heic转换jpeg
在线计算网 · 收录于 2022-08-08 12:09:02
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文件扩展名.heic
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文件类别images
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说明高效率的文件格式（HEIC）由编解码器HEVC（高效视频压缩）编码。它通常用于HEIF图像格式使用苹果;它包含图像序列，是现场照片。最好的部分是节省的存储。它可以提高存储两倍比JPEG图像，同样的商店，你会发现下一代文件的压缩。
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技术细节该HEIC也是由MPEG开发的HEVC编码的有损压缩格式。两者有透明度和可存储各种图像。不像JPG文件，它允许8位色彩，HEIC文件可以处理16位色。此文件类型也不是没有兼容性问题。然而，今天，第三方应用程序和计算机程序有麻烦解释HEIC文件。在IOS用户可以停止存储图像作为HEIC通过改变设置而形成。
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MIME类型image/heicimage/heic-sequence
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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
