An Approach to a Comprehensive Test Framework for Analysis and Evaluation of Text Line Segmentation Algorithms

The paper introduces a testing framework for the evaluation and validation of text line segmentation algorithms. Text line segmentation represents the key action for correct optical character recognition. Many of the tests for the evaluation of text line segmentation algorithms deal with text databases as reference templates. Because of the mismatch, the reliable testing framework is required. Hence, a new approach to a comprehensive experimental framework for the evaluation of text line segmentation algorithms is proposed. It consists of synthetic multi-like text samples and real handwritten text as well. Although the tests are mutually independent, the results are cross-linked. The proposed method can be used for different types of scripts and languages. Furthermore, two different procedures for the evaluation of algorithm efficiency based on the obtained error type classification are proposed. The first is based on the segmentation line error description, while the second one incorporates well-known signal detection theory. Each of them has different capabilities and convenience, but they can be used as supplements to make the evaluation process efficient. Overall the proposed procedure based on the segmentation line error description has some advantages, characterized by five measures that describe measurement procedures

Thermovisual camera commands decoding and ISI format encrypting

523-528This study describes wiretapping method for camera and its monitoring codes. Analysis and decoding of specially protectedISI database includes temperature data of an object observed in the process

Calibration System for Thermocouple Testing

One of activities of the Mining and Metallurgy Institute is production of thermocouple elements made of precious metals. Since this is a complex technological process and the quality control of produced elements is performed by other institutions, sometimes the whole series of products can happen to be bad and not useful. This is increasing costs and time of production, as well. To prevent wasting of time and money, the special measuring system is developed. The kernel of the system is already existing microprocessor measuring station - MMS. The MMS’s hardware configuration, initially designed for industrial process control requirements with suitable input channel characteristics and adequate response time is adapted for the purpose of thermocouple calibration. Appropriate software solution is developed, as well. This article describes the practical solution for thermocouple testing and calibration. Hardware interface, principles of system integration and developed software are also included