Krzysztof Strzecha

Automatic investigation of surface phenomena in high temperature solid and liquid contacts

In the paper newly developed system for automatic measurements of surface properties is presented. The results obtained with the device described in this paper are far more accurate than those obtained by means of the currently applied non automatic methods based on the operators evaluation.

Computerized device with CCD camera for measurement of surface tension and wetting angle in solid-liquid systems

In this paper, a computerized device with the CCD camera for the automatic determination of important surface properties of liquid and solid in contact is described. This device is based on image processing algorithms. The system is capable of measuring the surface tension (surface energy) of liquid and the wettability of a solid surface in the wide range of temperatures, up to 1800/spl deg/C. The results obtained with this device are far more accurate than those obtained by means of the currently applied, extremely time consuming non-automatic methods and the operators subjective evaluation.

Drop shape analysis for measurements of surface tension and wetting angle of metals at high temperatures

New metals drop shape analysis algorithms are presented in this paper. They concerns utilization of digital image processing and analysis methods in process of wetting tension and contact angle measurements at high temperatures.

Computerized system for assessment of quality of solders

Computerized System for Assessment of Quality of Solders Dominik Sankowski, Jacek Senkara, Krzysztof Strzecha Absnacr Assumptions for building computerized system for assessment of quality of wlden are presented in this paper. This tester will allow to provide technologibl investigations within the framework of statandarired t n k for tho development of ne6 technologies and inspection of the implemented ones. parameters, and finally from the requirements to be met by a joint. . . II. PHYSICAL PRELIMINAR~ES

Application Of The Edge-Based Image Segmentation

In this paper computerized system fcr high temperature measurements of superficial properties has been presented. The process of superficial properties determination is based on digital image processing and analysis algorithms. Image segmentation methods in aforementioned system have been discussed. Particular attention has been paid to new approach for edge-based image segmentation involving parallel performance of gradient operator and thresholding mechanism

Image segmentation algorithm based on statistical pattern recognition methods

Presents a newly developed segmentation algorithm, based on k-NN statistical pattern recognition rule. This algorithm uses arbitrary surface description as the primitive and can be described as a region growing method.

New segmentation algorithms of metal’s drop images from thermo-wet system

In this paper new metals drop image segmentation algorithms are presented. They concern utilization of digital processing and analysis of drop images at high temperatures in a process of wetting tension and contact angle measurements.

Algorithm for Accurate Determination of Contact Angles in Vision System for High-Temperature Measurements of Metals and Alloys Surface Properties

In this paper problem of contact angle determination using image processing and analysis algorithms is considered. Specifically, algorithms developed for computerised system for high temperature measurements of surface properties of metals and alloys are introduced. Application of the proposed methods allows to overcome limitations caused by specimen intense thermal radiation and obtain accurate values of surface tension in a wide range of temperatures.

The development of image processing and analysis unit for building a solderability tester

Absfrcrd In this paper problems which occurs during development of image processing and anaIysis unit for hightemperafure measurement system are presented Described vision unit were built especially for computerized sysiem for measurement of solderability by means of measure of the basic measurabIe quantifies characterizing interfaciaI interactions: the surface energy (suface tension) of the liquid phase and the exlreme weftability of the base with liquid

Application of k-NN based segmentation algorithm in system for automated measurement of surface phenomena

This paper presents the application of a new segmentation algorithm in a computer-based system for high temperature measurements of superficial properties. This newly developed segmentation algorithm is based on statistical pattern recognition theory.