blur

问题 I have a column: header with text, body with image, footer with text, all widgets have transparent backgrounds. I want to set the background using a blur of the main image but I keep reaching dead ends. In some situations this would be straight forward but in my scenario the image could be of any size and aspect ratio, and I need the effect to be wrapped with the column. Here are my two failed attempts: Method 1 I have a Stack with the image as the first item, then a BackdropFilter with

问题 This seems not working? WriteableBitmap wb = new WriteableBitmap(albumArtImage); WriteableBitmapExtensions.Convolute(wb, WriteableBitmapExtensions.KernelGaussianBlur5x5); AlbumBackground.ImageSource = wb; 回答1: Try: WriteableBitmap wb = new WriteableBitmap(albumArtImage); var wb2 = WriteableBitmapExtensions.Convolute(wb, WriteableBitmapExtensions.KernelGaussianBlur5x5); AlbumBackground.ImageSource = wb2; 来源： https://stackoverflow.com/questions/14000616/how-to-use-writeablebitmapextension

问题 I wish for a movie clip to slowly blur over a couple of seconds. Is there some way to do this without using Tweener or some other external class? I only wish to use the tween class. The code I use at the moment is below, but this doesn't do it gradually, just turns the blur on like a switch: var blur : BlurFilter = new BlurFilter(); blur.blurX = 4; blur.blurY = 4; blur.quality = BitmapFilterQuality.HIGH; chrNicky.filters = [blur]; I need the blur to happen over the course of two seconds.

问题 Does anyone know how to achieve a gaussian blur effect on an UIView in iOS6? Similar to twitter's #music app when the filter menu is open. (the background under the menu becomes blurred) 回答1: I wrote a library RWBlurPopover based on GPUImage that can achieve similar gaussian blur effect when presenting a popover. Supports both iPhone and iPad, and runs on iOS 5.1+. 来源： https://stackoverflow.com/questions/16182788/how-to-get-the-gaussian-blur-effect-on-a-uiview-in-ios6

问题 Any idea how to do it? I am drawing a rectangle that is supposed to be a half-transparent window. I managed to do the transparency by drawing a half-transparent texture, but I also want to blur whatever is under the window. Normally (eg. using GDI) I would create a bitmap of the area, blur it and paint it as the background of my window. With Direct3D I don't even know how to get the area with whatever is already rendered on it. Or even there can be a different approach, can't it. Please help.

问题 This question already has answers here : Why is this javascript function running without being called? (4 answers) Closed 5 years ago . So I only have 6 lines of code in my page.js file and they are: document.getElementById("desired").addEventListener("blur", gradeChange()); document.getElementById("calculate").addEventListener("click", gradeChange()); function gradeChange() { var dog = document.getElementById("desired").value; console.log(dog); } And in my page.html I have: <input id=

问题 This question already has answers here : Why is this javascript function running without being called? (4 answers) Closed 5 years ago . So I only have 6 lines of code in my page.js file and they are: document.getElementById("desired").addEventListener("blur", gradeChange()); document.getElementById("calculate").addEventListener("click", gradeChange()); function gradeChange() { var dog = document.getElementById("desired").value; console.log(dog); } And in my page.html I have: <input id=

问题 I'm trying to make a transparent JDialog, which blures what´s underneath it (for better readability). Already found this link, but there the contents of the dialog are blurred. Also I found this, but there everything (things underneath and contents of the Dialog) is blured and it's flickering. Here's a screenshot for better understanding: The top is what I already have and the bottom what I want to achieve. 回答1: After some testing it appears to be pretty tricky to get something like what you

问题 According to this answer I try to create a page where if the input field get focused than the height is scaled down small enough that the page will be not scrollable. If the input field lose the focus than everything is made back to the original state. I tried this technique without events only entering the code through the console and it worked like a charm, but after I bind these to events, everything is ruined. I realized that after I click into the input field and the binded function

问题 I am using opencv to detect person in live video feed. I need to save the image of the person detected. But here the person is not standing and is keeps moving due to which when I am about to save the image, it is saved in very blurry format, just like below image: As you can see the image is not very clear and has a lot of blurriness into it. Face is also not clear. Is there anyway we can remove the blurriness from image. Thanks 回答1: You can try sharpening the image using cv2.filter2D() and