|
pc
newsgroups
|
|||||||||||||||||||||||
|
|||||||||||||||||||||||
Software to eliminate dead pixels on video
I have a digital video camera, and unfortunately it now has ONE dead pixel on the CCD. This results in an always white pixel on any video I have recorded. Depending on the scene, it can be very distracting. It would in fact be easy to fix this. All I need is software where you can specify the location of the dead pixel, and it will then change its colour to that of the average of the surrounding pixels. I am sure that this would completely eliminate the problem in almost all (if not completely all) situations. Does anyone know of such software? Seems simple to do, but I haven't heard of it anywhere. Thanks, Mark Mark wrote:
> Does anyone know of such software? Seems simple to do, but I haven't I think you could make a bitmap mask and apply a strong gaussian blur> heard of it anywhere. to the immediate area in premiere. Not sure if this would completely eliminate a bright white pixel though... Alex On Sat, 30 Jul 2005 09:40:23 GMT, Mark <pleasenospam@nospam.com>
wrote: >I have a digital video camera, and unfortunately it now has ONE dead Personally, I'd look at writing a quick AviSynth script to process>pixel on the CCD. This results in an always white pixel on any video I >have recorded. Depending on the scene, it can be very distracting. > >It would in fact be easy to fix this. All I need is software where you >can specify the location of the dead pixel, and it will then change its >colour to that of the average of the surrounding pixels. I am sure that >this would completely eliminate the problem in almost all (if not >completely all) situations. > >Does anyone know of such software? Seems simple to do, but I haven't >heard of it anywhere. your incoming video. I've never heard of this exact problem being tackled, but I've read about far more difficult problems being solved with just a line or two of scripting. Try the forums at Doom9.org, at http:/forum.doom9.org. There are two sub-forums (-fora?) you should check: the DV one, and the AviSynth Usage one. Karyudo wrote:
Show quoteHide quote > On Sat, 30 Jul 2005 09:40:23 GMT, Mark <pleasenospam@nospam.com> Thanks, I'll try asking on the doom9 forum if people think that this is > wrote: > > >>I have a digital video camera, and unfortunately it now has ONE dead >>pixel on the CCD. This results in an always white pixel on any video I >>have recorded. Depending on the scene, it can be very distracting. >> >>It would in fact be easy to fix this. All I need is software where you >>can specify the location of the dead pixel, and it will then change its >>colour to that of the average of the surrounding pixels. I am sure that >>this would completely eliminate the problem in almost all (if not >>completely all) situations. >> >>Does anyone know of such software? Seems simple to do, but I haven't >>heard of it anywhere. > > > Personally, I'd look at writing a quick AviSynth script to process > your incoming video. I've never heard of this exact problem being > tackled, but I've read about far more difficult problems being solved > with just a line or two of scripting. Try the forums at Doom9.org, at > http:/forum.doom9.org. There are two sub-forums (-fora?) you should > check: the DV one, and the AviSynth Usage one. possible, and maybe if someone can do it (not sure if it is a big job or a 2 minute thing). Seems to me that such a program would be useful to a lot of people - better than throwing away a camera that may have cost you 1000's of dollars. On Wed, 03 Aug 2005 11:01:34 GMT, Mark <pleasenospam@nospam.com>
wrote: Show quoteHide quote >Karyudo wrote: I suspect it's a two-minute thing. Someone who knows AviSynth well>> On Sat, 30 Jul 2005 09:40:23 GMT, Mark <pleasenospam@nospam.com> >> wrote: >> >> >>>I have a digital video camera, and unfortunately it now has ONE dead >>>pixel on the CCD. This results in an always white pixel on any video I >>>have recorded. Depending on the scene, it can be very distracting. >>> >>>It would in fact be easy to fix this. All I need is software where you >>>can specify the location of the dead pixel, and it will then change its >>>colour to that of the average of the surrounding pixels. I am sure that >>>this would completely eliminate the problem in almost all (if not >>>completely all) situations. >>> >>>Does anyone know of such software? Seems simple to do, but I haven't >>>heard of it anywhere. >> >> >> Personally, I'd look at writing a quick AviSynth script to process >> your incoming video. I've never heard of this exact problem being >> tackled, but I've read about far more difficult problems being solved >> with just a line or two of scripting. Try the forums at Doom9.org, at >> http:/forum.doom9.org. There are two sub-forums (-fora?) you should >> check: the DV one, and the AviSynth Usage one. > > >Thanks, I'll try asking on the doom9 forum if people think that this is >possible, and maybe if someone can do it (not sure if it is a big job or >a 2 minute thing). Seems to me that such a program would be useful to a >lot of people - better than throwing away a camera that may have cost >you 1000's of dollars. (i.e. not me) will know exactly the right tools to invoke. The beauty of AviSynth is that once you've got a script dialled in for your particular camera -- one that targets the exact pixel you need -- it's reusable for every piece of footage you shoot. Just change the name of the source file in the AVS (text) file, and you're done... Karyudo wrote:
Show quoteHide quote > On Wed, 03 Aug 2005 11:01:34 GMT, Mark <pleasenospam@nospam.com> Just as a follow-up if anyone is reading this through google newsgroup > wrote: > > >>Karyudo wrote: >> >>>On Sat, 30 Jul 2005 09:40:23 GMT, Mark <pleasenospam@nospam.com> >>>wrote: >>> >>> >>> >>>>I have a digital video camera, and unfortunately it now has ONE dead >>>>pixel on the CCD. This results in an always white pixel on any video I >>>>have recorded. Depending on the scene, it can be very distracting. >>>> >>>>It would in fact be easy to fix this. All I need is software where you >>>>can specify the location of the dead pixel, and it will then change its >>>>colour to that of the average of the surrounding pixels. I am sure that >>>>this would completely eliminate the problem in almost all (if not >>>>completely all) situations. >>>> >>>>Does anyone know of such software? Seems simple to do, but I haven't >>>>heard of it anywhere. >>> >>> >>>Personally, I'd look at writing a quick AviSynth script to process >>>your incoming video. I've never heard of this exact problem being >>>tackled, but I've read about far more difficult problems being solved >>>with just a line or two of scripting. Try the forums at Doom9.org, at >>>http:/forum.doom9.org. There are two sub-forums (-fora?) you should >>>check: the DV one, and the AviSynth Usage one. >> >> >>Thanks, I'll try asking on the doom9 forum if people think that this is >>possible, and maybe if someone can do it (not sure if it is a big job or >>a 2 minute thing). Seems to me that such a program would be useful to a >>lot of people - better than throwing away a camera that may have cost >>you 1000's of dollars. > > > I suspect it's a two-minute thing. Someone who knows AviSynth well > (i.e. not me) will know exactly the right tools to invoke. > > The beauty of AviSynth is that once you've got a script dialled in for > your particular camera -- one that targets the exact pixel you need -- > it's reusable for every piece of footage you shoot. Just change the > name of the source file in the AVS (text) file, and you're done... archives, a very kind programmer called kassandro wrote an avisynth plugin/filter called removedeadpixels or removedeadpixel (the exact title and documentation haven't been done yet). It turned out to be much more difficult than I anticipated. Major problem was that even though there was a single dead pixel, it also corrupted adjacent pixels (possibly due to the compression in the DV algorithm). I sent a lot of video clips and still frames to kassandro, and he managed to analyse the effect under various circumstances. The fantastic news is that this resulted in a filter that completely eliminates the dead pixel. The result is really excellent, and saves me from having to buy a new video camera. Hopefully it will help others that have a similar problem as well. Of course, you can also apply the filter to as many pixels as you want, in case you have more than one dead pixel. On Wed, 24 Aug 2005 08:21:31 GMT, Mark <pleasenospam@nospam.com> wrote:
>Just as a follow-up if anyone is reading this through google newsgroup Good stuff. Thanks to both of you for all the work. It will certainly be a>archives, a very kind programmer called kassandro handy plug-in :) cheers -martin- -- "Beer is life!" On Wed, 24 Aug 2005 08:21:31 GMT, Mark <pleasenospam@nospam.com>
wrote: >Just as a follow-up if anyone is reading this through google newsgroup Hey, that's wicked. Yeah, kassandro's one of the incredibly clever>archives, a very kind programmer called kassandro wrote an avisynth >plugin/filter called removedeadpixels or removedeadpixel (the exact >title and documentation haven't been done yet) [...] a filter that completely >eliminates the dead pixel. The result is really excellent, and saves me >from having to buy a new video camera. Hopefully it will help others >that have a similar problem as well. people who hang out at Doom9. And like most of the rest of the people there, he's clearly willing to help! On Thu, 25 Aug 2005 03:49:49 GMT, Karyudo
<karyudo_use***@yahoo.com.remove.me> wrote: >Hey, that's wicked. Yeah, kassandro's one of the incredibly clever Maybe Pinnacle should hire him :)>people who hang out at Doom9. And like most of the rest of the people >there, he's clearly willing to help! -m- -- "Beer is life!"
Show quote
Hide quote
On 30/7/05 7:40 PM, "Mark" <pleasenospam@nospam.com> wrote: There's a Final Cut Pro plugin that'll do it but I don't know if that's much> Hi there, > > I have a digital video camera, and unfortunately it now has ONE dead > pixel on the CCD. This results in an always white pixel on any video I > have recorded. Depending on the scene, it can be very distracting. > > It would in fact be easy to fix this. All I need is software where you > can specify the location of the dead pixel, and it will then change its > colour to that of the average of the surrounding pixels. I am sure that > this would completely eliminate the problem in almost all (if not > completely all) situations. > > Does anyone know of such software? Seems simple to do, but I haven't > heard of it anywhere. > > Thanks, > > Mark help to you. Basically though you mask out the single pixel and apply a sampled average of the surrounds to that pixel. Be glad you've only got the one; friend of mine's XM1 has three! > Mark> It would in fact be easy to fix this. All I need is software where you > can specify the location of the dead pixel, and it will then change its > colour to that of the average of the surrounding pixels. I am sure that > this would completely eliminate the problem in almost all (if not > completely all) situations. > I have had the same experience. I know two solutions. 1. In Virtualdub use the filter Logoaway. 2. In Premiere make a copy of the track, and move it one pixel in any direction Make a mask of the pixel. Use in Transparency the option Track Matte and the white pixel will be "overwritten" by a surrounded pixel. Sorry for the last sentence. -- Met vriendelijke groeten Ton van Doorn
Show quote
Hide quote
"Mark" <pleasenospam@nospam.com> wrote in message news:bWHGe.66852$oJ.23474@news-server.bigpond.net.au... I seem to recall reading somewhere that some camcorders have> Hi there, > > I have a digital video camera, and unfortunately it now has ONE dead > pixel on the CCD. This results in an always white pixel on any video I > have recorded. Depending on the scene, it can be very distracting. > > It would in fact be easy to fix this. All I need is software where you > can specify the location of the dead pixel, and it will then change its > colour to that of the average of the surrounding pixels. I am sure that > this would completely eliminate the problem in almost all (if not > completely all) situations. > > Does anyone know of such software? Seems simple to do, but I > haven't heard of it anywhere. > > Thanks, > > Mark > the capability to mask dead pixels internally by means of some sort of special service programming. I don't know any specifics, but you might call the manufacturers service department to ask. "L David Matheny" wrote ...
> I seem to recall reading somewhere that some camcorders have Higher-end cameras (read: 3-chip) apparently make use of this> the capability to mask dead pixels internally by means of some > sort of special service programming. I don't know any specifics, > but you might call the manufacturers service department to ask. method of substituting adjacent pixels for dead ones. Dunno whether they use this method in 1-chip consumer camcorders, though. It requires individual "mapping" of the pickup chips and burning a custom EEPROM to tell the camera which pixels are dead. 
Other interesting topics
Do not order through www.bestpricecameras.com
Deflicker MPEG-2 video? Shotgun microphone? Mono vs. Stereo How do we create BIN (and CUE) files? wide angle converters sony vx 2100 They already walk amongst us... dead Canon camcorder: how to remove tape Sony CCD-TRV48E won't playback after record LCD monitor failed displaying in Panasonic NV-GS5 B |
|||||||||||||||||||||||
