doc转换jpeg
在线计算网 · 收录于 2022-08-08 12:16:43
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文件扩展名.doc
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文件类别documents
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程序Microsoft WordOpenOffice.org WriterIBM Lotus SymphonyApple PagesAbiWord
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主程序Microsoft Word
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说明DOC是一种特殊扩展名，对应于文本编辑器Microsoft World中创建的文档，直到2007版本。此格式存储有关文本文档格式的信息 - 段落，列表，缩进，对齐等等。 DOC文件不仅可以包括文本信息，还可以包含大量图像，图形，脚本，图表。
DOC是二进制文件格式的扩展，它以信息块开头，该信息块充当整个数据文件集合的关键元素。这样的二进制文件包括关于文本文档的格式化的相当大量的信息。
传统的扩展已广泛用于在各种操作系统中创建文本格式文档。这种格式的文件由任何人打开，包括Word编辑器的现代版本或其免费软件包中的类似物，如Open Office，Libre Office或Corel WordPerfect等实用程序。
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技术细节DOC文件格式的第一个版本优先考虑格式化文本的内容，但随着时间的推移，添加了大量内置对象，其中包括图表和图形，以及各种媒体文件（声音，视频）。 具有DOC扩展名的文件能够包含有关合并的数据，因此文字处理模板可以与表或数据库一起使用。
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MIME类型application/mswordapplication/kswps
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文件扩展名.jpeg
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文件类别images
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程序Adobe PhotoshopApple PreviewCorel Paint Shop Pro
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主程序MS Paint
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说明JPEG – is a popular graphic format, which is characterized by a high degree of compression, which leads to a decrease in image quality. It uses the technology of encoding of smooth color renditions, providing the ability to reduce the amount of data frequently during the recording of the image.
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 JPEG 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, since a strong contrast between a number of closely located pixels provokes the appearance of visible artifacts.
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技术细节The procedure for compressing the digital images in JPEG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, 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.
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MIME类型image/jpeg
