What color should I choose for the photographic background wall?

Images with high contrast are easy to cut, and it is better to have a higher brightness. In short, it is a good foundation for big contrast and obvious boundaries.

Beginner PS matting method;

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