This happens because the information is de-compressed. JPEG images are
compressed, and information is lost in creating them because of the
lossy compression.
During de-compression no information gets lost further, it just gets
inflated back to the original file size.
PSD has some compression, and
If the information is lost when creating a JPEG file, where does it come
from when converting the JPEG to PSD or TIFF? Or is the lost
information never retrieved, and only the file is decompressed less some
information?
Frits Wüthrich wrote:
This happens because the information is
The information lost is never retrieved anymore, its gone forever.
It is information lost during compression, and the image is changed
because of that.
While creating a jpg you can choose the compression quality, the better
quality, the less data is gone and the bigger the file will be after
No, it isn't interpolated upwards. It is just uncompressed. The whole
idea of jpeg compression is for images to take up less space on your
hard drive.
Len
* There's no place like 127.0.0.1
-Original Message-
From: Shel Belinkoff [mailto:[EMAIL PROTECTED]
Sent: Saturday, December
AM
Subject: Re: JPEG to TIFF or PSD Conversion
If the information is lost when creating a JPEG file, where does it come
from when converting the JPEG to PSD or TIFF? Or is the lost
information never retrieved, and only the file is decompressed less some
information?
Lost information
Message -
From: John Francis [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, December 07, 2003 12:34 PM
Subject: Re: JPEG to TIFF or PSD Conversion
Wsh!
That was the sound of everything that John just explained going STRAIGHT
over tanya's head..
tan. (who
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