First, blurred pictures become clear
Each of us probably had such an experience. When I was shooting, I couldn't grasp the timing due to hand-shake, the shooting target's movement, or the timing of rushing to shoot. The photographs were blurred, wasted, and regrettable. However, you don't need to worry. You can use Photoshop as a powerful tool to make blurred images clearer.
method one
1. In this example, the camera shakes the picture as a whole is blurred. Open the original image in Photoshop CS (Figure 1) and copy the background layer in the Layers panel by dragging the background layer to the "New" button in the Layers panel.
This uses a high-contrast retention filter, located in the "Filter/Other" category. Although the location is inconspicuous, its function is very powerful. The role of the high-contrast retention filter is to preserve edge detail at a specified radius where strong color transitions occur, and not to show the rest of the image (the 0.1 pixel radius preserves only edge pixels). This filter removes low frequency details from the image, as opposed to the Gaussian Blur filter. It is helpful to apply the High Contrast filter to a continuous-tone image before using the Threshold command or converting the image to bitmap mode. This filter is very useful for removing line art and large black and white areas from scanned images. Simply put, this filter will enhance the pixel edge of the defined value. If the parameter value reaches a certain level, it will change some intermediate level pixels to about 50% gray pixels, and improve the image by sacrificing partial details. Sharpness.
2. Select the background copy layer and use the high-contrast retention filter. We can see that the effect is shown in Figure 2. The photo seems to be grayed out. At this time, we changed the blending mode of the layer copy of the execution filter from "normal" to "light". A miracle appeared and the picture suddenly became clear (Figure 3). The feature of the "light" mode is that this blend mode ignores all 50% of the gray pixels, so the gray pixels produced by the high-contrast retention filter magically disappear and increase the contrast of the layer pixels.
3. If you think it is not clear enough, you can use the "USM sharpening" or sharpening edge filters in the sharpening filter directory. The final result is shown in Figure 4.
Method Two
1. The first step is the same as the first step of method one.
2. Select the background copy layer and execute the "Image/Adjust/Decolor" command (shortcut key Ctrl+Shift+U) to make it a black and white image.
3. Continue to operate on this layer and set the layer blending mode to "Glory" or "Overlay". We can see that the photos have become clear, but the colors have changed, as shown in Figure 5.
4. Use the high-contrast filter to preview the edge while adjusting the radius value. It does not matter if the value is larger, until a satisfactory result is achieved (see Figure 6). If you are not satisfied with the color, you can add other color adjustment layers on it by selecting “Layers/New Adjustment Layer, Levels†and adding a tone level adjustment layer or a curve adjustment layer.
It should be noted that the above two methods are effective only for those photos that are not too vague. If the photos are too vague, there is not a good way to use them. You need to use the brush tools in the PS to draw a single stroke.
Second, adjust the color cast
Due to the shooting or flushing, some photos will color and affect the visual effect. In my long-term work practice, I have developed several simple and practical methods. These methods have their own advantages: The first is to add new adjustment layers such as color balance or color gamut to correct the flexibility of this method. The largest, but more cumbersome to operate, the operator needs to have some experience. The second is the use of "image / adjustment / automatic color" command (shortcut key Ctrl + Shift + B), this method has the advantage of being simple and quick, but sometimes the effect is not satisfactory. The third method is to change the gray cast color, this method has the advantages of the first two, both a certain degree of flexibility, operation and intuitive, you can directly see the final effect. Here is a detailed introduction of the third method, and the other two can be tested on their own.
1. Open the sample image (Figure 7). The face and the wall in this picture are somewhat green. The wall behind is originally white, and the RGB value of the white color should be R=G=B.
2. Using the “Image/Adjustment/Curve†command (shortcut key Ctrl+M), click on the middle of the three straws in the bottom right corner to set the ash field pipette (Figure 8). Use this pipette to click anywhere in the image and the overall color of the image will automatically adjust. The reason for this is that after determining the image ash field with an ash pipette, the white field and the black field will change accordingly. Early users can experiment with different positions and feel the changes in the image.
3. In addition to using the curve command, you can also use the “Image/Adjustment/Levels†command (shortcut Ctrl+L). The settings in the Levels field are the same as those in the curve. The operation is the same as above. It should be noted that if the color picked up by the pipette is wrong, the image will still be color cast. The difference is that this time it will be biased towards the contrasting color of the absorbed color. The final corrected image is shown in Figure 9.
Third, effectively remove the watermark
In the process of learning Photoshop, you often have to practice repeatedly, often using a lot of material. Many of the materials downloaded from the Internet carry watermarks, which brings some problems to our study. Here is a simple method to remove the watermark, which can be used in learning, but remind everyone not to use it for commercial activities, so as to avoid unnecessary trouble.
1. First open the sample image (Figure 10) and press the shortcut key Ctrl+' to display the mesh. It can be seen that the entire image is covered by the watermark of the website, but careful observation can be found that the distribution of the watermark is very regular. The idea of ​​removing the watermark is to copy a relatively simple watermark, change its layer blending mode, and then mix it with the bottom layer to achieve the purpose of removal.
2. There are some white masters (ie, simple watermarks, no Fuwa section) in the picture. The watermarks are isolated on these masters (as in the upper left corner) and one such watermark needs to be copied. Method: Use the rectangular box tool to select the appropriate size of a piece, must contain a complete watermark (Figure 11), copy and paste into a new layer. In this example, in order to make everyone see more clearly, one piece of the upper left corner was specially copied and moved to the central position (see Figure 12).
3. Select the watermark layer in the Layers panel and set the layer blending mode to Color Dodge. The key step is to invert it. The shortcut is Ctrl+I. After reversed phase, the watermark in the watermark layer seems to be missing. In fact, it is only because the layer blending mode changes to become white, it is not easy to be discovered, but it will appear when you move it. It can also be displayed in the watermark layer. Observe its position clearly (note the inside of the black box in Figure 13).
4. Using the Move tool, move the white watermark in the Layers panel above the gray watermark, carefully adjust the position, zoom in with the zoom tool if necessary, or fine-tune it with the keyboard. When the two are completely coincident, the underlying gray watermark is removed (Figure 14).
5. The watermark of the entire image is very large, if one by one to operate, very inconvenient, you can use a more convenient method. Hold down the Alt key, copy the watermark layer, and then move the copy of the layer to the position where the second watermark is adjacent. Use the keyboard's arrow keys to fine-tune the position when making fine adjustments. After the second watermark is removed, link the watermark layer and the copy of the watermark layer, and then merge the linked layers. Remember to change the merged watermark layer blending mode to “color dodgeâ€. And so on, hold down the Alt key, copy the merged watermark layer, remove the other two watermarks at once, and then copy and link again and merge to remove 4 watermarks at once. In this way, 1 becomes 2 and 2 becomes 4 - soon the watermark of the entire image is gone. The final result is shown in Figure 15. Compared with Figure 10, is there a sense of accomplishment?
Source: Ke Yin Network