ImageJ is an open-source image analysis platform that can measure and extract information from plot images using built-in tools and plugins. It...
Pros
- Free, open source, and available across major desktop platforms
- Powerful image preprocessing can improve extraction from poor scans
- Extensible through plugins and macros for repeatable workflows
Cons
- Requires plugins or manual setup for convenient plot digitization
- Less purpose-built and slower to learn than dedicated digitizers
- Axis calibration and curve extraction are not as streamlined