Izvorni znanstveni članak
Evaluation of Original Software for Area Measurement in Medicine and Dentistry
Sandra Anić
; Zavod za ortodonciju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Mladen Šlaj
; Zavod za ortodonciju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vlatko Pandurić
; Zavod za dentalnu patologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vesna Gaži-Čoklica
; Zavod za ortodonciju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
The aim of the study was to determine the possibilities of a computer system and original software application for area measurement and to test its precision by means of a computer, comparing it with conventional manual measurement. The purpose was not to prove greater precision of the computer measurement of areas, but only to check whether the computer could measure digitized images of life size objects with adequate precision, approaching as closely as possible manual measuring. The main characteristic of the computer arrangement is the possibility of digitizing the image by means of a high-resolution video-camera together with video adapter and software application. The geometrical plane surfaces (equilateral triangle, square, rectangle and rotated square) were precisely drawn by means of the computer and graphics software package Corel Draw 4,0, and subsequently cut out with a plotter cutter. After the computer measurement, the conventional manual measurement was carried out with the sliding caliper "Meba", with 0.1 mm precision. Each geometrical plane surface was measured 10 times. Comparing the results it is evident that X . and X in each 1 ° mm. max. measurement are within the interval of reliability of 99%. Although the difference between the mean at each measurement falls within the area of acceptable nul-hypothesis, it must be taken into consideration that for both measurements there was no significant difference between the means. Namely, both measurements, regardless of the different variability coefficient and different interval of reliability, do not differ significantly. The precision of area measurement by means of a computer is adequate and almost equal to conventional manual measurement.
Ključne riječi
computer systems development and evaluation; computer software
Hrčak ID:
97650
URI
Datum izdavanja:
15.9.1999.
Posjeta: 1.592 *