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Pixel-Zensur entfernen

Remove pixel-censorship



Frage von blauezampel:
August 2008

Hello together!

Is there a way / program to "verpixelte scenes" (censorship) to remove clips or backward?
Or is this garnicht technically feasible?

mfg

blauezampel



Antwort von Meggs:

"blauezampel" wrote:

Or is this garnicht technically feasible?


In general, it is not technically feasible.
It would be feasible if the manufacturer of the video the image parts verpixelt not easy, but for example after a certain algorithm swapped, so would have scrambled, and you would know this algorithm. That is not the case. Why should someone in the obscure part of an image they bother?



Antwort von KrischanDO:

Hi,

sometimes helps as the Picture with zusammengekniffenen eye view, the old joke from the enigma of celebrity magazines.

Could perhaps the single image with a Gaussian blur Chen imitate.

Regards
Krischan





Antwort von Debonnaire:

When blanking Verpixelung by several original pixels on a larger area (eg, 2x2 pixels or more) combined (eg by averaging). Once this summary as a new film rausgerendert is there the original pixel information in this film, nothing more. Way! Therefore, this effect can not undo synonymous.

Where no information is synonymous can not be restored. The same problem is synonymous with the magnification of a digital recording, you will always be poor and grainy look than the original!

The video frames do not include such as EXIF data, which, in Meta-form, which still weggerechnete information stored and which would therefore they could restore.

However, there are other methods of deletion, such as the use of a vortex filter, where it criminologists have succeeded in the initial face again somewhat recognizable to make. The Swirl filter destroyed but no pixels, but only swirled for a (known or Investigation) mathematical Algorithums what exactly (up to a certain extent) synonymous again may be reversed if it is cracked or the manufacturer has stated.



Antwort von Meggs:

"Debonnaire" wrote:

The video frames do not include such as EXIF data, which, in Meta-form, which still weggerechnete information stored and which would therefore they could restore.


Because thou hast much upset.
EXIF data, or metadata, certain data from the camera, which in the header of the image file is stored (Aperture, shutter speed, camera model, etc.) There are no picture information is what would be appropriate, changes to the pixel structure to reverse.
You probably do RAW data. If changes are made to the RAW file is not changed, but the changes will be incorporated in a supplementary file. Deletes the Zusatzfatei, the original data again.



Antwort von WoWu:

@ Meggen

I think Debonnair wanted to mention on the thumbnails, which is probably not obliterated and are as Exif data can be ... Of course, no data to reconstruct the original file ... (although, with little effort ...) but otherwise, quite rightly, only sometimes the preview is already a lot of her. ..... But not on video ...



Antwort von Debonnaire:

Nö, nö, guys ... I meant exactly what I wrote ( "eg EXIF data) and did not synonymous upset. It was an example of how you might imagine, as a Manufacturer Verpixelungsfilters as an original and quality data in a picture or image stream could be preserved, so that the original image could be displayed again.

I know that this just is not done (as written), and therefore can be more Verpixelung not repent! But it is not inconceivable that in my hypothetical way (or otherwise be synonymous) were ev.

From RAW data, I have, in relation to amateur video, certainly not spoken! The first would s.Kameras from one format to a theme RED! And I go times assume that the poster does not have such features, if he issues such as this, the ... ;-)

And they are so obviously synonymous for Video and Still Image no (where RAW certainly could be an issue), because the poster of "verpixelten scenes" writes!



Antwort von WoWu:

Well, Debonnaire, everything is possible, it is just not part of the Exif standard, so it went Meggen, the way I understand it ... and he is right.



Antwort von Debonnaire:

"WoWu" wrote:
... it is just not part of the Exif standard, so it went Meggen so, as I understand it ... and he is right.

And that is exactly what I said when I said that it was not implemented! Actually read it, what you write?



Antwort von WoWu:

Quote:
The video frames do not include such as EXIF data, which, in Meta-form, which still weggerechnete information stored and which would therefore they could restore.


You write only that no video "exif" files.
The second part includes the description of the files .... and just wrong.
In order to answer your question: Yes, we read very carefully what you write. "



Antwort von blauezampel:

Hello together,

bottom line if it is synonymous bad, I would like to thank everyone for the lively discussion. At least I have learned quite a bit ;-). Even the book I found very interesting, maybe I will buy it to me synonymous.

mfg

blauezampel




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