TrimImg

Command line: TrimImg

Description: cut image

TopoLT toolbar:

Menu: TopoLT » Images » Cut image

Using this command you can cut an image so that to keep from it the section you are interested in.

The selected image can be deformed, rotated or flipped (mirrored).

Cutting subregion can be the image subregion defined with ImageClip or you can select a limit defined by a polyline with or without arcs, a circle or an ellipse.

After selecting the thumbnail image will be loaded in order to make preview.

Cutting options

Background color can be chosen from color palette or selecting the color of a pixel from thumbnail image. Color that is chosen from palette is reduced to the color format supported by image. For example you can not choose for background red color for a B/W image.

Drawing cutting limit. If this option is chosen then the limit of the cutting subregion will be drawn. Drawing subregion contour is made with lines of one pixel width and with the color from drawing of image entity or with the color of cutting limit.

Drawing at preview image border is useful to visualize position of the whole image. Lines with image borders are not drawn in the image that will result after cutting.

Resulted image

Here are posted information about image that will result after cutting.

Dimension in pixels depends on the minimum or maximum of cutting limit.

Size of the file that will result is approximated between a minimum and a maximum. There can not be calculated exactly for encoded images just after making the encoding.

Using command Uimg can do return to previous images.

Initial images are saved in files with extension .bk1, .bk2, etc. when they are modified. Files with extension .bk1, .bk2, etc. are used for returning to initial images using command Uimg. Deleting these file will be done manually only after images transformation process ends.

Note: Color tif files are not saved with compression LZW that is why we recommend you to use Windows programs to compress them.