Channel replacement in the color palette used more widely, you can quickly get a simple two-color picture. Later only need to fine-tune the color to get a good monochrome or multi-color picture, the process is very simple.
1, open the material picture, the background layer to copy a layer, into the channel panel, choose the Green channel, press CTRL + A Select all, press CTRL + C copy. Select the blue Channel Press CTRL + V paste, and then point to the RGB channel to return to the layers panel, the effect of the following figure. This step quickly eliminates the noise of the picture.
< map 1>
2, create hue/saturation adjustment layer, adjust the cyan, parameter settings such as Figure 2, the effect is shown in Figure 3. This step turns the cyan in the picture to dark yellow.
< map 2>