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• System.Drawing.Image as source for asp.net image container

  - by trnTash

  I created image from byte array System.Drawing.Image newImage; using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length)) { ms.Write(imageBytes, 0, imageBytes.Length); newImage = System.Drawing.Image.FromStream(ms, true); } and now I need to have this image as a source for asp:Image (System.Web.UI.WebControls.Image). Is this possible as I know that conversion is impossible?

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• Is There a Center of the Universe?

  - by Akemi Iwaya

  From our earliest days mankind has debated what should be defined as the center of the universe, a ‘definition’ that continues to evolve as our technology and knowledge of the universe improves. Follow along with mankind’s historical progress on defining the center of the universe and learn some great facts about the debate with this terrific TEDEducation video. Is there a center of the universe? – Marjee Chmiel and Trevor Owens [YouTube]     

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• No Gentle Galaxy Collision

  - by Akemi Iwaya

  It is hard to imagine a more cataclysmic event than the collision of two galaxies and the effect such an event has on each one as they are ripped apart. See the destructive power of collision at work in this video showing the latest Hubble imagery of Arp 142, a.k.a. the collision of NGC 2936 and NGC 2937. Note: The video also shows stunning imagery of other colliding galaxies. No Gentle Galaxy Collision [YouTube]     

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• Enjoy 1.3 Billion Pixels of Mars Surface Panoramic Photography from the Curiosity Rover

  - by Akemi Iwaya

  Have you been waiting for more awesome photos of Mars’ surface from the Curiosity Rover mission? Then you are definitely going to love this bit of news! NASA and GigaPan have teamed up to create a truly inspiring 1.3 billion pixel panoramic view of Mars that you can ‘zoom around’ and explore at your leisure. There are two websites that you can visit to enjoy this awesome scenery: NASA’s official website with two viewing options…     

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• Titan – The Mystery of the Missing Waves

  - by Akemi Iwaya

  The moon Titan holds a unique distinction…it is the only other known ‘object’ in our solar system with a dense atmosphere and stable bodies of surface liquid. Unlike Earth though, there are no waves on Titan. This mystery has planetary scientists baffled and on a quest to understand this incredible phenomenon. Titan: The Mystery of the Missing Waves [YouTube]     

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• Which subjects in (theorethical) computer science matter the most in practice?

  - by Anto

  As you should know, computer science and software engineering aren't the same thing. My question is which subjects in computer science are (in your opinion) most important for software engineers and most applicable in practice? Please don't talk about "niche" areas of computer science (e.g. compiler construction) because of the usage of that inside that niche (e.g. helps you create compilers), but instead about areas which might be applicable and useful in a wide spectrum of software engineering problems and jobs (e.g helps you with parsing structured text).

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• Slick2D - Cannot instantiate the type Image

  - by speakon

  I am getting this strange error and I cannot for the life of me figure out why: Cannot instantiate the type Image CODE: import java.awt.Image; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.SlickException; import org.newdawn.slick.state.BasicGameState; import org.newdawn.slick.state.StateBasedGame; public class MainMenuState extends BasicGameState { int stateID = -1; Image background = null; Image startGameOption = null; Image exitOption = null; float startGameScale = 1; float exitScale = 1; MainMenuState( int stateID ) { this.stateID = stateID; } public int getID() { return stateID; } public void init(GameContainer gc, StateBasedGame sbg) throws SlickException { try { background = new Image("data/menu.jpg"); Image menuOptions = new Image("data/menuoptions.png"); startGameOption = menuOptions.getSubImage(0, 0, 377, 71); exitOption = menuOptions.getSubImage(0, 71, 377, 71); }catch (SlickException e) { System.err.print(e); } } public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException { } public void update(GameContainer gc, StateBasedGame sbg, int delta) throws SlickException { } } Why do I get this error? I've googled endlessly and nobody else has it, this worked fine in my other game. Any ideas?

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• How to extract image from PDF file

  - by studiohack

  I currently use Foxit's PDF reader, and I recently downloaded an image from the Internet, but it is inside a PDF file. How do I extract this image, in a high-quality, jpeg format? Operating system is Windows 7. Thanks!

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• Count the number of objects in an Image

  - by kunjaan

  I am investigating the possibility of image processing to identify certain objects and also count them in an image. I will be given a picture and I need to identify the number of boxes present in that image. Does anybody have any experience with any Machine Vision/ Image Processing libraries like ImageJ, Fiji, JAI, jMagick ,Java Vision Toolkit? Which do you think is best suited for the job? What do you guys suggest? If the APIs can be used from Java, it would be better. Thank you. Edit: I am dealing with warehouse brown boxes. Yes I am talking about regular photos. The source is usually a mobile phone picture.

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• Should certain math classes be required for a Computer Science degree?

  - by sunpech

  For a Computer Science degree at many colleges and universities, certain math courses are required: Calculus, Linear Algebra, and Discrete Mathematics are few examples. However, since I've started working in the real world as a software developer, I have yet to truly use the knowledge I had at once acquired from taking those classes. My question is: Should these math classes be required to obtain a computer science degree? Or would they better served as electives? A Slashdot post: CS Profs Debate Role of Math In CS Education

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• PHP Scale image and then create image of specific size

  - by Ronny vdb

  The result I am trying to achieve is that the user can upload an image of any size, and the server side script will convert it to an image that has the dimension 1024x512. To save the aspect ratio of the image I first scale the image down by either the width or height to match the wanted dimensions. to do this I am using imagecopyresampled(): imagecopyresampled( $new_img, $src_img, $dst_x, $dst_y, 0, 0, $new_width, $new_height, $img_width, $img_height ) && $write_image($new_img, $new_file_path, $image_quality); If we take an image that is 1920x1200 as an example, the outputted image will be 819x512. However I still need a final result of 1024x512 so I want to add white borders to the image to will the width to 1024. How can I correct my imagecopyresampled function to acheive this?

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• Error loading PCX image in FreeImage library

  - by khanhhh89

  I'm using FreeImage in C++ for loading texuture from the PCX image. My FreeImage code is as following: FREE_IMAGE_FORMAT fif = FIF_UNKNOWN; //pointer to the image data BYTE* bits(0); fif = FreeImage_GetFileType(m_fileName.c_str(), 0); if (FreeImage_FIFSupportsReading(fif)) dib = FreeImage_Load(fif, m_fileName.c_str()); //retrieve the image data bits = FreeImage_GetBits(dib); //get the image width and height width = FreeImage_GetWidth(dib); height = FreeImage_GetHeight(dib); My problem is the width and height variable are both 512, while the bits array is an empty string, which make the following OPENGL call corrupt: glTexImage2D(m_textureTarget, 0, GL_RGB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, bits); While debugging, I notice that the "fif" variable (which contains the format of the image) is JPEG, while the Image is actually PCX. I wonder whether or not the FreeImage recognize the wrong format (from PCX to JPEG), so tha the bits array is an empty string. I hope to see your explanation about this problem. Thanks so much

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• First Year Computer Science Programming Languages

  - by Jon

  I was reading this article earlier regarding C/C#/PHP being dropped as first languages in Advanced Level (pre-university) Computer Science courses: http://www.theregister.co.uk/2010/05/12/aqa_c_php/ It also goes on to say: Teachers planning to use Java are warned that many universities are considering dropping it from their first year computer science programmes, "as has happened n the US". Does anybody know, what the language predominantly used in US first year Comp Science programs is currently?

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• Image in Image Algorithm

  - by Paul

  I need an algorithm written in any language to find an image inside of an image, including at different scales. Does anyone know a starting point to solving a problem like this? For example: I have an image of 800x600 and in that image is a yellow ball measuring 180 pixels in circumference. I need to be able to find this image with a search pattern of a yellow ball having a circumference of 15 pixels. Thanks

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• Is a big name computer science degree worth the cost?

  - by Serplat

  I'm currently in High School and trying to look into what I want to do after I graduate. I know that I will be going to college, and that I want a degree in Computer Science, however, I'm not entirely sure where I want to go (I haven't started the application process yet). I already have built up a decent amount of experience in programming (over the summers I have been hired to program at a local university), and I'm pretty capable of teaching myself most of the material I've come across through either books or web documentation. I'm interested in whether it is worth it to get a degree from a major, big-name computer science university for $50,000 each year, as opposed to going to a local state school for only $20,000. For my Bachelor's degree alone, this would be $120,000 more than the state school. I've also heard that where you get your Bachelor's doesn't matter much if you plan to get a Master's degree. Many people recommend going somewhere like a state school for your Bachelor's, and then try to get into a more major school for your Master's. Has anybody found any truth in this? Basically, is going to a big name computer science school for a Bachelor's degree really worth the added expense?

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• Inline image and caption in article - conform caption's width to image's width

  - by Micah

  Here's my code: <div class="image"> <img src="image.jpg" alt="Image description" /> <p class="caption">This is the image caption</p> </div> Here's my CSS: .image { position: relative; float: right; margin: 8px 0 10px 10px; } .caption { font-weight: bold; color: #444666; } As is above, the caption will conform to the width of div.image. My problem is often the img varies in size, from 100px width to 250px width. I'd like to make the caption width conform to the corresponding width of the image, no matter the size. While I'd love for this to be more semantic as well, I'm not sure how easy it would be to switch p.caption with img. Of course, I'd prefer that method but am taking this a step at a time. Is there some jquery code that I can use to detect the width of the image and add that width as an inline style to the caption tag? Is there a better way to do this? I'm open to suggestions.

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• MS in Computer Science after BE in electronics

  - by Abhinav

  I am doing my 3rd year Bachelors in Electronics and Electrical Communication but from the first year I have been interested in Computer Science. But at that time it was just my hobby. But in second year when I joined robotics my love for computer science rose. I with my team came in top three in 2 National Competition (Technical fests of different IITs) where we used Image Processing, Hardware interfacing etc. But then I realised that Computer Science is not just about coding. I took many lectures from online free schools like Udacity, Coursera in subjects related to Artificial Intelligence, Building a Search Engine, Design and Analysis of Algorithm, Programming a Robotic Car, Programming Languages, Machine Learning, Software Engineering as a Service, WebApps Engineering, Compilers, Applied Crypotography etc. I also did some courses in Core and Advanced Java in my second year from training institute. I will also be taking course in Statistics, Databases, Discrete Mathematics from 25th June. Now I realized how vast is the field of Computer Science and how efficient you become on deciding algorithms and classifying problems into different subfields which have been thoroughly researched so you don't always do brute force thing or naive programming. Now this field has become kind of passion for me. Adding to the fact I am also doing my 6 months internship in software field in Texas Instruments where I am working on Automation and Algorithms. I also have some 5-6 good college level projects in Softwares and Robotics. I also like Electronics but only some fields like Operating System(this subject was there in Electronics also), Micro Processor, Digital, Computer Architecture, DSPs etc. I really want to pursue MS in some field of Computer Science. I am giving GRE in October/November. Till now I have good CG of around 9.4/10 and my 1 year in college is still left. Do I have any chance that some good University in US will consider me for MS in field related to computer science or Robotics. Also Can you suggest somethings that I can do during this 1 year to increase my chances for MS or should I apply for EECS(Electrical Engineering and Computer Science) and then I can shift more towards Computer Science as my major option. My main aim is to do Phd after Ms in CS if I am able to do that somehow. I know that I have to put much extra effort to understand things in MS than CS undergraduates but I will do that with my full dedication, also when I communicate with my college CS students or during my internship period I didn't feel that I am missing very much stuff that they know and was very comfortable during my internship with software employees.

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• Calculating length of objects in binary image - algorithm

  - by Jacek

  I need to calculate length of the object in a binary image (maximum distance between the pixels inside the object). As it is a binary image, so we might consider it a 2D array with values 0 (white) and 1 (black). The thing I need is a clever (and preferably simple) algorithm to perform this operation. Keep in mind there are many objects in the image. The image to clarify: Sample input image:

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• Displaying Image On SmallBASIC

  - by Nathan Campos

  I want to display a image using SmallBASIC. For this I've started by searching on the references, then I found a reference for IMAGE, that is like this: IMAGE #handle, index, x, y [,sx,sy [,w,h]] Then I found another to open files(OPEN): OPEN file [FOR {INPUT|OUTPUT|APPEND}] AS #fileN But I want to know some things: What image types this function can display? There is any real example to use IMAGE?

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• How do i resize image file to optional sizes

  - by shuxer

  Hi I have image upload form, user attaches aimage file, and selects image size to resize the uploaded image file(200kb, 500kb, 1mb, 5mb, Original). Then my script needs to resize image file size based on user's optional size, but im not sure how to implement this feature, For example, user uploads image with one 1mb size, and if user selects 200KB to resize, then my script should save it with 200kb size. Does anyone know or have an experience on similar task ? Thanks for you reply in advance.

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• Image Classification - Detecting an image is cartoon-like

  - by kingb

  I have a large amount of jpeg thumbnail images ranging in size from 120x90 to 320x240 and I would like to classify them as either Real Life-like or Cartoon-like. Are there any applications that will have cartoon classification capabilities? This application should work on Linux, and should take an image path on the command-line and return either 0 or 1 (echo $?).

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• Which library should I use for server-side image manipulation on Node.JS?

  - by Andrew

  I found a quite large list of available libraries on Node.JS wiki but I'm not sure which of those are more mature and provide better performance. Basically I want to do the following: load some images to a server from external sources put them onto one big canvas crop and mask them a bit apply a filter or two Resize the final image and give a link to it Big plus if the node package works on both Linux and Windows.

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• Multiple ToggleButton image with different highlight image in WPF

  - by Ryan

  I am very new to WPF and needed some pointers as to why this is not working correctly. I am trying to make a maximize button that will change to a restore button when clicked. I thought a toggle button with 2 different styles that would be changed in the code behind could work. I am first trying to get the maximize button working and have ran into a problem. I get the error 'System.Windows.Controls.Image' is not a valid value for the 'System.Windows.Controls.Image.Source' property on a Setter. in my xaml. I seem to be not understanding something completely. Any help would be most helpful :) Ryan <Style x:Key="Maximize" TargetType="{x:Type ToggleButton}"> <Style.Resources> <Image x:Key="MaxButtonImg" Source="/Project;component/Images/maxbutton.png" /> <Image x:Key="MaxButtonHighlight" Source="/Project;component/Images/maxbutton-highlight.png" /> </Style.Resources> <Setter Property="ContentTemplate"> <Setter.Value> <Image> <Image.Style> <Style TargetType="{x:Type Image}"> <Setter Property="Source" Value="{DynamicResource MaxButtonImg}"/> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Source" Value="{DynamicResource MaxButtonHighlight}"/> </Trigger> </Style.Triggers> </Style> </Image.Style> </Image> </Setter.Value> </Setter> </Style> <ToggleButton Name="MaxButton" Width="31" Height="31" BorderThickness="0" Click="MaxButton_Click" Margin="0,0,10,0" Tag="Max" Style="{DynamicResource Maximize}" /> My code behind would do something simple like this: private void MaxButton_Click(object sender, RoutedEventArgs e) { ToggleButton tg = (ToggleButton)sender; if ( tg.IsChecked == true) { tg.Style = (Style)FindResource("Restore"); this.WindowState = WindowState.Maximized; } else { tg.Style = (Style)FindResource("Maximize"); this.WindowState = WindowState.Normal; } }

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• J2ME Reduce Image color-depth/ Compress Image size

  - by updateraj

  Hi, I need to transmit the image from the mobile phone to the server. I am able to reduce the image screen size but not the memory size. I understand i have to deal with the color depth. J2ME does not seem to offer any scaling method which is available in J2SE: image rescaled = image.getScaledInstance(thumbWidth, thumbHeight, Image.SCALE_AREA_AVERAGING); BufferedImage biRescaled = toBufferedImage(rescaled, thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); How i would i tackle this ? I would like to reduce the image memory size before i transmit to the server. Thank you

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• Convert inline image tags like [image:123:title:size] into HTML img tags

  - by Jacques Joubert

  I am looking for help with regular expression $pattern to convert inline image tags like [image:123:title:size] into HTML img tags. here is the code: //[image:ID:caption:size] $content = '[image:38:title:800x900]'; preg_match_all( '/\[image:(\d+)(:?)([^\]]*)\]/i', $content, $images ); if( !empty( $images[0] ) ) { // There are image inline tags in the content foreach( $images[0] as $i => $tag ) { $link_ID = (int)$images[1][$i]; $caption = empty( $images[2][$i] ) ? '#' : $images[3][$i]; $size = empty( $images[4][$i] ) ? '#' : $images[4][$i]; } echo '<br />'; echo 'ID: '.$link_ID.'<br />'; echo 'Tag: '.$caption.'<br />'; echo 'size: '.$size.'<br />'; } which outputs: ID: 12 Tag: caption:size size: # Any help would be great!

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