在图像上添加模糊效果

本文介绍了在图像上添加模糊效果的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

限时送ChatGPT账号..

我想在用户点击的药水上对图像产生模糊效果.用户可以在图像上点击多次，当他点击他点击的图像药水时会变得模糊.

i want blur effect on image on the potion which user tap.User can tap multiple times on image and when he taps the image potion which he taps get blur.

using (var blurfilters = new FilterEffect(source))
{
    var blur = new BlurFilter();

    blurfilters.Filters = new IFilter[] { blur };
    var target = new WriteableBitmap((int)img1.ActualWidth, (int)img1.ActualHeight);
    using (var renderer = new WriteableBitmapRenderer(blurfilters, target))
    {
        await renderer.RenderAsync();
        img1.Source = target;
    }
}

推荐答案

试试这个:

var blur = new BlurFilter(30);  

要使用 WritableBitmapExtensions 执行高斯模糊，请执行以下操作(出于某种原因，concolution 不会编辑 writableBitmap，所以你必须再次将它分配给同一个 writableBitmap 才能看到结果):

To do the gaussian blur with WritableBitmapExtensions do the following (for some reason concolution doesn't edit the writableBitmap, so you have to assign it again to the same writableBitmap to see the result):

WriteableBitmap target = new WriteableBitmap((int)img1.ActualWidth, (int)img1.ActualHeight);
target = target.Convolute(WriteableBitmapExtensions.KernelGaussianBlur5x5);

或

target = target.Convolute(WriteableBitmapExtensions.KernelGaussianBlur3x3);

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