Quick prototype demo for possible Sinden light gun improvement

Main > Lightguns

<< < (4/4)

RandyT:
Like I stated, this won't do it. Border not bright enough? Camera can't see it. Border not thick enough? Camera can't see it. So, if it has challenges just with that, it's more than a stretch to think that the camera would be able to accurately discern a black screen from a dark colored plastic frame in order to get any sort of decent reference for extrapolation.

With data processing "garbage in" always means "garbage out". That white frame is the best reference you can get. The only way to get rid of it is to find a way for the camera to see it, or an equally good alternative to it, and not the player. Hiding things on-screen is exactly the challenge which faced 3D displays. That's why viewers need to wear active shutter glasses and anyone not wearing them sees a mess on the screen.

There's only one way I can think that something like this might work, and that would be against a bare wall with IR strips back-lighting it. Then, with the aid of a second camera with an IR-pass filter and during the calibration, the software figures out the difference to provide the offset to the screen.

But honestly, if you are going to do that, you might as well just use IR beacons and draw virtual lines between them for the reference. As cheap as LED strips are nowadays, and the fact that they can be had in IR as well as pretty colors, it puzzles me as to why anyone serious about these setups isn't just using those for reference points. If done right, there are even ways for these to provide more information than just screen delineation.

TapeWormInYourGut:

--- Quote from: RandyT on September 28, 2022, 11:05:25 pm ---It's all theory, assumes perfection in the function of all components and ignores how things actually work in practice. If a camera can pick up subtle shade and color changes with pixel precision, then the border of the standard system wouldn't need to be a bright color. But it does. Cameras also get very noisy in low light conditions. Noise means inaccuracy. In fact, the troubleshooting wiki calls out a dim screen as a possible cause for jitter. In a perfect world, the camera should be able to pick up the subtle illumination of the leaked backlight in the black areas to define the screen. But this is not a perfect world.

And another thing standing in the way is that only LCD's use this type of polarization. What about OLED, CRT and Plasma screens? This suggestion simply adds more hardware and complexity, and hobbles display compatibility while IMHO, delivering zero gain.

--- End quote ---
Well I agree there. I didn't say it was possible, I was just trying to explain his idea. The amount of time needed to process the images would make this unfeasible for its cost. Frankly if we a back to adding IR borders, well we may as well stick with Gun4ir. Personally I've found it to be incredibly accurate no matter where I stand. The sight on my gun always lines up. Jaybee has created quite an impressive system.

Navigation

 Message Index

Go to full version