Course teached as: B031983 - COLORIMETRIA E PERCEZIONE CROMATICA Second Cycle Degree in PHYSICAL AND ASTROPHYSICAL SCIENCES Curriculum FISICA APPLICATA
Teaching Language
italian
Course Content
History of Color Science
The physics of color
Colors in natural phenomena
Color of objects:
The structure of the eye
Metamerism.
Additive and subtractive synthesis.
Basics of photometry and radiometry.
Color illusions
Psychophysics of color.
Colorimetry and color spaces
Color vision anomalies
Color vision tests
Laboratory: color measurements and measurements on color perception.
The aim of this course is to introduce the topic of color vision and color measurement. To achieve this, we will focus on the physics of color and color vision to understand the relationship between objective color measurement and its perception. We will also cover color perception anomalies and their measurement methods. In the laboratory, we will conduct measurements of the key aspects of colorimetry.
Prerequisites
Classical electromagnetism and optics.
Teaching Methods
The course is conducted through lectures and laboratory sessions. Since students from both physics and optics/optometry backgrounds may attend the course, we encourage cross-disciplinary discussions and the exchange of different competencies.
Type of Assessment
The exam is oral and consists of two parts: the first part is a short seminar presentation on a topic chosen by the student, followed by in-depth questioning. In the second part of the exam, questions will be asked on a different section of the course, which may have received less focus during the seminar presentation. This examination format allows the evaluation of the student's specific foundational knowledge and acquired skills in analysis and exploration. The exam duration is approximately 40 minutes.
Course program
History of Color Science: primary and secondary qualities, Newton and color decomposition, Young and trichromatism, Maxwell and early measurements.
The physics of color: the corpuscular theory and light sources, the prism and diffraction grating.
Absorption, emission, and scattering.
Colors in natural phenomena: the color of the sky, sunset, green flash, mirage, Fata Morgana, clouds.
Color of objects: Kubelka Munk's law, pigments, colors of glasses. Structural and interference colors. Dichroic glasses.
Lippmann's color photography.
The structure of the eye: cones and rods, visual acuity, the third receptor.
Metamerism.
Additive and subtractive synthesis. Post images. Photopic and scotopic vision.
Basics of photometry and radiometry for colorimetry.
Hue, brightness, and saturation.
Color illusions: chromatic contrast, chromatic assimilation. Chromatic dispersion.
Psychophysics of color: the retinex model, white balancing, color constancy, the dress illusion.
Colorimetry and color spaces: the LMS system. The CIE1931 system. Limits of the CIE system. The CIELAB system. The RGB color space.
Laboratory: color measurements using spectrophotometer and colorimeter.
Laboratory: characterization and calibration of a display.
Color vision anomalies: types of anomalies. Protan, deutan, and tritan. Congenital and acquired anomalies.
Color vision tests: Ishihara test, 100 hue test, D15, City University Color Test, Color Assessment and Diagnosis Test (CAD).
Laboratory: measurements on color perception.
Sustainable Development Goals 2030
9: Industry, Innovation, and Infrastructure: Colorimetry enables the development of faster and implementable control systems.
3: Good Health and Well-being: Analyzing color vision anomalies allows for greater inclusivity in the workplace.