Feasibility study of an inexpensive densitometry system for radiochromic film dosimetry

•Feasibility trial of a pseudo-densitometer based on computer vision.•Optoelectronic arrangement for film dosimetry.•Net optical density uncertainty in radiochromic film dosimetry.•Three-channel image analysis with a pseudo-densitometer and a flatbed scanner.•Future engineering must enhance the signal-to-noise ratio to reduce uncertainty.