WMF to JPG converter

.wmf

Microsoft Windows Photo Viewer

WMF format is a positional graphics domiciled with Windows; it aids the direct display of an image on the screen of a device, in a particular way. Though a graphical format, the WMF is not limited to use in image files. Any object – text, image, video all require a code for pixel displacement to enjoy accurate rendering, made possible by WMF in early PCs. WMF format also assists with holding copied information, and subsequent pasting in another document or environment. Though initially designed as a format that saves documents in 16-bit fragments, WMF equally supports 24-bit RGB-color palette and is used for exporting graphics from one application to the other.

Microsoft released the first version of the WMF file type in 1988, as a part of Windows 3.0. However, with the 3.1 updates of Windows in 1992, significant upgrades were made to the format. The latest update to Windows MetaFile was released to the public in 2006. To date, the WMF file format still enjoys relevance in Microsoft Office packages like Word and PowerPoint. Since JPG and GIF have stolen the show among image file formats, WMF's popularity has waned, though it is still compatible with several computer programs. Graphical Device Interface is a series of commands that make a real-time drawing made possible by the WMF, which holds some code before displaying the image on the screen.

Microsoft

.jpg

JPG – is a popular graphic format characterized by a high image compression rate, which leads to a decrease in image quality. It uses the technology of encoding smooth color renditions, providing the ability to frequently reduce the amount of data during the image's recording. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively. It is also frequently used in memory cards of digital video cameras. The JPG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present. It is not recommended to use this format for compression of drawings and various kinds of graphics. A strong contrast between several near located pixels provokes the appearance of visible artifacts.

The procedure for compressing the digital images in JPG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, and then it is divided into squares to determine the upper range of the color spectrum. Finally, the colors and brightness are coded. JPEG uses a "lossy" compression system and discrete cosine transform technology. The format acts simultaneously as the standard of ISO and the International Telecommunication Union. The file compression ratio is in the range from 10:1 to 100:1. In this case, the reduction in image quality can vary from insignificant to substantial.

The JPEG Committee