Q1: Where do I submit Bug reports for the computer vision library?
A1: Send email to OpenCV@yahoogroups.com Subject: BUG (....your title...).

Q2: How do I submit bug reports for the Intel® Integrated Performance Primitives (Intel® IPP)?
A2: Please submit your bug reports via Intel® Premier Support. More information regarding account registration and product access can be found at Support Services FAQ.

Q3: How do I join the Web group for the library?
A3: Send email to OpenCV-subscribe@yahoogroups.com, after you are a member and select your logon, you can read the Web group at http://www.yahoogroups.com/group/OpenCV.

Q4: How do I modify the Web group so that I don't receive email everyday?
A4: To get the messages real time, or once a day as a daily digest, you can go to http://www.yahoogroups.com/mygroup and choose your setting from the pull down list to the right of OpenCV.

Q5: How do I get support for the Intel® Integrated Performance Primitives (Intel® IPP)?
A5: First, check the Intel IPP support Web site for information on top technical issues. You can also check the Intel IPP User Forum and participate in our online discussion group. Users of the Intel® Integrated Performance Primitives have the option to register for online support services via Intel® Premier Support during the registration process. More information regarding account registration and product access can be found at Support Services FAQ.

Q6: Is there a tutorial overview of OpenCV?
A6: Go to http://sourceforge.net/projects/opencvlibrary, and download "OpenCV courses" and/or the "HOW TOs-Tutorials".

Q7: I can’t seem to follow the links from this page outside of Intel.
A7: If you have the Google toolbar that blocks pop-ups, it will block opening a window to the linked source.

Q1: When I try to build one of the apps, I get an error, streams.h not found?
A1: You need the direct show SDK for streams.h. You do not need DirectX* SDK for NT* 4.0 to compile and run DirectShow filters. You need only DirectX Media* SDK (version 5.x or 6.x), that can be downloaded from http://microsoft.com/directx/homeuser/downloads/default.asp. This SDK can be used under NT 4.0 without any problem. Do not forget to put paths to the include subfolder and classes\base subfolder to include paths in DevStudio* (they should go first in the list!!!) and lib subfolder to lib paths in DevStudio.

Q2: I've installed the DirectX Media SDK, but get build problems.
A2: Do not forget to put paths to the include subfolder and classes\base subfolder to include paths in DevStudio (they should go first in the list!!!) and lib subfolder to lib paths in DevStudio.

Q3: Where can I find out about compatible USB Cameras?
A3: Look at http://web2.airmail.net/mprater/101/. There are a lot of USB camera (often called WebCams) links there.

Q4: When I build a filter graph with a USB camera, there are no output pins!? (Happens with Win2000* 3Com* camera).
A4: You can get the output pins to appear by selecting "refresh" from the graphedt.exe** menu.

Q5: How do you set the video format (e.g., resolution) of a WDM* video capture source camera within GraphEdit* (Filter Graph Editor)?
A5: Set the video format with the property page of the output pin of the capture source. Just click the right mouse button in GraphEdit on the output pin to display the property page. But make sure you do that before connecting the pin to other pins.

Q6: When I try to run an Intel® IPP program, I see the error message "No DLL was found in the Waterfall procedure." How do I resolve this?
A6: Please check the support Web site for information on how to resolve this error. If you still cannot resolve the problem, please submit an issue to Intel® Premier Support.

Q7: How do I register a directShow filter?
A7: Call up a command line prompt, cd to the directory the filter is in, run regsvr32 . Obviously, this will only work if regsvr32 is in your system path.

Q8: regsvr32 <filtername.ax> fails. What to do?
A8: Almost always means that some DLL the filter depends on is not being found in the local directory or the system path. If you have MSVC++* installed, you have a copy of a program called "depends.exe". Run this program on the offending filter. Missing DLLs will appear highlighted. Find these DLLs, move them to the local directory or system path and try regsvr32 again. Viola.

Q9: I get: LINK : fatal error LNK1104: cannot open file "cvd.lib" Error executing link.exe. Where can I get this lib from?
A9: It's the debug version of the library. Using MSVC++: Either: Under the Project menu, select Settings. Then select the Link tab and change the library to use to cv.lib; Or: Build a debug version of the library -- Under the build menu select "Set Active Configuration", click on "Debug" and the build all to build a debug version of cv.lib named cvd.lib. Another method is to just rename cv.lib to cvd.lib ... but you won't be able to debug.

Q1: Do you know, if there exist any Linux drivers for USB cameras and/or for Matrox MeteorII boards?
A1: USB on Linux is just now maturing, but is doing so very quickly. The best site to visit is (URL: http://www.linux-usb.org/). Of specific interest is the link (URL:http://www.qbik.ch/usb/devices/), which has a video section. For the Matrox MeteorII, there appears to be a driver for the Linux4Video2 system, which is a more advanced video system being developed in parallel with the Linux4Video(1), included in the kernel. Details at (URL:http://www.thedirks.org/v4l2/). See the "People" section for the driver. A downside with V4L2 is that it's not yet working under 2.3.x or 2.4.x of the Linux kernel.

Q2: I want a Linux* version of the Intel® Integrated Performance Primitives (Intel® IPP), where do I get this? A2: You can purchase or download a 30-day evaluation version of the Intel(R) IPP from the Intel IPP Web site.