Image-based meshing is the process by which 3D images (e.g. X-ray CT or laser scanning) are converted into ultra-high resolution simulations. 3D imaging is increasingly being used in the industrial sector for inspection, non-destructive testing / evaluation (NDT/NDE) and metrology but image-based simulation is still an underutilised technique. IBSim-4i is a 4-day programme consisting of a 2-day training course followed by a 2-day users' forum. Our aim is that the activities of IBSim-4i will facilitate a wider adoption of image-based simulation and provide a platform to discuss the cutting-edge developments in the field.