How can multiple image TIFF files be converted to JPEG files?

Question

How can multiple image TIFF files be converted to JPEG files in a batch manner?

Update 1: convert on Linux (part of ImageMagick) as suggested by Miss Cellanie and glallen worked. It was straightforward. I downloaded the ISO image of the netbook version of Kubuntu 9.1, burned it onto a DVD, restarted, started a command-line window, changed current directory to where inter2.tif was and typed:

    convert -separate inter2.tif new_inter2.jpeg

This created the 3 expected images, new_inter2-0.jpeg, new_inter2-1.jpeg and new_inter2-2.jpeg. Some error messages were displayed:

convert: incorrect count for field "DateTime" (21, expecting 20); tag trimmed. `inter2.tif' @ tiff.c/TIFFWarnings/526.
convert: inter2.tif: unknown field with tag 317 (0x13d) encountered. `TIFFReadDirectory' @ tiff.c/TIFFWarnings/526.
convert: inter2.tif: unknown field with tag 33628 (0x835c) encountered. `TIFFReadDirectory' @ tiff.c/TIFFWarnings/526.

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I have a lot of microscopy images of cells. They are in the TIFF format, one TIFF file per sample/cell picture and 3 channels/images in each TIFF file (3 different light wavelengths).

The TIFF files need to be converted to JPEG files in a batch manner (user intervention should not be required), 3 JPEG files for each TIFF file (corresponding to the 3 wavelengths).

I have tried to use the command-line tool tiffsplit that is included with LibTIFF to do the first step, extracting the 3 images from the original TIFF to 3 new TIFF files. But it crashes with the TIFF files I have (on Windows XP 64 bit, DEP enabled). The error message is:

Unhandled exception at 0x6fd853d1 in tiffsplit.exe: 0xC0000005: Access violation writing location 0x6fdc8ddb

Do you know of another solution? Either on Windows or Linux.

Here is a sample TIFF file (3.8 MB). Composite image (single JPEG file made by importing in MS Paint and saving as JPEG) to give you an impression of what it is:

Answer 1

There's probably a slightly more elegant way, but this should do it for you:

for FILE in $(ls *.tif); do \
    for I in R G B; do \
       convert -channel $I -separate -format jpg $FILE $FILE-$I.jpg ; \
    done ; \
done ; \ 
rename s/\.tif\-/\-/ *.jpg

Answer 2

IrfanView has excellent batch processing abilities.

IrfanView also supports command line operations

i_view32.exe c:\myimages\*.tif /convert=c:\images\*.jpg

Here's the link to Command line manual

Answer 3

Try convert or mogrify using ImageMagick. More instructions from ubuntuforums.org.

Answer 4

Besides the excellent separate tools from ImageMagick, there is also this simple command line tool called img2img which has the ImageMagick convert component bundled into it. It supports tons of formats and can autodetect input formats. You can batch convert like so (be sure to run this in the directory with all of the .tiff files):

for /f "delims=." %x in ('dir /b *.tiff') do img2img "%x.tiff" "%x.jpeg"