The vehicle headlamp assessment of light shape is necessary for road safety.Traditional testing methods using a CIE A-α type goniophotometer cost enormous amount of time and money.In this study, a fast measurement method based on image processing is proposed for saving testing time and space.Experiment results show that the proposed method can export a reliable report with a tolerant error.The automatic alignment procedure based on edge detection algorithms can also be used to replace the visual task for cut-off line aiming in traditional methods.