Future Tech Trends | What Is HDR ?
The SIM2 HDRDUO takes an innovative two machine approach to delivering the power and precision that HDR needs
The SIM2 Nero4 is among the first wave of projectors able to deliver HDR
What Is HDR ? and WHP-283-Hybrid used for the HLG standard being put forward by the BBC and Japan ’ s NHK to offer a broadcast solution .
Both these video modulation curves are absolute curves , which means that a certain digital input value has to correspond to a precise display luminance level . This is a complete game changer . Moreover , HDR carries a wider gamut of colours ( WCG ) which also offers challenges .
Taking into account changing screen sizes , screen reflective surfaces and lamp power ( the more important parameters in a projection installation ) the display luminance versus the visible image changes , so , several different ‘ EOTF ’ curves are needed . EOFT stands for Electro-Optical Transfer Function and it delivers the process that describes how to turn digital code words into visible light . As result , the projection system behaviour needs to correspond to the ST2084 EOTF standards as well . Moreover , the Colour Gamut has to change from REC 709 ( previous HDTV standard ) to REC 2020 ( or a subset as DCI-P3 ). So getting here has been no easy task and further challenges had also to be met by the manufacturers to tame and deliver the new technology .
These challenges were perhaps most pronounced in the projection world . The implementation of HDR video processing and the management of a wider colour gamut in SIM2 projectors meant the maker needed to add an HDMI video input capable of receiving the HDR video signal -a video processing of 10-bit per colour at least ( 12 bit per colour in some parts ), a group of EOTF pre-set curves which are
High Dynamic Range is the capability to represent a large luminance variation in the video signal , i . e ., from very dark values ( 0.00005 cd / m 2 ) to very bright values ( greater than 1000 cd / m 2 ). Standard Dynamic Range ( SDR ), support luminance values in the range of 0.0002 to 100 cd / m 2 . HDR creates brighter whites , darker blacks and brighter colours that better match images seen in the real world . The enhanced image quality due to HDR is appreciable under a wide range of viewing environments . selectable via on-screendisplay , an automatic SDR / HDR selection ability and of course the ability to process the larger colour gamut demanded by the format . SIM2 has delivered on all of this and we feel has really strong platforms from which to deliver the next generation of vison experiences .
Specifically , we are offering several products that can deliver these new experiences . SIM2 offers the NERO4 projector , a 4K UHD , HDR , single chip DLP model with 5000 lumens , via a lamp light source , the innovative HDRDUO , HDR DCI-P3 , a dual projector three-chip DLP system offering 9000 lumens , via a lamp light source and the HDR47 , a 47in HDR 6000 nit professional monitor mainly devoted to research centres , universities and the car industry .
The HDRDUO is particularly impressive and permits an extended dynamic range unreachable by a single projector , a perfect SMPTE 2084 video behaviour and a level of brightness which , in conjunction with the DCI-P3 colour gamut it offers , delivers the ability to exceed digital cinema requirements .
Ultimately , the context in which to see HDR is that it represents a paradigm shift in the video world , comparable to the transition from black / white to colour in TV – it is that important . This technology will remain and develop because it represents a real step forward in deliverable benefits which the whole of the consumer electronics world can get behind and deliver on the dream of more realistic imaging .
More Information : Invision + 44 ( 0 ) 1359 270280 , www . invisionuk . com
10th-11th May 2017 , Sandown Park , Surrey . Sponsored by March 2017 | 11