Digital watermarking based on human visual system

Koz, Alper


Digital watermarking algorithms for audio and speech signals
Karaaslan, Salih Utku; Çiloğlu, Tolga; Bilgen, Semih; Department of Information Systems (1999)
Digital surface models from spaceborne images without ground control
Ataseven, Yoldaş; Alatan, Abdullah Aydın; Department of Electrical and Electronics Engineering (2012)
Generation of Digital Surface Models (DSMs) from stereo satellite (spaceborne) images is classically performed by Ground Control Points (GCPs) which require site visits and precise measurement equipment. However, collection of GCPs is not always possible and such requirement limits the usage of spaceborne imagery. This study aims at developing a fast, fully automatic, GCP-free workflow for DSM generation. The problems caused by GCP-free workflow are overcome using freely-available, low resolution static DSM...
Digital control of universal telecommunication power supplies using dual 8-bit microcontrollers
Kutluay, K; Cadirci, I; Yafavi, A; Cadirci, Y (2002-10-18)
Design and implementation of a digital controller for universal telecommunication power supply modules are presented. The paper emphasises on converter control strategy, and its implementation by means of parallel operated, dual 8-bit microcontrollers. One of the microcontrollers is employed for user interface purposes, such as long term records, display and alarm facilities, which are inherently slow processes. The fast processing speed required by output voltage setting, current limit, and load current sh...
Digital analysis of recorded seismic waves.
Tütüncöğlu, Katibe; Department of Electrical Engineering (1971)
Digital terrain model extraction from high-resolution point clouds by using a multi-resolution planarity-based approach
Koçan, Yasin; Leloğlu, Uğur Murat; Department of Geodetic and Geographical Information Technologies (2021-9-09)
Digital Elevation Model (DEM) is a mathematical representation of the elevation of the Earth’s surface. There are two types of DEM, namely Digital Surface Model (DSM) and Digital Terrain Model (DTM). DSM contains natural (bare-ground, trees, bushes, etc.) and artificial above-ground objects (buildings, vehicles, powerlines, etc.), while DTM covers only the bare earth without anything on it. Above-ground objects need to be removed to extract the DTM, which is a tedious task. This thesis proposes an algorithm...
Citation Formats
A. Koz, “Digital watermarking based on human visual system,” Middle East Technical University, 2002.