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In this paper, we propose a spatiotemporal salient objects-based approach for video retrieval. The spatiotemporal salient object is defined as the region sequence which is spatial salient and temporal continuous at the same time. As attention analysis is an effective mechanism for salient information selection, it provides a practical approach to narrow the semantic gap. Most existing methods extract...
It is an important and challenging problem to tack variant-pose target, especially when the appearance of target changes during the period of occlusion. The traditional feature matching methods can not work well under the situations of target pose varying. This paper analyzes the characteristics of human visual tracking, and proposes a visual tracking model based on feature-imagination. Human tracking...
The bit-plane complexity segmentation (BPCS) steganography has good visual imperceptibility and high data embedding capacity, but the original BPCS method is vulnerable to the statistical analysis of complexity histogram. A modified BPCS method was proposed to enhance the security, but the deficiency still exists. Basing on the analysis of the original and modified BPCS method, an improved BPCS algorithm...
Topological maps are used by biological species for navigation in complex and cluttered environments with very primitive sensory inputs and limited computational abilities. The core aspect of topological maps are the properties (usually some environmental features) used to define the nodes of the map. In this paper we use a well known technique adopted by desert ants called visual piloting for autonomous...
When the traditional CANNY algorithm is applied for edge detection, thresholds are needed to filter candidate edge points after non-maximal suppression. But at present, thresholds are set by experience and the optimal choice is obtained by repeated tests and comparisons. In addition, the choice of current thresholds does not take characteristics of uneven lighting images into account. In some special...
The ability to filter improper content from multimedia sources based on visual content has important applications, since text-based filters are clearly insufficient against erroneous and/or malicious associations between text and actual content. In this paper, we investigate a method for detection of nudity in videos based on a bag-of-visual-features representation for frames and an associated voting...
Three graphical data displays of histograms, box plots, and behavior plots are used in existing literature for subjective model validation. In this paper, we present two additional plots that can be used for displaying graphs of data; these are the so-called circle plots and ordinal plots. These plots are easy to generate using model data and system data. Like the existing plot types, no statistical...
The LHC++ (Libraries for HEP Computing) working group was established in mid-1995, in response to a stated requirement from the LHC collaborations, to investigate a CERNLIB-like environment, but based on C++. The strategy of the working group, which involves representatives from CERN experiments and outside, has been to adopt standards - either de-jure or de-facto - whereever appropriate and...
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