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The large variety of video data sources means variability not only in terms of included content, but also in terms of quality.Therefore, quality assessment provides an additional dimension.The paper describes a comprehensive evaluation experiment on perceived video quality. Consequently, in summary, 19 200 000 video frames will be processed. Given the scale of the experiment, it is set up on a computer...
In the field of still and moving pictures digital imaging one of the most important factors affecting the quality of the acquisition is a correct exposure. This factor is especially important for video surveillance. It is particularly applicable in the case of CCTV cameras often operating in low-light conditions or blinded by an external light source. It is quite common that the lighting conditions...
The paper presents different no reference (NR) objective metrics addressing the most important artefacts for raw (source) video sequences (noise, blur, exposure) and those introduced by compression (blocking, flickering) which can be used for assessing quality of experience. The validity of all metrics was verified under subjective tests.
Most telecommunication operators are moving cautiously with their video-based services rollouts because of video service assurance concerns. Competition between providers is fierce and the key to success is to provide a service with the highest possible level of user satisfaction (QoE, quality of experience). Providers, of course, cannot afford the risk of going to market with a sub-standard video...
This paper describes an innovative compression method of panoramic images based on MPEG-7 descriptors. The proposed solution employs a detection of a series of individual video frame overlaps in order to produce concatenated panoramic images. The presented method is easy to implement even in simple devices such as low power consuming chipsets installed in remote cameras having limited power supplies...
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