Work with selections, measure area and volume, make statistical analysis of a selected area

There are seven selection tools available in the program: rectangle, polygon, circle, ellipse, free hand, magic wand and eyedropper. With these tools you are able to select a portion of an image. With any of these tools you can create a new selection, add to an existing selection, subtract from a selection, or select an area intersected by other selections. The selected area is marked with a dashed, rotated, black and white line. You can use the selection tools to apply a filter in a portion of the image, to measure area and volume of the selected portion or to make a statistical analysis (maximum, minimum and mean values standard deviation etc). You can export the selected area to a text file (in form of X position, Y position, Value) for further analysis with other programs (e.g. MATLAB or ANSYS).

• Selection tools accuracy
• Selection tools
• Selection operations
• Selection statistics, area and volume measurements
• Export a selection to a text file
• Keep many selection as Regions Of Interest (ROI)
• Export ROI statistics to Word Document
• Modify a selection: expand and contract
• Modify a selection: similar and grow
• Modify a selection: inverse selection
• Crop to selection
• Apply Level-Window from selection

The Selection tools of the program are very accurate. They have been tested for their accuracy against other well-established image processing tools like Adobe® Photoshop^TM and Corel® Paint Shop Pro^TM. The statistical results (number of pixels, minimum value, maximum value, mean value, standard deviation, etc.) for the same selected area, are the same for all programs.

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Rectangle:
The rectangle tool lets you select a rectangular area of your image.
Polygon:
The polygon tool lets you draw straight-edged segments of a selection border.
Circle:
The circle tool lets you select a circular area of your image.
Ellipse:
The ellipse tool lets you select an elliptical area of your image.
Free Hand:
The free hand tool lets you draw freehand segments of a selection border.
Magic Wand:
The magic wand tool lets you select an area of similar colors without having to trace its outline. You specify the color range, or tolerance, for the magic wand tool's selection. When you have selected an area with the magic wand tool and before change tool, if you modify the tolerance the selected area is modified accordingly with new tolerance.
Eyedropper:
The eyedropper tool lets you select areas of your image with similar colors. You specify the color range, or tolerance, for the eye dropper tool's selection. When you have selected an area with the eyedropper tool and before change tool, if you modify the tolerance the selected area is modified accordingly with new tolerance.

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NOTE: Selection operations are available in all selection tools and in any combination of them. In the example is used the selection rectangle tool.

Selection Addition
Before you select the second area hold down the <SHIFT> key of the keyboard, and then use your mouse for the second selection.


Selection Subtraction
Before you select the second area hold down the <CONTROL> key of the keyboard, and then use your mouse for the second selection.


Selection Intersection (common area)
Before you select the second area hold down the <SHIFT> and <CONTROL> keys of the keyboard, and then use your mouse for the second selection.


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You can use the magic wand and the free hand tools in combination, to select a complex area of your image.



From menu select "SelectionCurrent selection info". The below dialog box will show the area and volume measurements of the selected area, and a simple statistical analysis. You can adjust pixel spacing and slice thickness especially if this information is not included in the file's header. If you have made selections in more than one frame, the dialog box shows the details of all selections.



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From menu select "Selection Export to Text File". The selected area of the current frame is exported in the form of X position, Y Position, Value. You can use these files from other programs, for further analysis.



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Many times you want to create many Regions of Interest for some kind of study. These ROIs are created from selections with the command "SelectionKeep Selection" of the menu. You can keep as many selections as you want, the only limit is computer's memory. Use the command "SelectionSelection Info", to see the details of the selections. Anyone of these ROIs has its color. You can delete a ROI, modify its color, export it to a text file, or restore it back as selection.


From menu select "SelectionSelection info". The below dialog box will show the area and volume measurements of ROIs, and a simple statistical analysis. You can adjust pixel spacing and slice thickness especially if this information is not included in the file's header. If you have made more than one ROIs, the dialog box shows the details of all ROIs.



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You can export selection details to Microsoft® Word^TM.  From menu select "SelectionSend Selection To Word".



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From menu select "SelectionModifyExpand" or "SelectionModifyContract". The current selection will keep its shape, but will be expanded or contracted by a user supplied amount of pixels.



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From menu select "SelectionModifySimilar". This action is the same with the eyedropper tool, the tolerance is adjusted automatically by the minimum and maximum values of the selected area.



From menu select "SelectionModifyGrow". This action is the same with the magic wand tool, the tolerance is adjusted automatically by the minimum and maximum values of the selected area.

 

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From menu select "SelectionInvert". This command makes the unselected area selected, and the selected area unselected.



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From menu select "SelectionCrop to Selection". With this command, the image is cropped to the boundary of the selection.

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You can apply a level-window calculated from the selected area. The center and the width of the window are calculated automatically from the minimum and maximum values of the selected area. Use 1X(window width) for high contrast results and 2X(window width) for low contrast results. This command allows you to view the details of a very dark or a very luminous area of the image, when you don't know what level-window value is suitable for this area. After that, you can use the level-window controls to do a fine adjustment of the window.



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