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Based on the classical fractal video coding scheme, a novel hybrid video coding scheme joint fractal and object-based function is proposed. A new technique of object-based fractal video coding in which each object can be encoded and decoded independently results in increasing compression ratio and speed and reducing bit rate and bandwidth is used. The proposed techniques include: using more effective...
This paper presents an object-based non-blind watermarking technique that is robust to non-linear geometrical distortion attacks. This has been one of the most challenging problems for copyright protection of digital content because it is difficult to estimate the distortion parameters for the embedded blocks. In our proposed scheme, the locations used to embed the watermark information are memorized...
Object-based attention theory posits that attention is directed towards one object at a time. This paper attempts to simulate top-down influences. Five components of top-down influences are modeled: structure of object representation for long-term memory (LTM), learning of object representations, deduction of task-relevant features, estimation of top-down biases, mediation between bottom-up and top-down...
The region-based description of multispectral images enables important high-level tasks such as data mining and retrieval, and region-of-interest selection. In order to obtain an efficient representation of such images we resort to adaptive transform coding techniques. Such techniques, however, require a considerable information overhead, which must be carefully managed to obtain a satisfactory rate-distortion...
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