About the study: For their study published on Sept. 10, Sony AI's research team employed colorimetry to derive quantitative metrics and assess standardized skin tone scales that AI tech companies have adopted in their tools, such as the Monk Skin Tone Scale and the Fitzpatrick scale. The researchers quantified skin color bias in face datasets and generative models, breaking down results by the skin color of saliency-based image cropping and face verification algorithms.