Rename files using wildcard pattern

This is the files we are going to rename

20080102-1201_DSC_0910.JPG
20080105-1923_DSC_1006.JPG
20080111-1220_DSC00189.JPG
20080122-0929_DSC00190.JPG

The mmv command is a command that lets you move/copy/append/link multiple files by wildcard patterns. It can be installed in Debian (or Debian based distributions like Ubuntu) by issuing the command

# aptitude install mmv

Now rename the files back to their original name

# mmv "*_DSC*" "DSC#2"

The result after this operation looks like this

DSC_0910.JPG
DSC_1006.JPG
DSC_1179.JPG
DSC_1302.JPG
DSC_1587.JPG

Correct the EXIF timestamp using exiv2

Next adjust the EXIF information stored in the image files to fix the one hour difference. This can be done using different EXIF tools like exiftool, but I will show you how it can be done using jhead and exiv2. The advantage with exiv2 is that it can also handle Nikon NEF files while jhead only can prosess JPG.

The current timestamp can be determined as follows

# exiftool DSC_0910.JPG | grep "File Mo"

The result in this case is

File Modification Date/Time : 2008:01:02 08:34:09

Adjust EXIF time info one hour forward using exiftool

# exiftool -AllDates+=1 DSC_0910.JPG

Other tools that could have done the job

Adjust EXIF time info one hour forward using jhead

# jhead -ta +1 DSC_0910.JPG

Install the jhead package using aptitude as mentioned earlier for the mmv package

Adjust EXIF time info one hour forward using exiv2

# exiv2 ad -a 1 DSC_0910.JPG

Rename files back to YYYYMMDD-HHMM_Original_Filename.JPG

It is now time to rename the files back to the YYYYMMDD-HHMM_Original_Filename.JPG format I used before this operation. This operation has been describe in a previous post named Rename image files according to EXIF date

exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls D*)

The script

#!/bin/bash -x
# Needed software:
# exiftool
# exiv2
# mmv

# Script tested on Nikon D80 and Sony Cybershot DSC-W12 files

# Make a printout of how the files look like now
ls -l > repair_name_and_exif_before.txt

# Rename files to remove date formatting back to original name
mmv "*_DSC*" "DSC#2"

# Change EXIF info on JPG files (order is important)
exiftool -overwrite_original -AllDates+=1 D*.JPG
# Preserve date/time of original file when writing
exiftool -overwrite_original '-DateTimeOriginal>FileModifyDate' D*.JPG

# Change EXIF info on NEF files (order is important)
exiftool -overwrite_original -AllDates+=1 '-DateTimeOriginal>FileModifyDate' D*.NEF
# Preserve date/time of original file when writing
exiftool -overwrite_original '-DateTimeOriginal>FileModifyDate' D*.NEF

# Rename files back to date formatting (YYYYMMDD-HHMM_Filename) based on the new EXIF info
exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls D*)

# Make a printout of how the files look like after conversion
ls -l > repair_name_and_exif_after.txt

The result after this HOWTO should look something like this spring image taken some days ago. Not one of my best photos but it will do the job in this post.

1. Open the IR photo file in Photoshop, presumeably a RAW file. In my case a Nikon NEF-file.
2. Open the file whith the White Balance set “As shot”.

3. The photo might look something like this

4. Go to the menu and choose Image –> Adjustments –> Channel Mixer… Now you can change the Red Output Channel and set the value for Red to 0% and change the Blue value to 100%. On the Blue Output Channel you set the blue Source Channel to 0% and Red to 100%.
   
5. Now we will let Photoshop adjust the levels and colors using the menu Image –> Adjustments –> Auto Levels followed by Image –> Adjustments –> Auto Color.
6. The result image should look something like this
   

Thats all that is needed to swap or invert two color channels in Photoshop CS3.

This HOWTO has not been tested on on earlier versions of Photoshop but I guess the features I’ve used aren’t new.

This has been tested on my Nikon D80 JPEG and NEF image files.

Linux

exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls)

Windows (from the command prompt)

exiv2.exe -r %Y%m%d-%H%M_:basename: rename d*

Windows (in a MS-DOS batch file)

exiv2.exe -r %%Y%%m%%d-%%H%%M_:basename: rename d*

You have to add an extra % if you are going to use exiv2 in a Windows batch file, because % in batch files is treated as a variable and not as a switch to exiv2.

These examples require that you have access to the exiv2 program from the current folder.

Result
Now my image files have names like

20071022-1202_DSC_9727.JPG
20071022-1202_DSC_9727.NEF

Change in workflow
Since I rename all my files in the format YYYYMMDD-HHMM_Filename I’ve included it in my image “workflow” (a simple MS-DOS batch file) I wrote about in Rotate images depending on the EXIF orientation post.

This has been tested successfully on the Windows exiv2 version 0.16

The new batch file can be downloaded here.

This can be extracted by running the following command

exiv2 -pt picturename.JPG
...
Exif.Nikon3.ShutterCount                     Long        1  5263

This example shows that there have been 5263 shots taken.

I guess this EXIF tag exists on Nikon D40x, D60 and D70 also, but this is not verified.

More Nikon specific EXIF tags can be found on http://www.exiv2.org/tags-nikon.html

while true; do gphoto2 --capture-image; sleep 60; done

Source: http://www.erikburrows.com/index.php?node=Nikon+D70