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• Has anyone ever had OpenCV work with Python 2.7 on MacOS 10.6?

  - by ?????

  I've been trying on and off for the past 6 months to get OpenCV to work with Python on MacOS. Every time there's a new release, I try again and fail. I've tried both 64-bit and 32-bit, and both the xcode gcc and gcc installed via macports. I just spend the past two days on it, hopeful that the latest OpenCV release, that appears to include Python support directly would work. It doesn't. I've also tried and failed to use this: http://code.google.com/p/pyopencv/ I've been using OpenCV with C++ or Microsoft C++/CLI for the past few years, but I'd love to use it with Python on a Mac because that is my primary development environment. I'd love to hear from anyone who's actually been able to get the opencv python examples to run under Mac OS 10.6, either 32 or 64-bit. My last attempt was to follow the instructions on this page http://recursive-design.com/blog/2010/12/14/face-detection-with-osx-and-python/ with a clean, fresh install of 10.6 on a 64-bit capable Mac. My PYTHONPATH is set, and I can see the cv library in it. But an "import cv" from python fails. Previously, the closest I've ever gotten (again, staring on a clean, fresh 10.6 install) was this: Python 2.7.1 (r271:86882M, Nov 30 2010, 10:35:34) [GCC 4.2.1 (Apple Inc. build 5664)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import cv Fatal Python error: Interpreter not initialized (version mismatch?) Abort trap thrilllap-2:~ swirsky$ I've seen a lot of folks answering similar questions here, but have never seen an definitive answer for it.

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• Need advice on C++ coding pattern

  - by Kotti

  Hi! I have a working prototype of a game engine and right now I'm doing some refactoring. What I'm asking for is your opinion on usage of the following C++ coding patterns. I have implemented some trivial algorithms for collision detection and they are implemented the following way: Not shown here - class constructor is made private and using algorithms looks like Algorithm::HandleInnerCollision(...) struct Algorithm { // Private routines static bool is_inside(Point& p, Object& object) { // (...) } public: /** * Handle collision where the moving object should be always * located inside the static object * * @param MovingObject & mobject * @param const StaticObject & sobject * @return void * @see */ static void HandleInnerCollision(MovingObject& mobject, const StaticObject& sobject) { // (...) } So, my question is - somebody advised me to do it "the C++" way - so that all functions are wrapped in a namespace, but not in a class. Is there some good way to preserve privating if I will wrap them into a namespace as adviced? What I want to have is a simple interface and ability to call functions as Algorithm::HandleInnerCollision(...) while not polluting the namespace with other functions such as is_inside(...) Of, if you can advise any alternative design pattern for such kind of logics, I would really appreciate that...

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• Detecting well behaved / well known bots

  - by Simon_Weaver

  I found this question very interesting : Programmatic Bot Detection I have a very similar question, but I'm not bothered about 'badly behaved bots'. I am tracking (in addition to google analytics) the following per visit : Entry URL Referer UserAgent Adwords (by means of query string) Whether or not the user made a purchase etc. The problem is that to calculate any kind of conversion rate I'm ending up with lots of 'bot' visits that are greatly skewing my results. I'd like to ignore as many as possible bot visits, but I want a solution that I don't need to monitor too closely, and that won't in itself be a performance hog and preferably still work if someone has javascript disabled. Are there good published lists of the top 100 bots or so? I did find a list at http://www.user-agents.org/ but that appears to contain hundreds if not thousands of bots. I don't want to check every referer against thousands of links. Here is the current googlebot UserAgent. How often does it change? Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

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• What happens when modifying Gemfile.lock directly?

  - by Mik378

  Since the second time of bundle install execution, dependencies are loaded from Gemfile.lock when Gemfile isn't changed. But I wonder how detection of changes is made between those two files. For instance, if I'm adding a new dependency directly into Gemfile.lock without adding it into Gemfile (as opposed to the best practice since Gemfile.lock is auto-generated from Gemfile), would a bundle install consider Gemfile as changed ? Indeed, does bundle install process compares the whole Gemfile and Gemfile.lock trees in order to detect changes? If it is, even if I'm adding a dependency directly to Gemfile.lock, Gemfile would be detected as changed (since different) and would re-erase Gemfile.lock (so losing the added dependency...) What is the process of bundle install since the launch for the second time ? To be more clear, my question is: Are changes based only from Gemfile ? That means bundler would keep a Gemfile snapshot of every bundle install execution number N and merely compares it to the bundle install execution N+1 ? Or none snapshot are created in bundler memory and bundler makes a comparison with Gemfile.lock each time to detect if Gemfile must be considered as changed.

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• How can I define an irregular area of the screen and find the closest point to the mouse in that area?

  - by JonathonG

  I'm looking for a method to define an area of the screen that the mouse cannot leave. I have been directed by rob mayoff, the answerer of this question, that I can use a Quartz Event Tap to detect mouse events. This puts me part of the way to the solution to THIS question. I need to define an irregular area of the screen, not just a rectangle, that the mouse cannot leave. I have been researching this and the only idea I can come up with is using a bitmap to define the irregular area, as it will be very oddly shaped. However, I am open to solutions other than using a bitmap. Since this must be done on a Mac, I've determined that I will have to use objective C / Cocoa . I need to know how to define the area and, equally importantly, how to find the closest point in the area to the mouse (so that I can move the mouse to it if the mouse tries to move outside of the area). This is similar to what the restricted area will look like: [edit:] Okay, I've come up with part of the answer to this. If I can do a basic (light-weight) point collision detection on the image mask, I can use a simple algorithm to detect the closest point to the mouse on the black area of the image. I could do this by calculating distance between a pre-defined point (P) inside the black area of the image and the target mouse position (T), taking the midpoint (M), then checking if the midpoint is inside or outside of the shape (black or white, respectively). If M is inside the shape, then move the P to M, otherwise move T to the M, continuously recalculate this until the distance between T and P is 1 pixel or less, then move the mouse to the final calculated position. All of that being said, I still need some way to test the position of the mouse against that same position on the bitmap (assume the bitmap is the same resolution as the monitor), and check if that point is black or white. All of this needs to be done in the background, without this application actually having focus, or the bitmap being visible... is this possible?

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• How to multi-thread this?

  - by WilliamKF

  I wish to have two threads. The first thread1 occasionally calls the following pseudo function: void waitForThread2() { if (thread2 is not idle) { return; } notifyThread2IamReady(); while (thread2IsExclusive) { } } The second thread2 is forever in the following pseudo loop: for (;;) { Notify thread1 I am idle. while (!thread1IsReady()) { } Notify thread1 I am exclusive. Do some work while thread1 is blocked. Notify thread1 I am busy. Do some work in parallel with thread1. } What is the best way to write this such that both thread1 and thread2 are kept as busy as possible on a machine with multiple cores. I would like to avoid long delays between notification in one thread and detection by the other. I tried using pthread condition variables but found the delay between thread2 doing 'notify thread1 I am busy' and the loop in waitForThread2() on thear2IsExclusive() can be up to almost one second delay. I then tried using a volatile sig_atomic_t shared variable to control the same, but something is going wrong, so I must not be doing it correctly.

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• Windows Server Backup "Reading Data; please wait..."

  - by Reafidy

  On windows Server 2008 R2 I have recently added the windows server backup (WSB) feature. Opening WSB I get the message "Reading Data; please wait...". This message fails to go away, even after leaving the server for over 12 hours. I also notice in the task manager that svchost.exe (username: networkservice) is using all available processing power. So I terminated that process and then WSB comes on-line. However after restarting the server and WSB the issue reoccurs. WSB also fails to recognize my store-in-go flash drive (2gb). What is the underlying problem here?

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• How to change contact picture in Windows 8 People app for linked contacts?

  - by Sergey

  I link contacts together in people app. Very usefull feature for me. But how can I change picture of contact? For example I link together Skype, Facebook and Gmail accounts of somebody and People app show me picture for example from Facebook for this contact. But I want set picture from Skype or Gmail. Or remove picture completely for example. Is it possible? I easily can do it on my Windows Phone 7.5, in same People app. Does Microsoft forget about this functional in windows 8?

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• RRAS on Windows Server 2012 box

  - by TerminalTox1n

  I'm trying to add the RRAS VPN roles into my server 2012 box. The error I am getting is: install-windowsfeature : The request to add or remove features on the specified server failed. Installation of one or more roles, role services, or features failed. One or several parent features are disabled so current feature can not be enabled. Error: 0xc004000d At line:1 char:1 + install-windowsfeature -name directaccess-vpn + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (@{Vhd=; Credent...Name=localhost}:PSObject) [Install-WindowsFeature], Exception + FullyQualifiedErrorId : DISMAPI_Error__Failed_To_Enable_Updates,Microsoft.Windows.ServerManager.Commands.AddWind owsFeatureCommand This box is running as a domain controller. Does anybody have any insight on having server 2012 running a domain controller and VPN endpoint on the same box? Thanks!

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• Cannot enable network discovery on Windows Server 2008 R2

  - by dariom

  I'm trying to enable the Network Discovery feature on a newly installed Windows Server 2008 R2 instance. The network connection is in the Home or Work profile (it is not domain joined). These are the steps I've followed: Within the Network and Sharing Center I select Change advanced sharing settings Then I select the Turn on network discovery option for the current network profile (Home or Work) I then click Save changes If I then go back to the Advanced sharing settings screen the Turn off network discovery option is selected and the machine is not visible to others within the Network node in Windows Explorer. Things I've checked: I can ping the server and connect to it using the machine name/IP address. The Windows Firewall has exceptions for Network Discovery for both Private and Public networks. File and Printer sharing is enabled and I can transfer files to/from the server by connecting to the server using a UNC path. What am I missing here?

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• Excel error "This workbook contains Excel 4.0 macros or Excel 5.0 modules"

  - by James

  I have a workbook that was protected via the Protect Workbook feature. It was sent to someone else to modify. When they sent it back, it was unprotected and when I try to reprotect it I get this error, "This workbook contains Excel 4.0 macros or Excel 5.0 modules. If you would like to password protect or restrict permission to this document, you need to remove these macros." I looked and there are no new macros in the edited file. The original file contained the same macros and it was able to be write protected, so I'm not sure why the modified file is having a problem. What are common causes and solutions for this error and does it make sense for the modified file to have the error when the original doesn't?

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• Zimbra vs. Kerio Connect

  - by rahum

  We've been a Kerio partner for years and have deployed much Kerio Connect. Now we're looking at beginning hosting groupware for our clients and are wrestling over the right backend. Kerio Connect is fantastic, but we have a couple gripes: Kerio is often weeks behind on releases to keep up with major Microsoft and Apple updates that break functionality or at least impede new Apple/Microsoft features in their desktop clients We've been worried that Kerio has a historical habit of corrupting Apple's Open Directory; we know this happened years ago, and have suspected it happening earlier this year There's always some one or two features that are buggy in Kerio, in every release. These usually aren't dealbreakers, just annoyances. Kerio does not have any kind of HA feature set How does Zimbra compare? What are your gripes? Thanks! noam

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• Should I enable "Intel NIC DMA Channels"?

  - by javapowered

  I have HP DL360p Gen8 646902-xx1 I'm trying to optimize my config for low latency trading. Should I enable "Intel NIC DMA Channels"? Will that help/affect my system? From HP doc: Added a new ROM Based Setup Utility (RBSU) Advanced Performance Option menu that allows the user to enable Intel NIC DMA Channels (IOAT). This option is disabled by default. When enabled, certain networking devices may see an improvement in performance by utilizing Intel's DMA engine to offload network activity. Please consult documentation from the network adapter to determine if this feature is supported.

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• Installing SSL Certificate for use in IIS7, installation "works", but cert listing disappears

  - by Matt

  Windows Server 2008 R2, IIS7. We have an SSL cert from Go Daddy. It's a wildcard cert, so it will work across subdomains (e.g. *.domain.com). I followed the instructions located at http://help.godaddy.com/topic/742/article/4801 for installing the certificate. I get to the IIS step, where I: Click on "Security Certificates" feature when the server is selected in the left pane Click on "Complete Certificate Request" Navigate to the .crt file on the file system Give it a "friendly" name, click finish The cert gets listed on the main pane now of this "Server Certificates" panel. But, if I refresh the page, or navigate away and come back, it's gone. And the cert is not listed as a viable binding when trying to bind a site to https. This seems like a pretty straight forward process, but clearly I'm missing something here. Any ideas?

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• Annotate pdfs in Firefox on mac-os

  - by Space_C0wb0y

  I have several pdfs stored locally. I have file:/// links to these pdfs in my local TiddlyWiki. When I open one of these, Firefox opens it inline, as expected. Now I want to add annotations to these pdfs as I read them. Since I have not found a way to do this when viewing them inline, I used the open in Preview feature in the context menu. This works fine, but when I want to save, Preview complains that the document is locked. It appears Firefox creates a temporary copy that it gives to preview to open, instead of the real thing. Is there any way to work around this? I want to either be able to save the annotated files from preview or to do the annotations directly in Firefox. I am using Snow-Leopard with Firefox 3.6. Edit I can annotate the pdf just fine when I open them in preview directly.

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• Vmconnect.exe on Windows7

  - by Xiuhtecuhtli

  I running Windows Server 2008 w/Hyper-V. The Network properly works and I can access the VM's From a Hyper-V enabled 2008 Machine. No problems there. BUT... I want to be able to connect to my Guest Machines from my Windows7 Pro Laptop. I was hoping it would be simular to copy/pasting VMCONNECT.EXE to my sys32 folder. But.. It Failed saying i did not have the proper feature installed. My Question to the Guru's of SuperUser, Is their a way to run VMCONNECT.EXE from a Windows7 client?

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• Set Firefox viewport size

  - by Frenk

  I thought this would be easy, but turns out it's not. I need to set the Firefox viewport size to a given value (larger than my screen resolution). What I want is not to enlarge the application window, but to enlarge the size available to the html content. The viewport won't be physically larger, but will "tell" the html that it is, so that webpages will take more space (obviously making scrollbars visible). For example, let's say my physical Firefox window is 800x600 px. I'd like to set "viewport size=2", then the available space for the html to render would be 1600x1200. Web Developer has a resize feature but it doesn't work when you set a size larger than your screen resolution (in Windows 7). Thanks in advance (I hope my explanation makes some sense).

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• Internet Explorer keeps asking for NTLM credentials in Intranet zone

  - by Tomalak

  Long text, sorry for that. I'm trying to be as specific as possible. I'm on Windows 7 and I experience a very frustrating Internet Explorer 8 behavior. I'm in a company LAN with some intranet servers and a proxy for connecting with the outside world. On sites that are clearly recognized as being "Local Intranet" (as indicated in the IE status bar) I keep getting "Windows Security" dialog boxes that ask me to log in. These pages are served off an IIS6 with "Integrated Windows Security" enabled, NTFS permits Everyone:Read on the files themselves. If I enter my Windows credentials, the page loads fine. However, the dialog boxes will be popping up the next time, regardless if I ticked "Remember my credentials" or not. (Credentials are stored in the "Credential Manager" but that does not make any difference as to how often these login boxes appear.) If I click "Cancel", one of two things can happen: Either the page loads with certain resources missing (images, styleheets, etc), or it does not load at all and I get HTTP 401.2 (Unauthorized: Logon Failed Due to Server Configuration). This depends on whether the logon box was triggered by the page itself, or a referenced resource. The behavior appears to be completely erratic, sometimes the pages load smoothly, sometimes one resource triggers a logon message, sometimes it does not. Even simply re-loading the page can result in changed behavior. I'm using WPAD as my proxy detection mechanism. All Intranet hosts do bypass the proxy in the PAC file. I've checked every IE setting I can think of, entered host patterns, individual host names, IP ranges in every thinkable configuration to the "Local Intranet" zone, ticked "Include all sites that bypass the proxy server", you name it. It boils down to "sometimes it just does not work", and slowly I'm losing my mind. ;-) I'm aware that this is related to IE not automatically passing my NTLM credentials to the webserver but asking me instead. Usually this should only happen for NTLM-secured sites that are not recognized as being in the "Intranet" zone. As explained, this is not the case here. Especially since half of a page can load perfectly and without interruption and some page's resources (coming from the same server!) trigger the login message. I've looked at http://support.microsoft.com/kb/303650, which gives the impression of describing the problem, but nothing there seems to work. And frankly, I'm not certain if "manually editing the registry" is the right solution for this kind of problem. I'm not the only person in the world with an IE/intranet/IIS configuration, after all. I'm at a loss, can somebody give me a hint?

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• Standard Protection:Prevent IRC communication

  - by awe

  I have McAffee virusscan on my work computer, and every time I start up, I get 2 log entries like this: Blocked by port blocking rule C:\Program Files\Skype\Phone\Skype.exe Anti-virus Standard Protection:Prevent IRC communication The difference between the two, is that at the end there are 2 different IP addresses (which I don't recognise as belongs to us) with port :6667 on one and :6669 on the other. Although this is logged, Skype seems to work as expected; including talking, chatting and screen sharing (new feature in Skype 4.1). Anyone knows anything about what this is? EDIT: I also have a Skype certified plugin in Skype called Cucku Backup. I did not find anything in the documentation that Cucku is trying to access these ports through Skype, but it could be...? EDIT2: I did a search on the IP addresses in question on www.webyield.net, and resulted in the following: IP 71.251.72.173 (this one used port :6667): Host name: pool-71-251-72-173.tampfl.fios.verizon.net IP 79.87.54.165 (this one used port :6669): Host name: 165.54.87-79.rev.gaoland.net

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• MDaemon vs Exchange (2007-2010). Which one should we choose ?

  - by Deniz

  We are at the verge of a mail server decision. We do currently use 2 mail servers : MDaemon 10 and Exchange 2003. We are planning to use a company and customer wide one point solution. Our main candidates are MDaemon 11 and Exchange 2007 or 2010. We would like to learn other users experiences on those solutions. The server-side experiences, the user-side experiences, feature set, TCO, support options etc. And if there were other solutions (like MDaemon 11 + Exchange or anything else) what would you suggest ?

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• Why does tracerpt use up all of my Sql Server's memory?

  - by Cypher

  We have a MS Sql Server 2008 machine with 12 GB of RAM... twice now within the last week this server was knocked on its backside by a process called "tracerpt.exe" which was found to have taken up ALL of the system's memory and leaving nothing for sqlserver. Done my homework, figured out what this program is... but still no idea why it's hogging up so much RAM (though I have an idea), nor what application is actually executing it. This server is the back-end to a Microsoft Dynamics CRM 4.0 application which is hosted on a separate server and is our production database used for just about everything. If this program is necessary, I would like to be able to find the application that is executing this thing and remove it or disable whatever feature is causing this quite annoying occurrence. Any ideas?

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• Unlimited and multi-computer online storage solutions with automatic backup

  - by JRL

  As the title says, what are the existing online storage solutions that provide: unlimited storage automatic backup and allow for an unlimited number of computers (use not tied to a single computer)? There are several existing questions on this site related to online storage solutions, but none that is specifically targeted to what I want, so I thought I'd ask the question. This wikipedia article lists some of them, are there others? How do they compare in terms of price, feature set and ease of use? Update: Kinda disappointed no one has any answers to this so far. JungleDisk looks promising, anyone have experience with it? Update 2: To answer the comments, what I'm looking for definitely DOES exist. These solutions all seem to fit the bill: BackMii CrashPlan DataPreserve Humyo JungleDisk KeepVault SpiderOak And some of them are quite cheap (CrashPlan is $100 a year). For unlimited space and computers, I'd say that's pretty good. Does anyone have experience with CrashPlan or any other of the above solutions?

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• Disable static content caching in IIS 7

  - by Lee Richardson

  I'm a developer having what should be a relatively simple problem in IIS 7 on Windows Server 2008 R2. The problem is that IIS 7 is overzealously caching all static content on the server. It's caching all .html and .js content and not noticing when the content changes on disk unless I iisreset. I've tried the following: Deleting the local cache in my browser (I'm 99% positive this is a server caching issue) In IIS Admin in OutputCaching adding an .html extension and unchecking "User mode caching" and unchecking "Kernel-mode caching" In IIS Admin in OutputCaching adding an .html extension and checking "User mode caching" and selecting the radio for "Prevent all caching" In IIS Admin editing Output Cache Feature settings and unchecking "Enable cache" and "Enable kernel cache under OutputCaching. Running "C:\Windows\System32\inetsrv\config\appcmd set config "SharePoint - 80" -section: system.webServer/caching -enabled:false" Looking through applicationHost.config and disabling anything related to caching I could find. Nothing seems to work. I'm getting very frustrated. Can anyone please help?

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• Pass --nogpgcheck to yum via puppet

  - by quickshiftin

  How would one get a --nogpgcheck option to yum via puppet? I've tried package { 'unsigned-package': ensure => latest, install_options => ['--nogpgcheck'], } and package { 'unsigned-package': ensure => latest, install_options => ['nogpgcheck'], } but looking at the output from an agent run, yum isn't getting that option. As an aside (and maybe the reason it's not working for me), how do I verify my puppet has the install_options feature? I'm running puppet 3.3.0-rc2.

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• ESXi and Windows Server CPU parking

  - by Chris J

  For those that don't know, CPU parking is a feature in recent Windows Server releases that allows Windows to pretty much drop a CPU core to zero use, and having nothing use it. It's been introduced as a power-saving measure. There's more detail about it here, amongst other places. However what I'm curious about is whether this matter on a virtualised guest - or is CPU parking more of a hindrance than a help, given that the physical CPUs are managed by ESXi, not Windows, and that a parked CPU is less likely to deal with traffic unless the scheduler deems there's enough work to unpark the CPU? I've not found anything about this - I do suspect it will be very much based on a given workload, but I've not seen any discussion (unlike, say, whether hyper-threading has any effect, which seems to be discussed regularly). Whilst I do understand the "test with your workload" I was wondering if there was any advice/guidelines out there that I've missed.

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