How to cut a picture with PS

First, the wand method-the most intuitive method

Scope of application: the color difference between the image and the background color is obvious, the background color is single, and the image boundary is clear.

Method intention: Get the image by deleting the background color.

Method defect: it is useless for messy hair.

Usage: 1, click the "magic wand" tool;

2, in the "magic wand" toolbar, in front of the "continuous" tick;

3. Fill in the value of "Tolerance" as "20". (The value can be adjusted according to the later effect);

4. Click the background color with the magic wand, and a virtual box will appear to surround the background color;

5. If you are not satisfied with the range of the virtual frame, you can press CTRL+D to cancel the virtual frame first, and then adjust the tolerance value of the previous step;

6. If you are satisfied with the scope of the virtual frame, please press the DELE key on the keyboard to delete the background color and get a separate image.

Second, the color model method-fast

Scope of application: the color difference between the image and the background color is obvious, the background color is single, and there is no background color in the image.

Method intention: crop the picture through the background color.

Method defect: not suitable for images with background color.

Usage: 1 Pick up the background color with a color straw;

2. Click the "Color Range" function in the "Select" function in the menu;

3. Tick the "Reverse" item, and select the image after confirmation.

Third, the magnetic lasso method-convenient, accurate and fast, is also my usual method.

Scope of application: the image boundary is clear.

Method Intention: The magnetic lasso will automatically identify the image boundary and automatically attach the image boundary.

Method defects: boundary points should be carefully placed on fuzzy boundaries.

Usage: 1 Right-click the Lasso tool and select the Magnetic Lasso tool;

2. Use the "Magnetic Lasso" tool to place boundary points along the image boundary, and a line will be automatically generated between the two points and attached to the image boundary.

3. Boundary points should be carefully placed on fuzzy boundaries.

4. After the cable sleeve is closed, the bedding is completed.

Four, (cable) feathering method-rough machining

Scope of application: Rough floor mat.

Method intention: rough digging, not seeking accuracy

Method defect: the image boundary is inaccurate.

Usage: 1 Click the Lasso tool;

2. Roughly enclose the image with lasso, and the distance between the boundary and the image boundary is almost the same; This can ensure the consistency of feathering range and improve the accuracy of matting;

3. Click the right mouse button and select the "Feather" function;

4. Adjust the feathering value, generally fill in "20", and then roughly select the image after confirmation. The feathering value should be adjusted according to the distance between the border and the image in the previous step.

Five, (cable sleeve) pen tool method-the most accurate and time-consuming method.

Scope of application: the image boundary is complex and discontinuous, and the processing accuracy is high.

Method intention: completely * manually place boundary points one by one for matting.

Method defect: slow. It takes about 15 minutes to dig a picture even if you dig your fingers and feet.

How to use:

The steps of the pen tool method are as follows:

1. The cable sleeve creates a rough path.

(1) Use the lasso tool to roughly outline the characters;

(2) Right-click "Create Work Path", and generally fill in "2" for the tolerance.

2. Fine-tune the path of the pen tool

(1) Select the pen tool and select the second "path" icon in the pen toolbar;

(2) Hold down the CTRL key, click each node (control point) with the mouse, and drag to change the position;

(3) Each node has two radian adjustment points, and adjusting the radian between the two nodes makes the straight line as close as possible to the edge of the graph, which is the key step of smoothing;

(4) Add nodes: If there are not enough nodes, you can loosen the CTRL key and add them on the path with the mouse. Delete node: If there are too many nodes, you can loosen the CTRL key and move to the node with the mouse. When the "-"symbol appears next to the mouse, click the node to delete it.

3. Right-click "Create Selection", and generally fill in "0" for feathering.

Press CTRL+C to copy the selection;

Create a new layer or file;

In the new layer, press CTRL+V to paste the selection, and that's it!

Deselect shortcut key: CTRL+D

Note: this tool is useless for messy hair.

Six, mask matting method-intuitive and fast

Usage: 1 Open photos and background images.

2. Click the move tool to drag the photo onto the background image.

Step 3 add a mask

4. Set the foreground color to black and select the brush 45.

5, so that you can wipe on the background until you are satisfied. If you wipe the wrong place, just change the foreground color to white and you can wipe it back.

Beginner PS matting collection professional edition

First, the eraser pad

Methods, characteristics and scope of application: Eraser matting is to erase unused parts with eraser tools and leave useful parts. This method belongs to the shape matting method, which is simple and easy to use, but the processing effect is not good, and can be used for graphic matting with simple shapes and lines. But it is mainly used for further processing the effect of other methods after matting.

Operating steps:

1, open the picture;

2. Double-click the layer to change the background layer to a normal layer.

3. Select the eraser tool, and then select a brush with a larger main diameter. First, roughly erase most of the unused parts.

4. Select the small point of the main diameter of the brush, enlarge the picture and carry out fine processing.

Second, the magic wand cuts the map.

Methods, characteristics and scope of application: Magic wand matting is to use magic wand tool to select unused parts, or to select the parts to be used and then reverse them, and then delete them, leaving useful parts. This method belongs to the category of color matting, which is easy to use, but not suitable for achieving the expected effect. Therefore, it can only be used for matting when the color difference between the used part and the unused part of the picture is large, or as an auxiliary method of other matting methods.

Operating steps:

1, open the picture;

2. Double-click the layer to change the background layer to a normal layer;

3. Select the magic wand tool, and take an appropriate tolerance value in its attribute column (when the color difference is small, a smaller value must be selected, generally 20); If the graphic color difference is large, you can choose a larger value of 80;

4. Click on the background;

5. Edit/Clear

Third, the path is paved

Methods, characteristics and scope of application: Path matting is to circle the part to be used in the picture with pen tool, then load the path as the selection, reverse the selection, and then delete the unused part from the layer. This method is also a shape matting method, which can be used to matting pictures with complex shapes and small color difference. With the help of rubber polishing tools, good results can be achieved.

Operating steps:

1, open the picture;

2. Double-click the layer to change the background layer to a normal layer;

3. Select the pen tool and select parameters in its property bar;

4. Circle the parts to be used in the drawing;

5. The end point is connected with the starting point to form a closed area;

6. Click the Load Path as Selection button under the Paths panel;

7. Select/deselect.

Fourth, mask matting.

Methods, characteristics and scope of application: mask matting is a comprehensive matting method, which uses the shape and color of objects in the picture at the same time. First click the object with the magic wand tool, and then select the object with the Add Graphic Mask. The key link is to reduce and add the mask area repeatedly with a black and white brush, so as to select the object shape completely and carefully.

Operating steps:

1, open the picture;

2. Double-click the layer to change the background layer to a normal layer;

3. Select the magic wand tool with a large tolerance (50-80), press and hold the Shift key, and click to select all objects for many times;

4. Press the Add Mask Tool button;

5. Enlarge the display scale in the navigator panel and highlight the part to be modified;

6. Choose black as the background color and white as the foreground color;

7. Select a brush tool with a diameter of about 10, and add a mask area to the part to be modified;

8. Reduce the brush diameter (5-7), change the foreground color and background color, make the foreground color black, and subtract the redundant part;

9. If it is not ideal, repeat steps 7 and 8 to achieve satisfactory results.

Verb (abbreviation for verb) channel mask

Methods, characteristics and scope of application: Channel matting is a color matting method, which uses the flat contrast of objects in red, yellow and blue channels to process objects in high contrast channels. First, select the channel with high contrast, then copy the channel with further increased contrast, and then select the object with the magic wand tool. It can be applied to the matting of hair, branches, fireworks and other images with small color difference and complex appearance.

Operating steps:

1, open the picture;

2. Double-click the layer to change the background layer to a normal layer;

3. Open the channel panel and click on the red, yellow and blue monochrome panels to find out the clearest channel of the object. We click on the blue channel in this picture.

4. Drag the blue channel to the Create New Channel button under the Channels panel to copy the blue channel;

5, image/adjustment/color scale, adjust the "input color scale" to enhance the contrast of the object;

6. Mirror/adjust/reverse;

7. Circle fireworks and other patterns with lasso tools;

8. Select/deselect, edit/fill/fill the foreground color (white), select/deselect;

9. Mirror/Adjust/Reverse;

10, press and hold the "Ctrl" key, click the blue copy channel, load the selection of fireworks, switch to the layer panel, and the fireworks are selected;

1 1, select/deselect, edit/clear; Select/deselect

Of course, there are also many professional skills, such as extracting the foreground color and setting it to white, and then inserting extra colors with rubber bands ... to extract hair and hair by enhancing contrast and sensitivity. ..........................................................................................................................

Discussion on PS matting skills in PS course

In many tourist attractions, there is a rapid synthesis of landscape photos to commemorate, that is, people are superimposed on fixed landscape photos, but the photos produced are relatively rigid. Photoshop darkroom makes it easy for us to make all kinds of synthetic photos, and thanks to the powerful function of Photoshop, you can completely confuse the real with the fake, so that you can "travel around the world" without leaving home.

The premise of making this kind of composite photos is perfect matting, which can be achieved by perfectly separating the composite object from the original background, and then using Photoshop's powerful filter function to do some light and shadow effects.

Cutout is the most critical step, and there are various methods, such as lasso, wand, mask and so on. This is the most commonly used. But when it comes to portrait matting, especially human hair matting, simple tools can't achieve satisfactory matting effect. This paper mainly introduces the skills of using Photoshop channel to realize quick and simple matting.

1. In Photoshop, open the original subject image (Figure 1).

Figure 1

Press F7 to open the channel panel. Generally speaking, the photos taken by DC are in RGB mode. Find the channel with the strongest contrast among R, G and B channels, that is, the channel with the highest contrast, so that it is easy to separate the subject from the background. In this picture, select the blue channel (Figure 2).

Figure 2

2. Copy the blue channel (drag the blue channel to the "Copy Channel" button below) to generate a new "blue copy" of the channel (Figure 2).

3. Select "Image → Adjustment → Inversion (Ctrl+I)" (Figure 3), and the result is shown in Figure 4.

Figure 3

Figure 4

4. Adjust the color scale of the new channel "Blue Copy" and select "Image → Adjust → Color Scale Dialog (Ctrl+L)" (Figure 5). The black-and-white triangle moves to the middle to further increase the contrast.

Figure 5

5. Call the color level adjustment again, and click the gray level of the face with a white straw to achieve the effect that the face is as white as possible and the back is as black as possible (Figure 6).

Figure 6

If this method is not enough to achieve the effect, you can use eraser, lasso and other tools to deal with it and finally achieve the effect (Figure 7).

Figure 7

6. Hold down Ctrl and click the blue copy of the channel to select the white part and load it into the selection area (Figure 8).

Figure 8

In order to make the edge transition of the cut picture more natural when it is pasted on other backgrounds, it is generally feathered before copying (Figure 9), and the feathering radius is generally selected as 1-5 (choose an appropriate value according to the size of the picture).

Figure 9

7. Click the RGB channel (Ctrl+~) to return to the color mode, copy the circled main part, then open a background picture, paste and adjust the size of the main picture to the appropriate size, and move the main body to the appropriate position (Figure 10).

Figure 10

8. However, as the two photos are taken under different illumination, cracks will appear in the light direction, so the pasted layers should be illuminated after simple synthesis (Figure 1 1).

Figure 1 1

Select "Filter/Render/Lighting Effect" and adjust the direction and range of lighting (Figure 12). See figure 12 for the effect after dimming.

Figure 12

9. At this point, the process of matting synthesis has been completed. It is suggested to try to paste the main body of the matting on different background layers, and the effect is the best, as shown in figure 13, named "Flower Fairy".

Figure 13

Figure 14 is a standard portrait landscape map. In the process of composition, we should not only pay attention to the direction of light, but also pay attention to the size, distortion and perspective of the subject and background, so as to make a perfect composite photo and reach the point of confusing the fake with the real.

Figure 14

The matting method introduced here is more suitable for comparing original photos, especially human or animal hair, but good matting can only be achieved by comprehensive use of various tools. I suggest you practice more. It only takes 5 to 10 minutes to get a similar picture after proficiency. Try it quickly!

PS matting skills daquan

PS Encyclopedia of Cutout Skills comprehensively explains a variety of commonly used matting methods in PS. The second method, the layer mode matting method, is rare, but very convenient. You just need to change the background to white, then change the layer blending mode, and then draw a little with the mask, and it will be soon. Other methods are basically common. When matting, you need to set the best method according to the specific picture.

original drawing

Final effect

First, pull out the matting method of the filter.

10 1. Open the picture, and press ctrl+j twice to get copies of the layer 1 and the layer 1 respectively.

102. Click the red circle, and put the new layer 2 between the layer 1 and the background layer as a check effect and a new background layer, and fill it with colors.

103. In the layer 1, execute the filter-extract command, check the forced foreground, and use the eyedropper tool to pick up the color in the red circle.

104. Paint your hair green with a glossy tool.

105. After confirmation, the hair will be pulled out.

106. Enlarge the picture to 400%, and remove the mottled hair edges with an eraser or a mask to make the picture clear.

107. Add a mask on the red circle of the copied layer of layer 1 and draw a new background with a black brush.

108, see the effect

Second, the key methods of layer model

20 1. Open the picture and press ctrl+j twice to get copies of the layer 1 and the layer 1 respectively.

202. Click the red circle, and put the new layer 2 between the layer 1 and the background layer as a check effect and a new background layer, and fill it with colors.

203. Execute the image adjustment gray command on the layer 1. Click on the red circle in the picture with a white straw, and the original gray background becomes a white background.

204. Use a white brush to paint the remaining gray background color white.

205. The layer's blending mode is set to positive overlay.

206. Add a mask to the red circle of the copied layer of layer 1 and draw a new background with a black brush.

207, see the effect

Third, the channel selection method

30 1, open the picture, ctrl+j copy the layer to get the layer 1, create a new layer 2, put it between the layer 1 and the background layer, and fill the color as a grid effect and a new background layer.

302. Click on the layer 1 to enter the channel and copy the green channel to get a green copy. (because the level in the green channel is the clearest)

303. Execute the image-adjustment-gradation command. (shortcut key: ctrl+l) refer to the drawing.

304. At this time, there is gray outside the body and hair.

305. Wipe off the gray with a white brush.

306, ctrl+i, the white is black, click the red circle as the selection, and an ant line appears.

307. Go back to the layer, click on the layer 1, ctrl+j to get the layer 3, and turn off the small eyes of the layer 1 to see the hair.

308. Move the layer 1 to the top layer, add the mask, and draw a new background with a black brush.

309, see the effect

[PS tutorial] PS complex edge image matting skills example

Cutout is the basic operation of Photoshop. Path is suitable for making images with neat edges, magic wand is suitable for making images with single color, lock is suitable for making images with clear and consistent edges that can be completed at one time, and channel is suitable for making images with different tones.

For images with complex edges, broken blocks, rich colors, different edge sharpness and large tonal span, it is best to use masks for matting.

The picture below shows a sketch artist in nature with a bad background and needs to be replaced. To dig out the characters and the ground, the path, wand, lock and passage are not easy to use, so use a mask.

background material

Nagging:

1, the production must be fine, constantly adjust the brush diameter and soft and hard parameters, and you can't make do with it;

2, the mask can be repaired, and it is not suitable to re-enter the mask for modification;

3. If the whole image has edges, you can minimize one pixel in the mask.