8_Dental_Radiography

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Student’s Laboratory, Department of Biophysics VI. Manuals for Scanner Agfa SnapScan 1236u and ScanWise program Program ScanWise makes possible scanning documents, pictures, slides, radiograms and so on using of colourful scanner Agfa SnapScan 1236u installed in the system. After placing document in scanner close cover and start the program clicking twice ScanWise icon. On the screen appears the window of ScanWise program with previously scanned document visible (Fig. VI. 1.). 1) Preliminary scanning. The first operation executes with scanner after achieving temperature of work is preliminary scanning (Preview) and displaying in window of preview the results. Dimensions and position of frame box in Preview image we can change with help of the left mouse's key, establishing what size we want to scan. Scanned area should contain all important for further work elements. After exchange of the document on a new one we should execute preliminary scanning always first, in this aim press the key Preview in the upper part of screen. Fig. VI. 1. The start window of the ScanWise program. 2) The settlement of mode of work. Scanner makes possible scanning of pictures, paintings, text (mode "reflective”) as well as scanning of slides, negatives, X-ray films (mode ”transparent”). The mode of work is chosen in upper part of the window of program. Dental Radiography 4
Student’s Laboratory, Department of Biophysics 3) Options of the program. Options of the program are grouped below key Preview in several groups: Oryginal Type, Destination, Image Control and Dimensions. The appearance of panel changes in dependence on choice of the option and shows second level options in the left side of screen (on the drawing it is showed for option Oryginal type opened). Fig. VI. 2. Details of the the ScanWise program main window: Options setting. 4) The settlement of type of document to scanning. In dependence on what kind of document has to be scanned, scanner in different way optimizes its work. Option Oryginal Type permits to choose type of document what has to be scanned. In case of work in transparent mode to choice are only two types: Slide and Negative. For scanning X-ray films we choose option Slide. 5) Place of destination of digital painting. Digital image is placed after scanning in memory of the computer. Its place of destination should be defined before scanning. Option Destination gives several possibilities of choice. During laboratory choose option of the recording images in files of BMP type on your disc, in aim of processing. To record image on disc in file we choose second level option File, unlocking dialogue little window, you should qualify: the name of file (File Name), the location (Path) and the type of file (File type). We record all files in team folder (!), under any name, and as type of file we choose Bitmaps file (“name".bmp). During scanning the next fragments of document or the next document, the program will use the same, chosen by us name adding the next numbers, and do it so long, until we do not change the name of target file. 6) Matching quality of image. The option of Image Control makes possible matching with sliders quality of images: defining the clearness (brightness), the contrast (contrast), the saturation (saturation) and the threshold (threshold). Number and the kind of accessible options depends on kind of painting that we want to get. The type of painting (or the number of colours of painting) we choose using three keys: Color (the colourful painting), Grayscale (painting with using the grey-scale), LineArt (the black and white painting). In case of colourful paintings and in scale of greyness the additional filter is including also (option PhotoGenie). During scanning the sensitometer scale do not alter the value of clearness and the contrast, we do not use the additional filter also. We choose as type of the painting Grayscale. 7) The settlement of size and the resolution of painting. The option Dimensions permits to choose the quality of painting across setting the resolution. This may be realised in different ways, establishing the linear dimensions of painting with known resolution or altering scale; we can change resolution also. The change of dimensions does not mark the change of sizes of area marked in field Preview, Dental Radiography 5
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