jpeg转换ai
在线计算网 · 收录于 2022-08-08 11:41:04
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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
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文件扩展名.ai
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文件类别images
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程序Adobe AcrobatAdobe PhotoshopACD Systems CanvasCorelDRAWXnViewGhostscriptInkscapesK1GIMP
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主程序Adobe Illustrator CS
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说明以这种格式存储的图像缺乏网格的像素，Adobe Illustrator应用程序的创建。它是由连接点线组成。创建徽标图像时的格式在SMI使用和。在图像尺寸增大的情况下，它并没有质量损失，由于缺乏光栅图像数据。 AI是由一个首部，字符串识别和图形元素。图形图像以EPS格式呈现。
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技术细节AI文件以前被称作PGF和酷似PDF文件格式。 PGF文件成了PDF副本被嵌入到一个保存的PDF文件兼容。同样，这个双通道系统适用于Adobe Illustrator中的当前版本创建并保存到EPS兼容的文件时。这些文件没有网格像素保存的图像形式。图像的扩大不会导致失去的图像质量。
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MIME类型application/postscript
