php图片添加高斯模糊的方法是什么

这篇文章主要介绍"php图片添加高斯模糊的方法是什么"，在日常操作中，相信很多人在php图片添加高斯模糊的方法是什么问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"php图片添加高斯模糊的方法是什么"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

 private static Bitmap activityShot(Activity activity) {         /*获取windows中最顶层的view*/        View view = activity.getWindow().getDecorView();        //允许当前窗口保存缓存信息        view.setDrawingCacheEnabled(true);        view.buildDrawingCache(true); //        //获取状态栏高度//        Rect rect = new Rect();//        view.getWindowVisibleDisplayFrame(rect);//        int statusBarHeight = rect.top;////        WindowManager windowManager = activity.getWindowManager();////        //获取屏幕宽和高//        DisplayMetrics outMetrics = new DisplayMetrics();//        windowManager.getDefaultDisplay().getMetrics(outMetrics);//        int width = outMetrics.widthPixels;//        int height = outMetrics.heightPixels;////        //去掉状态栏//        Bitmap shotBitmap = Bitmap.createBitmap(view.getDrawingCache(), 0, statusBarHeight, width,//                height - statusBarHeight);         //压缩系数2，4，8        float scaleFactor = 8;        Bitmap scaledBitmap = Bitmap.createBitmap(                (int) (view.getMeasuredWidth() / scaleFactor),                (int) (view.getMeasuredHeight() / scaleFactor),                Bitmap.Config.ARGB_8888);         Canvas canvas = new Canvas(scaledBitmap);        canvas.translate(-view.getLeft() / scaleFactor, -view.getTop() / scaleFactor);        canvas.scale(1 / scaleFactor, 1 / scaleFactor);        Paint paint = new Paint();        paint.setFlags(Paint.FILTER_BITMAP_FLAG);        // 截屏view.getDrawingCache()        canvas.drawBitmap(view.getDrawingCache(), 0, 0, paint);        //销毁缓存信息        view.destroyDrawingCache();        view.setDrawingCacheEnabled(false);        return scaledBitmap;    }

将return的scaleBitmap放入下面的方法：

private static Bitmap rsBlur(Context context, Bitmap source, int radius) {        Bitmap inputBmp = source;        //(1)        //初始化一个RenderScript Context        RenderScript renderScript = RenderScript.create(context);        // Allocate memory for Renderscript to work with        //(2)        //创建输入输出的allocation        final Allocation input = Allocation.createFromBitmap(renderScript, inputBmp);        final Allocation output = Allocation.createTyped(renderScript, input.getType());        //(3)        // Load up an instance of the specific script that we want to use.        //创建ScriptIntrinsic        ScriptIntrinsicBlur scriptIntrinsicBlur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));        //(4)        //填充数据        scriptIntrinsicBlur.setInput(input);        //(5)        // Set the blur radius        //设置模糊半径        scriptIntrinsicBlur.setRadius(radius);        //(6)        // Start the ScriptIntrinisicBlur        //启动内核        scriptIntrinsicBlur.forEach(output);        //(7)        // Copy the output to the blurred bitmap        //copy数据        output.copyTo(inputBmp);        //(8)        //销毁renderScript        renderScript.destroy();        return inputBmp;    }

不用的时候要remove掉：

    public void removeMask(){        if (group != null){            for(int i=0;i
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