image - 如何使用 WriteableBitmapExtension 库来模糊图像？

Question

这没有给我任何结果。代码有什么问题？顺便说一句，下面的代码模糊了图像。

var ImgFile = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/search.png"));
var wb = new WriteableBitmap(1, 1);
using (var strm = await ImgFile.OpenReadAsync())
{
    wb.SetSource(strm);
}
var wb2 = new WriteableBitmap(wb.PixelWidth,wb.PixelHeight);
var wb3 = WriteableBitmapExtensions.Convolute(wb2, WriteableBitmapExtensions.KernelGaussianBlur5x5);
PageBackground.Source = wb3;

Answer 1

您正在将图像加载到 wb 图像中，但您没有使用它来模糊（相反，您只是模糊了空的 wb2）。这应该有效：

var ImgFile = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/search.png"));
var wb = new WriteableBitmap(1, 1);
using (var strm = await ImgFile.OpenReadAsync())
{
     wb=await wb.FromStream(strm);
}
var wb3 = WriteableBitmapExtensions.Convolute(wb, WriteableBitmapExtensions.KernelGaussianBlur5x5);
PageBackground.Source = wb3;