HDR Discussion Thread

[LordoftheRings]

Dress code?
_____

https://www.youtube.com/watch?v=hvuH...ature=youtu.be

[Penton-Man]

Originally Posted by LordoftheRings

Dress code?

Oh Lord, brings back painful memories of spit shining shoes and polishing brass for ‘Full Dress’, for those here who’ve actually served.

Let’s see what today’s fun has brung.

[Penton-Man]

Originally Posted by LordoftheRings

Mais c'est très bien ça, mince alors.

The way to phonetically pronounce ‘hello, you are beautiful’ when in mainland China (at least the way I do), repeat after me.... Ning How Pal Len.

http://www.pressreleasepoint.com/dol...viegoers-china

[Penton-Man]

Originally Posted by LordoftheRings

Vous avez aussi constaté, parfait.

https://forum.blu-ray.com/showthread...r#post14067448
Main meetings going on now up the coast a bit from ^ and rather than the San Diego Marriott like for the past CEDIA, the La Jolla Marriott for the thinkers....and sea lion affectionados.

Thee abstract of one contribution (the presentation is far more comprehensive)…..

Joint Video Experts Team (JVET)
of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11
10th Meeting: San Diego, US, 10–20 Apr. 2018 Document: JVET-J0015-v1

Title: Description of SDR, HDR, and 360° video coding technology proposal by InterDigital Communications and Dolby Laboratories
Status: Input document to JVET
Purpose: Proposal
Author(s) or
Contact(s): Xiaoyu Xiu
Philippe Hanhart
Rahul Vanam
Yuwen He
Yan Ye

Taoran Lu
Fangjun Pu
Peng Yin
Walt Husak
Tao Chen Tel:
Email:
{xiaoyu.xiu, philippe.hanhart, rahul.vanam, yuwen.he, yan.ye}@interdigital.com

{tlu, fpu, pyin, whj,tchen}@dolby.com
Source: InterDigital Communications, Inc.
Dolby Laboratories, Inc.
_____________________________
Abstract
This response to the Joint Call for Proposals on Video Compression with Capability beyond HEVC was jointly developed by InterDigital Communications and Dolby Laboratories. It answers all three categories covered in the joint CfP, the SDR category, the 360° category, and the HDR category. The software of this response is written based on the JEM and the 360Lib software.

Significant coding efficiency improvements and reasonable decoding complexity are factors important to the success of the new video coding standard. Design of the core SDR codec in this response took both factors into careful consideration: many of the compression technologies in the JEM are simplified to reduce average and worst case complexity with negligible coding performance loss, and two additional compression technologies are added to further improve coding efficiency. The objective performance and complexity of the proposed SDR codec are summarized as follows:

Compared to the HM anchors, the proposed SDR codec achieves:
• For constraint set 1, {Y, U, V} BD-rate savings: {35.72%, 44.75%,
44.95%}, Enc time: 1710%, Dec time: 263%
• For constraint set 2, {Y, U, V} BD-rate savings: {27.18%, 43.81%,
44.51%}, Enc time: 1827%, Dec time: 301%
Compared to the JEM anchors, the proposed SDR codec achieves:
• For constraint set 1, {Y, U, V} BD-rate savings: {3.98%, 3.28%,
3.16%}, Enc time: 205%, Dec time: 33%
• For constraint set 2, {Y, U, V} BD-rate savings: {3.64%, 2.55%,
4.48%}, Enc time: 203%, Dec time: 45%

The proposed SDR codec is used as the core coding engine in the 360° category and the HDR category. For the 360° category, projection formats customized to the input video are used in this response as a “coding tool” to improve coding efficiency. Additional 360° specific compression technologies are proposed to improve the subjective quality, especially in terms of alleviating the often observable “face seam” artifacts for this type of video. In terms of objective coding performance using the end-to-end WSPSNR metric, this response achieves average BD-rate savings for the {Y, U, V} components of {-33.87%, -54.04%, -56.79%} and {-13.51%, -18.29%, -20.96%} over the HM and JEM anchors, respectively.

For the HDR category, this proposal includes two major coding tools: an in-loop reshaper and Luma-based QP Prediction. The in-loop reshaper maps (“reshapes”) Luma sample values inside the coding loop according to a 1-D LUT for better HDR coding efficiency. The reshaping process does not require any changes to the existing DPB handling mechanism. Luma-based QP Prediction reduces the bitrate overhead of the deltaQP syntax when spatial Luma-dependent QP adaptation (LumaDQP) is used for HDR coding. Pre- and post-processing are explicitly excluded in this proposal since all additional tools reside inside the core codec. The HDR bitstreams submitted for the CfP target better subjective performance using the above tools. The in-loop reshaper can also be configured to maximize HDR objective metrics.

In summary, this response provides a complete set of solutions for all three types of video formats essential to the video applications targeted by the new video coding standard. The codec in this response is shown to achieve large coding efficiency gain and substantial subjective quality improvement in all three categories. The decoding complexity increase compared to HEVC is asserted to be reasonable.

[Penton-Man]

Note to self, don’t peruse threads on outside websites where bloggers babble about nits and “shrunken pupils” as I will undergo neuron loss truly leading to a shrunken brain and propensity to subdurals when I occasionally fall off my bike.

I would much prefer to read that member zmarty , when doing his HDR thing – https://twitter.com/TheHDRChannel , were to post a pic like this….



And then challenges folks to guess which scene it is in whatever clip he produces on that channel. Could be a fun game and actually intellectually stimulating at the same time…..and save grey matter to boot.

[Penton-Man]

Originally Posted by Steedeel

Sunderland

Steed, we too have a Sunderland here in the states, a bit warmer though . Click on google maps for the event, zoom out and look left and slightly down from the red balloon ….https://www.smpte.org/sections/washi...vents/bbtb2018

[Penton-Man]

Originally Posted by Penton-Man

the red balloon ….

take it away LordoftheRings.
it's lunch time for moi.

[Penton-Man]

https://forum.blu-ray.com/showthread...h#post14854545
^ Is now this month. Will these touristas - http://www.edcf.net/news.php?id=105 get to see Samsung Cinema LED screen in action before the planned press event?

Perhaps.
Geoff, you should have registered and come visited.

[LordoftheRings]

Originally Posted by Penton-Man

take it away LordoftheRings.
it's lunch time for moi.

I'm right in the middle of my peanut butter/banana/jelly sandwich.

https://www.youtube.com/watch?v=KorA...ature=youtu.be

Originally Posted by Penton-Man View Post
the red balloon ….

[puddy77]

Interesting twist. Samsung is going to use EclairColor HDR on their cinema LED screens: https://www.eclaircolor.com/en/news/...claircolor-hdr

I had expected them to somehow push their HDR10+ on it. But I guess since EclairColor is already in the cinema space and pushing hard to expand out of France, they partnered with them instead.

[Geoff D]

You don't need dynamic metadata in the cinema though, not if you're using a screen which has the same properties from cinema to cinema. Exact same reason why Dolby Vision doesn't use metadata in its theatrical guise, all the projectors & screens are set up to the same specifications.

[puddy77]

Originally Posted by Geoff D

You don't need dynamic metadata in the cinema though, not if you're using a screen which has the same properties from cinema to cinema. Exact same reason why Dolby Vision doesn't use metadata in its theatrical guise, all the projectors & screens are set up to the same specifications.

I know. But I guess I expected them to brand it the same so they could push the home dynamic version, like Dolby does. Or somehow keep it in-house since that seems to be their M.O. I didn't foresee a partnership with EclairColor. But I guess it's the only HDR alternative to Dolby.

[Penton-Man]

Originally Posted by Penton-Man

Let’s see what today’s fun has brung.

http://www.globenewswire.com/news-re...-to-Japan.html

[Penton-Man]

PMed to me - https://www.youtube.com/watch?v=fzrwvJsLIho#t=11m25s

egg on face not just for an AV journalist, but I’m thinking lots of people speaking above their expertise who propagated this myth repeatedly on internet forums/message boards?

Crickets now from the culprits?

[Penton-Man]

Patience, grasshoppers, no myth and more accurate…..https://forum.blu-ray.com/showthread...e#post14774953

[Penton-Man]

Reminder to locals for this Saturday - https://forum.blu-ray.com/showthread...e#post14919902

[Penton-Man]

On the digital side of things….wuz up next locally in 40-ish days? (Registration is free until midnight, May 26, 2018 )

Seminars, master classes, screenings and announcements, e.g. http://www.cinegearexpo.com/la-expo-special-screenings

[Penton-Man]

Originally Posted by Penton-Man

PMed to me -

which I've opened too late - http://www.redbox.com/hondabikesweeps
Henceforth PMers, please title such PMs as 'Critical Time Sensitive Information'. I really would have liked to have entered that to take a chance at winning the grand prize, for you never know.

[Penton-Man]

Originally Posted by Geoff D

film

Originally Posted by Penton-Man

to locals

https://twitter.com/SidGrauman/statu...32218315898880

[Geoff D]

Originally Posted by puddy77

I know. But I guess I expected them to brand it the same so they could push the home dynamic version, like Dolby does. Or somehow keep it in-house since that seems to be their M.O. I didn't foresee a partnership with EclairColor. But I guess it's the only HDR alternative to Dolby.

Exactly right: HDR10 and Technicolour and whatever aren't theatrical HDR standards whereas DV and EclairColor are (Christ, we've got more EclairColor screens in the UK than we have Dolby Vision screens, that is to say NONE for the latter ) so if you're gonna swerve DV then it makes sense to 'plug in' to the next most popular alternative for theatrical HDR.

On a related note, I mentioned something before about the need for perforated screens w/ref to do with Samsung not using Dobly Atoms - me thinking that these direct-view screens weren't perforated - but apparently they are perforated so speakers can continue to be sited behind the screen as in a conventional projection set-up.