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Example research essay topic: Williams P File Format - 1,108 words

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You are probably asking yourself, Why should I care about graphics file formats? Well, the average end-user (non-programmers) is only concerned with the storage of their graphics information by using a format that majority of graphics applications and filters can read. End-users are not normally concerned with the internal composition of the data within the graphics file itself. Graphic file formats can be divided into two general classes: vector and bitmap. Vector files contain data described as mathematical equations and are typically used to store line art and CAD information. There are two major drawbacks to using vector files.

One drawback is that vector files are not suitable for reproducing paintings or photographs. The second disadvantage is that complex images take a long time to display because on most display systems, each vector image has to be converted to a pixel image by a process called rasterizing (Cohen and Williams p. 109). The advantages of using vector images include easy editing to the image, the amount of memory used to store the image, and the display independence. On the other hand bitmap file formats (also called raster files) contain graphics information known as pixels, such as photographic images. Pixels are the pictures element, (Cohen and Williams p. 89) or dots on the monitor screen.

There are two disadvantages to using bitmap formats. First, it requires a large amount of data to store each image. Second, bitmap images are size dependent and are not suitable for extensive editing. Changing the size of bitmap images can create major problems.

Reducing them requires throwing away information; enlarging them produces blocking effects. The major advantages of using a bitmap formats includes good image quality and the quick display speed. There are hundreds of different graphic file formats, many are similar to each other but are made to only interact with a certain computer application. Other file formats are universal and are able to correlate with many different applications or even all of them.

Some file formats can be compressed so the image stored does not use a lot of memory; others are only concerned with the quality of the picture. No one, file format is defined as the best in the majority of computer graphic applications. Graphic file formats are responsible for performing various tasks such as acting as translation devices, (Cohen and Williams p. 105) printing, and web graphics. Each format contributes different qualities to performing these tasks. Translation devices (Cohen and Williams p. 105) are file formats, which are able to store and transfer an image to another computer or another program or become downloaded from the web. The goal of the transfer devices is to transfer these images without losing any of the image data and performing the transfers as quickly as possible.

Some file formats were created so files can be easily transferred between Windows and Macintosh computers. Examples of file formats that are translation devices (Cohen and Williams p. 105) are WMF, PDF, TIFF and GIF. The WMF file format or Windows Metafile (Cohen and Williams p. 113) is vector format, which was developed mainly for the use of Windows, but has been enhanced to be used in many other computer applications as well. This format also can be imported into Macintosh as well. A PDF or Portable Document Format (Cohen and Williams p. 115) has several advantages to it use. These advantages include its compatibility with any computer and the compression of the format allows it to be sent over Internet with ease.

A TIFF or Tagged Image File Format, (Cohen and Williams p. 108) is the best format to use to transfer an image between Windows and Macintosh computers (Cohen and Williams p. 108). A GIF or Graphical Interface Format (Many p. 171) is another compressed format that has the ability to be displayed on any computer. Each of these file formats has their share of drawbacks as well. When exported from its original program the WMF image can change colors, patterns and shapes.

The PDF format is fairly new so it is often is not available unless the program used is up to date. A TIFF file format is only useful if you intend print the image that is transferred. On the other hand a GIF format is only useful to transfer images if its intended use is for the web. The idea behind graphic file formats produced for printing is to be capable of handling right the resolution for graphics so the graphic can print smoothly. Some formats handle high-resolution, which is more suitable for commercial printing. Others were developed strictly for the lower resolution printing of office printers.

There are hundreds of formats specified for the use of printing as well. The most popular formats of choose would be TIFF formats and EPS formats. Other popular formats are DCS, PICT and PS. The majority of file formats can be used to print an image, however choosing the wrong format can result in distorted and blurry pictures. The reason a TIFF format is one of the most popular formats to use is because it is a raster format that is extremely flexible. This format is capable of handling any resolution as well as any bit depth.

An EPS or Encapsulated PostScript (Cohen and Williams p. 110) is vector format, but can be raster ized (Cohen and Williams p. 109). This format allows the images to be edited with ease and prints the image based on the resolution of the printer. A DCS or Desktop Color Separation (Cohen and Williams p. 111) is a variation of an EPS. It stores images in five different parts. One part is for previewing and the other parts contain printing information. The PICT file format (PICT is short for picture) was created by Apple for images on the first Macintosh systems.

This format can be either vector or bitmap. PICT formats are useful when printing to non-PostScript printers, or ink-jet printers. A PS or PostScript (Cohen and Williams p. 116) is based on the same principles of an EPS except that EPS formats was created to be embedded (worst internet) in another file. Another difference is that a PS format can hold up to a whole books worth of information while an EPS on the other hand cannot be more than one page. There are disadvantages to these formats as well. For the TIFF format it is that amount editing is limited because the format is bitmap.

For the EPS format as stated above the amount information stored is limited and also when placed certain programs a gray rectangle will appear in place of the graphic. A PICT...


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Research essay sample on Williams P File Format

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