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Multimedia Computing

Code 14471
Year 1
Semester S2
ECTS Credits 6
Workload PL(30H)/T(30H)
Scientific area Informatics
Entry requirements None. To have a course on multimedia is advisable.
Learning outcomes Explain the difference between HDR image and LDR image.
Explain HDR image capture methods.
Know tone mapping operators for generating LDR images from HDR images.
Define the plenotic function.
Explain methods of capturing Light Fields.
Explain methods for creating holograms.
Explain how digital refocusing is processed.
Explain how to define different views.
Explain basic coding techniques.
Know the limits of human perception that affect the choices about digital representation. Design an encoder for the new image modalities presented.
Know objective and subjective quality assessment methods.
Syllabus 1) Multimedia tecnology (Image and video coding)
2) Quality of Experience (subjective evaluation, objective measures)
3) HDR Technology
4) Plenoptic models
4.1. Light Fields
4.2. Point clouds
4.3. Digital holography
Main Bibliography Slides.
Papers recommended in class.

R.M. Gray, "Entropy and Information Theory", Information Systems Laboratory, Elec- trical Engineering Department, Stanford University, Springer-Verlag, 1990.
F. Pereira, E. Silva, G. Lafruit, Image and Video Processing and Analysis and Computer Vision, 2018, Pages 75-111 - Chapter 2 - Plenoptic imaging: Representation and processing
M. Pereira, A. Pinheiro. JPEG XT verification tests by U.B.I., Covilha, Portugal. ISO/IEC JTC 1/SC 29/WG 1 N6590, (ITU-T SG16), Coding of Still Pictures, 2014.
A. Pinheiro, K., Pavel Korshunov, L. Krasula, M. Bernardo, M. Pereira, Touradj Ebrahimi, Performance evaluation of JPEG XT image compression, 67th meeting of ISO/IEC JTC 1/SC 29/WG 1, Strasbourg, France 2014.
P. Hanhart, M. Bernardo, P.Korshunov, M. Pereira, A. Pinheiro, and Touradj Ebrahimi, HDR image compression: a new challenge for objective quality metrics, 67th meeting of ISO/IEC JTC 1/SC 29/WG 1, Strasbourg, France 2014.
Teaching Methodologies and Assessment Criteria Learning activities are essentially based on theoretical and practical lectures.
Theoretical lectures essentially serve to expose the subject, that is, to analyze, evaluate and discuss the main concepts / data. The exposition of the concepts is always accompanied with presentation of examples and small exercises that allow to verify if the students are understanding the concepts and allows to take out some specific doubts that may arise.
The practical lectures serve to use the concepts acquired first with respect to the acquisition, representation and visualization of the different modalities of image and in a second time in the development or use of coding systems and quality assessment models. In these are carried out small exercises that the students will have to carry out with the accompaniment of the instructor.
The assessment is made through 4 projects (5 points each).
Language Portuguese. Tutorial support is available in English.
Last updated on: 2024-02-27

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