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]

+ Показать комментарии (20)

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

Trevor Madsen писал(а):

You know, the most common weak point in colorizing the B&W pictures is color of lips. You all color the lips "normal red" and then that`s the reason why all lips tend to orange in your colorized pictures. While naturally the lips are not ordinary red, it is a kind of red that we call it magenta. So you guys must add magenta more than yellow, to reach out real color of lips.

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.

Some Maxiboy писал(а):

Stay untouched? Colorizing artists take these pictures to the level the photographer of the time wished to portray them - life like. Snapshots of moments in history. As colorful as a clear memory, a dream or real life.

Pewdiepie fan писал(а):

can he color Abraham Lincoln

Rank S pilot, Tatenashi писал(а):

seems easy right? IT A SHITLOAD OF WORK

Alma Miranda писал(а):

Outstanding work. Particularly because the skin tones are true to life, not sepia toned.

Trevor Madsen писал(а):

You know, the most common weak point in colorizing the B&W pictures is color of lips. You all color the lips "normal red" and then that`s the reason why all lips tend to orange in your colorized pictures. While the lips are not ordinary red in reality, it is red that tends to magenta. So you guys must add magenta more than yellow, to reach out real color of lips.

TraceurDoc1 писал(а):

Wish these guys did this with Chicago Worlds Fair/White City footage!

Promise You писал(а):

Looks good

Michael O Neill писал(а):

Some take up to a month to colour?....I'll leave it to the experts thanks!

sneezayy писал(а):

You bring colours to my life

sandcastlecollapsing писал(а):

Amazing work and yes it makes history feel very present. Only issue is that it’s still a best guess at what the colors were, even with painstaking research, and especially when of average people or places versus infamous moments and historical figures.

Chris Lee - UK писал(а):

I absolutely love restoring and colourizing old images

My Sexy Booty Here: myvdeos•com писал(а):

What a cool passage

Evelyn Zucker писал(а):

I love how the interview is of such poor quality it looks worse than the modernized old footage.

Babbabuey писал(а):

It's amazing how they bring history so seemingly close to us by colouring these images.

The samson писал(а):

You guys are real good keep up the good work it looks like they never passed away

Sinisa Jakelic писал(а):

lacks the yellow tone

Fabrizio Mecco писал(а):

Tutto torna a prendere vita, ogni immagine e foto, anche le pi "antiche", hanno un'infinit di storie nuove da raccontare e ci trasmettono emozioni che vanno oltre l'incredibile!

Marcel писал(а):

Even AI colorization looks magical

Lil Yet писал(а):

now you can do it in a few clicks