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HDR technology is not only used in mobile phones, many LCD TVS also start to be equipped with HDR technology, whether it is thousands of yuan of TV or tens of thousands of yuan of TV have HDR. But do you know about HDR?
If you're taking a photo with your iPhone, you'll find that there's an HDR option in the photo taking feature, and if you select this feature, you'll get a much better shot than if you don't, especially if you're jumping or running. Now, HDR technology is not only used in mobile phones, many LCD TVS are also equipped with HDR technology.
What is HDR?
HDR is short for high-dynamic Range, which means "High Dynamic light rendering". Compared with ordinary images, it can provide more dynamic range and image details, greatly improve the light and shade contrast of the screen details, and better reflect the visual effect in the real environment. In simple terms, it is to take several photos with different exposures at a time, and then automatically combine the best photo with highlights and dark details according to the algorithm.
The term HDR was first mentioned in the field of photography, and with the development of science and technology, HDR technology has increasingly appeared on the display equipment. In the world of photography and in the world of display, the concepts are not particularly the same. In television, HDR does not take several pictures at once, as it does in photographs. HDR TV needs to have a higher brightness of the panel, also need to support the TV chip, more need the corresponding film and television resources. These three elements together, can bring a good picture quality effect.
In terms of TV display, the HDR function is mainly aimed at improving the picture width, brightness and dark field performance. And the improvement is so intuitive that it can be seen with the naked eye, not by video geeks but by ordinary viewers.
HDR technology allows TV viewers to experience two features. One is that the picture is "brighter", with clear details in both highlights and shadows, creating an effect in which highlights are not exposed and shadows are not. Make the light bright, while the dark also retains more details, the visual experience is better; On the other hand, more extensive color, HDR TV and HDR video content are based on 10 or 12 bit bt.2020 color space to establish a standard, is the traditional BT. The 709 color space is 60 times, and the color has reached more than 1 billion, which plays a key role in enhancing the color hierarchy and transition of the entire image.
Currently, there are two main HDR formats on the market, one is Dolby Vision, and the other is HDR 10. Dolby horizon implementation is a systematic project, after the video shooting needs by editing, color correction, coding, such as application form an enhanced layer, compared with traditional TV, it can bring color gamut range wider dolby horizon color space, if it is not support dolby horizon of traditional television, enhancement layer won't work, TV or display the traditional signal.
HDR 10 can be understood as the simplified version of Dolby Vision. Its hardware and coding technology are weaker than that of Dolby Vision. HDR TV that supports Dolby Vision can be compatible with HDR 10 downward, but not vice versa.
In the current form of technology, users want to get a better HDR hardware architecture, so they choose LG, sharp, skywalker, samsung, TCL, Letv super TVS which support Dolby Vision technology. These high-end HDR TVS are relatively more reliable. If the HDR10 standard is selected, any current TV that claims to be able to decode HDR movies can be used.
Is HDR necessary
From the perspective of user experience, HDR technology can extend the contrast between the bright and dark areas of the image, so as to present more influencing details and better reflect the visual effect of the real environment. Nowadays, HDR TV has been valued and supported by various TV manufacturers, and there will be more and more products on the market. However, the picture effect of HDR TV is uneven even before the industry standard is perfected.
If you don't have an HDR source, your HDR TV won't be as beautiful as the TV manufacturer says it will be. It has been tested by relevant media and found that without the HDR film source, the difference between the HDR TV bought at a high price and the ordinary TV is not big. In general, the HDR TV backlight system is superior to the SDR products, in the SDR sources, however, higher specifications of the backlight system does not give full play to the function (rub highlights or shadows information in addition to the original information), so there is no HDR sources, we will just put the HDR television as a high-end in ordinary TV to see, nothing special.
I think for ordinary consumers, the mainstream standard on the market is of course the less the better, in this way, when the purchase will be less trouble. However, as far as HDR technology is concerned, the future development of HDR technology in the market is also considerable. If you want to buy a new TV, it is better to consider a TV with HDR technology.
If you're taking a photo with your iPhone, you'll find that there's an HDR option in the photo taking feature, and if you select this feature, you'll get a much better shot than if you don't, especially if you're jumping or running. Now, HDR technology is not only used in mobile phones, many LCD TVS are also equipped with HDR technology.
What is HDR?
HDR is short for high-dynamic Range, which means "High Dynamic light rendering". Compared with ordinary images, it can provide more dynamic range and image details, greatly improve the light and shade contrast of the screen details, and better reflect the visual effect in the real environment. In simple terms, it is to take several photos with different exposures at a time, and then automatically combine the best photo with highlights and dark details according to the algorithm.
The term HDR was first mentioned in the field of photography, and with the development of science and technology, HDR technology has increasingly appeared on the display equipment. In the world of photography and in the world of display, the concepts are not particularly the same. In television, HDR does not take several pictures at once, as it does in photographs. HDR TV needs to have a higher brightness of the panel, also need to support the TV chip, more need the corresponding film and television resources. These three elements together, can bring a good picture quality effect.
In terms of TV display, the HDR function is mainly aimed at improving the picture width, brightness and dark field performance. And the improvement is so intuitive that it can be seen with the naked eye, not by video geeks but by ordinary viewers.
HDR technology allows TV viewers to experience two features. One is that the picture is "brighter", with clear details in both highlights and shadows, creating an effect in which highlights are not exposed and shadows are not. Make the light bright, while the dark also retains more details, the visual experience is better; On the other hand, more extensive color, HDR TV and HDR video content are based on 10 or 12 bit bt.2020 color space to establish a standard, is the traditional BT. The 709 color space is 60 times, and the color has reached more than 1 billion, which plays a key role in enhancing the color hierarchy and transition of the entire image.
Currently, there are two main HDR formats on the market, one is Dolby Vision, and the other is HDR 10. Dolby horizon implementation is a systematic project, after the video shooting needs by editing, color correction, coding, such as application form an enhanced layer, compared with traditional TV, it can bring color gamut range wider dolby horizon color space, if it is not support dolby horizon of traditional television, enhancement layer won't work, TV or display the traditional signal.
HDR 10 can be understood as the simplified version of Dolby Vision. Its hardware and coding technology are weaker than that of Dolby Vision. HDR TV that supports Dolby Vision can be compatible with HDR 10 downward, but not vice versa.
In the current form of technology, users want to get a better HDR hardware architecture, so they choose LG, sharp, skywalker, samsung, TCL, Letv super TVS which support Dolby Vision technology. These high-end HDR TVS are relatively more reliable. If the HDR10 standard is selected, any current TV that claims to be able to decode HDR movies can be used.
Is HDR necessary
From the perspective of user experience, HDR technology can extend the contrast between the bright and dark areas of the image, so as to present more influencing details and better reflect the visual effect of the real environment. Nowadays, HDR TV has been valued and supported by various TV manufacturers, and there will be more and more products on the market. However, the picture effect of HDR TV is uneven even before the industry standard is perfected.
If you don't have an HDR source, your HDR TV won't be as beautiful as the TV manufacturer says it will be. It has been tested by relevant media and found that without the HDR film source, the difference between the HDR TV bought at a high price and the ordinary TV is not big. In general, the HDR TV backlight system is superior to the SDR products, in the SDR sources, however, higher specifications of the backlight system does not give full play to the function (rub highlights or shadows information in addition to the original information), so there is no HDR sources, we will just put the HDR television as a high-end in ordinary TV to see, nothing special.
I think for ordinary consumers, the mainstream standard on the market is of course the less the better, in this way, when the purchase will be less trouble. However, as far as HDR technology is concerned, the future development of HDR technology in the market is also considerable. If you want to buy a new TV, it is better to consider a TV with HDR technology.
