In this report, a character recognition system is proposed that handles degraded manuscript documents which were discovered at the St. Catherine’s Monastery. In contrast to state-of-the-art Ocr systems, no early decision, namely the image binarization, needs to be performed. Thus, an object recognition methodology is adapted for the recognition of ancient manuscripts. Therefore, interest points...

The DCR application for Degraded Character Recognition was developed for the DEA (Diplôme d’Études Approfondies)’s thesis. The main objective is to recognize characters, degraded by an acquisition from a lowresolution camera. Several steps are needed and are detailed in this thesis from the thresholding step, which converts a gray-level picture in a black and white one, to the post-correction s...

Poor quality documents are obtained in various situations such as historical document collections, legal archives, security investigations, and documents found in clandestine locations. Such documents are often scanned for automated analysis, further processing, and archiving. Due to the nature of such documents, degraded document images are often hard to read, have low contrast, and are corrup...

The design and analysis of an algorithm for the restoration of degraded images of machine-printed characters is presented. The input is a set of degraded bilevel images of a single unknown character ; the output is an approximation to the charac-ter's ideal artwork. The algorithm seeks to minimize the discrepancy between the approximation and the ideal, measured as the worst-case Euclidean dist...

Abstract Plants native from Cerrado generally have peculiar characteristics that allow tolerating water and nutritional stress. Astronium fraxinifolium is a Anacardiaceae tree of Brazilian Cerrado. The aim this research was to characterize A. leaves morphophysiologically, in order recognize related acclimatization the species different soil conditions. Two populations were sampled study areas, ...

In this paper, we outline two strategies for the maintainence and optimization of the printing quality of xerographic systems. The first strategy is concerned with the management of the effect of disturbances and system variations in the context of control of the tone reproduction curve via a robust control methodology. The second strategy deals with larger scale faults and capability degradati...

A Bloom filter is a space-efficient randomized data structure representing a set for membership queries. Faults in Bloom filters, however, cannot guarantee no false negatives. In this paper, we present a simple redundancy scheme for detecting false negatives and tolerating false positives induced by faults in Bloom filters during normal operation. A spare hashing unit with a simple coding techn...

Generally, the evaluation and assessment critical condition of rill formation are useful for a better understanding of soil erosion processes. The inherence characteristics of soils, which have much dynamic variations on the hill-slopes and are affected by rill formation, are the soil critical shear stress and soil erodibility factors. This study aims to assess experimental rill incision thre...

This investigation deals with the transient analysis of the machine repair system consisting of M-operating units operating under the care of single repairman. To improve the system reliability/availability, Y warm standby and S cold standby units are provided to replace the failed units. In case when all spares are being used, the failure of units occurs in degraded fashion. In such situation ...