The first trick: use the alpha1 channel to choose a line
1. Scanning manuscript usually we draw a manuscript on white paper, and the hand drawn manuscript is guaranteed to be finely colored after scanning, using a high-point resolution as much as possible, such as 300DPI. The scanning diagram of this example is shown in Figure 1.
2. Adjust the contrast to modify the brightness and contrast parameters in the "Image → Adjustment → Brightness / Contrast" of the Photoshop menu, so that the contrast of the image becomes large, the line is clearer. Use the pen brush, eraser and other tools to scan the miscellaneous points and gray spots to make some lines detail to make it clearer.
3. Copy the picture to the Alpha1 channel in our trimming-handed picture, first click "Select → All Choice" in the menu bar, then click "Edit → Copy" to stand, then adjust the channel panel, in the channel panel Click the "New Alpha Channel" button. Then click "Edit → Paste", the picture just copied is copied on this channel and can be browsed on the small icon in the channel (Figure 2).
4. Change the channel color point "image → adjust → reverse phase". In this way, the largest map in the middle of the screen turns into a black line, and the small browsing icon on the channel panel also changes (Fig. 3).
5. Copy the line Press and hold the CTRL button, click "Alpha1 Channel" with the mouse, and the white line in the picture is all selected. Then click on the top "RGB" channel in the channel panel to return to color mode, press "Ctrl C" to copy, press "Ctrl V" and press "Ctrl V", now look at your line and bottom is very clean. ? Figure 4 is a transparent view.
Edit Review
The first trick is to use the principle of black and white ash in Alpha channel. There are only three colors of black, white and gray in the Alpha channel. When the selection is loaded, only the white portion is selected, gray is used as a translucent, and the black is not in the range of selection, and we have access to the original color mode to do our desired operation.
The second trick: Mask selection is more convenient
Then, step 2 above, press "Ctrl A" to all select "Ctrl C" copy, then double-click the mask button under the toolbox, set up in the pop-ups option Control Panel option, set The setting of Figure 5 (which has been entered into the mask mode). Press "Ctrl V" and then paste it. Now you will see the original black line is translucent red coverage, then you will be excited to find that the original picture of the black line is completely cute. The dotted line will choose again! Then copy the selected lines to paste in the new layer, is it the same as before?
Editor's second movement is also designed to establish a constituency. If you create a selection in normal mode, switch to the mask mode will turn into a color; in turn, if you apply a set color in the mask mode, switch to normal mode these colors It turns into your newly established constituency.
The third stroke: layer mask is selected with a trick
As in the previous step, "all select" and "copy" in the second step, then copy the background layer in the layer panel, then click the New Layer Mask button under the Grading Layer, in the new layer icon The layer mask icon will appear next to it. The icon is surrounded by white box indicates that the current acting is on the layer mask.
Press and hold the Alt key, then click on the layer mask icon, that is, the red circle above the upper left graph, you can only display the layer mask, then press "Ctrl V", you can paste the picture The layered mask (Figure 6).
Keep the layer mask is in the working state, then execute "image → adjustment → reverse phase", so that the line becomes white so that the pictures replicated on this layer will be limited by the layer mask to only display lines. Finally, the layer mask state (the eyes before point the layer can be returned to the layer state), and then hide the background layer to see, you will find that the line will be successfully removed! Edit Review
The third trick is completely different from the role of the mask. The mask is used to determine the selection, and the layer mask is defined by the layer display area. The layer mask is like a "cover layer" above the current layer, and it is similar to the usage of the channel, which can be used in black, white, and ash, which ultimately affect the current layer display: Mask black Partially covers the current layer, that is, not displayed; white hollow, display the current layer; the gray portion shows the current layer in a translucent form.
