Hey guys it's john from lazy ninja productions and I'm out at at the alamo city comic con
2017 running laser marquee for the people coming in to the event.
So what I figured out what to do is kind of do a very very different kind of tutorial.
I'm in a kind of unique situation.
I just sold off all of my really high-powered lasers, so with the laser marquee I needed
to bring out a couple, two and a half watt lasers that I'm actually double stacking and
aligning.
So I can get somewhat more brightness than I would with just a single projector.
So this is a trick I learned from way back in the day, when I used to work with 3 gun
crt projectors.
And we would not only have to align all three of those...people are excited for this tutorial
what can I say umm...yes so this is a trick I learned back in the day, when not only when
we have to align all three guns on the crts, but we would also double stack those.
Something's still useful for like dlp projectors if you've got, a crosshatch pattern and compute
geometric correction.
So let's take a look at this first step - we're taking a look at the projection zone configuration
dialog inside of pangolin beyond.
The two zones and I'm going to be focused on here, are the main graphic zone and the
scanner two main.
All those are the two zones that I'm going to be overlapping with each other.
What I want to first do is select the alignment configuration or the alignment test pattern
for both main graphics and for the scanner two main.
So look at the wall.
I can actually see where my two patterns are projected on the wall.
Now the first step is to align the centers of the two images.
So I'm on, you know, my two zones that I'm using here are the main graphic zone and scanner
two.
Now I'm already set to position I've already adjusted the relative size.
I want my second scan zone to be slightly larger than my first one.
So what I'm going to do is I'm going to adjust the position and get the centers to line up
as much as possible.
So you're going to start to see, the centers come together.
And we'll kind of fine-tune this in here.
So I now have my one center line now, I'm going to adjust the left and right.
And this isn't going to be perfect - so I'm going to adjust this when I get to fine tuning,
geometric correction with the crosshatch pattern.
But the center x and the numbers are now roughly centered.
You can see that scan zone six, which is scanner number two, is slightly larger than scan zone
one.
Which is exactly what we want.
So that I have my four corners.
And I'm going to have the four corners match to the side.
So because my lower right corner is the trickier of the two right now, that'll be the first
one that we line up.
Next I'm going to do the same thing on the lower left corner.
Adjust this guy and this time I'm going to use the keyboard to dial this thing.
Well this time I'm actually going to drag it a little bit with the mouse, so it's slightly
lined up and then I'm going to fine-tune it with the keyboard.
Now same thing with my top left in my top right corner.
We're going to select the point we're going to eyeball it in with the mouse.
Get it into roughly the right position and then we are now going to walk it in with the
keyboard.
The idea being that you want the dots in the corners to line up as much as possible.
We're not too worried about the full side alignment because we will adjust those when
we get to the actual detail points, when we move the across edge.
And now the last one is going to be the top-right corner.
And we will walk this guy in, walk this guy in, and we've got a good ballpark approximation.
Now that we've got all four corners matched up, now we're going to come over and change
from our basic alignment to our crosshatch.
Now we have a crosshatch on all four corners.
Come back to my secondary scanner.
We could take a look here.
And the idea is you could see that we've got a lot of around the camera, looks like there's
a lot of flicker, but actually that's not too bad.
But we'll start with the one by one pattern and that will give us a chance to fine-tune
our corners.
So I'll start with the lower left.
And lower left I'm going to just walk in with my mouse or with my my arrow keys on my keyboard.
And you want to eyeball this, really focus on the area that you're working on, because
when this comes together you'll see it almost click with your eyes.
You'll see a lot of flicker and then all of a sudden the flickering will stop.
So you can kind of see it's even visible in the camera the lower left order looks fairly
solid.
We'll do the same thing now lower right corner.
And a little bit of a flicker I'm going to walk it in.
So now with all four corners really dialed in with the crosshatch pattern, I'm going
to come back to my 3x3 pattern.
And this gives me a chance to really adjust several new areas that weren't in the pattern
before.
Center top, top center left center, right center and lower center.
This will give us a cross pattern that we can kind of adjust.
So let's do this in the cooking show format and I'm going to adjust those real quick.
And now cooking show format wise, I have my top left right and bottom adjusted.
Now it's again, it's kind of hard to tell because the refresh rate on the camera.
The trick is really to let your eyes relax.
While you're looking at the lines with what you'll see is, you'll see a lot of flickered
a lot of jumping.
When you relax your eyes and you actually get both of both areas aligned correctly,
it will literally just kind of pop and click into place.
So yeah there's no real way, sorry I'm using a cell phone camera, there we go that's kind
of better so we don't have as much flicker, but now I'm going to go ahead and switch this
over.
We're going to take a look at the 5 by 5 pattern, which is going to give us several new areas.
So now you see, we've gotten all the new areas of the 5x5 aligned.
I had to go back again, because every little adjustment that you make, is going to affect
the overall image.
So as I was making those adjustments I did have to go back and readjust my corners and
readjust my top, left, right and bottom centers.
But now we've got a pretty good image.
Not a whole lot of fine-tuning I need to do, but it's still worthwhile to point out.
You know fine tuning with the 9 by 9 pattern.
Now I've pretty much got geometric capabilities all over my entire grid.
So my 9 by 9 crosshatch now that this is probably the most fine-tune this is going to get.
I'm going to go ahead and start with the top left and kind of go over all the intermediate
areas between, you know that have now just been reintroduced and fine-tuned.
So after a lot of persistence and trial and error, we now are readied up and running.
This is both zones actually overlap over each other.
You know so you can see we now we don't have a whole lot of shadowing or you know it's
hard to tell, with the scan rate again on the phone, but not a whole lot of flicker
or anything like that, I mean it it's a pretty solid image.
There's no line doubling or anything like that.
So we're running through all the different game of thrones sigils here, you know for
the people that are game of thrones fans.
You know but overall that's the that's all it really took to get that up and going.
So hope you guys enjoy the tutorial.