Introduction to the article:
First, common treatment methods
1. photo resizing
2. Automatic adjustment
3. Manual modification
4.4 the actual effect and processing skills. Digital photo processing.
Second, a simple example.
First, the main treatment methods
1. photo resizing
Generally, the photos taken with digital cameras are in the specifications of 1024*768, 1600* 1200. Depending on the brand and model of digital camera, some photos can even reach 3040*4048, so it must be too big to make photos into electronic works. Using Photoshop to process the photo size and reduce it according to a certain proportion can ensure the original photo quality unchanged. Import photos into Photoshop, select Image Size under the Image menu, and then modify the photo size in Pixel Size of the Image Size dialog box. By default, the photo size is scaled according to the constraint scale. If this option is not selected, you can select it in the dialog box.
Pixel size shows that the current photo has a capacity of 35.2M and a size of 3040*4048. Obviously, this photo is not suitable for making electronic works. The width of the photo can be adjusted to 400 pixels, and the height will be automatically reduced according to the constraint ratio. At the same time, the capacity of picture display will be reduced correspondingly in pixel size.
2. Automatic adjustment
Due to the technical reasons of shooting, photos generally have shortcomings such as insufficient color, dim light and poor focal length exposure. Therefore, it is best to use its automatic adjustment function in Photoshop to simply modify the effect of photos. Select Adjust under the image menu, and then select Auto Color, Auto Contrast and Auto Levels for simple processing.
3. Manual modification
There are many professional options for color, saturation, brightness and other effects under the "Adjust" function, and you can set various effects of photos in detail. However, I recommend using "color scale" and "curve" for manual modification, so as to deal with the effect of the photo as a whole without distortion. Color scale, select "RGB" mode in the channel of the color scale dialog box, and then adjust the nodes below to adjust the brightness and contrast of the whole image.
Curves, curves and gradient effects can change the lighting effect of photos. As shown in Figure 5, when the mouse turns into a cross and moves to the left, the brightness of the photo increases, and when it moves to the lower right, the overall color of the photo darkens.
4.4 the actual effect and processing skills. Digital photo processing.
The following are some practical effects and processing skills that Photoshop CS software can do in digital photo processing.
(1). A panoramic tool is added 1).Photoshop CS, which is completely designed for post-processing of digital photos. With it, you can easily make 360-degree panoramic pictures.
(2) If the lighting effect of the photo is not good, you can apply the design function of Photoshop to repair it, such as using layers for processing.
(3) Using Photoshop's filter tools, you can carry out various special effects on photos. For example, using Gaussian blur filter combined with the application of layers can make photos into sketches.
(The correction tools and blur tools in Photoshop can be used to modify people's faces in photos and make beauty effects.