Figure 1A shows the bit errors highlighted in Layers with Blending set to Difference. The procedure is outlined as follows. Click on top color square in the left side palette to bring up the Color Picker for the Foreground color. Click Okay. 2. Select the Rectangular selection tool from the Tool Palette.
Bit errors are most frequently at the beginning and the end of the image.
Use the Rectangular selection tool to draw a box around the area containing the bit errors. Go right to the edges. If more than one area of the image needs bit error reduction, work on one at a time. You should see the bit errors selected as shown in Figure 1B. If scattered pixels of the good data in the image are selected that is acceptable. If large portions of the image are selected, which sometimes happens with the blue channel, select Undo and repeat this step with the Fuzziness set to a lower number.