如何用ImageMagick批量反转图片颜色？Linux下mogrify命令报错求助

Let’s walk through fixing your issue step by step—there are two main problems here: incorrect command syntax and missing ImageMagick format support.

1. Your Command Syntax Is Wrong #

First off, mogrify doesn’t work the way you wrote it. By default, mogrify modifies source files in-place, and you can’t just append a target folder at the end. To batch process images and save them to a new directory, use one of these correct approaches:

Option 1: Use convert with a loop (most straightforward) #

This loops through every image in your source folder, inverts the colors, and saves the result to the target folder with the original filename:

# First make sure the target folder exists
mkdir -p /home/yu/Desktop/2

# Process each image
for img in /home/yu/Desktop/1/*; do
  convert "$img" -negate "/home/yu/Desktop/2/$(basename "$img")"
done

Option 2: Use mogrify with the -path flag #

If you prefer mogrify, you need to specify the output directory with -path before your processing flags:

mkdir -p /home/yu/Desktop/2
mogrify -path /home/yu/Desktop/2 -negate /home/yu/Desktop/1/*

2. Fix the "No Decode Delegate" Error #

That error means ImageMagick doesn’t have the necessary libraries to read your image format (JPG, PNG, WebP, etc.). Install the missing dependencies based on your Linux distro:

Debian/Ubuntu-based systems #

sudo apt update
sudo apt install imagemagick libmagickcore-6.q16-6-extra

The libmagickcore-6.q16-6-extra package adds support for most common image formats.

RHEL/CentOS/Fedora-based systems #

# For newer Fedora/RHEL 8+
sudo dnf install ImageMagick ImageMagick-devel

# For older RHEL/CentOS 7
sudo yum install ImageMagick ImageMagick-devel

After installing, verify your format support with:

identify -list format

Check that your image’s format (e.g., JPEG, PNG) appears in the output.

Once you’ve fixed both the syntax and installed the dependencies, re-run your command—your color-inverted images should save to /home/yu/Desktop/2 without issues.

内容的提问来源于stack exchange，提问作者Neil