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.

+ Показать комментарии (20)

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..

Illuminati Mr. писал(а):

Korean war 1950, you have to work it together.

Jack Nunez писал(а):

These are my new favourite thing

roy penn писал(а):

how

Snowman_Fred писал(а):

The music is of bad taste though

Snowman_Fred 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)

mother earth 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...

Aomine Daiki 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.

hladkyj88 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!

MsTiK писал(а):

It would be nice to have a country/person and the time mentioned, too.

SpeedStick писал(а):

This is amazing to see the past in its true colors.

Bewleed писал(а):

Looking back at the BnW days seems like a part of a Movie Set. It just looks unbelievably unreal to see those BnW days in colors and to think that those events were actually real and it's part of our history. Amazing

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

ted kaczynski писал(а):

and how do they colorize movies? not frame by frame i guess. massive computing power somehow.

Matthew Fritch писал(а):

I'm not a big fan of Vox or it's politics, but I deeply appreciate this video and the people in it. Thanks Vox.

Drew Fisher писал(а):

No mention of Sanna Dullaway?

Ana Maria Figueroa Escobar писал(а):

El cerebro

Jack Horsnell писал(а):

Vox iiii

Sleipnirseight писал(а):

Dream job

Antonio De AngelisENGLISH писал(а):

2:34

Madeline Scott писал(а):

That Antarctica one got me good

birdtarekTarek bird писал(а):

wow wow I love this channel & God bless you + ur wonderful team Thanks again and again

CJWarlock писал(а):

When colorization is done well it's well done. Go for it. :)

Sam Hoyek писал(а):

So whats he gonna do when there are no more things to colorize?

dETROITfUNK писал(а):

Why do you keep using the word "obsessive" for coloring photographs ? Stop.

ItzTevin! писал(а):

"But color didn't exist back then, making this inaccurate." - said you

Daniel Johnson писал(а):

Bad title

Worldstar Hip-Hop писал(а):

What's interesting is that in 100 years future historians will probably be remastering our comparatively crappy footage into 300K Ultra HD.

Fabian K писал(а):

Crazy how realistic it looks

Vaibhav писал(а):

AI will do it for us very soon

Lace Winged Saby писал(а):

I do photo restore recently and I loved this video <3

Christian Arriagada Osorio писал(а):

Hello, Do you think the programs perform such excellent jobs?. regards ,

Uni Likes You писал(а):

2:29 torille

Uni Likes You писал(а):

again 3:51 torille

SUGBMixez писал(а):

It makes an unbelievable difference in perception

QUARTERMASTER_EMI6 писал(а):

The most important thing, whether coloured or monochrome, history is as we make it. But to leave the past without colour means people today fail & forget to see that those behind us still stand next to us.

Violet Williams писал(а):

welcome to a new kind of optical illusion

yo писал(а):

worth1000