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MSU Graphics & Media Lab Report #2 on stereo films quality assessment

Graphics & Media Lab CMC of Lomonosov Moscow State University has about 10 years' experience in comprehensive analyzing of compressed video. In March 2013 Graphics & Media Lab (in cooperation with IITP RAS) has released its first report on stereo films quality assessment. This first report presented our evaluation results and overall quality comparison of 5 stereo films.

After a very successful release of Avatar the interest to stereo 3D films endures now a bad slump. Some people even think that the 3D is dying and has no future. This decline of 3D demand has a serious background: many movie goers experience headache and eyestrain while watching a stereo film. The Lab decided to analyze the stereo films, captured with stereoscopic camera systems and to investigate the potential reasons of the irritating annoyance. The main examined problems, discovered during the film analysis:

  1. excessive horizontal disparity
  2. vertical disparity
  3. color mismatch (see Image #1)
  4. sharpness mismatch


Image #1: 'Example of color mismatch'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/Drive_Angry_Color_problem_vis.gif)

We've got a lot of positive comments from professional stereographers on our first report and were encouraged to continue the work on stereo film evaluation. We are planning to publish in the 2nd half of 2013 another three reports and invite the stereographers for cooperation.

Now we have a pleasure to share with the industry professionals our second report on stereo film quality analysis, also including five 3D movies filmed in stereo:

  1. Dolphin Tale
  2. Drive Angry
  3. The Three Musketeers
  4. Hugo
  5. Sanctum

In the overall comparison of the examined films we compare 3D movies from the 1st and 2nd reports, altogether 10 films.

Depth Budget

Take a look at the depth budget (see the Image #2): 3D films created in 1994 have a big depth budget; the movies from 2011-2012 years have a big negative parallax. 'Hugo' has a lot of objects before the screen, on the contrary, in 'The Three Musketeers' all objects are behind the screen.


Image #2: 'Depth Budget vs. Release Date'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/depth_budget_vs_release_date.png)

Vertical Disparity

It's noticeable that all the recent films ('Hugo', 'The Three Musketeers', 'Pirates of the Caribbean') have a good vertical disparity. It means, that the situation is getting more and more better with the lapse of time (see the Images #3 and #4).


Image #3: 'Vertical Disparity vs. Release Date'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/vertical_parallax_vs_release_date.png)

It's obvious, that the stereo quality depends also on the film budget, namely on the 2D to S3D conversion budget. We have estimated the relation between the film budget and existing artifacts (see the images #4, #6 and #8). But unfortunately these evaluations can't give an accurate information, because we don't know the conversion budgets (source of the film budgets is http://www.imdb.com/)


Image #4: 'Vertical Disparity vs. Film Budget'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/vertical_parallax_vs_movie_budget.png)

Color Mismatch

According to the Images #5 and #6 the films 'Hugo', 'Three Musketeers' and 'Pirates of the Caribbean' have the best color measures.


Image #5: 'Color Mismatch vs. Release Date'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/color_mismatch_vs_release_date.png)


Image #6: 'Color Mismatch vs. Film Budget'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/color_mismatch_vs_movie_budget.png)

Sharpness Mismatch

Image #7 shows a good trend of improvement in the last years: the films 'Hugo', 'Three Musketeers' and 'Pirates of the Caribbean' have a minimal sharpness mismatch measures in comparison with the other evaluated movies.


Image #7: 'Sharpness Mismatch vs. Release Date'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/sharpness_mismatch_vs_release_date.png)


Image #8: 'Sharpness Mismatch vs. Film Budget'
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/sharpness_mismatch_vs_movie_budget.png)

In the screenshots ##1-4 below please find the samples of valuable comments from professional stereographers and some more charts and visualisations of distortions:


Screenshot #1
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/report2_screen_1.png)


Screenshot #2
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/report2_screen_2.png)


Screenshot #3
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/report2_screen_3.png)


Screenshot #4
(Image source: http://www.compression.ru/video/vqmt3d/press-releases/report2/images/report2_screen_4.png)

Acknowledgements

We would like to thank for valuable comments, opinions and feedbacks, which helped us in preparing this report (in alphabetical order):

A key motive of this report is to improve the stereo quality and therefore to reduce eye- and headache. The Graphics & Media Lab hopes, that a high 3D video quality would contribute to a continually increasing number of people, leaving the modern theaters without annoyance and with good impressions from the image quality and storytelling. The report is available to all who may be concerned and interested in improving the quality of stereoscopic content. The next reports on 3D quality will be published in the near future on the web-site http://compression.ru/video/vqmt3d/.

For press

Reports overview

Stereo-analysis project description

Report 1 (S3D shooting quality analysis of 5 movies)

Release date: March 7, 2013

Download (Additional info for bloggers and press)

Pages: 246;   Figures: 295

Film list:

  • Pirates of the Caribbean: On Stranger Tides
  • Resident Evil: Afterlife
  • Step Up 3D
  • Galapagos: The Enchanted Voyage
  • Into the Deep

Film list:

  • Dolphin Tale
  • Drive Angry
  • Hugo
  • The Three Musketeers
  • Sanctum

Film list:

  • Alice in Wonderland
  • Clash of the Titans
  • Conan the Barbarian
  • Green Lantern
  • Abraham Lincoln: Vampire Hunter

Report 4 (S3D shooting quality analysis of 5 movies)

Release date: October 1, 2013

Download

Pages: 301;   Figures: 402

Film list:

  • A Very Harold & Kumar 3D Christmas
  • Pina
  • Step Up Revolution
  • Resident Evil 5: Retribution
  • The Amazing Spider-Man

Film list:

  • The Avengers
  • The Chronicles of Narnia: The Voyage of the Dawn Treader
  • Gulliver’s Travels
  • Immortals
  • Wrath of the Titans

Report 6 (Stereo Window analysis of 10 movies)

Release date: September 10, 2014

Download (Additional info for bloggers and press)

Pages: 415;   Figures: 455

Film list:

  • The Amazing Spiderman
  • The Three Musketeers
  • Pirates of the Caribbean: On Stranger Tides
  • Dolphin Tale
  • Drive Angry
  • The Avengers
  • John Carter
  • G-Force
  • Abraham Lincoln: Vampire Hunter
  • Clash of the Titans

Report 7 (Stereo Window analysis of 10 movies)

Release date: October 22, 2014

Download (Additional info for bloggers and press)

Pages: 333;   Figures: 348

Film list:

  • Pina
  • Step Up Revolution
  • Resident Evil: Retribution
  • Hugo
  • Immortals
  • A Very Harold & Kumar 3D Christmas
  • Green Lantern
  • Conan the Barbarian
  • Wrath of the Titans
  • Alice in Wonderland

Film list:

  • A Very Harold & Kumar 3D Christmas
  • Abraham Lincoln: Vampire Hunter
  • The Avengers
  • Alice in Wonderland
  • Conan the Barbarian
  • The Chronicles of Narnia: The Voyage of the Dawn Treader
  • Clash of the Titans
  • Drive Angry
  • Dolphin Tale
  • Galapagos: The Enchanted Voyage
  • Green Lantern
  • Gulliver's Travels
  • Hugo
  • Immortals
  • Into the Deep
  • Pirates of the Caribbean: On Stranger Tides
  • Pina
  • Resident Evil: Afterlife
  • Resident Evil: Retribution
  • Sanctum
  • Step Up 3D
  • Step Up Revolution
  • The Amazing Spider-Man
  • The Three Musketeers
  • Wrath of the Titans

Report 9 (Temporal Shift, Stuck-to-Background Objects, 2D to S3D conversion in Captured Films)

Release date: January 18, 2017

Download (Additional info for bloggers and press)

Pages: 467;   Figures: 529

Over 100 films are in film list, including:

  • Creature from the Black Lagoon (1954)
  • World War Z (2013)
  • Dredd (2012)
  • Thor (2011)
  • The Hobbit: An Unexpected Journey (2012)
  • Life of Pi (2012)
  • Oz the Great and Powerful (2013)
  • The Legend of Hercules (2014)
  • Men in Black 3 (2012)
  • Dial M for Murder (1954)
  • Pirates of the Caribbean: On Stranger Tides (2011)
  • The Last Airbender (2010)
  • TRON: Legacy (2010)
  • Jack the Giant Slayer (2013)
  • The Great Gatsby (2013)
  • Pacific Rim (2013)
  • The Avengers (2012)

Report 10 (Overall analysis of 105 movies)

Approximate release date: 2nd-3rd quarter of 2017

The film list includes 105 movies


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Last updated: 08-September-2014

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