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# Practical

You will be given a demostration of some basic functionality of the software to give you an idea of what to expect. You then need to familiaries yourself with the basics ready for the laboratory sessions during the rest of the course.

Have a look at the introductory sections in the TINA user guide on the web regarding file I/O and Tv displays. In addition you will need to refer to the sections describing the image calculator `` Imcalc Tool".

Once you have started TINA you will be confronted with a series of windows. One of these is the mono tool which enables you to load images. The other is the imcalc tool. There are also two Tv displays, one of these is used to display the image the other is used for display graphs.

Load the house.l image into the monotool and push the image onto the image stack and displaying it in the Imcalc Tv (hint: if it doesn't appear automatically use the Tv int button or you may have to install it with the install button).

You are now ready to start using the system for image analysis. Explore the functions in the image calculator using TINA in conjunction with the online user guide. The software also contains built in ``help'' buttons on many parts of the interface which provide a short form of user documentation including the parameters each function requires. Make sure you master the the following tasks;

• Display profiles and histograms from selected regions of the image. Use these to try and estimate the the level of image noise from the plots you see.

• Load multiple images onto the stack, around which the imcalc tool is built (i.e. the right house image house.r). Try adding, subtracting and multiplying images. Try shifting and adding them together.

• Scatterplot the two house images using the scat button. Use the sqrt to make the image visible. Select a region and inverse scatter, (iscat, to recover the regions which share these grey-levels. The more adventurous students may wish to try to use the online code browser to see what is going on.

Next: Fourier Transforms and Image Up: Introduction Previous: Getting started   Contents
root 2018-10-23