Publication: Identificación de la fuente de adquisición en vídeos digitales de dispositivos móviles
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2021-07-26
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Universidad Complutense de Madrid
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Abstract
El incesante aumento de tecnologías como 4G o 5G ha hecho que dispositivos móviles como teléfonos inteligentes y tabletas sean masivamente utilizados. Como consecuencia de este fenómeno y de la gran cantidad de tiempo que una persona permanece junto a su teléfono móvil, éste se ha convertido en la principal fuente de creación de información visual. Sin embargo, su fiabilidad como una verdadera representación de la realidad no se puede dar por sentado debido al constante aumento de software de edición que permite alterar fácilmente el contenido original sin dejar un rastro notable en la modificación. Por tanto, es completamente necesario introducir mecanismos de análisis forense para garantizar la autenticidad o integridad de un determinado vídeo digital, máxime si puede ser considerado como prueba en procesos judiciales. Esta tesis se enmarca en este contexto e intenta profundizar dentro de la rama del análisis forense multimedia que permite determinar la identificación de la fuente de adquisición de un determinado vídeo mediante la explotación de los rastros únicos que deja el sensor de la cámara del dispositivo móvil en el contenido visual.
The unceasing rise of technologies like 4G or 5G has made mobile devices such as smartphones and tablets massively used. As a consequence of this phenomenon and the large amount of time that a person uses his mobile phone, this device has become the main source of creation of visual information. However, its reliability as a true representation of reality cannot be taken for granted due to the constant increase in editing software that makes it easy to alter original content without leaving a noticeable trace in the modification. Therefore, it is completely necessary to introduce forensic analysis machanisms to guarantee the authenticity or integrity of a certain certain video, especially if it may be considered as evidence in legal proceedings. This thesis fits within this context and tries to delve into the branch of multimedia forensic analysis that allows to determine the identification of the source of acquisition of a certain video by exploiting the unique traces left by the camera sensor of the mobile device in visual content.
The unceasing rise of technologies like 4G or 5G has made mobile devices such as smartphones and tablets massively used. As a consequence of this phenomenon and the large amount of time that a person uses his mobile phone, this device has become the main source of creation of visual information. However, its reliability as a true representation of reality cannot be taken for granted due to the constant increase in editing software that makes it easy to alter original content without leaving a noticeable trace in the modification. Therefore, it is completely necessary to introduce forensic analysis machanisms to guarantee the authenticity or integrity of a certain certain video, especially if it may be considered as evidence in legal proceedings. This thesis fits within this context and tries to delve into the branch of multimedia forensic analysis that allows to determine the identification of the source of acquisition of a certain video by exploiting the unique traces left by the camera sensor of the mobile device in visual content.
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Tesis de la Universidad Complutense de Madrid, Facultad de Informática, leída el 02/03/2021