Selecting Image File Format: Improving Image Processing Quality (Part 2)

Five, TIFF format

Tag Image File Format (TIFF) is a widely used image format on Mac. It was jointly developed by Aldus and Microsoft and was originally designed for the need of cross-platform storage of scanned images. It is characterized by a complex image format and a lot of storage information. It is because it stores a lot of information on the subtle level of the image, and the quality of the image is also improved, so it is very favorable for copying the original.

This format has two forms of compression and non-compression, in which the compression can be stored using the LZW lossless compression scheme. However, due to the complex structure and poor compatibility of the TIFF format, sometimes your software may not be able to correctly identify TIFF files (most of the software has now solved this problem). Transplanting TIFF files on Macs and PCs is also very convenient, and TIFF is now one of the most widely used image file formats on microcomputers.

Six, PSD format

This is the famous Adobe Photoshop image processing software Photoshop document (PSD). PSD is actually a "draft drawing" of Photoshop's graphic design. It contains a variety of design samples for various layers, channels, masks, etc., so that the next time you open the file, you can modify the previous design. Among the various image formats supported by Photoshop, the PSD has a much faster access speed than other formats and is very powerful. As Photoshop is more and more widely used, we have reason to believe that this format will gradually become popular.

Seven, PNG format

PNG (Portable Network Graphics) is an emerging network image format. At the end of 1994, as Unysis announced that GIF had a patented compression method, the author of the GIF software was required to pay a certain fee, which led to the birth of a free png image format. PNG started with the combination of GIF and JPG and plans to replace both formats in one fell swoop. On October 1st, 1996, PNG submitted to the International Networking Union and received the recommended accreditation standard. Most of the drawing software and browsers began to support PNG image browsing. Since then, the PNG image format has been rejuvenated.

PNG is currently the most undistorted format. It captures the advantages of both GIF and JPG. It has a rich storage format and combines the color modes of GIF and JPG. Another feature of PNG is that it can compress image files to the limit to facilitate the network. Transmission, but can retain all the information related to image quality, because PNG is the use of lossless compression to reduce the size of the file, which is at the expense of image quality in exchange for a high compression rate of JPG is different; its third feature The display speed is very fast. You can display low-resolution preview images by downloading only 1/64 image information. Fourth, PNG also supports the production of transparent images. Transparent images are very useful when creating web page images. We can The background of the image is set to be transparent, and the color of the page itself is used instead of the color set to be transparent, so that the image and the background of the web page can be harmoniously blended together.

The disadvantage of PNG is that it does not support animation application effects. If it can be strengthened in this respect, it can simply replace GIF and JPEG. The default format of Macromedia's Fireworks software is PNG. Now, more and more software has started to support this format, and it has become increasingly popular on the Internet.

Eight, SWF format

With Flash, we can create an animation with the suffix SWF (Shockwave Format). This format of animated images can represent a rich multimedia form with a relatively small volume. In the aspect of image transmission, it is not necessary to wait until all the files are downloaded to be viewed, but can be viewed while downloading. Therefore, it is particularly suitable for network transmission, and especially in the case of poor transmission rates, good results can be obtained. Facts have also proved this point, SWF has now been widely used in web pages for multimedia presentations and interactive design. In addition, the SWF animation is made with vector technology, so no matter how many times the picture is zoomed in, the picture will not suffer any damage. In summary, SWF format works have attracted more and more web designers because of their high-definition picture quality and compact size, and they have increasingly become the mainstream of web page animation and web page image design and production. Currently, they have become online. Animated fact standard.

Nine, SVG format

SVG can be regarded as the most fiery image file format at present. Its English name is called Scalable Vector Graphics, which means scalable vector graphics. It is based on XML (Extensible Markup Language) and was developed by the World Wide Web Consortium (W3C) Alliance. Strictly speaking, it should be an open standard vector graphics language that allows you to design exciting, high-resolution Web graphics pages. The user can directly use the code to draw the image. You can use any word processing tool to open the SVG image, change the part of the code to make the image have interactive features, and can be inserted into the HTML at any time through the browser to watch.

It provides the current network popular formats GIF and JPEG can not have the advantage: You can arbitrarily enlarge the graphics display, but it will not be at the expense of image quality; the words remain editable and searchable in the SVG image; on average, SVG files are much smaller than JPEG and GIF files, and downloads are fast. It is believed that the development of SVG will provide a new image standard for the Web.

Other non-mainstream image formats:

1, PCX format

The PCX format is a format that ZSOFT developed when developing the image processing software Paintbrush, which is a compressed format that occupies less disk space. This format is still popular because it takes a long time and has the ability to be compressed and full-color.

2, DXF format

DXF (Autodesk Drawing Exchange Format) is a vector file format in AutoCAD. It stores files in ASCII code and is very accurate in representing the size of graphics. Many software support DXF format input and output.

3, WMF format

WMF (Windows Metafile Format) is a common metafile format in Windows and is a vector file format. It has the characteristics of short documents and patterning. The entire graphic is often formed by splicing the individual components. The graphics are often rough.

4, EMF format

EMF (Enhanced metafile) is a Windows 32-bit extended metafile format developed by Microsoft to compensate for the insufficiency of using WMF. It is also a vector file format. Its purpose is to make metafiles more acceptable.

5, LIC (FLI/FLC) format

The Flic format was developed by Autodesk Corporation. FLIC is a general term for FLC and FLI: FLI is the original 320×200 resolution based animation file format, and FLC uses more efficient data compression technology, so it has higher performance than FLI. The compression ratio also has a lot of improvement in resolution.

6, EPS format

EPS (Encapsulated Postscript) is a format rarely seen by PC users, while Apple Mac users are used more often. It is an ASCII file format described by Postscript language. It is mainly used for output jobs such as typesetting and printing.

7, TGA format

The TGA (Tagged Graphics) file is an image file format developed by Truevision of the United States for its display card, which has been accepted by the graphics and image industries in the world. The structure of TGA is relatively simple, which belongs to a common format of graphics and image data. It has a great influence in the multimedia field and is a preferred format for converting computer-generated images to television.