bbigelow666666
Member
Greetings,
I'm a newbie to this forum...it looks like a great place with some like minded folk! I'm planning to do a projection on a large wall outside and need some help getting started in my research. Thanks a bunch in advance!
I need advice on what kind of projector to use and the appropriate video hardware and software necessary. But first...
Site information:
-The wall I'm projecting on is: 1249"W x 184" H. 104ft by 14 ft.
-Where I'm planning on installing the projectors is a 96 foot throw distance from wall to lens. The projector location would also be approximately 19 feet high (installed on a roof of an opposing building).
-I will be projecting at night, and there is a moderate amount of ambient light (is there a way to accurately measure this if necessary?). And a streetlight makes the right side of the building brighter. This does not worry me too much, as I might either block that light or incorporate it into the design of the video content. Still, it should be noted that the ambient light across the wall is not consistent.
Projectors?
From my research thus far it seems I need to use multiple projectors with edge blend them. Using 4 projectors with 16x9 aspect ratio, the vertical of the video would fit the vertical of the wall with appropriate overlap. (Image attached). In this scenario each projector would be throwing a 375" diagonal. (note: If you look at my image you can see the overlap I anticipated...is that about how much overlap is typically required for edge blending?)
However I think using 4 projectors is going to become too complicated, and I'm thinking of limiting it to 3. In this case each projector would need to throw a 500' diagonal. The image projected would be letterboxed, and I would loose about 33% resolution, which is OK with me. Image attached.
(note: I mocked this up by using after effects to create a composition of my wall in pixels to inches)
So what kind of projector do I need? Is there a projector calculator out there that works backwards? (Meaning I input the throw distance and screen size and it suggests an appropriate projector)
The question some may be wondering now is "what is this dude's budget?". As of now, I'm hoping to get these projectors loaned to me for free by a company. I'm a graduate student at a university that I'm hoping has some good technology hookups in the A/V world. So far, companies that I think I might have an in with are Panasonic, Epson and Optoma...but open to other suggestions. I'm in Palo Alto CA if anyone knows other projector manufacturers out here.
So I need something high lumen and with a lens capable of that throw distance. Also lens shift seems crucial to install it.
(sorry this is so long! but more always seems to be better than less in these forums)
Video Hardware:
For the video hardware and software I was planning on purchasing it myself and spending around $2,000-3,000. Is that appropriate? If there is a solution that is much more expensive I would still like to hear it, maybe the university can pull some strings. But I would prefer to avoid this and purchase within my budget.
I've never done work with edge blending projections. One thing I'm confused by overall: do the projectors need to have edge blending technology or is this something projection software on the computer can do? Or does both my computer software AND projector need to have edge blending technology?
The computer I will most likely have access to run the video is a Mac Pro. I don't have the exact specs on me, but I believe it's a quad core with 8gigs ram. Not sure of the graphics card, but I can get more info if necessary.
So one option for hardware I saw was this Matrox device: Matrox Graphics - Products - Graphics Cards - M-Series - M9138 LP PCIe x16
However it seems this ^ is only for PC?
Matrox also offers this: Multi Monitor Adapter for Maximum Performance | TripleHead2Go
But this ^ sounds dubious because it's using the existing GPU to render the graphics (I'm assuming the former Matrox product helps with added video RAM?). From my calculations, using 3 projectors at full HD (minus the 33% from letter box) I have to output a 5760x720 image. Is this even possible? Do I need to split up the projection onto multiple computers? If that high of a resolution becomes impossible, maybe I should use 720p projectors? This would also make creating the graphics easier too. (I will be creating the content on Aftereffects CS 5, which I know doesn't like big resolutions). But man do I like the look of big resolutions!
If a application for the PC platform is much easier, I may be able to acquire a PC for this project. However, I would prefer to stay Mac.
(my brain is really hurting, sorry if yours is too!)
Finally, what projection software do I need?
-Seems like I need video software that supports edge blending (unless the projectors take care of this?).
-I will also need something that allows for masking and projection mapping. The wall I'm projecting on actually slopes along the bottom with a difference of 10" on either side, so I'll need to adjust the image to fit the wall on site.
-I'm planning on having this running every night for a month. Would be great if the software could start and stop the projection at certain times. However I could automate this with other controlling software, I believe, so it's not a deal breaker.
-Again, I will be running OS X, unless a PC solution is preferred.
I've looked at Qlab, Isadora, Dataon and Green hippo, but it's all very confusing to me.
I think that's it.
Hopefully this wasn't to wordy. THANK YOU SO MUCH in advance for any advice you may have.
Best,
Ben
IMAGES:
(3 projector example)
View attachment 6266
(4 projector example)
View attachment 6265
I'm a newbie to this forum...it looks like a great place with some like minded folk! I'm planning to do a projection on a large wall outside and need some help getting started in my research. Thanks a bunch in advance!
I need advice on what kind of projector to use and the appropriate video hardware and software necessary. But first...
Site information:
-The wall I'm projecting on is: 1249"W x 184" H. 104ft by 14 ft.
-Where I'm planning on installing the projectors is a 96 foot throw distance from wall to lens. The projector location would also be approximately 19 feet high (installed on a roof of an opposing building).
-I will be projecting at night, and there is a moderate amount of ambient light (is there a way to accurately measure this if necessary?). And a streetlight makes the right side of the building brighter. This does not worry me too much, as I might either block that light or incorporate it into the design of the video content. Still, it should be noted that the ambient light across the wall is not consistent.
Projectors?
From my research thus far it seems I need to use multiple projectors with edge blend them. Using 4 projectors with 16x9 aspect ratio, the vertical of the video would fit the vertical of the wall with appropriate overlap. (Image attached). In this scenario each projector would be throwing a 375" diagonal. (note: If you look at my image you can see the overlap I anticipated...is that about how much overlap is typically required for edge blending?)
However I think using 4 projectors is going to become too complicated, and I'm thinking of limiting it to 3. In this case each projector would need to throw a 500' diagonal. The image projected would be letterboxed, and I would loose about 33% resolution, which is OK with me. Image attached.
(note: I mocked this up by using after effects to create a composition of my wall in pixels to inches)
So what kind of projector do I need? Is there a projector calculator out there that works backwards? (Meaning I input the throw distance and screen size and it suggests an appropriate projector)
The question some may be wondering now is "what is this dude's budget?". As of now, I'm hoping to get these projectors loaned to me for free by a company. I'm a graduate student at a university that I'm hoping has some good technology hookups in the A/V world. So far, companies that I think I might have an in with are Panasonic, Epson and Optoma...but open to other suggestions. I'm in Palo Alto CA if anyone knows other projector manufacturers out here.
So I need something high lumen and with a lens capable of that throw distance. Also lens shift seems crucial to install it.
(sorry this is so long! but more always seems to be better than less in these forums)
Video Hardware:
For the video hardware and software I was planning on purchasing it myself and spending around $2,000-3,000. Is that appropriate? If there is a solution that is much more expensive I would still like to hear it, maybe the university can pull some strings. But I would prefer to avoid this and purchase within my budget.
I've never done work with edge blending projections. One thing I'm confused by overall: do the projectors need to have edge blending technology or is this something projection software on the computer can do? Or does both my computer software AND projector need to have edge blending technology?
The computer I will most likely have access to run the video is a Mac Pro. I don't have the exact specs on me, but I believe it's a quad core with 8gigs ram. Not sure of the graphics card, but I can get more info if necessary.
So one option for hardware I saw was this Matrox device: Matrox Graphics - Products - Graphics Cards - M-Series - M9138 LP PCIe x16
However it seems this ^ is only for PC?
Matrox also offers this: Multi Monitor Adapter for Maximum Performance | TripleHead2Go
But this ^ sounds dubious because it's using the existing GPU to render the graphics (I'm assuming the former Matrox product helps with added video RAM?). From my calculations, using 3 projectors at full HD (minus the 33% from letter box) I have to output a 5760x720 image. Is this even possible? Do I need to split up the projection onto multiple computers? If that high of a resolution becomes impossible, maybe I should use 720p projectors? This would also make creating the graphics easier too. (I will be creating the content on Aftereffects CS 5, which I know doesn't like big resolutions). But man do I like the look of big resolutions!
If a application for the PC platform is much easier, I may be able to acquire a PC for this project. However, I would prefer to stay Mac.
(my brain is really hurting, sorry if yours is too!)
Finally, what projection software do I need?
-Seems like I need video software that supports edge blending (unless the projectors take care of this?).
-I will also need something that allows for masking and projection mapping. The wall I'm projecting on actually slopes along the bottom with a difference of 10" on either side, so I'll need to adjust the image to fit the wall on site.
-I'm planning on having this running every night for a month. Would be great if the software could start and stop the projection at certain times. However I could automate this with other controlling software, I believe, so it's not a deal breaker.
-Again, I will be running OS X, unless a PC solution is preferred.
I've looked at Qlab, Isadora, Dataon and Green hippo, but it's all very confusing to me.
I think that's it.
Hopefully this wasn't to wordy. THANK YOU SO MUCH in advance for any advice you may have.
Best,
Ben
IMAGES:
(3 projector example)
View attachment 6266
(4 projector example)
View attachment 6265
Last edited: