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, pattern, or a 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.
Working with RGB Images, Image Math Commands, Extract Channel