Many video service providers take advantage of bitrate ladders in adaptive HTTP video streaming to account for different network states and user display specifications by providing bitrate/resolution pairs that best fit client's network conditions and display capabilities. These bitrate ladders, however, differ when using different codecs and thus ...
In actual application scenarios of the real-time video confidential communication, encrypted videos must meet three performance indicators: security, real-time, and format compatibility. To satisfy these requirements, an improved bitstream-oriented encryption (BOE) method based chaotic encryption for H.264/AVC video is proposed. Meanwhile, an ARM-e...
With the recent development of video compression methods, video transmission on traditional devices and video distribution using networks has increased in various devices such as drones, IP cameras, and small IoT devices. As a result, the demand for encryption techniques such as MPEG-DASH for transmitting streams over networks is increasing. These ...
This paper deals with the impact of content on the perceived video quality evaluated using the subjective Absolute Category Rating (ACR) method. The assessment was conducted on eight types of video sequences with diverse content obtained from the SJTU dataset. The sequences were encoded at 5 different constant bitrates in two widely video compressi...
Un réseau de capteurs sans fil (RCSF) ou bien Wireless Sensor Network (WSN) est l’ensemble d’éléments appelés micro-capteurs capable de collecter des données et les transmettre via des liens sans fil. Avec le développement des éléments hardware comme les caméras CMOS, l’intégration des contenus multimédia est devenue possible dans les RCSFs la chos...
Published in Sensors (Basel, Switzerland)
Video quality evaluation needs a combined approach that includes subjective and objective metrics, testing, and monitoring of the network. This paper deals with the novel approach of mapping quality of service (QoS) to quality of experience (QoE) using QoE metrics to determine user satisfaction limits, and applying QoS tools to provide the minimum ...
H.264/AVC is a popular video coding standard used in the fields of communication, video streaming and broadcasting. The H.264/AVC standard as specified in ITU-T — ISO/IEC has two methods of entropy coding, namely Context-based Adaptive Variable Length Coding (CAVLC) and Context-based Adaptive Binary Arithmetic Coding (CABAC). CABAC utilizes probabi...
Video quality evaluation needs a combined approach that includes subjective and objective metrics, testing, and monitoring of the network. This paper deals with the novel approach of mapping quality of service (QoS) to quality of experience (QoE) using QoE metrics to determine user satisfaction limits, and applying QoS tools to provide the minimum ...
Diplomsko delo opisuje kvantitativno primerjavo kvalitete kodiranja kodekov H.264/AVC ter H.265/HEVC. Na osnovi metodologije PSNR ter SSIM za merjenje kakovosti videa želim pokazati napredek in učinkovitosti novega kodirnega standarda H.265/HEVC. V uvodnem delu so predstavljeni cilji zaključne naloge in orodja, ki sem jih uporabil za izvedbo diplom...
On ne peut que constater combien la technologie vidéo est devenue omniprésente en un peu plus d’une décennie. Si les besoins des nouveaux services vidéo ont été en partie satisfaits par l’efficacité des réseaux et de leurs technologies de couche physique, en parallèle les codecs vidéo ont été primordiaux en offrant compression et nouvelles fonction...
