Imagineer Systems Ltd was founded in 2000 with the aim of building innovative products based around computer vision technology. Our first products mokey, has helped to automate various important tasks in film and video post-production, including wire and rig removal, stabilisation, lens distortion correction and matte creation. Two new products, monet and motor, are specialised to compositing and rotoscoping applications. Our core technology is a fast and accurate tracker for affine and projective 2D motion. In my seminar I shall relate some of the history of the company and summarise the algorithms and software we have developed, in particular our "Gandalf" computer vision library (see gandalf-library.sf.net). There will be extensive demonstrations of mokey and monet. If time permits, I will present a mathematical conundrum in the area of the normalisation of projective quantitities.