I get the pictures from my digicams (a Panasonic Lumix DMC-TZ6 compact, Pentax K100D DSLR, the old Canon compact I used to use before I got the Lumix and still keep as a backup, and the camera built into my phone which I use if I've nothing else around) by putting the camera's memory card into a reader and using my getpix script: this locates and mounts the device the card reader shows up on (e.g. /dev/sdc1 or whatever), finds the picture files and moves (or optionally copies without moving) them to a directory with today's date in YYYYMMDD format as its name. (This directory is inside a directory named with the year as 4 digits, within a directory ~/pix/, so if today is Xmas day 2010 pictures will be placed in ~/pix/2010/20101225/.)
The script renames each image file, transposing UPPER CASE to lower and prefixing the camera-generated filename with a date-and-timestamp derived from the image creation time in YYYYMMDD_hhmmss format, so an image file that appears as, say, DSCN1234.JPG on the card may end up at ~/pix/2010/20101225/20101225_102234_dscn1234.jpg. This uses Phil Harvey's ExifTool to access the images' EXIF data and rename the files.
Files not having exif creation-time data will not be renamed with a timestamp prefix, except in the case of .avi movie files created by (some?) Canon cameras which, although they do not have an exif datestamp, are accompanied by thumbnail JPEGs of the same serial-numbered filename (i.e. img_nnnn) but with the extension .thm. When the script encounters one of these .thm files it looks for a corresponding .avi file in the destination directory and renames that with the timestamp derived from the exif data in the .thm. (This relies on the .avi file being copied from the card to the destination before the .thm is processed.)
I didn't always timestamp my digicam images so when I started doing this I needed a way to rename my existing collection to timestamped format. This is relatively easily done with a one-liner:
which operates on just one directory - or to recurse down a specified directory tree just say:
Converting the names of Canon |
The getpix script also auto-rotates images according to their exif orientation tag.
For raw files (currently .nef, .pef, .cr2 & .dng) it calls a companion script raw2jpg , which uses Dave Griffin's dcraw converter for proprietary camera formats, with cjpeg (it could use ImageMagick's convert) to make a JPG copy of the raw file, and exiftool to copy the exif data from the raw file into the jpeg.
Once my digital pictures are uploaded to the PC it inevitably turns out that some are quite duff and I quickly delete the JPEGs of them. If the JPEGs were derived from raw files these remain, taking up space on my HDD, so to clean them up I run the script rmraworphans. (This only works for .PEF raw files.)
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Occasionally the memory card gets mounted Read-only. Where this is not caused by the tiny write-protect switch on an SD card getting moved(!) it can be due to some sort of problem on the card's FAT filesystem. This typically results in kernel panic messages in
e.g.
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