card reader dangers
Posted Feb 15, 2005 18:12 UTC (Tue) by dhess
In reply to: card reader dangers
Parent article: The Grumpy Editor plugs in his camera
Incidentally, I use flphoto to sort through pictures -- mainly just to turn them upright. One of its unusual merits is that it can losslessly rotate the pictures. That is, instead of reading and decompressing a jpeg, rotating it, and then re-encoding a new jpeg, it operates on the compressed jpeg data directly.
Maybe you already knew this, but jpegtran also does lossless rotation, and it's available in Debian's libjpeg-progs. In fact, all of jpegtran's image processing is performed on the DCT blocks.
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