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A low computational cost technique is presented for boundary detection inspired by the human visual system perception. The current contributions are a chromatic color difference color model, a morphological texture suppression filtering, and a neighborhood related edge thinning. The proposed dRdGdB color model defines a RGB inter-component color difference, and showed a significant improvement in...
This paper presents a new algorithm for speech segmentation based on image analysis of the spectrogram of the signal. The algorithm works in two loops: the first segments the sound in search for the speech signal. The segmented speech returns to the algorithm for phoneme segmentation. For evaluation, the algorithm was applied to TIMIT speech signals with correct speech segmentation of every tested...
There are several kinds of information that can be achieved in ancient documents. In general, image processing research on this subject works with images of letters or documents. Topographic maps and floor plans are also an important source of information about history. In this paper, we introduce a new algorithm for image segmentation of ancient maps and floor plans. It aims to remove most part of...
This work proposes a system for automatic recognition of vehicle license plate. Three phases are involved in the process: image acquisition, plate recognition and postprocessing. New algorithms for the second phase are described herein. The system first locates the plate in the image, and then it segments the characters of the plate and recognizes them. An algorithm based on vertical edge detection...
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