文章标题

 今天学习一下图片处理，为了自己以后也可以看看，加深记忆，这里只是一写图片处理的工具类，但是方法并不是很多，分享给大家，仅供大家参考。

package fly.wu.com.androidbook.Utils;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Paint;

/**
* 图像处理的工具类
* Created by fly.wu on 2017/3/18.
*/

  public class HandlerImageUtils {/** * @param bm          图片 * @param hue         色相 * @param stautration 饱和度 * @param lum         亮度 * @return Bitmap */public static Bitmap handlerImage(Bitmap bm, float hue, float stautration, float lum) {    //不能在原图上直接处理图片    Bitmap bitmap = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);    Canvas canvas = new Canvas(bitmap);    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);    //色相    ColorMatrix hueMatrix = new ColorMatrix();    hueMatrix.setRotate(0, hue);    hueMatrix.setRotate(1, hue);    hueMatrix.setRotate(2, hue);    //饱和度    ColorMatrix stautrationMatrix = new ColorMatrix();    stautrationMatrix.setSaturation(stautration);    //亮度    ColorMatrix lumMatrix = new ColorMatrix();    lumMatrix.setScale(lum, lum, lum, 1);    //整合    ColorMatrix matrix = new ColorMatrix();    matrix.postConcat(hueMatrix);    matrix.postConcat(stautrationMatrix);    matrix.postConcat(lumMatrix);    //画到画布上    paint.setColorFilter(new ColorMatrixColorFilter(matrix));    canvas.drawBitmap(bm, 0, 0, paint);    return bitmap;}//底片效果 negativepublic static Bitmap handleImageNegative(Bitmap bm) {    int width = bm.getWidth();    int height = bm.getHeight();    int color;    int r, g, b, a;    Bitmap bmp = Bitmap.createBitmap(width, height            , Bitmap.Config.ARGB_8888);    int[] oldPx = new int[width * height];    int[] newPx = new int[width * height];    bm.getPixels(oldPx, 0, width, 0, 0, width, height);    for (int i = 0; i < width * height; i++) {        color = oldPx[i];        r = Color.red(color);        g = Color.green(color);        b = Color.blue(color);        a = Color.alpha(color);        r = 255 - r;        g = 255 - g;        b = 255 - b;        if (r > 255) {            r = 255;        } else if (r < 0) {            r = 0;        }        if (g > 255) {            g = 255;        } else if (g < 0) {            g = 0;        }        if (b > 255) {            b = 255;        } else if (b < 0) {            b = 0;        }        newPx[i] = Color.argb(a, r, g, b);    }    bmp.setPixels(newPx, 0, width, 0, 0, width, height);    return bmp;}//怀旧效果 public static Bitmap handleImageNostalgia(Bitmap bm) {    int width = bm.getWidth();    int height = bm.getHeight();    int color;    int r, g, b, a,r1,b1,g1;    Bitmap bmp = Bitmap.createBitmap(width, height            , Bitmap.Config.ARGB_8888);    int[] oldPx = new int[width * height];    int[] newPx = new int[width * height];    bm.getPixels(oldPx, 0, width, 0, 0, width, height);    for (int i = 0; i < width * height; i++) {        color = oldPx[i];        r = Color.red(color);        g = Color.green(color);        b = Color.blue(color);        a = Color.alpha(color);        r = 255 - r;        g = 255 - g;        b = 255 - b;        r1 = (int) (0.393 * r + 0.769 * g + 0.189 * b);        g1 = (int) (0.349 * r + 0.686 * g + 0.168 * b);        b1 = (int) (0.272 * r + 0.534 * g + 0.131 * b);        if (r1 > 255) {            r1 = 255;        } else if (r1 < 0) {            r1 = 0;        }        if (g1 > 255) {            g1 = 255;        } else if (g1 < 0) {            g1= 0;        }        if (b1 > 255) {            b1 = 255;        } else if (b1 < 0) {            b1 = 0;        }        newPx[i] = Color.argb(a, r1, g1, b1);    }    bmp.setPixels(newPx, 0, width, 0, 0, width, height);    return bmp;}//浮雕效果public static Bitmap handleImageRelief(Bitmap bm) {    int width = bm.getWidth();    int height = bm.getHeight();    int color,beforeColor;    int r, g, b, a1,r1,b1,g1;    Bitmap bmp = Bitmap.createBitmap(width, height            , Bitmap.Config.ARGB_8888);    int[] oldPx = new int[width * height];    int[] newPx = new int[width * height];    bm.getPixels(oldPx, 0, width, 0, 0, width, height);    for (int i = 1; i < width * height; i++) {        beforeColor = oldPx[i - 1];        r1 = Color.red(beforeColor);        g1 = Color.green(beforeColor);        b1 = Color.blue(beforeColor);        a1 = Color.alpha(beforeColor);        color = oldPx[i];        r = Color.red(color);        g = Color.green(color);        b = Color.blue(color);        r1 = (r1 - r +127);        g1 = (g1 - g +127);        b1 = (b1 - b +127);        if (r1 > 255) {            r1 = 255;        } else if (r1 < 0) {            r1 = 0;        }        if (g1 > 255) {            g1 = 255;        } else if (g1 < 0) {            g1= 0;        }        if (b1 > 255) {            b1 = 255;        } else if (b1 < 0) {            b1 = 0;        }        newPx[i] = Color.argb(a1, r1, g1, b1);    }    bmp.setPixels(newPx, 0, width, 0, 0, width, height);    return bmp;}

}

如果那里有错可以给我提出来，然后我在改，如果你们有更好的图片的处理技术也可以和我分享一下，谢谢。