cdr转换jpeg
在线计算网 · 收录于 2022-08-08 12:08:43
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文件扩展名.cdr
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文件类别images
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程序Adobe ReaderCorel PaintShop Photo ProCorel WordPerfect OfficeLibreOffice
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主程序Adobe Illustrator
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说明Corel公司开发的CDR文件格式，它的主要用途是矢量图形图像和图纸的创建。大部分的编辑程序的支持CDR文件格式。这是去为CorelDRAW中的应用。米歇尔·博伦和帕特贝尔尼进行开发，可以与现有的台式机上其出版系统捆绑在一起基于向量的图形程序聘请工作。
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技术细节目前还缺乏有关CDR文件格式的技术规范。在1989年发射后Corel公司进一步发展其投入的资源。 CorelDRAW中应用的最新版本还提供了文本的基本支持，同时也支持色彩管理和专色。
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MIME类型application/cdrapplication/x-cdrimage/cdrimage/x-cdr
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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
