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• Rendering WPF DrawingGroup to single ImageSource

  - by Xander

  Currently I'm using a System.Windows.Media.DrawingGroup to store some tiled images (ImageDrawing) inside the Children-DrawingCollection property. Well the problem is now, this method gets really slow if you display the entire DrawingGroup in an Image control, because my DrawingGroup can contain hundreds or even thousands of small images it can really mess up the performance. So my first thought was to somehow render a single image from all the small ones inside the DrawingGroup and then only display that image, that would be much faster. But as you might have figured out I haven't found any solution so simply combine several images with WPF Imaging. It would really be great if someone could help with this problem or tell me how i can improve the performance with the DrawingGroup or even use another approach. One last thing, currently I'm using a RenderTargetBitmap to generate a single BitmapSource from the DrawingGroup, this approach isn't really faster, but it makes the scrolling and working on the Image control at least a little smoother.

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• Warping Images using cvWarpPerspective Results in Some Parts of the images out of the viewable area

  - by Birkan Cilingir

  Hi, I am trying to stich two images together. In order to do so I extracted sift features and find matches on the two images using this C implementation. http://web.engr.oregonstate.edu/~hess/index.html After that I found the homography matrix using the matched points. http://www.ics.forth.gr/~lourakis/homest/ But if I use this Homography Matrix in "cvWarpPerspective" function, some of the parts of the image goes out of the viewable area (negative corrdinates). To solve this I tried to calculate the bounding box first by piping the four corners of the image through Homography matrix. And move the initial image then warp it. But this caused the warping result to change. Is there any way for warping an image and keeping it in the viewable area? I would appreciate any help. Thanks in advance...

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• How to upload images from iPhone app developed using Titanium

  - by Karthik.K

  Hi, I finally landed up in developing an iPhone app using Titanium Mobile. Now the problem I face is, Im able to run the app, and the app also sends the image to the server. But Im not able to see the file that got uploaded to the server. I have pasted the iPhone app's code to send image to the server and also, the PHP file that would receive the file from the app. var win = Titanium.UI.currentWindow; var ind=Titanium.UI.createProgressBar({ width:200, height:50, min:0, max:1, value:0, style:Titanium.UI.iPhone.ProgressBarStyle.PLAIN, top:10, message:'Uploading Image', font:{fontSize:12, fontWeight:'bold'}, color:'#888' }); win.add(ind); ind.show(); Titanium.Media.openPhotoGallery({ success:function(event) { Ti.API.info("success! event: " + JSON.stringify(event)); var image = event.media; var xhr = Titanium.Network.createHTTPClient(); xhr.onerror = function(e) { Ti.API.info('IN ERROR ' + e.error); }; xhr.onload = function() { Ti.API.info('IN ONLOAD ' + this.status + ' readyState ' + this.readyState); }; xhr.onsendstream = function(e) { ind.value = e.progress ; Ti.API.info('ONSENDSTREAM - PROGRESS: ' + e.progress+' '+this.status+' '+this.readyState); }; // open the client xhr.open('POST','http://www.myserver.com/tmp/upload2.php'); xhr.setRequestHeader("Connection", "close"); // send the data xhr.send({media:image}); }, cancel:function() { }, error:function(error) { }, allowImageEditing:true }); And here is the PHP code on the server: http://www.pastie.org/891050 I'm not sure where I'm going wrong. Please help me out in this issue. Would love to provide if you need some more information.

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• Breaking a captcha

  - by Fabiano PS

  What I'm looking for is a way to break this captcha: https://www.nfe.fazenda.gov.br/PORTAL/FormularioDePesquisa.aspx?tipoConsulta=completa Notice that the image alternates based on 2 types of images. Anyone knows a OCR (optical character recognition) 'damm good'for this? Other solutions also accepted (except proxing). I'm not looking for spamming, I just want to automatize my Software instead of proxing the image for the user. Nowhere in the site says it is forbidden to automatically parse the image.

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• How to specify behavior of Java BufferedImage resize: need min for pixel rows instead of averaging

  - by tucuxi

  I would like to resize a Java BufferedImage, making it smaller vertically but without using any type of averaging, so that if a pixel-row is "blank" (white) in the source image, there will be a white pixel-row in the corresponding position of the destination image: the "min" operation. The default algorithms (specified in getScaledInstance) do not allow me a fine-grained enough control. I would like to implement the following logic: for each pixel row in the w-pixels wide destination image, d = pixel[w] find the corresponding j pixel rows of the source image, s[][] = pixel[j][w] write the new line of pixels, so that d[i] = min(s[j][i]) over all j, i I have been reading on RescaleOp, but have not figured out how to implement this functionality -- it is admittedly a weird type of scaling. Can anyone provide me pointers on how to do this? In the worse case, I figure I can just reserve the destination ImageBuffer and copy the pixels following the pseudocode, but I was wondering if there is better way.

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• zend_barcode in MVC

  - by Joaquín L. Robles

  hi people, i just want an Action to print a barcode image, but i can´t get this working in MVC, i just do the following: public function barcodeAction() { $this->_helper->layout->disableLayout(); $this->_helper->viewRenderer->setNoRender(); Zend_Barcode::render($_GET['barcodeType'], 'image', $_GET, $_GET); } but when I call /barcode?barcodeType=code39&text=ZEND-FRAMEWORK I just obtain: "The image couldn't be displayed because it has errors" (or something like that, browser-dependant). Thanks!

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• SDL_image/C++ OpenGL Program: IMG_Load() produces fuzzy images

  - by Kami

  I'm trying to load an image file and use it as a texture for a cube. I'm using SDL_image to do that. I used this image because I've found it in various file formats (tga, tif, jpg, png, bmp) The code : SDL_Surface * texture; //load an image to an SDL surface (i.e. a buffer) texture = IMG_Load("/Users/Foo/Code/xcode/test/lena.bmp"); if(texture == NULL){ printf("bad image\n"); exit(1); } //create an OpenGL texture object glGenTextures(1, &textureObjOpenGLlogo); //select the texture object you need glBindTexture(GL_TEXTURE_2D, textureObjOpenGLlogo); //define the parameters of that texture object //how the texture should wrap in s direction glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //how the texture should wrap in t direction glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //how the texture lookup should be interpolated when the face is smaller than the texture glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //how the texture lookup should be interpolated when the face is bigger than the texture glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //send the texture image to the graphic card glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->w, texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, texture-> pixels); //clean the SDL surface SDL_FreeSurface(texture); The code compiles without errors or warnings ! I've tired all the files formats but this always produces that ugly result : I'm using : SDL_image 1.2.9 & SDL 1.2.14 with XCode 3.2 under 10.6.2 Does anyone knows how to fix this ?

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• Histogram equalisation of colour images with Java

  - by Tunji Gbadamosi

  I'm trying to histogram equalise a colour image with Java. At first I thought about applying the greyscale method to each RGB value, however, I've since learned that this would disrupt the colour distribution of the image. So, my question is: which is a better way to histogram equalise a colour image with Java?

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• If url exists Objective-c

  - by HiGuy Smith

  Hey, I have a program that needs to tell if an online image exists, but the only way that I've gotten this to work is by loading the image in a NSData pointer and checking if the pointer exists. - (BOOL)exists { NSString *filePath = @"http://couleeapps.hostei.com/BottomBox.png"; NSURL *url = [NSURL URLWithString:filePath]; NSData *imageData = [NSData dataWithContentsOfURL:url]; if (imageData) { return YES; } return NO; } This has worked for me, but my problem is that I have a very slow connection, and it takes forever to download the image. So my question is: is there a way to check if a image (say "http://couleeapps.hostei.com/BottomBox.png") is available without having to download it? Help is much appreciated HiGuy

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• Save a UIImageView using NSUSerDefaults

  - by Magician Software

  How do you save an Image using NSUSerDefaults The main image is set in IB, the secondary image is set here - (IBAction)changeImage { CATransition *fadeThing = [CATransition animation]; fadeThing.type = kCATransitionFade; fadeThing.subtype = kCATransitionFade; fadeThing.duration = 1; [CATransaction begin]; [background.layer addAnimation:fadeThing forKey:@"superCoolSloMoFadingAnimation"]; [background setImage:[UIImage imageNamed:@"Mainbackground.png"]]; [CATransaction commit]; I will have different actions for different images. Anyway of setting this up so I can use a toggle button maybe and change the image as well as save it Thanks

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• add elements to WPF Grid

  - by Konrad

  I wanted to make a function that populates a Grid in WPF with pictures. So I did that: private void setCellImage(Grid g, Image img, int column, int row) { Grid.SetColumn(img, column); Grid.SetRow(img, row); if (!g.Children.Contains(img)) g.Children.Add(img); g.UpdateLayout(); } And was using it by calling in that way: for (int i = 0; i < 15; i++) for(int j=0; j<15; j++) setCellImage(gameMap,background, i, j); But it wasn't working. it populated a grid only in cell 14,14 leaving all other cells blank. I thought that it may be my mistake that I should use another instances of Image but it wasn't that: private void setCellImage(Grid g, Image img, int column, int row) { Image _img = new Image(); _img = img; Grid.SetColumn(_img, column); Grid.SetRow(_img, row); if (!g.Children.Contains(_img)) g.Children.Add(_img); g.UpdateLayout(); } This thing is still not working.

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• OutOfMemory Exception on loading a number of small images

  - by Pavel Pyhtin

  Hi I'm trying to load about 600 small images into memory. Size of each image file is less then 2 KB (20 x 30). Thus all images are needs at most 5 MB in memory, even with additional information about size, format etc. But after 400th image Image.FromFile() throws OutOfMemory exception. So, what's the problem?

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• Detect if images have loaded in a UIWebView?

  - by Josh Gare

  Hey, I have a UIWebview that is loading an image. However I am trying to call a method when the image has completed loaded / rendered. I tried using UIWebViewDelgate and used, -(void)webViewDidFinishLoad:(UIWebView *)webView {} However this method is called before the image has loaded / rendered. How can I fix this. Any help would be greatly appreciated. Josh

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• How to embed images in a single HTML / PHP file?

  - by Tatu Ulmanen

  Hi, I am creating a lightweight, single-file database administration tool and I would like to bundle some small icons with it. What is the best way to embed images in a HTML/PHP file? I know a method using PHP where I would call the same file with a GET parameter that would output hardcoded binary data with the correct header, but that seems a bit complicated. Can I use something to pass the image directly in a CSS background-image declaration? This would allow me to utilize the CSS sprite technique. Browser support isn't an issue here, so more exotic methods are welcome also. EDIT Does someone have a link/example to how to generate Data URL's properly with PHP? I'd figure echo 'data:image/png;base64,'.base64_encode(file_get_contents('image.png')) would suffice but I could be wrong.

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• Uploading images from server using Php

  - by THOmas

  In my php application i have a folder in which all the photos are kept. The images are in different sizes.So i want to select photos from the folder and applying some image functions and upload to a different folder through php code. This is same as image uploading but the difference is that the source file is in server That is i want to select photos from server applying some image functions and upload again on the server Pls help me

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• ImageMagick Reflection

  - by dbruns

  Brief: convert ( -size 585x128 gradient: ) NewImage.png How do I change the above ImageMagick command so it takes the width and height from an existing image? I need it to remain a one line command. Details: I'm trying to programatically create an image reflection using ImageMagick. The effect I am looking for is similar to what you would see when looking at an object on the edge of a pool of water. There is a pretty good thread on what I am trying to do here but the solution isn't exactly what I am looking for. Since I will be calling ImageMagick from a C#.Net application I want to use one call without any temp files and return the image through stdout. So far I have this... convert OriginalImage.png ( OriginalImage.png -flip -blur 3x5 \ -crop 100%%x30%%+0+0 -negate -evaluate multiply 0.3 \ -negate ( -size 585x128 gradient: ) +matte -compose copy_opacity -composite ) -append NewImage.png This works ok but doesn't give me the exact fade I am looking for. Instead of a nice solid fade from top to bottom it is giving me a fade from top left to bottom right. I added the (-negate -evaluate multiply 0.3 -negate) section in to lighten it up a bit more since I wasn't getting the fade I wanted. I also don't want to have to hard code in the size of the image when creating the gradient ( -size 585x128 gradient: ) I'm also going to want to keep the original image's transparency if possible. To go to stdout I plan on replacing "NewImage.png" with "-"

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• Images not displayed in silverlight when app is run

  - by Sean

  I'm trying to display an image within a Silverlight application but the image does not display when the application is run. When creating the project within Visual Studio I chose the "Automatically generate a test page to host Silverlight at build time" option. Complete code as an example: <UserControl x:Class="SilverlightApplication3.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="400" Height="300"> <StackPanel> <Image Source="http://www.beachtownpress.com/db5/00415/beachtownpress.com/_uimages/beach7.jpg" /> </StackPanel> </UserControl> The application appears perfectly within Visual Studio, but when I run the application, the image does not display. Any ideas?

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• Need a explanation for the matlab code snippet

  - by Mask

  %# load a grayscale image img = imread('coins.png'); %# display the image figure imshow(img,[]); %# false-color colormap('hot') The above code is from here: http://stackoverflow.com/questions/2592755/infrared-image-processing-in-matlab/2592793#2592793 But I don't understand how figure(What's the difference with/without it?) and colormap(How does it affect the already shown img?) work?

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• On Mac, two jpg's whose color should match do not

  - by Tim

  So I'm designing a myspace page and I have two images, one is a repeating bg image, and another is an image which loads on a layer above it, which acts as a header/masthead. For some reason, on Macs only, and only in the browser (tested in safari and ff), the masthead renders slightly darker than the repeating bg image, creating this color inconsistency. The block that extends up behind the album artwork is a solid box made with css which blocks some of myspace's standard content. It actually renders as the proper color, blending in well with the bottom portion of this image, which is the repeating part of the background, but becomes noticeable as it extends up, over the masthead, which is darker than it should be. Both images where created in GIMP and saved as jpg's using, as far as i can tell, the same settings. Here's the pic of what is going on: Screenshot - Click Me!!! Here is the code which controls this part of the design. <div class="masthead"><span></span></div> .masthead {width: 1600px; height: 1940px; background-image:url(http://www.sourtricks.com/myspace/bdww/myspace_bg09.jpg); position: absolute; margin-left: -800px; left: 50%; top: 0px; z-index: -1; overflow-x: hidden;} body.bodyContent{ margin: 0 !important; padding: 0 !important; background-color: 000000 !important; font-size: 1px; background-image: url(http://www.sourtricks.com/myspace/bdww/bg_repeat05.jpg); background-position: center bottom; _background-position: right bottom; background-attachment: scroll; background-repeat: repeat-y; z-index: -2; overflow-x: hidden; font-family: arial, sans-serif !important; } Any help would be much, much, much appreciated. Thanks for your time, Tim

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• convert rgb 2 black & white in opencv

  - by mohammed

  i need to know the function that convert RGB image into black &white(binary image) & i need to know if i can save modified image after conversion on hard disk if so what's this function?

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• Silverlight MVVM Confusion: Updating Image Based on State

  - by senfo

  I'm developing a Silverlight application and I'm trying to stick to the MVVM principals, but I'm running into some problems changing the source of an image based on the state of a property in the ViewModel. For all intents and purposes, you can think of the functionality I'm implementing as a play/pause button for an audio app. When in the "Play" mode, IsActive is true in the ViewModel and the "Pause.png" image on the button should be displayed. When paused, IsActive is false in the ViewModel and "Play.png" is displayed on the button. Naturally, there are two additional images to handle when the mouse hovers over the button. I thought I could use a Style Trigger, but apparently they're not supported in Silverlight. I've been reviewing a forum post with a question similar to mine where it's suggested to use the VisualStateManager. While this might help with changing the image for hover/normal states, the part missing (or I'm not understanding) is how this would work with a state set via the view model. The post seems to apply only to events rather than properties of the view model. Having said that, I also haven't successfully completed the normal/hover affects, either. Below is my Silverlight 4 XAML. It should also probably be noted I'm working with MVVM Light. <UserControl x:Class="Foo.Bar.MyUserControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" mc:Ignorable="d" d:DesignHeight="100" d:DesignWidth="200"> <UserControl.Resources> <Style x:Key="MyButtonStyle" TargetType="Button"> <Setter Property="IsEnabled" Value="true"/> <Setter Property="IsTabStop" Value="true"/> <Setter Property="Background" Value="#FFA9A9A9"/> <Setter Property="Foreground" Value="#FF000000"/> <Setter Property="MinWidth" Value="5"/> <Setter Property="MinHeight" Value="5"/> <Setter Property="Margin" Value="0"/> <Setter Property="HorizontalAlignment" Value="Left" /> <Setter Property="HorizontalContentAlignment" Value="Center"/> <Setter Property="VerticalAlignment" Value="Top" /> <Setter Property="VerticalContentAlignment" Value="Center"/> <Setter Property="Cursor" Value="Hand"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Button"> <Grid> <Image Source="/Foo.Bar;component/Resources/Icons/Bar/Play.png"> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="Active"> <VisualState x:Name="MouseOver"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Source" Storyboard.TargetName="/Foo.Bar;component/Resources/Icons/Bar/Play_Hover.png" /> </Storyboard> </VisualState> </VisualStateGroup> </VisualStateManager.VisualStateGroups> </Image> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White"> <Button Style="{StaticResource MyButtonStyle}" Command="{Binding ChangeStatus}" Height="30" Width="30" /> </Grid> </UserControl> What is the proper way to update images on buttons with the state determined by the view model? Update I changed my Button to a ToggleButton hoping I could use the Checked state to differentiate between play/pause. I practically have it, but I ran into one additional problem. I need to account for two states at the same time. For example, Checked Normal/Hover and Unchecked Normal/Hover. Following is my updated XAML: <UserControl x:Class="Foo.Bar.MyUserControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" mc:Ignorable="d" d:DesignHeight="100" d:DesignWidth="200"> <UserControl.Resources> <Style x:Key="MyButtonStyle" TargetType="ToggleButton"> <Setter Property="IsEnabled" Value="true"/> <Setter Property="IsTabStop" Value="true"/> <Setter Property="Background" Value="#FFA9A9A9"/> <Setter Property="Foreground" Value="#FF000000"/> <Setter Property="MinWidth" Value="5"/> <Setter Property="MinHeight" Value="5"/> <Setter Property="Margin" Value="0"/> <Setter Property="HorizontalAlignment" Value="Left" /> <Setter Property="HorizontalContentAlignment" Value="Center"/> <Setter Property="VerticalAlignment" Value="Top" /> <Setter Property="VerticalContentAlignment" Value="Center"/> <Setter Property="Cursor" Value="Hand"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ToggleButton"> <Grid> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="CommonStates"> <VisualState x:Name="Normal"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="Pause"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="MouseOver"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="PlayHover"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Visible</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="Play"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> <VisualStateGroup x:Name="CheckStates"> <VisualState x:Name="Checked"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="Pause"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Visible</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="Play"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="PlayHover"> <DiscreteObjectKeyFrame KeyTime="0"> <DiscreteObjectKeyFrame.Value> <Visibility>Collapsed</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> <VisualState x:Name="Unchecked" /> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <Image x:Name="Play" Source="/Foo.Bar;component/Resources/Icons/Bar/Play.png" /> <Image x:Name="Pause" Source="/Foo.Bar;component/Resources/Icons/Bar/Pause.png" Visibility="Collapsed" /> <Image x:Name="PlayHover" Source="/Foo.Bar;component/Resources/Icons/Bar/Play_Hover.png" Visibility="Collapsed" /> <Image x:Name="PauseHover" Source="/Foo.Bar;component/Resources/Icons/Bar/Pause_Hover.png" Visibility="Collapsed" /> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White"> <ToggleButton Style="{StaticResource MyButtonStyle}" IsChecked="{Binding IsPlaying}" Command="{Binding ChangeStatus}" Height="30" Width="30" /> </Grid> </UserControl>

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• How does Content-Aware fill work?

  - by CiscoIPPhone

  The upcoming version of Photoshop a feature called Content-Aware fill. This feature will fill a selection of an image based on the surrounding image - to the point it can generate bushes and clouds while being seamless with the surrounding image. See http://www.youtube.com/watch?v=NH0aEp1oDOI for a preview of the Photoshop feature I'm talking about. My question is: How does this feature work algorithmically?

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• Rotating images with CSS and putting them back in place

  - by fuenfundachtzig

  When I rotate a large image with CSS -moz-transform: rotate(270deg); which sits in a floating div (using Firefox 3.6.3 to display the page), it messes up the page layout: Apparently, the size of the image is evaluated before it has been rotated. Furthermore, the image is displaced, partly being out of the screen, because the point it is rotated about is fixed. How can I improve this? (-moz-transform-origin doesn't help here.)

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• Problem with averaging corrupted images to eliminate the noise in MATLAB

  - by Mertie Pertie

  I want to average some .jpg images which are corrupted by zero-mean Gaussian additive noise. After searching around, I figured out to add the image matrices and divide the sum by the number of matrices. However, the resultant image is totally black. Normally when the number of image increases then the resultant image gets better. But when I use more images it gets darker. I am using 800x600 black and white .jpg images. Here is the script I used: image1 = imread ('PIC1.jpg'); image2 = imread ('PIC2.jpg'); image3 = imread ('PIC3.jpg'); image4 = imread ('PIC4.jpg'); sum = image1 + image2 + image3 + image4; av = sum / 4; imshow(av);

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• Averaging corrupted images to eliminate the noise

  - by Mertie Pertie

  Hi all As you can get it from the title, I want to average some .jpg images which are corrupted by zero-mean Gaussian additive. After searching over internet, I figured out to add image matrices and divide the sum by the # of matrices. However the resultant image is totally black. Normally when the number of image increases then the resultant image gets better. But When I use more images it gets darker. I am using 800x600 black and white images with .jpg ext Here is the script I used; image1 = imread ('PIC1.jpg'); image2 = imread ('PIC2.jpg'); image3 = imread ('PIC3.jpg'); image4 = imread ('PIC4.jpg'); sum = image1 + image2 + image3 + image4; av = sum / 4; imshow(av); Thanks in advance

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