[IC] Effective Image Retrieval for the M-Learning System

Abstract.

In this paper, we propose augmented learning contents (ALC) withthe blended learning on mobile devices. It augments on-line contents by indexingthe corresponding off-line contents using traditional pattern recognitionmethod, which results in a minimize of labors for conversion. Among the patternrecognition method marker-based is one of most general approach. Howeverit must reconstruct the off-line contents with pattern markers. To solveboth drawbacks that use of the pattern markers and difficulty of the color-basedimage retrieval by means of a low-resolution PDA camera, we used for a shapebasedsystem. CBIR based on object shapes is used instead of pattern markersto link off-line contents with on-line, and shapes are represented by a differentialchain code with estimated new starting points to obtain rotation-invariantrepresentation, which is suited to low computational resources of mobile devices.Consequently, the ALC can provide learner with a fast and accurate multimediacontents (video, audio, text) on static off-line contents using mobile deviceswithout space limitation.

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2006.