Extract Byte Plane

The Extract Byte Plane command extracts single byte planes from an image having more than 1 byte per pixel. The result is an image containing the bit component of the original image offset by 8 bits for Byte 2, 16 bits for byte 3, and so on. If the image has greater than 8-bit (1 byte) bit depth and more than a single byte plane is extracted, the byte plane images may be saved either as single images in separate windows or as an Image Set in a single window.

The Extract Byte Plane command opens from the Image Window > Process > Math menu and button on the Main Toolbar. The "immediate" form, shown first, opens when an image or image set is displayed in the top-most window. The general form can be used to select source images from folders, windows, or by matching templates.

Extract Byte Plane Properties
Profile [\|>]	Selects the parameter profile for this command and allows you to save or work with existing presets.
[Select]	Opens the Select Source Images dialog to choose images from an image window, folder, files, name template, or a Mira File List.
Extract	Check these boxes to select byte planes to extract. Each byte plane creates a new image. Byte 1 extracts the first byte plane at offset zero (i.e., the lowest order byte), and so on, through the 8-th byte.
Create Image Set	Check this box to extract the channel images to an Image Set in a single image window.

For integer type images, the pixel values in the original image are the sum of scaled values in each byte planes, where each plane has scale factor 1, 256, 256*256, and so on. For example, suppose the original image is unsigned 16-bit type and a pixel value is 2200, Then 2200 is represented by bytes 1 and 2 as 2200 = 8*(256) + 152. Thus byte plane 1 (the least significant byte) would have value 152 and byte plane 2 would have value 8.

Related Topics