Urgent! Recognize Bit-Depth.

[andrefaria]

I have a directory with many different types of images. They have Bit-Depth of 1 bit, and 24 other other 8.
I would like to put in a command where ONLY negative images with 1 bit.
Can anyone help me?

[fmw42]

You have to extract that from the IM verbose information. The string formats "%z" and "%[depth]" only show 8 vs 16, etc

# create depth 1 image

convert rose: -threshold 50% rose_t50.png
identify -verbose rose_t50.png
...
Depth: 8/1-bit

In unix, this could get extracted by

depth=`convert rose_t50.png -verbose info: | sed -n 's/^ Depth:[^0-9]*\(.*\)-bit$/\1/p' | tr "/" " " | cut -d\ -f2`
echo "$depth"
1

depth=`convert rose: -verbose info: | sed -n 's/^ Depth:[^0-9]*\(.*\)-bit$/\1/p' | tr "/" " " | cut -d\ -f2`
echo "$depth"
8

[snibgo]

An equivalent in Windows, using just Windows tools, is:

Code: Select all

for /F "usebackq tokens=1-2 delims=Depth-bit:/ " %%L ^
in (`%IM%convert -verbose %1 info:^|findstr "Depth"`) do (
set DEPTH=%%M
if "!DEPTH!"=="" set DEPTH=%%L
)

echo Depth of %1 is %DEPTH% bits.

[snibgo]

@andrefaria: See the thread viewtopic.php?f=2&t=24291 for a new feature that will help.