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  1. #41
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    Projection mapping tutorial
    Looks sweet! What kind of projector are you using? I really want to do this but I have a large tree in one half of my yard...


    Quote Originally Posted by Icepick View Post
    You are correct that the angles will transfer to your finished product. If you don't angle your overlay ( say stone walls) they will look off. What I did was draw in reference lines of my siding so I could match my images to. Last year I did a decrepit run down house with peeling painted siding. My reference lines were used to line up my peeling painted siding image, so I even had everything lined up plank for plank.
    MAttachment 323993
    Here is a reference image, albeit sideways.

    Edit: I don't remember what software your using for video editing, but with serif, if you hold the control key then grab a corner of the video frame, it makes it easier to adjust for this situation. Other software editing programs can also do this by adjusting your video tracks in "3-d" space, just serif made it super simple. That's the main reason I used serif to begin with, the ability to make quick easy adjustments to match those weird angles.

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    Just wondering where everyone gets there video files from. Started playing with this last night. The out line and photo shop part was pretty easy now just need to get all the video parts together.

  4. #43
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    Nov 2013
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    Indian Trail NC
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    Quote Originally Posted by SavageEye View Post
    Looks sweet! What kind of projector are you using? I really want to do this but I have a large tree in one half of my yard...
    I'm using a BenQ 880 ust. I needed ultra short throw to be able to get full coverage of my house. Before I purchased he short throw, I was using a view sonic pj862. I had to have it around 30 feet away, and it only covered about 2/3 of my house.
    click here
    Link to my projection mapping tutorial.

  5. #44
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    Nov 2013
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    Indian Trail NC
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    Quote Originally Posted by roselanecemetry View Post
    Just wondering where everyone gets there video files from. Started playing with this last night. The out line and photo shop part was pretty easy now just need to get all the video parts together.
    Most of my footage is from videos I own. There are a few exceptions where I found royalty free footage and use it. There is also using google images for static items.
    click here
    Link to my projection mapping tutorial.

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    ok so i made my trace, in windows paint set the properties to 1024x768. screen res is the same . when i bring this image into serif set the project to the same 1024x768 when i look at the full screen video on the house the image dont line up like it did in paint the right side is short if that makes scene any idea on what the issue could be.

  7. #46
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    Nov 2013
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    Indian Trail NC
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    Quote Originally Posted by Roselanecemetery View Post
    ok so i made my trace, in windows paint set the properties to 1024x768. screen res is the same . when i bring this image into serif set the project to the same 1024x768 when i look at the full screen video on the house the image dont line up like it did in paint the right side is short if that makes scene any idea on what the issue could be.
    From the messages I get from people having issues using "paint" , it seems like the best work around is when your making the initial trace, have your display set for projector only. This seems to have fixed issues with the lining up. There is also a " pixel aspect ratio" in serif properties that needs to be set at "1.0"
    click here
    Link to my projection mapping tutorial.

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    Ok thanks i will look into that tonight

  9. #48
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    Nov 2008
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    Mentor, Ohio
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    I was wondering how the mapping went and if you have any video from Halloween night
    He's building WWHHAATT??

  10. #49
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    Aug 2013
    Location
    Oxfordshire, England
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    Hi Icepick, great tutorial. I have a few questions if I may:


    Firstly, like Icepick, my wife and I go yearly to Disney albeit DLP (Disney Land Paris in France) and we were blown away by the Disney Dreams night show that transforms the castle.

    I understand the importance to setting your computer’s resolution to the same as the projector’s native resolution to do the trace of the house.

    My current projector (NEC MT106) whilst good as it has 2,600 ANSI lumens, native resolution of 1024 x 768 (XGA) but a throw ratio of approximately 1.5:1 so I’d have to position it across the road to get the effect. I will have to get another projector with a shorter throw ratio.

    Question 1: After doing 3D trace do you set your computer back to default resolution?
    Once you have done the trace and you’re back inside using your image editing program to make masks do you need to keep the computer’s resolution the same the projector’s native resolution or can you reset the computer back to its default resolution.

    Question 2: Best cost effective native resolution?
    As I need to get another projector but this time a short throw one, apart from good ANSI lumens, what native resolution should I go for. i.e 1024 x 768, 1280 x 800, or 1920 x 1080? OK that might be a silly question as on paper 1920 x 1080 is better but on terms of projection mapping is there much difference between 1280 x 800 and 1920 x 1080 or even 1024 x 768? Bearing in mind that a higher native resolution is going to cost more.

    Question 3: If you upgrade projector do you need to redo 3D trace and start again?
    If I bought a 1280 x 800 native resolution projector and used it for a few years and then when prices drop bought a 1920 x 1080 native resolution projector would I need to start from scratch, i.e.redo the 3D trace etc?

    Many thanks,

  11. #50
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    Nov 2013
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    Indian Trail NC
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    Quote Originally Posted by Privateer View Post
    Hi Icepick, great tutorial. I have a few questions if I may:


    Firstly, like Icepick, my wife and I go yearly to Disney albeit DLP (Disney Land Paris in France) and we were blown away by the Disney Dreams night show that transforms the castle.

    I understand the importance to setting your computerís resolution to the same as the projectorís native resolution to do the trace of the house.

    My current projector (NEC MT106) whilst good as it has 2,600 ANSI lumens, native resolution of 1024 x 768 (XGA) but a throw ratio of approximately 1.5:1 so Iíd have to position it across the road to get the effect. I will have to get another projector with a shorter throw ratio.

    Question 1: After doing 3D trace do you set your computer back to default resolution?
    Once you have done the trace and youíre back inside using your image editing program to make masks do you need to keep the computerís resolution the same the projectorís native resolution or can you reset the computer back to its default resolution.

    Question 2: Best cost effective native resolution?
    As I need to get another projector but this time a short throw one, apart from good ANSI lumens, what native resolution should I go for. i.e 1024 x 768, 1280 x 800, or 1920 x 1080? OK that might be a silly question as on paper 1920 x 1080 is better but on terms of projection mapping is there much difference between 1280 x 800 and 1920 x 1080 or even 1024 x 768? Bearing in mind that a higher native resolution is going to cost more.

    Question 3: If you upgrade projector do you need to redo 3D trace and start again?
    If I bought a 1280 x 800 native resolution projector and used it for a few years and then when prices drop bought a 1920 x 1080 native resolution projector would I need to start from scratch, i.e.redo the 3D trace etc?

    Many thanks,
    Yes you can set your computer back to its native resolution while working and even using it to playback( if your using it for playback) of your edited mapping. If you want to save a step with not having to make changes back and forth, just set your display to "projector only" when making the map. This should use your native projector settings right from the start.

    Question 2 isn't one I can really help with. Of course I want to say go with a 10000 plus lumen, 1920x1080 ultra short throw. But I know everyone has a budget. All I can recommend is to buy what you can afford. Resolution is more important than lumens to me, but that means nothing if people can't see it. Base your lumens on you r ambient lighting. My first year, I used a 1100 lumen machine and it worked just fine.

    Question three is an absolute yes, a new map will be needed if you change projectors. The good news is, is that the mapping is the easy part. Going through all your created content to resize and adjust to fit the new projector is the hard part. for me, this is where labeling my video tracks properly helped. Your house won't change so it's just adjusting the actual video track to fit to the new map.

    If I missed anything let me know, or if you have any more questions.
    click here
    Link to my projection mapping tutorial.

 

 
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