Microsoft renamed HD Photo to JPEG XR
Standard HD Photo was formerly known as Windows Media Photo. Now Microsoft has renamed it JPEG XR to make it easier to push the new format as an international standard through the Joint Photographic Expert Group (JPEG).
Meanwhile, between the new graphic formats HD Photo and DNG (developer - Adobe) began the redistribution of spheres of influence . Both companies have developed a new generation of graphic formats, and now they are trying to promote them so as not to harm each other. As a result, it may turn out that HD Photo will replace the standard JPEG, and the DNG format will replace the RAW formats of digital cameras, but still digital cameras will support several standards at the same time as now.
The need to introduce a new format is obvious, because the old JPEG was developed in the past era, when no one could assume that digital cameras would appear and the information from the sensor would need to be correctly processed. As is known, the JPEG format completely ignores the physical parameters of the sensor and does not save any data from it, and “tightly” re-saves the information in another color coordinate system, that is, irreversibly cripples it. Therefore, owners of digital fortoapps have to use proprietary RAW-formats in order to keep the data from the sensor unchanged. In this case, the photographer may at any time change the shutter speed and aperture on the already taken photo, and then, if desired, return it to its original state.
The new standard Adobe Digital Negative (DNG) should solve the problem of mixed RAW-formats. JPEG XR format is positioned differently. It should be a simple "upgrade" of the JPEG format, simply expanding its capabilities.
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The JPEG XR format has one objective advantage over DNG: this is greater color depth. Regular old JPEG saves 8 bits per pixel for each color channel, most digital camera processors process 12 bits / pixel, professional 1L Mark III cameras use 14 bits / pixel, and more professional wide cameras use 16 bits / pixel. So, the JPEG XR format is capable of storing not only 16, but 32 bits per pixel, which gives more than 4 billion color shades in each channel.
On the other hand, the DNG format also has its trump card: it is the preservation of information in uncompressed form. In this sense, DNG is closer to RAW formats than JPEG XR. Apparently, Microsoft and Adobe will not infringe upon the interests of each other and are going to promote their standards in parallel, although the conflict is also not excluded.
The support for JPEG XR has already been announced by the manufacturer of high-quality digital cameras Hasselblad, the manufacturer of innovative sensors Foveon, as well as the developers of ARM chips and Novatek Microelectronics.
Meanwhile, between the new graphic formats HD Photo and DNG (developer - Adobe) began the redistribution of spheres of influence . Both companies have developed a new generation of graphic formats, and now they are trying to promote them so as not to harm each other. As a result, it may turn out that HD Photo will replace the standard JPEG, and the DNG format will replace the RAW formats of digital cameras, but still digital cameras will support several standards at the same time as now.
The need to introduce a new format is obvious, because the old JPEG was developed in the past era, when no one could assume that digital cameras would appear and the information from the sensor would need to be correctly processed. As is known, the JPEG format completely ignores the physical parameters of the sensor and does not save any data from it, and “tightly” re-saves the information in another color coordinate system, that is, irreversibly cripples it. Therefore, owners of digital fortoapps have to use proprietary RAW-formats in order to keep the data from the sensor unchanged. In this case, the photographer may at any time change the shutter speed and aperture on the already taken photo, and then, if desired, return it to its original state.
The new standard Adobe Digital Negative (DNG) should solve the problem of mixed RAW-formats. JPEG XR format is positioned differently. It should be a simple "upgrade" of the JPEG format, simply expanding its capabilities.
')
The JPEG XR format has one objective advantage over DNG: this is greater color depth. Regular old JPEG saves 8 bits per pixel for each color channel, most digital camera processors process 12 bits / pixel, professional 1L Mark III cameras use 14 bits / pixel, and more professional wide cameras use 16 bits / pixel. So, the JPEG XR format is capable of storing not only 16, but 32 bits per pixel, which gives more than 4 billion color shades in each channel.
On the other hand, the DNG format also has its trump card: it is the preservation of information in uncompressed form. In this sense, DNG is closer to RAW formats than JPEG XR. Apparently, Microsoft and Adobe will not infringe upon the interests of each other and are going to promote their standards in parallel, although the conflict is also not excluded.
The support for JPEG XR has already been announced by the manufacturer of high-quality digital cameras Hasselblad, the manufacturer of innovative sensors Foveon, as well as the developers of ARM chips and Novatek Microelectronics.
Source: https://habr.com/ru/post/12793/
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