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Aerial HD Video recorded using CHDK on Canon SD780IS

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Offline andrewhazelden

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Aerial HD Video recorded using CHDK on Canon SD780IS
« on: 19 / August / 2010, 05:51:46 »
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Hi.

I have been using CHDK for all sorts of projects and it is GREAT!

My most recent project with CHDK was filming an aerial video above West Dover, Nova Scotia from a model airplane in 720p High Definition video. A Canon Powershot IXUS SD780IS was used with the CHDK Beta. I used CHDK to increase the data rate of the video and used the ALT mode to keep the screen from turning off when the video finished recording.

http://www.andrewhazelden.com/blog/2010/08/high-definition-fpv-video-an-aerial-exploration-of-west-dover/

I also flew another flight in photo mode and used a custom CHDK intervalometer script to shoot high resolution photos.

Regards,
Andrew Hazelden

http://www.youtube.com/watch?v=nCO8bnQbIFU#





« Last Edit: 19 / March / 2011, 00:12:10 by andrewhazelden »
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Offline hotvedt

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #1 on: 20 / August / 2010, 10:05:58 »
Amazing!
The flight looks quite stable, despite the small(?) plane you used.
Some time in the future i'll do something similar myself.
Thanks for sharing.
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Offline andrewhazelden

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #2 on: 22 / August / 2010, 17:18:39 »
Quote
Amazing!
The flight looks quite stable, despite the small(?) plane you used.
Some time in the future i'll do something similar myself.
Thanks for sharing.

I used a Multiplex EasyStar model airplane with a 54 inch wing span. A Co-Pilot flight stabilizer kept the plane level during flight. It also helps to fly on days with less than 10 km / hr winds to get really smooth video.

Andrew
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Offline Super_Dork_42

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #3 on: 25 / August / 2010, 02:14:33 »
Very nice.
Also, given this evidence, I don't think it was such a small plane. I found it on Google.
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Offline Fredrock

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #4 on: 26 / August / 2010, 13:24:34 »
These are great pic... and nice plane by the way.
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Offline andrewhazelden

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #5 on: 27 / August / 2010, 09:07:18 »


This is the Multiplex EasyStar plane that I fly with.

Andrew
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Offline Super_Dork_42

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #6 on: 01 / September / 2010, 13:10:21 »
Nice plane. Could you show a pic of you next to it for size comparison?
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Offline onpatrol

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #7 on: 02 / September / 2010, 18:04:18 »
hi I'm new to chdk which script did you use for the  intervalometer as i want to do some aerial shots from my kite, i've been having trouble with exposure due to sudden changes in lighting caused by clouds, any tips would be much appreciated.
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Offline morrowwm

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #8 on: 11 / September / 2010, 17:59:00 »
Very nice. Reminds me of the stories from the early days of flight, where a biplane would fly over, and then a week later, a door-to-door salesman would come by to sell you the picture.

Any idea what your maximum altitude was?
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Offline andrewhazelden

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Re: Aerial HD Video recorded using CHDK on Canon SD780IS
« Reply #9 on: 15 / September / 2010, 06:59:55 »
Quote from: onpatrol on 02 / September / 2010, 18:04:18
hi I'm new to chdk which script did you use for the  intervalometer as i want to do some aerial shots from my kite, i've been having trouble with exposure due to sudden changes in lighting caused by clouds, any tips would be much appreciated.

Here is a link to the intervalometer script I used:
http://www.andrewhazelden.com/files/2010/March/CHDK_intervalometer_scripts.zip

timed.bas allows you set the delay between photos in seconds. rapid.bas works to take photos quickly in rapid succession. rapid.bas works best on photos in single shot mode. I use timed.bas most often.

Another option if you want the absolute max photos possible is to set the camera to continuous mode and have something hold the shutter button down on the camera. This will take photos very quickly. You have to make sure to lock focus on a distant object in the first photo though as it doesn't take a focus reading with each additional photo.

Make sure to set the camera to infinity focus (Mountain Mode) before starting the script.

To control changes in auto exposure you will need to lock in a specific exposure setting using CHDK shutter speed overrides. Make sure to set the exposure to something above 1/500th of a second so you can reduce the amount of motion blur.

Here is a handy table of pre-computed Shutter Speed Overrides on my blog:
http://www.andrewhazelden.com/blog/2010/06/chdk-shutter-speed-overrides-explained/
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