Extracting a Small Window
When we are working with very large bitmaps generated by rasterizers we often wish to discuss the behavior on a particular structure. In such as case it is helpful to be able to extract from the large and unwieldy bitmap, a small window of pixels surrounding the region under consideration.
If you have multiple layers loaded only the "active" layer is extracted. Future versions of this software may enable extraction of multiple layers to a single file.
The Extraction Dialog
The extract function is launched from the menu File | Extract.
Methods of Specifying a Window
Select Window - shifts focus to the display where the user selects the window using the mouse.
Current Window - uses the extents of the display window
Lower Left and Upper Right - user enters the lower left and upper right corners of the window into the fields provided.
Center, Width and Height - user enters the window center and its width and height.
Output FormatsOutput formats are BMP, TIFF and RAW. If TIFF is selected the user can choose uncompressed or compressed (using packbits).