The channel mixer is similar to the channel cutout, but the channel mixer setup is simpler, while the background part of the color can be randomly adjusted to white or black, so as to save a lot of color matching process. Later use brush to deal with hair details.
Final effect:
Original:
First, Photoshop opens the file.
Second, the observation channel can be found, hair is black and white, two diametrically opposite tones, in this case, it is difficult to use a technology to distinguish between them, we can consider each of them to deal with, and finally the processing of the selection after the merger can be. In the passage, the white hairs are clear and relatively easy to select, while brown hairs are difficult to handle in several places. The brown hair on the dog's forehead is close to the hue of the red door, difficult to distinguish, this is a difficult point to deal with; the overall tone of the dog's ears is deeper than the tones of the door, and there is a certain tonal difference between them, but it should also be noted that each side of the ear has a lighter hue than the door groove, They are two other difficulties in this case.
Third, copy the background layer, perform the image-adjust-"Channel mixer" command, check the "monochrome" option, drag the slider left and right to get the grayscale image effect.
Four, we first to deal with the dog's forehead hair, observe the hair on the forehead can be seen, after the "channel mixer" treatment, the dog's forehead on the background of the basic into white, the remnants of the use of Brush tool processing can be. Select a soft corner brush tool and set the tool's blending mode to "overlay" in the Tools Options bar, with a transparency of 10%, and use black to smear the hairs on the forehead to deepen the hair. Then smear the background with a white brush to make the background white.
Set the blending mode of the brush tool to "normal", increase the opacity of the tool, and smear the brown hair on the dog's forehead as black. In the process should be careful not to smear the edge of the hair black, should keep it gray, and retain the necessary tonal excessive. Otherwise, the hair will be very blunt, but also with a residual background.
Six, with the rectangular selection of the box tool to select the left side of the intersection with the door cross area. Select the Brush tool, set the blending mode of the tool to "overlay", set the tool's opacity to 20%, apply black in the selection, and deepen the background.
Use white hair to make them clearer, press the Ctrl+i shortcut key to reverse the image in the selection.
Classification: