This review discusses various imaging techniques used in plant phenotyping, including visible imaging, fluorescence imaging, thermal infrared imaging, imaging spectroscopy, and 3D imaging. These techniques are essential for understanding plant traits related to growth, yield, and stress tolerance. Visible imaging is used to assess plant architecture, biomass, and other traits. Fluorescence imaging helps detect disease resistance and stress responses by analyzing chlorophyll fluorescence. Thermal infrared imaging measures plant temperature and stomatal conductance, providing insights into water status and stress. Imaging spectroscopy provides data on plant water content, chlorophyll content, and other physiological parameters. 3D imaging techniques like LIDAR and stereo vision are used to reconstruct plant structures and analyze canopy morphology. Tomographic imaging using MRI, PET, and CT allows for non-invasive analysis of plant internal structures and water distribution. The review highlights the advantages and limitations of each technique, emphasizing the need for standardized protocols and further improvements in image processing for high-throughput phenotyping. The integration of multiple imaging techniques enhances the ability to distinguish between different stress responses, improving the accuracy of plant phenotyping.This review discusses various imaging techniques used in plant phenotyping, including visible imaging, fluorescence imaging, thermal infrared imaging, imaging spectroscopy, and 3D imaging. These techniques are essential for understanding plant traits related to growth, yield, and stress tolerance. Visible imaging is used to assess plant architecture, biomass, and other traits. Fluorescence imaging helps detect disease resistance and stress responses by analyzing chlorophyll fluorescence. Thermal infrared imaging measures plant temperature and stomatal conductance, providing insights into water status and stress. Imaging spectroscopy provides data on plant water content, chlorophyll content, and other physiological parameters. 3D imaging techniques like LIDAR and stereo vision are used to reconstruct plant structures and analyze canopy morphology. Tomographic imaging using MRI, PET, and CT allows for non-invasive analysis of plant internal structures and water distribution. The review highlights the advantages and limitations of each technique, emphasizing the need for standardized protocols and further improvements in image processing for high-throughput phenotyping. The integration of multiple imaging techniques enhances the ability to distinguish between different stress responses, improving the accuracy of plant phenotyping.