For instance is it possible to determine with some degree of accuracy if a person is ranks high in openness to new ideas by some photos of the person?
These studies investigated the abilities of participants to guess peoples' personalities from photos of their faces.
Extraverts' faces were judged as more extraverted by participants.
Ian S. Penton-Voak, Nicholas Pound, Anthony C. Little, and David I. Perrett(2006). Personality Judgments from Natural and Composite Facial Images: More Evidence For A “Kernel Of Truth” In Social Perception. Social Cognition: Vol. 24, No. 5, pp. 607-640. https://doi.org/10.1521/soco.2006.24.5.607
Participants performed better than chance at judging conscientiousness and agreeableness from composite faces.
Little, A. C. and Perrett, D. I. (2007), Using composite images to assess accuracy in personality attribution to faces. British Journal of Psychology, 98: 111-126. https://doi.org/10.1348/000712606X109648
Participants could identify agreeableness, neuroticism and physical health from the faces.
Jones, A. L., Kramer, R. S. S., and Ward, R. (2012). Signals of personality and health: the contributions of facial shape, skin texture, and viewing angle. J. Exp. Psychol. Hum. Percept. Perform. 38, 1353–1361. https://doi.org/10.1037/a0027078
Hu, S., Xiong, J., Fu, P., Qiao, L., Tan, J., Jin, L., & Tang, K. (2017). Signatures of personality on dense 3D facial images. Scientific Reports, 7(1), 73. https://doi.org/10.1038/s41598-017-00071-5
Penton-Voak, I. S., Pound, N., Little, A. C., & Perrett, D. I. (2006). Personality Judgments from Natural and Composite Facial Images: More Evidence For A “Kernel Of Truth” In Social Perception. Social Cognition, 24(5), 607–640. https://doi.org/10.1521/soco.2006.24.5.607