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  • Track Pedestrians

    - by 2vision2
    I am using OpenCV sample code “peopledetect.cpp” to detect and track pedestrians. The code uses HoG for feature extraction and SVM for classification. Please find the reference paper used here. The camera is mounted on the wall at a height of 10 feet and 45 degree down. There is no restriction on the pedestrian movement within the frame. I want to track the detected pedestrians’ movement within the frame. The issue I am facing is pedestrians are detected only in the middle region of the frame as most of the features are not visible as soon as the pedestrian enters the frame region. I want to track each person’s movement in the entire frame region. How to do it? Is tracking required? Can anyone give any reference to blogs/codes?

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  • How to create a bookmark under "computer" in the Sidebar of the nautilus file manager in 12.04?

    - by Jiskya
    Somehow, I removed the Downloads bookmark in the Sidebar under "Computer". Is there any way I can make a new one? Possibly with the same icon? I still have my Downloads directory. I just don't have the bookmark under "Computer" anymore, and it has the ordinary folder icon. I know it's not the most significant question, but it's a question nonetheless. Also, I'm not sure, but it may be important to note that I'm using unity 2d.

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  • Regarding Standard Oxford Format for vlfeat sift

    - by Karl
    One of my upper classmen has gave me a data set for experimenting with vlfeat's SIFT, however, her extracted SIFT data for the frame part contains 5 dimensions. Recall from vl_sift function: [F,D] = VL_SIFT(I) Each column of D is the descriptor of the corresponding frame in F. F normally contains 4 dimensions which consists of x-coordinate, y-coordinate, scale, and orientation. So I asked her what is this 5th dimension, and she pointed me to search for "standard oxford format" for sift feature. The thing is I tried to search around regarding this standard oxford format and sift feature, but I got no luck in finding it at all. If somebody knows regarding this, could you please point me to the right direction?

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  • SQLAuthority News Were sorry but your computer or network may be sending automated queries. To pro

    I use multiple browser many times when I am working with multiple projects simultaneously. Often I use Google Reader to read few feeds. Recently, I faced the following error and this error will not go. I even restarted my computer and rebooted my network. I am confident that my computer does not have viruses or [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Automatic people counting + twittering.

    - by c2h2
    Want to develop a system accurately counting people that go through a normal 1-2m wide door. and twitter whenever people goes in or out and tells how many people remain inside. Now, Twitter part is easy, but people counting is difficult. There is some semi existing counting solution, but they do not quite fit my needs. My idea/algorithm: Should I get some infra-red camera mounting on top of my door and constantly monitoring, and divide the camera image into several grid and calculating they entering and gone? can you give me some suggestion and starting point?

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  • Triangulation & Direct linear transform

    - by srand
    Following Hartley/Zisserman's Multiview Geometery, Algorithm 12: The optimal triangulation method (p318), I got the corresponding image points xhat1 and xhat2 (step 10). In step 11, one needs to compute the 3D point Xhat. One such method is Direct Linear Transform (DLT), mentioned in 12.2 (p312) and 4.1 (p88). The homogenous method (DLT), p312-313, states that it finds a solution as the unit singular vector corresponding to the smallest singular value of A, thus, A = [xhat1(1) * P1(3,:)' - P1(1,:)' ; xhat1(2) * P1(3,:)' - P1(2,:)' ; xhat2(1) * P2(3,:)' - P2(1,:)' ; xhat2(2) * P2(3,:)' - P2(2,:)' ]; [Ua Ea Va] = svd(A); Xhat = Va(:,end); plot3(Xhat(1),Xhat(2),Xhat(3), 'r.'); However, A is a 16x1 matrix, resulting in a Va that is 1x1. What am I doing wrong (and a fix) in getting the 3D point? For what its worth sample data: xhat1 = 1.0e+009 * 4.9973 -0.2024 0.0027 xhat2 = 1.0e+011 * 2.0729 2.6624 0.0098 P1 = 699.6674 0 392.1170 0 0 701.6136 304.0275 0 0 0 1.0000 0 P2 = 1.0e+003 * -0.7845 0.0508 -0.1592 1.8619 -0.1379 0.7338 0.1649 0.6825 -0.0006 0.0001 0.0008 0.0010 A = <- my computation 1.0e+011 * -0.0000 0 0.0500 0 0 -0.0000 -0.0020 0 -1.3369 0.2563 1.5634 2.0729 -1.7170 0.3292 2.0079 2.6624

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  • How do I allow Ubuntu to use more space on my computer?

    - by anonymous
    Ubuntu currently won't use more than 4GiBs on my computer, but I need more space. My computer can hold much more than 4GiBs. How do I allow Ubuntu to use more? Please give step-by-step instructions in plain English. Update: I'm referring to my Ubuntu operating system. I installed it using Wubi through Microsoft Windows. I deleted Wubi from my Windows desktop after installation. All I want is to expand my Ubuntu operating system. I plan to gradually transition from Windows to Ubuntu and so I'll need to transfer more files and programs from Windows to Ubuntu in the future. Right now, I already need more GiBs for Ubuntu. I can barely use Ubuntu right now because there's almost no space left. I simply want Ubuntu to use what space I need it to use. People, please quit complicating this issue and inform me how to make Ubuntu use more space.

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  • Merging and splitting overlapping rectangles to produce non-overlapping ones

    - by uj
    I am looking for an algorithm as follows: Given a set of possibly overlapping rectangles (All of which are "not rotated", can be uniformly represented as (left,top,right,bottom) tuplets, etc...), it returns a minimal set of (non-rotated) non-overlapping rectangles, that occupy the same area. It seems simple enough at first glance, but prooves to be tricky (at least to be done efficiently). Are there some known methods for this/ideas/pointers? Methods for not necessarily minimal, but heuristicly small, sets, are interesting as well, so are methods that produce any valid output set at all.

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  • how do i install a game patch on an external hard drive

    - by shadow
    I have a 2tb external hard drive and I want to install battlefield 1942 on it. i can get the game on the hard drive without problems, and it runs great. the problem is that i have an outdated version, and i need to install a patch. thats when it gets iffy. i get the patch and start the install, and it finishes, but it doesnt install to the game itself. it goes to its own seperate folder, and that does nothing to the game. the patch installer doesnt ask me where the game is, and so im thinking that it cant find the game itself, and then screws up. any help would be great!

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  • Which Single Board Computer vendors do you recommend? [closed]

    - by jamiec
    We are a small company looking to run our software on devices with a Single Board Computer. We are deciding which vendor to go with. It would be nice to hear your recommendations. Doing a quick search for "Single Board Computer vendors" yields several options. WinSystems, Tri-M, etc. Based on your experience which of these companies do you recommend? We need to run Windows XPe. The board needs to be x86, with USB and ethernet interfaces. I agree that this is really close to off-topic. And almost like asking which car company do you like?

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  • problem with my laptop start up

    - by jabsy
    my laptop is starting up and produces the normal screen due to abrupt power failure and when i click to start normally or in safe mode, the blue screen splashes and then disappears and then it tries to reboot again and the same problem takes place. it was running on xp service pack 2. could anyone help

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  • How to setup a Wi-Fi 2-computer network with Internet sharing?

    - by Narek
    I have the following devices: Desktop Computer (Windows XP Professional) Laptop Computer (Windows Vista Home Premium) A USB modem that I want to connect to my Desktop computer (so my Desktop has Internet) And a Wi-Fi router (D-Link, model: DIR-300) that I want to use in order to create a connection between mentioned two computers to be able to share files and what is the most important thing to make my laptop to have access to the Internet. What steps I should do to have this system?

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  • What does a red icon in XP's "Unlock Computer" dialog mean?

    - by wikiti
    A user was working from home and had a colleague turn on her computer so she could remote desktop to it. All worked fine, but when she came into the office and used her computer for a while then locked it the computer icon had a red screen, instead of blue. Like in the following mockup: Mockup of red computer screen. It didn't cause any problems and it went away when she rebooted, but I was intrigued to find out whether there was something that caused it or if it was just a windows oddity. I believe she just closed the remote desktop session (without really logging off) from home and then disconnected from the VPN before coming to the office. Any ideas?

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  • How to discharge static electricity before opening a computer?

    - by Pekka
    Before opening a computer, I often hear advice to touch something that is "grounded" - a computer case for example, or a heating element - to avoid damaging the sensitive electronic equipment through static discharge. What exactly is true here, and what are the do's and don'ts. Touching what objects will actually work, and what won't? If I touch a computer case, does it matter what it stands on, and whether it is connected to an outlet? What other ways are there to protect the equipment from a static discharge than touching something grounded? Are there common pieces of clothing that I shouldn't be wearing when working inside a computer, for example a woollen pullover? There is a lot on Google, but there seem to be many contradictions and misconceptions out there, so I think this is a question worth having here.

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  • Any issues with computer on one domain in a separate forest and user account in another domain/forest?

    - by TheCleaner
    I have a few of my sites with a trust relationship among two different forests with a single domain in each AD forest. I'll skip all the politics and details that don't matter and just ask the question: Will having a machine with a computer account in one domain and their user account in another cause any issues? (besides GPO behavior that would need to be understood such as their computer getting a GPO applied from the computer's domain, and their user account getting a GPO applied from their user domain)

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  • Why is my NTP controlled computer clock two minutes ahead?

    - by Martin Liversage
    The clock in my computer is configured to be synchronized using NTP. To verify this I have tried two NTP clients using various NTP servers. My computer and the NTP clients are in complete agreement about the current time even across a wide range of NTP servers. I also have a GPS and my national phone company provides an accurate clock available by calling a specific phone number. Both my GPS and the phone company agrees on the current time. However, my computer is almost precisely two minutes (or 1 minute and 59 seconds) ahead of what I believe to be the "real" current time where I live. Why is my computer two minutes ahead? I realize that synchronizing clocks using the internet may not be entirely accurate as there is latency, but two minutes is a very long time on the internet. Is NTP really two minutes ahead? I'm running Windows 7 and live in the time zone UTC+1, but I don't think that is important in understanding my problem.

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  • How do you hide a computer name on a network? (OS X 10.6)

    - by George
    I regularly plug my Macbook Pro into a network at work, but because of the way Mac networking works, my computer's name instantly becomes available to any other Mac on the network. Is there a way to hide my computer's name so that I do not appear on the network list of other people's computers? Also, can I set this up so as a network specific profile? For instance, I would like my computer's name to show up on my home network, but not my work network.

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  • Sudden and frequent hangs on desktop computer: mobo or CPU fault?

    - by djechelon
    I have a desktop computer equipped with an ASUS Crosshair 2 Formula and a Phenom x6 3.2GHz CPU. My problem is that often the computer will hang all of a sudden, completely stopping responding. When that occurs, reset key is inoperative and power button turns the computer off but is unable to turn it back on. I have to physically disconnect power cable. The problem can occur anytime, when I'm booting Windows, when I'm logging in, when I'm listening to a song, when I'm browsing Internet, etc. It always occurs after very few minutes of 3D gameplay I thought it was a video card fault. I had 3 8800GTX so I could try all combinations of them: didn't fix I thought it was a RAM problem: I tried running with only a subset of my DDR2 banks but didn't fix. Almost every time I have to reset and reconfigure BIOS (without AHCI, Win7 won't boot, so I need to restore a few things). If I enable AMD Live, Cool&Quiet or other things from CPU configuration menu I'll be sure that the computer won't reach Windows desktop in 99% of cases (it randomly hangs somewhere in the boot process or even in the BIOS POST). Another interesting thing is that during the POST process the computer always takes unusually long time detecting USB devices (LCD POSTer shows USB INIT), and I've also tried disconnecting all USB devices but didn't take less time to POST BIOS revision is 2702, the latest. Today I found a different behaviour once: during boot screen I got a BSOD with error Stop 0x00000101 A clock interrupt was not received on a secondary processor within the allocated time interval, and this is usually related to overclocking, but I never overclocked my CPU. Judging from the description of my problem, hoping someone had the same and fixed, and since I don't have a spare CPU or motherboard for replacement, I'd like to ask if you think this is a problem with faulty CPU or faulty motherboard, and if I can perform additional tests (I mean software tests because of my lack of spare components) to identify the component to replace.

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  • How do I turn a shared computer back into a shared media drive?

    - by Brian Green
    There is an external hard drive that is set up as a shared media device for a TV. I tried to hook up my the library on my desktop as a shared media drive to watch movies from my computer on the TV. It worked for a little bit but about 5 seconds after getting into my computer the tv went blank and I couldn't access the external hard drive any more. When I checked on my computer the Hard drive was no longer a shared media device but now it was a computer on the network. How do I fix this and turn it back into a shared media device so I can access it on the TV?

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