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Instructors: Prof. Dr. Edgar Dörsam
Event type:
Lecture
Org-unit: Dept. 16 - Mechanical Engineering
Displayed in timetable as:
Farbwiedergab Medien
Subject:
Crediting for:
Hours per week:
3
Language of instruction:
German
Min. | Max. participants:
- | -
Digital Teaching:
This course will be held as a digital course in the summer semester 2021. This course was recorded in the winter semester and can be viewed via a link. In moodle there are monthly dates for consultations and questions.
If the corona crisis requires it, the oral exams will also be held via ZOOM
Course Contents:
The term "color" is used very differently in everyday language and is also subject to numerous influences resulting from culture and environment. In this lecture, the term "color" is now at the centre of attention, which specifically refers to the perception of color by humans. It is therefore not about the production or composition of a paint in a can, which is then used as a wall paint or car paint. It's about the color perception of humans. Color perception, like hearing, belongs to the seven sensory perceptions of human beings and is therefore a subjective quantity. Many different factors play a role in the assessment of colors, including ambient light, the physiology of the eye and the brain have a great influence on how the color is perceived by each individual. An important finding should be: the color "blue" is not a physical property of a surface. We therefore do not see the color "blue", we feel an impression of color and think of the color "blue".
In a first part of the lecture the visual system of humans is described, the color perception process is explained and different models of color perception are presented. Finally, it is clarified how in science a subjective quantity can be represented in a colorimetric with number and measure. In industrial environments, it must be ensured that everyone involved in the communication of colors speaks of the "same color", specifically: that the same color impression is guaranteed. The second part of the lecture examines the question of how colors can be faithfully reproduced in color on other technical media (e.g. monitors or printing technology) using technical media (e.g. different cameras). Important technical color spaces such as RGB, CMYK or CIELab will also be introduced.
In this lecture, students will learn a lot about the human visual system and the differences between physics, physiology and perception. Interesting is the observation of color perception in physical, physiological and perceptual models. The technical basics of lighting (e.g. LEDs), camera technology, various display technologies (LCD, OLED) and printing technology are taught. Current developments are also addressed and discussed with the students. No previous knowledge of technical hardware (e.g. camera, television, printing technology) is required.
The following topics are presented in detail:
- Meaning of the term "colour"
- Spectral description of optical radiation, technical light sources, light colours, body colours, interference colours
- Human visual system, color perception process, perception models
- Colorimetry - Description of (subjective) visual color impression
- Technical Media
- Digital image recording
- Displays
- Printing Technology
- Color management
The lecture language will be German. The lecture slides and additional documents are provided on moodle. Attending the lectures is recommended but not mandatory. The purchase of a book is not necessary.
Examination
The examination (approx. 35 minutes) is oral and starts with a presentation (5 minutes ± 1 minute) on a topic of your choice from the lecture content. The selection of the presentation topic does not have to be registered or approved in advance. Tools (PowerPoint, index cards,...) are not allowed; demonstrators, models or sketches can be prepared and brought to the presentation. Afterwards, the examiner will ask questions about the presentation and its subject area for approx. 5 minutes. This is followed by an examination talk on two topics of the lecture (approx. 20 minutes). If required, further short questions from different subject areas can be asked.
The examinations are individual appointments, i.e. only one person per appointment is examined. The examination dates can be arranged at any time in the winter semester or summer semester. However, they should be agreed with the secretariat at least 4 weeks in advance.
Target audience
The lecture is aimed at students in the Master's programme of the Faculty of Mechanical Engineering. Students from other faculties can participate, provided that the examination regulations provide for this possibility.
Literature:
Additional literature will be announced in the lecture. The purchase of books is not necessary.
Preconditions:
none
Expected Number of Participants:
40
Further Grading Information:
Official Course Description:
Online Offerings:
moodle
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