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  • Tesseract OCR in C#

    - by Tom Allen
    Just wondering if anyone has got a sample project or compliled dll of the tesseract ocr engine running in C#? I have tried going through the tessnet2 demo (here) but for some reason, I can't install the C++ stuff in my current VS2008 installation so can't build it. Thanks!

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  • ArgumentError: Error #2015: Invalid BitmapData.

    - by numerical25
    I am having problems loading a bitmapData. I am getting the following error Engine Init //trace loadimage//trace ArgumentError: Error #2015: Invalid BitmapData. at flash.display::BitmapData() Below is my code. it appears it happens after the trace loadimage package com.objects { import flash.display.Sprite; import flash.display.BitmapData; import flash.display.Bitmap; import flash.geom.Point; import flash.geom.Rectangle; import flash.display.Loader; import flash.net.URLRequest; import flash.net.*; import flash.events.*; import flash.display.LoaderInfo; public class gameObject extends Sprite { protected var w:Number; protected var h:Number; protected var image:BitmapData; protected var canvas:Bitmap; protected var px:Number; protected var py:Number; public function gameObject():void { init(); } private function init():void { } public function loadImage(imageDir:String, w:Number, h:Number, px:Number, py:Number):void { this.w = w; this.y = y; this.px = px; this.py = py; trace("loadimage"); var loader:Loader = new Loader(); loader.contentLoaderInfo.addEventListener(Event.COMPLETE,imageComplete); loader.load(new URLRequest(imageDir)); } private function imageComplete(e:Event):void { var loader:LoaderInfo = LoaderInfo(e.target); image = Bitmap(loader.content).bitmapData; drawImage(); } private function drawImage():void { var tilePoint:Point = new Point(0,0); var tileRect = new Rectangle(py,px,w,h); trace(loader.content); var canvasData:BitmapData = new BitmapData(w,h); trace("got canvas data"); canvasData.copyPixels(image,tileRect,tilePoint); trace("copied pixels"); canvas = new Bitmap(canvasData); } } } And my call the the method is like so balls = new Array(); balls[0] = new gameObject(); balls[0].loadImage("com/images/ball.gif", 15,15,0,0); When I trace the Loader.content, below is what shows Engine Init loadimage [object Bitmap] ArgumentError: Error #2015: Invalid BitmapData. at flash.display::BitmapData()

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  • Calling a javascript-method causes IE 8 to crash

    - by Andreas Niedermair
    good morning! some basic infos: engine is asp.net (specific version is not relevant) runs on iis (specific version is not relevant) asp-button is hidden why?! wtf?!: this example is used in some modal-confirmation: user clicks delete, ui shows modal-dialog. so, the visible button would be the yes-button, when clicked one, would cause a postback of the original asp-button (as i'm using the jquery-dialog plugin). and i have this html: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> // head tags go here </head> <body> <div style="display: none;"> <asp:Button runat="server" ID="hiddenBt" /> </div> <button id="visibleBt">Yes</button> <script type="text/javascript"> $(document).ready(function() { var visibleButton = $('#visibleBt'); var hiddenButton = $('#<%= this.hiddenBt.ClientID %>'); visibleButton.click(function() { __doPostBack(hiddenButton.attr('name'); }); }); </script> </body> </html> so ... if i'm running IE8 and non-compatiblity view, hitting the yes-button will crash the ie8-rendering-engine Version=1 EventType=MSHTMLLAYOUTHARDASSERT EventTime=129197590067237499 Consent=1 UploadTime=129197590067257499 ReportIdentifier=4b752ddb-6c79-11df-8bf6-001aa0b266a7 WOW64=1 Response.BucketId=1064991109 Response.BucketTable=5 Response.type=4 Sig[0].Name=AppName Sig[0].Value=iexplore.exe Sig[1].Name=AppVer Sig[1].Value=8.00.7600.16385 (win7_rtm.090713-1255) Sig[2].Name=ModName Sig[2].Value=mshtml.dll Sig[3].Name=ModVer Sig[3].Value=8.00.7600.16385 (win7_rtm.090713-1255) Sig[4].Name=Offset Sig[4].Value=0x002B5031 DynamicSig[1].Name=OS Version DynamicSig[1].Value=6.1.7600.2.0.0.256.48 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=3079 State[0].Key=Transport.DoneStage1 State[0].Value=1 FriendlyEventName=Webpage display problem ConsentKey=MSHTMLLAYOUTHARDASSERT AppName=Internet Explorer AppPath=C:\Program Files (x86)\Internet Explorer\iexplore.exe ReportDescription=A problem displaying a webpage caused Internet Explorer to refresh the page using Compatibility View. any help would be appreciated!

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  • What does error 0xC02020C4 mean in SSIS?

    I get this error with this description. Error: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED. The PrimeOutput method on component "OLE DB Source" (1) returned error code 0xC02020C4. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure.

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  • What is best practice as far as using perl-isms (idiomatic expressions) in Perl?

    - by DVK
    A couple of years back I participated in writing the best practices/coding style for our (fairly large and often Perl-using) company. It was done by a committee of "senior" Perl developers. As anything done by consensus, it had parts which everyone disagreed with. Duh. The part that rubbed wrong the most was a strong recommendation to NOT use many Perlisms (loosely defined as code idioms not present in, say C++ or Java), such as "Avoid using '... unless X;' constructs". The main rationale posited for such rules as this one was that non-Perl developers would have much harder time with the Perl code base otherwise. The assumption here I guess is that Perl code jockeys are rarer breed overall - and among new hires to the company - than non-Perlers. I was wondering whether SO has any good arguments to support or reject this logic... it is mostly academic curiosity at this point as the company's Perl coding standard is ossified and will never be revised again as far as I'm aware. P.S. Just to be clear, the question is in the context I noted - the answer for an all-Perl smaller development shop is obviously a resounding "use Perl to its maximum capability".

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  • C# - Kinetic scrolling with ListBox or ListView?

    - by fonix232
    I am doing a simple application for touch screen devices, and I would like to implement today's fashion: kinetic scrolling. Is it possible to do, and if yes, how? PS: Kinetic scrolling: A scrolling mechanism where you don't use a scrollbar to scroll the content, but you touch the list itself, and pull and push it. The "physics engine" then counts out the speed, and stops based on the given settings.

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  • how to replace latex macros with their definitions (using latex)

    - by RamyenHead
    How can I replace all occurrence of user defined latex macros with their definitions? For example, given this file old.tex \newcommand{\blah}[2]{#1 \to #2} ... foo \blah{egg}{spam} bar ... how to generate the file below in an automatic way new.tex ... foo egg \to spam bar ... Instead of reimplementing latex macro logic with perl, can I use latex or tex engine itself to do this?

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  • How to use Bouncy Castle lightweight API with AES and PBE

    - by Adrian
    I have a block of ciphertext that was created using the JCE algorithim "PBEWithSHA256And256BitAES-CBC-BC". The provider is BouncyCastle. What I'd like to do it decrypt this ciphertext using the BouncyCastle lightweight API. I don't want to use JCE because that requires installing the Unlimited Strength Jurisdiction Policy Files. Documentation seems to be thin on the ground when it comes to using BC with PBE and AES. Here's what I have so far. The decryption code runs without exception but returns rubbish. The encryption code, String password = "qwerty"; String plainText = "hello world"; byte[] salt = generateSalt(); byte[] cipherText = encrypt(plainText, password.toCharArray(), salt); private static byte[] generateSalt() throws NoSuchAlgorithmException { byte salt[] = new byte[8]; SecureRandom saltGen = SecureRandom.getInstance("SHA1PRNG"); saltGen.nextBytes(salt); return salt; } private static byte[] encrypt(String plainText, char[] password, byte[] salt) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { Security.addProvider(new BouncyCastleProvider()); PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20); PBEKeySpec pbeKeySpec = new PBEKeySpec(password); SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithSHA256And256BitAES-CBC-BC"); SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec); Cipher encryptionCipher = Cipher.getInstance("PBEWithSHA256And256BitAES-CBC-BC"); encryptionCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec); return encryptionCipher.doFinal(plainText.getBytes()); } The decryption code, byte[] decryptedText = decrypt(cipherText, password.getBytes(), salt); private static byte[] decrypt(byte[] cipherText, byte[] password, byte[] salt) throws DataLengthException, IllegalStateException, InvalidCipherTextException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException { BlockCipher engine = new AESEngine(); CBCBlockCipher cipher = new CBCBlockCipher(engine); PKCS5S1ParametersGenerator keyGenerator = new PKCS5S1ParametersGenerator(new SHA256Digest()); keyGenerator.init(password, salt, 20); CipherParameters keyParams = keyGenerator.generateDerivedParameters(256); cipher.init(false, keyParams); byte[] decryptedBytes = new byte[cipherText.length]; int numBytesCopied = cipher.processBlock(cipherText, 0, decryptedBytes, 0); return decryptedBytes; }

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  • Problem with PHP/AS3 - Display PHP query results back to flash via AS3

    - by Dale J
    Hi, Ive made a query in PHP, and i'm trying to send the results back into Flash via AS3, but its throwing up this error Error: Error #2101: The String passed to URLVariables.decode() must be a URL-encoded query string containing name/value pairs. at Error$/throwError() at flash.net::URLVariables/decode() at flash.net::URLVariables() at flash.net::URLLoader/onComplete() Here is the relevant part of the PHP and AS3 code, including the query. The flash variable rssAdd is passed over to the PHP which it using it in the PHP query accordingly. $url = $_POST['rssAdd']; $query= SELECT title FROM Feed WHERE category = (SELECT category FROM Feed WHERE url =$url) AND url!=$url; $result = mysql_query($query); echo $query; Here is the AS3 code I've done so far. function recommendation(){ var request:URLRequest = new URLRequest("url"); request.method = URLRequestMethod.POST var recVars:URLVariables = new URLVariables(); recVars.rssAdd=rssAdd; request.data = recVars var loader:URLLoader = new URLLoader(request); loader.addEventListener(Event.COMPLETE, onComplete); loader.dataFormat = URLLoaderDataFormat.TEXT; loader.load(request); function onComplete(event:Event):void{ recommend.text = event.target.data; } } Any help would be most appreciated, thanks.

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  • html parsing in c#

    - by dasht
    hi, How can i parse values from the scoreboard of http://www.cricinfo.com/nzvaus2010/engine/current/match/423789.html Any help will be appreciated.

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  • Crystal Report not working on Windows server 2008

    - by gofor.net
    Crystal Report is working fine on local database,but its not working on windows server 2008 when i deployed it on IIS 7. I have run Crystal report run time also.I copied CrystalDecisions.CrystalReports.Engine.dll, CrystalDecisions.ReportSource.dll and CrystalDecisions.Shared.dll from C:\Program Files (x86)\Business Objects\Common\3.5\managed\dotnet2 into bin folder of my application.Still its not showing anything and not throwing any error also. It will be very kind if someone help me. Thanking you.

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  • php server talk

    - by abb
    How can I enable talk or speech on my PHP Server? Is there a language that has speech-classes that could help me, or do I need to use a text-to-speech engine?

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  • What is wrong with my PHP/MySQL code?

    - by James
    I am building a navigation menu which lists all my categories and subcategories. The problem is it returns only one of these and not all. I have the categories echoed inside the while loop so I'm not sure why it's only showing one result and not all: <?php $query = mysql_query("SELECT * FROM categories_parent"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; $childStatus = $row['child_status']; // if has child categories if ($childStatus == "1") { echo "<li class='dir'><a href='category.php?slug=$slug'>$name</a>"; echo "<ul id='dropdown'>"; $query = mysql_query("SELECT * FROM categories_child WHERE parent=$id"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } echo "</ul>"; echo "</li>"; } // if singular parent else { echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } } ?> My database tables: -- -- Table structure for table `categories_child` -- CREATE TABLE IF NOT EXISTS `categories_child` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `parent` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_child` -- INSERT INTO `categories_child` (`id`, `name`, `slug`, `parent`) VALUES (138, 'Britney Spears', 'category/celiberties/britney-spears/', 137), (136, 'Tigers', 'category/animals/tigers/', 136), (137, 'Horses', 'category/animals/horses/', 136), (135, 'Lions', 'category/animals/lions/', 136); -- -- Table structure for table `categories_parent` -- CREATE TABLE IF NOT EXISTS `categories_parent` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `child_status` int(1) NOT NULL DEFAULT '0', PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_parent` -- INSERT INTO `categories_parent` (`id`, `name`, `slug`, `child_status`) VALUES (137, 'Celiberties', 'category/celiberties/', 1), (138, 'TV Shows', 'category/tv-shows/', 0), (136, 'Animals', 'category/animals/', 1);

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  • Re-ordering child nodes in django-MPTT

    - by Dominic Rodger
    I'm using Ben Firshman's fork of django-MPTT (hat tip to Daniel Roseman for the recommendation). I've got stuck trying to re-order nodes which share a common parent. I've got a list of primary keys, like this: ids = [5, 9, 7, 3] All of these nodes have a parent, say with primary key 1. At present, these nodes are ordered [5, 3, 9, 7], how can I re-order them to [5, 9, 7, 3]? I've tried something like this: last_m = MyModel.get(pk = ids.pop(0)) last_m.move_to(last_m.parent, position='first-child') for id in ids: m = MyModel.get(pk = id) m.move_to(last_m, position='right') Which I'd expect to do what I want, per the docs on move_to, but it doesn't seem to change anything. Sometimes it seems to move the first item in ids to be the first child of its parent, sometimes it doesn't. Am I right in my reading of the docs for move_to that calling move_to on a node n with position=right and a target which is a sibling of n will move n to immediately after the target? It's possible I've screwed up my models table in trying to figure this out, so maybe the code above is actually right. It's also possible there's a much more elegant way of doing this (perhaps one that doesn't involve O(n) selects and O(n) updates). Have I misunderstood something? Bonus question: is there a way of forcing django-MPTT to rebuild lft and rght values for all instances of a given model?

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  • Visual Studio 2010: browse the web within VS?

    - by pcampbell
    Consider a developer who spends lots of time in Visual Studio. Hours are spent toiling on source code. Sometimes, he needs to search the web. Can you browse the web right within Visual Studio? Consider all modern versions and SKUs of Visual Studio. If so, are there any easy ways to launch that browser window? Are there any gotchas in terms of: CSS support rendering engine problems session/cookie problems

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  • book "Programming Role Playing Games with DirectX 2nd edition" and newer DirectX api

    - by numerical25
    I got the book "Programming Role Playing Games with DirectX 2nd edition" and I notice there are things in the book that are now considered deprecated. There is a whole Section on DirectPlay. And as much as I would like to avoid this section, I am afraid it might screw up the entire engine he is trying to build. So I was just curious to know even though DirectPlay is considered deprecated by XNA, and directX10. Is it possible to use it still in DirectX 9 ??

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  • MySql, InnoDB & Null Values

    - by pws5068
    Formerly I was using MyISAM storage engine for MySql and I had defined the combination of three fields to be unique. Now I have switched to InnoDB, which I assume caused this problem, and now NULL != NULL. So for the following table: ID (Auto) | Field_A | Field_B | Field_C I can insert (Field_A,Field_B,Field_C) Values(1,2,NULL) (1,2,NULL) (1,2,NULL) infinitely many times. How can I prevent this behavior?

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  • Accurate least-squares fit algorithm needed

    - by ggkmath
    I've experimented with the two ways of implementing a least-squares fit (LSF) algorithm shown here. The first code is simply the textbook approach, as described by Wolfram's page on LSF. The second code re-arranges the equation to minimize machine errors. Both codes produce similar results for my data. I compared these results with Matlab's p=polyfit(x,y,1) function, using correlation coefficients to measure the "goodness" of fit and compare each of the 3 routines. I observed that while all 3 methods produced good results, at least for my data, Matlab's routine had the best fit (the other 2 routines had similar results to each other). Matlab's p=polyfit(x,y,1) function uses a Vandermonde matrix, V (n x 2 matrix) and QR factorization to solve the least-squares problem. In Matlab code, it looks like: V = [x1,1; x2,1; x3,1; ... xn,1] % this line is pseudo-code [Q,R] = qr(V,0); p = R\(Q'*y); % performs same as p = V\y I'm not a mathematician, so I don't understand why it would be more accurate. Although the difference is slight, in my case I need to obtain the slope from the LSF and multiply it by a large number, so any improvement in accuracy shows up in my results. For reasons I can't get into, I cannot use Matlab's routine in my work. So, I'm wondering if anyone has a more accurate equation-based approach recommendation I could use that is an improvement over the above two approaches, in terms of rounding errors/machine accuracy/etc. Any comments appreciated! thanks in advance.

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  • undefined method `call' for LiquidView:Class

    - by user181186
    I trying to use Liquid template engine plugin , but I 'm getting the following error while controller tries to render a .liquid template . "undefined method `call' for LiquidView:Class" I installed it as a plugin according to http://wiki.github.com/tobi/liquid/getting-liquid-to-work-in-rails I using Rails 2.3.5 and Ruby 1.8.7. Does anyone had the same problem before ?

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  • Graphical sandbox for pathfinding

    - by vrode
    If you needed a clean and consistent sandbox for pathfinding what would you use? I want to experiment with different pathfinding algorithms by sending virtual units (robots) around obstacles on a geometric plane. But I don't need a feature overkill like a game engine or Flash might have, just an animated report and native collision detector. I prefer it to be scripted in python, but if there are java or C++ alternatives I would appreciate them as well.

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  • Does qt 4.5 have any skins?

    - by robUK
    Hello, I am developing for the first time using qt 4.5. I am developing a desktop app that will run on windows xp/vista. The client would like to have a skin that assemblies a softphone, or something similar. Does qt come with any skinning engine? Is it possible to create skins using qt? Many thanks,

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  • Fact or fiction: Webkit’s rendering performance is much lower when used in Qt

    - by Jen
    Using Qt’s Webkit implementation renders much slower than directly implementing the Webkit engine -- is this true or just a myth? From my own experience, I found the load time of a complex page about twice as long in Qt’s “Fancy Browser” example as it does in Google Chrome (which also incorporates a port of Webkit), but I hardly think that is a fair comparison. Any insights on this?

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  • Twitterbot/0.1,gzip(gfe),gzip(gfe)

    - by user342284
    I see a lot of this on my google app engine error log: 05-18 06:44AM 00.897 /NTp9 405 17ms 0cpu_ms 0kb Twitterbot/0.1,gzip(gfe),gzip(gfe) 128.242.241.133 - - [18/May/2010:06:44:00 -0700] "HEAD /NTp9 HTTP/1.1" 405 124 - "Twitterbot/0.1,gzip(gfe),gzip(gfe)" May I know what is this?

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