"Jpegpixi" is short for "JPEG pixel interpolator". The intent of the
program is to interpolate pixels in JFIF images (commonly referred to
as "JPEG images"). This is useful to correct images from a digital
camera with CCD defects. For example, if one pixel is always bright
green, this pixel can be interpolated away with jpegpixi.

Jpegpixi is unique in that it tries to preserve the quality of the
JFIF image as much as possible. Usual graphics programs decode JFIF
images when they are loaded, and re-encode them when they are saved,
which results in an overall loss of quality. Jpegpixi, on the other
hand, does not decode and re-encode the image, but manipulates the
encoded image data (known as the "DCT coefficients"). Therefore, the
blocks (typically 8×8, 8×16, or 16×16 pixel areas) which contain the
pixels to be interpolated are minimally disturbed, whereas other
blocks remain pixel-by-pixel identical to the original image.

Jpegpixi is a command line utility. It is Free Software, released
under the GNU General Public License.

Please read the manual page for detailed usage instructions ("man
jpegpixi"). For a usage example, please see the "Example" section on
the jpegpixi homepage at .

-rwxr-xr-x    1 root    root            10780 aoû 24 03:22 /usr/bin/jpeghotp
-rwxr-xr-x    1 root    root            26216 aoû 24 03:22 /usr/bin/jpegpixi
drwxr-xr-x    2 root    root                0 aoû 24 03:22 /usr/share/doc/jpegpixi-0.16.0
-rw-r--r--    1 root    root              169 jan 26  2004 /usr/share/doc/jpegpixi-0.16.0/AUTHORS
-rw-r--r--    1 root    root            17992 mai  2  2002 /usr/share/doc/jpegpixi-0.16.0/COPYING
-rw-r--r--    1 root    root            13588 aoû 23 17:19 /usr/share/doc/jpegpixi-0.16.0/ChangeLog
-rw-r--r--    1 root    root             9240 aoû 12 22:22 /usr/share/doc/jpegpixi-0.16.0/INSTALL
-rw-r--r--    1 root    root             4559 aoû 23 17:06 /usr/share/doc/jpegpixi-0.16.0/NEWS
-rw-r--r--    1 root    root             2675 jan 25  2004 /usr/share/doc/jpegpixi-0.16.0/README
-rw-r--r--    1 root    root            19945 jun 17  2003 /usr/share/doc/jpegpixi-0.16.0/README.jpeglib
-rw-r--r--    1 root    root             1487 aoû 24 03:22 /usr/share/man/man1/jpeghotp.1.bz2
-rw-r--r--    1 root    root             2314 aoû 24 03:22 /usr/share/man/man1/jpegpixi.1.bz2