Колоризация. Реставрация цвета в черно-белых фото

[садовник]

Превратить цветное фото в черно-белое сейчас, в эру компьютеров, не составит никакого труда.

А вот ч/б преобразовать в цветное - уже нетривиальная задача. Даже с помощью того же компьютера.

В компьютере каждый цвет (их более 16-ти миллионов) имеет свой номер С, который рассчитывается по формуле:

C = R*(256^0) + G*(256^1) + B*(256^2),

где R (Red) - красная составляющая нашего цвета (значения от 0 до 255),
G (Green) - зеленая составляющая (значения от 0 до 255),
B (Blue) - синяя составляющая (значения от 0 до 255).

Соответственно
номер красного цвета: 255*(256^0) + 0*(256^1) + 0*(256^2) = 255
номер зеленого цвета: 0*(256^0) + 255*(256^1) + 0*(256^2) = 65280
номер синего цвета: 0*(256^0) + 0*(256^1) + 255*(256^2) = 16711680
номер серого цвета: 128*(256^0) + 128*(256^1) + 128*(256^2) = 8421504

Как получить серый оттенок Y, имея RGB-составляющие цвета C? - По следующей формуле:

Y = 0.299*R + 0.587*G + 0.114*B,

где R, G, B - цветовые составляющие цвета C.

Обратная задача. Как получить цвет C (или его цветовые RGB-составляющие), соответствующий оттенку серого Y? - Тут всё сложнее:

0.299*R + 0.587*G + 0.114*B = Y

Имеем уравнение с тремя неизвестными: R, G и B. 256*256*256=16 777 216 комбинаций (это только для одной точки на фото).

Подозреваю, что на начальном этапе существенная часть RGB-комбинаций как-то отсекается, но это не сильно облегчит задачу реставратору.

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S. M. Hossein Mousavi писал(а):

Nice job Mariana.

Dave Vierthaler писал(а):

@ 0:55 you captured a real slice of life. Your work is amazing in bringing life back to those lost. I am mesmerized by your great work, skill, precision and commitment to tell the stories of those who can’t.

Matheus De Oliveira писал(а):

Maravilhoso o trabalho, descobri voc agora pouco, que orgulho de voc.

A E A писал(а):

Music did not match some images imo. Amazing pictures nonetheless.

Moutton Noir писал(а):

These are incredible- it's amazing the transformation that takes place when the images are colorized- it's as if life pours into the figures. The only image that doesn't work for me is the concentration camp inmates- their complexion is surely too healthy?

untitled untitled писал(а):

beautiful art that u bring to us..

Zoologyrome Mr. писал(а):

Korean war 1950, you have to work it together.

Jack Nunez писал(а):

These are my new favourite thing

FISH BE WITH YOU писал(а):

how

BokkenRyder писал(а):

The music is of bad taste though

BokkenRyder писал(а):

0:42 that's a corpse

ChristophersMum писал(а):

Thank-you so much Marina, Although I grew up in the 50s and familiar with black and white photography, the way these photographs come to life adds poignancy to them. Really good work. (Had to mute the music though)

Freyja писал(а):

I think 1:54 is taken from the 90s/2000s? cause i think I remember the news. and all picture from 90s already have colors

Mi P писал(а):

mother earth that burning monk picture was taken in '60s

T писал(а):

I can't get over 1:05 . It looks like it's always been in colour

Herta Schneider писал(а):

T liTTle Too orangy/peachy buT...

Eumar Cabalse писал(а):

Me: black and white :( Me: Coloured :)

TheConorsmithusa писал(а):

amazing work but it's a shame the years weren't put with the years of the photos...

TheBookaholic писал(а):

Even more amazing if we could see the year each picture was taken.

SaxifrageCole писал(а):

amazing! i'd love any additional context for pictures you could provide in future videos

Daniel Moreira писал(а):

Subjects that look historical become real people... The surroundings become ordinary... Everything becomes relatable... And it dawns on us that world has always been very much the same!

xBrownGirLinTheRingx писал(а):

Amazing work!

P.S. Х/Ф "В бой идут одни старики" в 1973г. снят на ч/б кинопленку. А в 2009г. был колоризирован.

Подробнее о колоризации здесь:   *** Авторизуйтесь, чтобы увидеть ссылку ***  

[Любимый гость]

[Смолянка]

Садовник, ух, как все сложно с этими формулами, но результат впечатляет!

[садовник]

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Vox писал(а):

You can find more photos on the artists' pages. Check them out: Jordan Lloyd (@jordanjlloydhq): http://dynamichrome.com/ Mads Madsen (@Madsmadsench): http://www.colorized-history.com/ Marina Amaral (@marinamaral2): http://www.marinamaral.com/ Dana Keller (@HistoryInColor): http://www.danarkeller.com/ Patty Allison (@imbuedwithhues): https://imbuedwithhues.wordpress.com/ The Paper Time Machine: https://unbound.com/books/paper-time-machine

Lumi Land писал(а):

i am 18 yo old artist. Can anyone check out my work ??

mincraft horsey писал(а):

hi

HiangkuTibn писал(а):

Yeh what about the video, did they track every frame?

eshaan Bidarakoppa писал(а):

I started colorization because of this video and now do it as a hobby.

The Ishaan and Ankita Show писал(а):

I turned this into triple 6 likes

Jim Readey писал(а):

Hey, wonderful video! (Fwiw, 1941 isn't "over 80 yrs. ago..."!)

Hwica писал(а):

Why would anyone click on not like?

Steve Mellor писал(а):

Amazing I would love to do this.

Irsa A. писал(а):

When I saw the colourized photo, I actually realised that everything back then is actually the same as today.

frontleftfender писал(а):

They should have just taken the picture in colour instead of messing with sepia settings

Asherjoshua098 писал(а):

Then the new version of Adobe photoshop came out to end their careers :(

choclate_ oxygen писал(а):

1990 black and white photo after editing colour i feel it was taken just yesterday.

Big Falcon Rocket писал(а):

Hmm...careful with "white-washing" you so called "colorists".

Pan Fam писал(а):

Que Dios nos perdone.

GREGORY WELLMAN писал(а):

I always wanted to see old photos come alive and as an artist I developed a pretty good technique that kind of made old monochrome photos or film colour, but only in my head. Dedicated colourisers are pretty much heroes to me and I thank them. This was a great video and I really enjoyed watching it. I was surprised to hear that they put down many layers of colour on skin though. I still find most skin colour too pinky beige, and if more than one person is in a photo they all seem to have the same colour skin or very close to it. Also background areas that are plain suffer from one wash will do. This video however showed exceptions to this at times so I can see how good it can get.

360 VR писал(а):

Excellent Work . Great Story. Valuable

Karl Knaddel писал(а):

Very interesting documentation. However, I missed one topic which is very important for an accurate coloration. It is the determination of the actual original lumina value of a color found on a black and white original. The background is the color behavior of old black and white films. These films had no color-neutral luminance behavior. This effect may have to be corrected when determining the luminance of a color during coloration. I hope that this topic is only missing because the video could not consider all aspects of coloration, right?

Albertina Karima писал(а):

Sounds simple right? "Yeah, it's a shitload of work."

Aimless Idiot писал(а):

YES! They still sold this book in my favourite book store! I am so lucky that I got to buy literally the last one they had in stock!!!

nehan писал(а):

its was a history when the pictures just looks like that, when they colorize the pictures, its just like nowday picture, nothing special.

Channah Stark писал(а):

Wait I can make a living of my colourizing photographs :o Cool! I just did it for fun. Enjoyed the video! I never heard anyone complain about the fact that photographs should remain untouched. The only 'bad' thing I heard was that a shirt would likely be another colour. But that's just good feedback to improve the quality.

Boio Productions писал(а):

its really weird how much more life these images are given. I don't see it as the past anymore. I see it as real people that I could have met. And in a weird way it kinda makes me sad, because they lived a hundred years ago and we'll never be able to hear their story.

Sean Delap писал(а):

Colour gives a picture a bit of life i dont see how that would ruin it maybe it makes the past more recent because in reality the past was recent.

Sander Lus писал(а):

Easy with AI, today;