2026-08-16T16:43:42Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:7140 2024-03-06T11:04:59Z ddc:004 open_access

Self-Adaptive Video Encoder: Comparison of Multiple Adaptation Strategies Made Simple (Artifact) Maggio, Martina Papadopoulos, Alessandro Vittorio Filieri, Antonio Hoffmann, Henry self-adaptive software video encoding comparison control theory This paper presents an adaptive video encoder that can be used to compare the behavior of different adaptation strategies using multiple actuators to steer the encoder towards a global goal, composed of multiple conflicting objectives. A video camera produces frames that the encoder manipulates with the objective of matching some space requirement to fit a given communication channel. A second objective is to maintain a given similarity index between the manipulated frames and the original ones. To achieve the goal, the software can change three parameters: the quality of the encoding, the noise reduction filter radius and the sharpening filter radius. In most cases the objectives - small encoded size and high quality - conflict, since a larger frame would have a higher similarity index to its original counterpart. This makes the problem difficult from the control perspective and makes the case study appealing to compare different adaptation strategies. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Martina Maggio and Alessandro Vittorio Papadopoulos and Antonio Filieri and Henry Hoffmann 2017 Is Part Of DARTS, Volume 3, Issue 1, Special Issue of the 12th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS 2017) Article Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/DARTS.3.1.2 urn:nbn:de:0030-drops-71408 https://drops.dagstuhl.de/entities/document/10.4230/DARTS.3.1.2 eng https://creativecommons.org/licenses/by/3.0/de/legalcode