    pix = null;    return bitmap;}

封装makeToBitmap代码：
[java代码]

public Bitmap rotate90(Bitmap myBitmap) {// Create new array    int width = myBitmap.getWidth();    int height = myBitmap.getHeight();    int[] pix = new int[width * height];    myBitmap.getPixels(pix, 0, width, 0, 0, width, height);    Matrix dataR=getDataR(pix, width, height);    Matrix dataG=getDataG(pix, width, height);    Matrix dataB=getDataB(pix, width, height);    //Matrix dataGray=getDataGray(pix, width, height);    /////////////////////////////////////////////////////////    dataR=dataR.transpose();    dataG=dataG.transpose();    dataB=dataB.transpose();    ///////////////////////////////////////////////////////////////    // Change bitmap to use new array    Bitmap bitmap=makeToBitmap(dataR, dataG, dataB, width, height);    myBitmap = null;    pix = null;    return bitmap;}

android图像处理系统1.3

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