ImageJ
ImageJ is an open-source image processing program designed for scientific multidimensional image analysis. It provides a wide range of tools for editing, analyzing, processing, saving, and printing 8-bit, 16-bit, and 32-bit images, with support for stacks and hyperstacks. It is widely used in fields like biology, medicine, and materials science for tasks such as particle analysis, cell counting, and intensity measurements.
Developers should learn ImageJ when working in scientific research, biomedical imaging, or any domain requiring quantitative image analysis, as it offers a robust, extensible platform with a large plugin ecosystem. It is particularly valuable for automating repetitive analysis tasks through its macro language and scripting capabilities, enabling reproducible research workflows. Use cases include analyzing microscopy images, measuring object sizes and intensities, and creating custom image processing pipelines.