cameras for fast raw processing speeds - RAW Shooting and Processing - CHDK Forum
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cameras for fast raw processing speeds

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Offline mamoe

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cameras for fast raw processing speeds
« on: 26 / October / 2017, 02:36:24 »
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Hey everyone,

I have a question concerning what camera to use for a University research program. I want to achieve several things:
1. High resolution (10-14Mpx) unblurred images of cars moving at ~60km/h with considerable zoom (can't define it more precisely as it depends on the setting)
2. Fast image capturing, if possible at a rate of several per second, minimum 1 per second
3. Continuous charging so I do not have to change batteries and
4. Continuous picture retrieval to a hard disc or laptop so I do not have to change flash disk inside the camera

Why am I writing this here? I was previously using a SX50 HS. I think one limiting factor (pics were taken at a rate of ~2 sec max in continuous shooting using UBASIC program) was the raw processing speed.
Is there any model that brings what I need? Or does anyone actually have an idea what camera I col use. Was also thinking about a gopro or a really good webcam to get these resolutions and have points 3&4 covered.

What do you think? Any advice, maybe also for th search of my best option?
Best,
mamoe

 
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Offline Hardware_Hacker

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Re: cameras for fast raw processing speeds
« Reply #1 on: 26 / October / 2017, 03:06:45 »
Quote from: mamoe on 26 / October / 2017, 02:36:24
Hey everyone,

I have a question concerning what camera to use for a University research program. I want to achieve several things:
1. High resolution (10-14Mpx) unblurred images of cars moving at ~60km/h with considerable zoom (can't define it more precisely as it depends on the setting)
2. Fast image capturing, if possible at ....
...............................................................
What do you think? Any advice, .........
Is the camera to be mounted on a tripod.? or just hand held.
Is the camera then going to be manually or remotely operated. ?
Is the camera then going to attempt to track the "...cars moving at ~60km/h..."
Are the "...cars moving at ~60km/h..." Toward the camera or away from the camera.
Are the "...cars moving at ~60km/h..." always moving in the same general direction.

Can your project support two CHDK enabled cameras, one Fixed wide angle camera, tripod mounted.
Which is then able to trigger a second telephoto ( Tracking   ( ??? )  ) camera mounted on a tripod.
i.e. Camera One is using CHDK's Motion detection - Trigger exposure in response to motion, fast enough to catch lightning.

H-H
« Last Edit: 26 / October / 2017, 03:29:18 by Hardware_Hacker »
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Offline reyalp

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Re: cameras for fast raw processing speeds
« Reply #2 on: 26 / October / 2017, 16:18:54 »
Quote from: mamoe on 26 / October / 2017, 02:36:24
Hey everyone,
Why am I writing this here? I was previously using a SX50 HS. I think one limiting factor (pics were taken at a rate of ~2 sec max in continuous shooting using UBASIC program) was the raw processing speed.
SX60 would be the obvious choice, since digic 6 are generally a good bit faster. They are often still available from canon refurbished: https://shop.usa.canon.com/shop/en/catalog/refurbished-powershot-digital-cameras#facet:&productBeginIndex:0&orderBy:11&pageView:grid&pageSize:36&
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Offline mamoe

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Re: cameras for fast raw processing speeds
« Reply #3 on: 27 / October / 2017, 09:25:34 »

Is the camera to be mounted on a tripod.? or just hand held.
Is the camera then going to be manually or remotely operated. ?
Is the camera then going to attempt to track the "...cars moving at ~60km/h..."
Are the "...cars moving at ~60km/h..." Toward the camera or away from the camera.
Are the "...cars moving at ~60km/h..." always moving in the same general direction.

Can your project support two CHDK enabled cameras, one Fixed wide angle camera, tripod mounted.
Which is then able to trigger a second telephoto ( Tracking   ( ??? )  ) camera mounted on a tripod.
i.e. Camera One is using CHDK's Motion detection - Trigger exposure in response to motion, fast enough to catch lightning.

H-H
[/quote]

Thank you for this answer! Until now, the camera is supposed to be mounted on a tripod. But our workshop will craft other solutions if necessary to fix it and for example make the plugs accessible.
Operation can be done remotely or manually, it is no issues for now. Remotely would be better.
No tracking is taking place, I just want unblurred pics of the cars and fast enough (~1 pic per sec) so that none can evade my algorithms later ;) Both moving directions are important. The roads we're looking at are quite packed usually, so no motion detection is needed, just continuous shooting will do the job.


Thank you for the hint, i will look into it!

[/quote]
SX60 would be the obvious choice, since digic 6 are generally a good bit faster. They are often still available from canon refurbished: https://shop.usa.canon.com/shop/en/catalog/refurbished-powershot-digital-cameras#facet:&productBeginIndex:0&orderBy:11&pageView:grid&pageSize:36&
[/quote]

Thank you guys! And does anyone have a good idea about other photography forums that could help out with that questions? I am especially inclined into using fast and good webcams as data storage and power supply is no issue there. Any ideas?
Best wishes!
mamoe
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Offline Hardware_Hacker

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Re: cameras for fast raw processing speeds
« Reply #4 on: 27 / October / 2017, 19:42:37 »
Quote from: mamoe on 26 / October / 2017, 02:36:24
I have a question concerning what camera to use for a University research program. I want to achieve several things:
1. High resolution (10-14Mpx) unblurred images of cars moving at ~60km/h with considerable zoom ...........
This might be slightly off the topic of Motion Blur.

Some time ago I stumbled across a Motion De-Blur technique that used a rotating disk in front of the cameras lens.
As far as I can recall the rotating disk was encoded with a single track grey code pattern. (i.e. 2, 4, 8 etc.)
There was a series of photos of moving road traffic that demonstrated this Motion De-Blur method.

If the above, or some similar method, Motion De-Blur technique works OK, maybe it could be used on a second camera for a redundant back-up and data confirmation.

Edit:- Some CHDK cameras support higher frame rates in movie mode.
i.e. MOV - 640 x 480 - 120 fps, MOV - 320 x 240 - 240 fps
Again this might be useful mode for a second camera.

H-H
« Last Edit: 27 / October / 2017, 20:07:23 by Hardware_Hacker »
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