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Simple Crosshair
Hi I am a rookie programmer who barely started using labview. I basically finished all my controls including the kinect so I was wondering if it was possible to add a simple + crosshair to the video camera feed. I have the camera directly to the router not cRio. So is there a way I can do this without to much complication.
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Re: Simple Crosshair
The simple way is to place tape on on the screen. When you open the driver user, the drive station will default to the same place every time.
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Is there a way I can program something..
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The first step is to open the Getting Started Window of LabVIEW. It is up when you first launch and it is available from the View menu. Create a project based on the Dashboard template.
When built, that code will create the same thing as the initial installation. There are a couple ways to add crosshairs. One, go to the panel, right click in open space and choose lines from the decoration palette.Place and size the lines, color them if you need to. You could use rectangles if you wanted thicker lines. The second approach is to add the lines into the image programmatically. Go to the diagram and find the loop near the top that Reads the MJPG and the next step it does is clear the overlays. Instead, you want to right click on the Clear and choose Replace Overlay and choose the Line function. Copy it and hook up another. Hook up the parameter values to describe the line endpoints and color. To test it, stop the other dashboard EXE and run your VI using the run arrow. To build it into an EXE, you go to the bottom of the project window, open the Build Specifications, and right click and Build. The resulting dialog will tell you where the EXE was saved. Copy it to the Program Files/FRC Driver Station folder and you are good to go. The DS will launch yours next time it starts up. Greg McKaskle |
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I did A similar technique last year. what I did was I used the "draw rectangle" overlay block twice, one for each crosshair. I did it this way so I could adjust the thickness... It also was linked to the tilt servo position so it would automatically rotate the image when the camera passed 90 degrees... it also changed the crosshairs to a set of parallel lines that could be used to line up with the minibot pole. |
Re: Simple Crosshair
You know the Kinect is only used during the first 15 seconds of the match, correct? I apologize if that seems a silly question.
HTH |
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Build Specifications -> FRC PC Dashboard right-click and choose BuildIt's going to put the new Dashboard in the project folder under builds. Something like: My Documents\LabVIEW Data\builds\FRC Dashboard Project\FRC PC DashboardYou can test it by running it from there, but for competition it'll need to get copied to the folder C:\Program File\FRC Dashboard There are several common variations:
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Re: Simple Crosshair
assuming you do dev on a separate computer, you just need to copy the three files that the build will spit out into the dashboard folder on your driver station.
If memory servers, its just in the x86 programs folder. |
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Thank you!!
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Is there a way to disable the snap-to-grid when drawing lines on the panel?
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Hit the <g> key to toggle it
Greg McKaskle |
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