cr2转换jpeg
在线计算网 · 收录于 2022-08-08 11:22:03
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文件扩展名.cr2
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文件类别images
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程序Adobe PhotoshopAdobe Photoshop LightroomPaint Shop ProPicasadigiKam
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说明佳能RAW（.CR2）的版本2是一种格式，允许用户的图像文件保存为RAW格式。保存后的文件不具有直接访问显示，如以JPG或PNG的情况。这种格式的主要特点是让所有相机传感器获取信息的能力，所以它是非常容易进行图像的编辑。最重要的特点是，它甚至已经编辑，特别困难的，当涉及到质量JPEG格式后无质量损失。
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技术细节RAW图像处理为CR2的建立是发展通过内部色彩空间范围内的RAW转换器的图像把它变成一个格式，便于保存，打印，共享或下载之前。支撑件12或14位颜色和用途的无损压缩。该CR2格式类似于CRW格式。此外，CR2格式是建立在TIFF格式。
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MIME类型image/cr2
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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
