blur

If I add a DropShadowEffect to an parent element the text of the child elements are blurred. Why? <Grid> <Grid.Effect> <DropShadowEffect /> </Grid.Effect> <Grid.ColumnDefinitions> <ColumnDefinition /> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition /> </Grid.RowDefinitions> <TextBlock Background="White">Test</TextBlock> </Grid> Update: with shadow without shadow The reason why the text is blurred is because Effects cause the elements and all sub-elements to be rendered into a Bitmap first. This means that sub-pixel rendering (ClearType) cannot take place and therefore the text

I do not understand what a convolution kernel is and how I would apply a convolution matrix to pixels in an image (I am talking about doing a Gaussian Blur operation on an image). Also could I get an explanation on how to create a kernel for a Gaussian Blur operation? I am reading this article but I cannot seem to understand how things are done... Thanks to anyone who takes time to explain this to me :), ExtremeCoder The basic idea is that the new pixels of the image are created by an weighted average of the pixels close to it (imagine drawing a circle around the pixel). For each pixel in the

No idea how to create transparent blurred background to canvas without bluring the canvas childrens too. This is the result I want - Blur the background but not the content: My Excuse Pardon my inexperience with Stackoverflow but I thought I would try and help you out a little. I didn't make this code, however seen as how this code isn't readily available to most people, here it is: using System; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Interop; namespace BlurBehindDemo { internal enum AccentState { ACCENT_DISABLED = 1, ACCENT_ENABLE_GRADIENT = 0, ACCENT

I am looking for a "very" simple way to check if an image bitmap is blur. I do not need accurate and complicate algorithm which involves fft, wavelet, etc. Just a very simple idea even if it is not accurate. I've thought to compute the average euclidian distance between pixel (x,y) and pixel (x+1,y) considering their RGB components and then using a threshold but it works very bad. Any other idea? Don't calculate the average differences between adjacent pixels. Even when a photograph is perfectly in focus, it can still contain large areas of uniform colour, like the sky for example. These will

So I'm trying to blur an image as fast as possible(instant feel like), as the activity needs to be updated as I press the Blur button. The problem I am having is that, I cannot find a Blur that works quick enough... Note: The blur, preferably a Gaussian blur, doesn't need to be the best quality at all.. I tried out the following, but it takes a few seconds, is there anyway this code could be made to run quicker in sacrifice of quality ? Or are there any other alternatives? I would look into GPU stuff, but this blur is really just an effect related to the UI and only happens when I press open a

Is it possible to add a blur effect to an image using CSS and Javascript? Barrie Reader Yep, this works a treat : Pixastic is an experimental library which allows you to perform a variety of operations on images using just a bit of JavaScript. The effects supported out of the box include desaturation/greyscale, invert, flipping, brightness/contrast adjustment, hue/saturation, emboss, blur, and many more... Pixastic works by utilizing the HTML5 Canvas element which provides access to raw pixel data, thereby opening up for more advanced image effects. This is where the "experimental" part comes