Image Window - Image Menus

Colors


Change the color depth of an image to 24 bits, 8 bits, or 1 bit per pixel

Rotate


Rotate an image by the desired amount

Brightness


Modify the image brightness

Contrast


Modify the image contrast

Invert


Invert the pixel colors of the image

Scale


Scale an image to the desired value.

Binarize


Use binarization to convert color or gray scale images to black and white. This is best used for images that have been acquired by a digital camera which have uneven lighting. A slider controls the Background Removal that can eliminate noise and non-text objects from the image. Click here to learn more about the Contrast Equalize and Contrast Maximize options.

Background Equalize


Filter a widely varying image background to more uniform values to make binarization more effective.

Contrast Stretch


Makes darker pixels darker and lighter pixels lighter.

DeSkew


Straightens a skewed image, works on graphics and text. Deskew binarization is controlled by the Image->Binarize Enhance Contrast, Edge Enhancement and Background Removal functions.

Sharpen


Sharpen an unfocused or blurry image.

Straighten Columns


Straightens curved columns of text caused by either distortions from a book spine, perspective distortion or document skew. This function will also attempt to remove clipped columns and graphics abd will not straighten singles or coumns that are 4 lines or less. Straighten Columns binarization is controlled by the Image->Binarize Equalize Contrast, Maximize Contrast, and Background Removal settings.

Thicken Text


Makes text outlines thicker.

Magnify 2X


Magnify 2X in each axis the currently displayed image, this same operation can also be done with the "+" hotkey.