dds转换jpeg
在线计算网 · 收录于 2022-08-08 12:07:22
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文件扩展名.dds
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文件类别images
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主程序Adobe Photoshop
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说明开发环境中使用OpenGL和的Microsoft DirectX这种格式;这是用来保存环境和用户界面图案的位图图像。在这里，您可以节省压缩或解压缩数据。它主要用于应用程序和3D游戏的发展。目前，基于DDS的格式创建的控制台。这种格式能够在运行应用程序压缩纹理“盒子上飞”，这引起改进的性能。
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技术细节在DDS格式是用DirectX7.0和DirectX8.0一起发布。虽然我有同系列的DirectX的一个老的连接，它必须与ARB扩展整理GLSL（OpenGL着色语言）也使用的能力。直接3D 10通过增加额外的支持，需要进行格式的Direct3D 10.x和11的外观曲线上升的DDS文件的能力。
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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
