How to use and process online pictures in newspapers?

With the popularity of the Internet, a large number of online photos have emerged. Newspaper editors need to use some online pictures in order to meet the needs of the layout. In addition to copyright and other reasons, online pictures cannot be used casually. The main problem is that the accuracy of the online pictures is not enough. After the newspapers are printed out, they will find that the pictures are not clear, or even appear to be mosaics. How to properly select and handle online pictures so that they can be printed in newspapers will not be too bad. Here I provide some ideas for your reference.

First, the picture of online pictures

There are various pictures on the Internet, such as Hanhai, but not every photo can be used. When choosing online photos, pay attention to:

1, try to choose some contrast, contrast photo

Due to the limitation of printing conditions, newspapers generally have a relatively coarse mesh, and they need to lose some levels when they are online. The online pictures are usually too small and the level performance is poor. Therefore, if the level of photos is too rich, printing cannot be performed. For example, some sunset afterglow photos are very rich in levels and are beautiful on the monitor. After the printing, they will find that the photographs are not beautiful because of the appearance of faults; while some photos with large contrasts and large contrasts do not have strong sense of hierarchy, and they do not matter. Faults.

2, online character photos in the use of some panoramic or medium-sized photos to choose, use less close-up

　　 Most people look at the picture is very sensitive to the face of people in the photo, so people face close-up photos of the level of clear requirements. If the photo. If you are too young to express it, you will find that the face color of the person is a piece of paper after printing. It is easy for the reader to feel that the quality of the picture is not good enough. In some panoramic or middle-view photos, the characters' faces are very small, focusing on the movements of the characters, so that the reader ignores some details, and the photos can be sloppy.

3, use less or not online charts

The performance content of the chart is more intuitive, and the editor likes to use it, but the quality of the text in the chart is very poor after being expressed in the image format. Basically, it will appear jagged and the reader will not see the content clearly. If you must use a chart, it is recommended that the editor ask the photo-processing staff to remove the text and re-plant the text block in the image.

Second, the size of the online picture

Unlike online photography and photojournalists, the biggest difference is the size of the picture. The size of the online picture can be said to determine the quality of the printed picture.

In general, the image file size is proportional to the size of the image layout in the newspaper. Because of the speed and other issues, the online pictures are mostly JPG format, the file size is usually only tens of K or even a dozen K, K; but now also used digital camera works saved in JPG format, 3 million pixels, medium-precision photography, The file size also has hundreds of K. After many attempts, if an online picture is to be applied in a newspaper, generally, the photo file is required to be larger than 20K, and the size of the photo in the newspaper is within 6×10cm; in other words, the online picture is on the page. When using the size of the original size (refer to the resolution to 200, such as i), to enlarge it should not exceed 120%, such a size size does not appear in the print when the picture quality is poor.

Third, the processing of online pictures

The processing methods of online pictures and photojournalists' works are basically the same, but the degree of selection is not the same, and the requirements for photo adjustment are higher. The processing of some details can often determine the final print quality.

1, save the picture in TIFF or EPS format

Most of the pictures on the Internet are in JPG format. JPG images occupy less system resources and are faster. It is not necessary for newspapers to have such low-accurate print applications. But JPG is the image preservation format of the lossy compression algorithm. Each time the image is saved, some data will be lost. This is a disaster for the online image with little picture information, and this is not the case in TIFF or EPS format, so we Ask the picture processing personnel to be accustomed to using TIFF or EPS format when saving the picture, and can reprocess the picture several times.

2. Process pictures with RGB mode Save pictures with CMYK mode

The RGB mode is the color mode adopted by all devices based on the principle of optics. Its color range is much larger than that of the CMYK mode. Therefore, when the picture is processed in the RGB mode, a wider color space will be obtained during the entire editing process. And more subtle editing effects. The picture used to print the film must be in the CMYK mode, so the picture mode must be converted before the film is released. It should be noted that some picture color changes occur when the picture mode is converted. The picture of CMYK mode is not as bright as the picture of RGB mode. After the conversion, the picture should be observed first, and after confirming that there is no color cast, it can be output. If you think that you are not satisfied, you should immediately cancel the conversion of the color mode, and never convert it back to RGB color mode again, resulting in irreversible color loss.

3, the sharpness of the image clarity adjustment

The sharpness emphasizes (sharpness) is not enough, the outline is not clear, the picture is blurred: the sharpness emphasizes too much, the outline of the picture is stiff. The control of the sharpness directly affects the picture quality. Online pictures usually have low precision, low levels, and are easily blurred. Therefore, sharpening is by no means a process that can be done, but is an essential part of online picture prepress processing, and is the most effective means of improving image clarity. For different types of pictures, it is necessary to find the right level of sharpening in practice. From the display screen effects, the sharpness of people's pictures is usually a little too good for some landscape pictures.

4, the level of online image and color adjustment

The purpose of grading adjustment is to meet the printing requirements first, and the main levels should be concentrated in the middle area, that is, 20% to 60% of visually sensitive areas. Second, according to the manuscript content and level distribution, it is important to ensure the accuracy of key positions, such as clothes, Faces, etc.; again: To adjust the value of extreme highlights or shades, not a large area of ​​network, generally controlled at about 2% to 95%. The color adjustment of online pictures is mainly to keep in mind the 3%~5% grayscale of newsprint, and to adjust some of the dim pictures to be brighter.

5. Appropriate use of Intellihance filters in photoshop

Photoshop is an international professional image processing software. It has already been widely used in China. Its inteliihance filter uses the interpolation method to enlarge and compensate the image. It can increase the resolution and size of a small image. It can be used properly for actual needs. However, the Intellihance filter is not likely to increase the level and color of the picture. It is only to make the picture processing personnel more convenient and cannot place their hopes on it. There are also some specialized image magnify compensation software such as S-spline, which have similar functions.

A lot of information about newspaper pictures has been cautioned against using less or less online pictures. We can often use them in practical work. With proper selection and careful handling, we can also make online pictures work in newspapers.