Evaluation of spectral similarity indices in unsupervised change detection approaches

Autor: Jeisson Fabian Ramos, Diego Renza, Dora M. Ballesteros L.

Publikováno v: Dyna, Vol 85, Iss 204, Pp 117-126 (2018)

Unsupervised change detection (UCD) is a subject of Remote Sensing whose objective is to detect the differences between two multi-temporal images. In some cases, spectral similarity indices have been used as the comparison block in algorithms of UCD.

Externí odkaz: https://doaj.org/article/a0bb33fbea6448a6bfc4feaf739e4694

Función resumen perceptual para verificación de integridad en audio forense

Autor: Dora M. Ballesteros L., Diego Renza, Héctor Duvan Ortiz

Publikováno v: Ingeniería y Ciencia, Vol 13, Iss 25 (2017)

En este artículos se propone una función que permite calcular un código resumen a partir de los parámetros de una señal de voz. Esta función está basada en el ordenamiento de los coeficientes espectrales en un proceso de imitación entre el es

Externí odkaz: https://doaj.org/article/ebae0b93e2914908be81961c3e824083

A bit more on the ability of adaptation of speech signals

Autor: Dora M. Ballesteros L., Juan M. Moreno A.

Publikováno v: Revista Facultad de Ingeniería Universidad de Antioquia, Iss 66 (2013)

Some traditional digital signal processing techniques encompass enhancement, filtering, coding, compression, detection and recognition. Recently, it has been presented a new hypothesis of signal processing known as the ability of adaptation of speech

Externí odkaz: https://doaj.org/article/3fd250354a054417b3465b30783ec2d6

Real-time, speech-in-speech hiding scheme based on least significant bit substitution and adaptive key

Autor: Dora M. Ballesteros L, Juan M. Moreno A

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Real-time, embedded speech-in-speech hiding has not been widely researched. Nevertheless, it could be useful, among other cases, in secure mobile telephony. In this paper, we propose a new scheme of data hiding which takes advantage of the masking pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a311e739c36786283b47caeb354506c6

On the ability of adaptation of speech signals and data hiding

Autor: Dora M. Ballesteros L, Juan M. Moreno A

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

The efficient wavelet masking is a scheme of speech-in-speech hiding based on the ability of adaptation of speech signals under the hypothesis “any (speech) secret signal may seem similar to a (speech) host signal if its wavelet coefficients are so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c16489afbae3428e7ad2bb6dd20b582f