Image Processing Reference
In-Depth Information
transmission through the MPEG-4 framework, and the rendering of the haptic
effects using the MPEG-V standard in the rendering stage.
Important challenges remain to deliver a cost-effective implementation of multi-
sensorial media solutions. A major issue identified by several authors is the need to
establish a quality/utility model for sensory experiences. At the content creation
stage, the development of effective (semi)automatic video annotation tools is a
common challenge to the majority of multi-sensorial media implementations
reviewed. Semantic video analysis seems a suitable strategy to identify those
relevant events that should trigger sensory effects and/or interactive actions. A
significant challenge is posed also by the use of computer vision algorithms to
recognize specific scene features, objects, elements, or characters as a way to boost
the visualization of additional content (i.e., sensory effects) associated to the
recognized element/character. However, the cost-intensity of these algorithms
needs to be decreased to enhance their deployment feasibility.
Other issues that should be subject to further analysis and/or improvement are:
the identification of more efficient encoding/decoding methods (in particular for
large SEM), the configuration of suitable transport mechanisms and the effective
management of the various types of delays introduced along the transmission chain.
At the receiver side, automatic techniques are required for enabling the discov-
ery, feature detection, and remote configuration of sensory devices. Likewise,
effective automatic mechanisms shall be developed to adapt sensory effects to the
capabilities of the specific rendering devices available at the user
s premises (e.g.,
'
specific protocol, resolution, or time constraints).
From a market perspective, sensory-enhanced video has the potential to support
the development and deployment of immersive media services targeting the wide
domestic segment. The high consumption of action movies, sports, and documen-
taries in this context might favor the adoption of these solutions.
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