Jpegpixi is useful to correct images from a digital camera with CCD defects.
Jpegpixi 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 with jpegpixi.
Jpegpixi is unique in that it tries to preserve the quality of the JPEG image as much as possible. Usual graphics programs decode JPEG 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, only decodes the DCT blocks (typically 8×8, 16×8, or 16×16 pixel areas) which contain pixels to be interpolated, and when it re-encodes them, it uses exactly the same parameters with which the image has originally been encoded.
These blocks are therefore only minimally disturbed, and other blocks remain pixel-by-pixel identical to the original image.
Jpegpixi is a command line utility. Its messages and the manual pages are available in four languages:
- Finnish (thanks to *-> Jarno Elonen),
- French (thanks to *-> Stephan Peccini),
Jpegpixi is *-> Free Software, released under the GNU General Public License.
What's New in This Release:
· A typo in the English jpegpixi manual page has been fixed.
· The postal address of the Free Software Foundation has been updated.