Jump to content

Banner.jpg.657c26aa416d79803b2519a8862171c5.jpg

Video bit depth and planetary imaging


Recommended Posts

Hi there,

I have a Canon 550D which I use to capture 640x480 video at 60fps. I have got some good results on Jupiter but I think the video is compressed and only 8 bit for each colour channel. 

Would I get better results using magic lantern and recording raw video at a lower frame rate (~20fps)? 

When I stack the video in Registax, does it combine lower bit depth frames into a single higher bit depth image?

Many thanks!

Dan :icon_scratch:

Link to comment
Share on other sites

Well I think I have found an answer:

http://www.stark-labs.com/craig/resources/Articles-&-Reviews/BitDepthStacking.pdf

Bottom line is that if noise is present between the frames of a video (which is almost certainly the case!) then this acts to increase the bit depth of the final stacked image. In fact even 10  8-bit frames containing noise stack to about 11.3 bits which is perfectly acceptable. In addition, noise within in the frames can make high bit depth video partly redundant since a proportion of the accuracy in rgb values will be useless because it will be finer than the noise level present...

I think I will stick with 8-bit 60 fps video! :wink2:

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.