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Interactive applets supporting teaching digital image processing
Křivánek, Jiří ; Mangová, Marie (referee) ; Rajmic, Pavel (advisor)
This thesis deals with the creation of applications for support of education computer graphics. The aim is to create a simple application which will show the functioning of the various methods. I implemented convolution methods for image filtering, dithering engaged in the distribution errors, bit planes that show each bit plane image, gamma correction to lighten or darken the image and procedural textures. All these methods are created in the form of Java applets.
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Perception of radiation burden and of examination in patients undergoing computed tomography.
Lambertová, Alena ; Harsa, Pavel (advisor) ; Ptáček, Radek (referee) ; Křivánek, Jiří (referee)
Purpose: The aim of the first part of this work was to evaluate the trend of the number of head CT examinations in patients with minor head injury in emergency service and to find out whether it has objective causes. The aim of the second part was to assess patients' knowledge regarding the CT examination, its risks, the source of their information and to evaluate the effect of providing information about the CT examination in a printed form. Method: In the first part of the work, we extracted data from the radiological module of the hospital information system. We searched for head CT scans in patients with minor head injury and their input characteristics and findings on CT. Further data were obtained from the hospital, the Institute of Health Information and Statistics and the Czech Statistical Office. Trends of regression curves were compared by F-test, correlation of trends was expressed using Spearman's coefficient. The second part of the work was based on a questionnaire for patients scheduled for CT scan of the body. The questionnaire included demographic data as well as items assessing patients' awareness of the risks of radiation exposure, intravenous contrast media, their sources of information and their fear of the examination. On the second page, Zung's Anxiety Scale was printed. On...
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Interactive applets supporting teaching digital image processing
Křivánek, Jiří ; Mangová, Marie (referee) ; Rajmic, Pavel (advisor)
This thesis deals with the creation of applications for support of education computer graphics. The aim is to create a simple application which will show the functioning of the various methods. I implemented convolution methods for image filtering, dithering engaged in the distribution errors, bit planes that show each bit plane image, gamma correction to lighten or darken the image and procedural textures. All these methods are created in the form of Java applets.
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