A New Seal Verification For Chinese Color Seal

Automatic Chinese seal identification

A combination of image processing and matching techniques is proposed to solve the problem of seal identification. The techniques include thresholding, rotation, thinning, reexpansion, and finally matching of seal images. The principle for identification is based on the fact that the spatial distributions of the stroke skeletons of the characters engraved by human hands on two distinct seals wi...

Apical seal versus coronal seal

the results of the initial study. It was concluded that the apical fluids, with their primary source being blood serum, diffuse into the empty canal spaces, stagnate, undergo degradation and then act as a physicochemical irritant when they diffuse back into periapical tissues. In support of this theory of stagnation, in 1955 Dow and Ingle showed that the majority of the endodontic failures were...

The UNESCO Seal of Excellence for Handicrafts

The UNESCO Seal of Excellence for Handicrafts

Color Seal Extraction from Documents: Robustness through Soft Data Fusion

This paper presents a framework for the extraction of elements characterized by a particular color hue from color document images. The presented approach attains the detection of official seals, which will be thence analyzed by an embedding system in order to detect possible falsifications. The framework is based on the fusion operator denoted as fuzzy integral, whose robustness with respect to...