Open TV time, right click the screen and choose "InputĬonfiguration", and then click "Change Video Source" until "Composite 1" Once that is set up you can install TV Time from the Synaptic Package Pinnacle card working on my Ubuntu system I needed to install Need to download the drivers/firmware for your device. Ubuntu users - If you are using a video capture card you will Select your capture card under the "Digitizers" menus. Is good (and free) software for viewing camera input that will also If you are using a video capture card you will most likely have to set your video input mode to 'composite' (if you are seeing static or television then this is most likely the problem). This is a good time to test if your camera and capture card system are working properly. Plug in theĬamera to the power supply, and connect the video capture to the computer using the USB cable. Use the RCA cable to connect the camera to the video capture card (with some cameras you made need a coaxial to RCA adapter). The edges of the camera frame should roughly match that of the writing surface. The camera should be centered, perpendicular and roughly 28" from the writing surface. To keep it from moving around (small notches cut into the acrylic would have been a more elegant solution). Once it's in place I use a couple small pieces of masking tape on the corners of the acrylic eps to cut the pieces out directly.Īssemble the pieces as shown in the photo above. Lastly, if you have access to a laserĬutter you can use the. eps file in any vector based drawing program and translate the dimensions to the foam board. jpg file is at 1:1 scale, so one option is to print it out and trace it onto the foam board. This file can be used to quickly reproduce the shapes pictured above. Black foam board works best if available. For added stability buy thicker foam board, or stick two sheets together. The system I am using here is designed to be quickly taken apart and packed flat so that it can be carried aboard airplanes. In the end all you need is a horizontal surface with the camera behind it centered at roughly 28" (depending on the camera lens) behind the writing surface. The details of the capture enclosure system are not that important. You can test your computer by launching the application and checking that the framerate (listed in the lower left corner) is 30fps or higher. Computer: Any relatively good / recent computer should work. If your light source is bright enough you can use common A3 computer paper, if not try something less opaque such as tracing paper. Paper: Any size that will fit on the 26" x 20" surface. Foam board: 3 large sheets (6 for double ply and added stability). DC power source: For powering the camera. RCA cable: For connecting the camera to the video capture USB cable: For connecting the video capture card to the I am using a Watec 221S, however similar results can be achieved with much cheaper cameras (including web cams in a pinch). Cameras with manual focus, manual zoom and manual light control are ideal. Video Camera: Cameras with manual controls (as are common in many cheap security cameras) are better for tracking then most web cams which offer little control over focus and light input levels. Note: Some cameras may be able to to connect directly via firewire. For best results check the Open Frameworks forum. USBVision allows some PC capture cards to work in OSX. You will need a capture card that works with Open Frameworks applications: for PC most cards will work, for MAC it can a bit more difficult (I have heard that this one works well). Similar devices sell on ebay for less than $40. Save money by using older models that don't offer HD quality (since we won't be capturing in HD). Most devices built for watching TV on the computer will work. Video Capture Card: This is used to capture the video output signal from theĬamera. Small tri-pod: Needs to hold camera low to the surface (roughlyġ0" in height or less). Hand held light source: Any LED pen light or low power laser Step 4: Position Camera & Connect Devices An easier and less equipment heavy approach of using the software to capture graffiti motion data using a built in laptop web camera can be viewed here. This tutorial involves the use of an external video/cctv camera, which is better for motion tracking (especially in low light) than a web camera. This tutorial is a guide on how to motion capture graffiti tags into the Graffiti Markup Language (GML) format using the Graffiti Analysis 3.0 Capture software (available online for free on the DOWNLOADS page).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |