INTERACT FORUM

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Bad pixel filtering  (Read 2011 times)

Doof

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 5908
  • Farm Animal Stupid
Bad pixel filtering
« on: July 19, 2006, 12:04:43 pm »

Anybody have an image they can put up a link to that has bad pixels that MC can apparently filter out now? I'm just curious how this works.
Logged

Matt

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 42372
  • Shoes gone again!
Re: Bad pixel filtering
« Reply #1 on: July 19, 2006, 01:21:59 pm »

It's a pretty slick thing.  My D-Rebel has a red dot that shows up with any long exposures.  I'm too lazy to photoshop, reencode, etc. but now there's just no need.  For viewing and printing the stuck pixels are totally gone.

Currently it takes a little leg work to build the bad pixel map.  Shoot a long exposure with a lens cap on, and then find the coordinates of any dots.

I'm not aware of any other software that can do this nicely at view / print time like MC 12.

I'll see if I can put a sample together one of these days.
Logged
Matt Ashland, JRiver Media Center

Doof

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 5908
  • Farm Animal Stupid
Re: Bad pixel filtering
« Reply #2 on: July 19, 2006, 04:04:06 pm »

Is this something that MC12 could eliminate from the image entirely? Or just when we're viewing it through MC?
Logged

GHammer

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 1930
  • Stereotypes are a real timesaver!
Re: Bad pixel filtering
« Reply #3 on: July 20, 2006, 03:16:08 am »

Works well. I used a tool in the past to remove the aberrations from long exposure. Here is a nice explanation of where hot/bad pixels come from and why.

Hot Pixels
Logged
Pages: [1]   Go Up