Cropping of Raster Images

Editing of Raster Images

The size of raster image can be reduced to determined area by using Crop operations. This area can be determined by set clip of image or rectangle. Also, raster can be cropped automatically using procedure that determines empty image fields and crops them.

These operations apply to multiple images at once. For example you can crop pack of images by placing them on top of each other.

Automatic crop

Automatic crop trims the "empty" image field to the smallest possible rectangle that includes all raster data.

    Ribbon: Raster – Crop – Crop >  Auto

    Menu: Raster – Crop –  Auto

    Toolbar: Raster –

 Command line: CROPAUTO

1.    Select raster to be processed on the screen. If there was no selected images, then the command processes all visible images placed in non-locked layers.

2.    Run the command.

Original raster image

The result of the Automatic crop command

Auto crop by frame

If the raster has a frame, then the command automatically changes the size of raster by the frame.

    Ribbon: Raster – Crop – Crop >  By Frame

    Menu: Raster – Crop –  Auto by frame

    Toolbar: Raster –

 Command line: CROPBYFRAME

If the image has deformations, use the Deskew command for correct CROPBYFRAME behavior.

1.    Select raster to be processed on the screen. If there was no selected images, then the command processes all visible images placed in non-locked layers.

2.    Run the command.

If the raster has no frame, then the result of Auto crop by frame is similar to the Crop →  Auto.

Crop by Rectangle

Cropping can reduce an image size to a specified rectangular area size.

    Ribbon: Raster – Crop >  By Rectangle

    Menu: Raster –  Crop by Rectangle

    Toolbar: Raster –

 Command line: CROPBYRECT

1.    Start the command.

2.    Specify two opposite corners for the rectangular area in the raster.

Parts of an image outside the specified area are cropped.

Crop by clip

    Ribbon: Raster – Crop >  By Clip

    Menu: Raster – Crop –  By Clip

    Toolbar: Raster –

 Command line: CROPBYCLIP

To crop the raster by clip, the clip of the raster image should be predefined (Modify → Clip → New… command).

1.    Select raster to be processed (visible and placed in non-locked layers). If there was no selected images, then the command processes all visible images placed in non-locked layers that have the clip.

2.    Run the command.

The raster image will be cropped by the clip of the raster image.