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Photo Restoration Repairing damaged photos

at a loss as to where to start with this

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  #1  
Old 04-25-2010, 07:00 PM
fstr21 fstr21 is offline
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at a loss as to where to start with this

http://img15.imageshack.us/img15/7724/10229023.jpg

a lot of faded areas that i can imagine that can be easily taken care of with channels but channels are still a huge mystery to me.

any help is appreciated.
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Old 04-25-2010, 08:13 PM
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0lBaldy 0lBaldy is offline
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Re: at a loss as to where to start with this

You might try to scan the picture in color as described here: Scanners, textures, scratches, cracks, silvering

This would enable the use of the channels in your repair
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Old 04-25-2010, 08:30 PM
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Craig Walters Craig Walters is offline
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Re: at a loss as to where to start with this

channels are simply a composite of all the reds, all the greens, and all the blues laid on top of each other and then viewed as one image. let's just talk about rgb channels. each of those three colors IS a channel. you could call them layers, but when we say layers in photoshop/editors, we mean something a bit different. think of three panes of glass, totally transparent. upon one layer we put all the red information. on another we put all the green and on the third we put all the blue. if we lay those one over the other and look at them from the top down, it would look like a normal color image, because all the red into comes through, all the blue, and all the green. it's also how your television works... sort of. a television has three 'guns', one red, one green, and one blue. these guns 'shoot' electrons at the back side of the screen and combine in places to make up all that you see in a color television, at least the old kind with the big tubes for a screen.

so, channels are very similar. the light source of your monitor reads the file data of your image and shoots that appropriate color or color combination to the backside of the screen for you to see. the data is stored in color channels. that data can be displayed separately by photoshop and other editors. in other words, you can look at any one channel by itself and manipulate it in all the ways you can a whole image.

now, what might look a bit puzzling with channels is that this data is stored in grayscale. that means all the data is somewhere between complete black and complete white and each channel is that way. every pixel in the red channel is some shade of black to white and the same with the other two channels. your program intreprets these grays, blacks and whites to mean some shade of color, but when you have the channels displayed separately, you dont see that; you just see the blacks, grays and white. black is considered to be a value of 0 and white is considered to have a value of 255. so, there are 256 possible shades of red, 256 shades of green and 256 of blue, which means when these are combined, the possible number of colors is 256 times 256 times 256 or 16,777,216 possible colors in the rgb scheme.

now, each channel then is a grayscale of the original. all three channels combine to make the whole. those channels can be separated out, worked on or not and then combined back to make the whole again. it's really just a simple math exercise and some interpretation rules done internally in your editor.

different file formats, like .jpg, .bmp, .png are just different ways of displaying all this information or in adding extra things to the basic information and so on. each has its strengths and weaknesses. but each file format uses channels (unless it's a very basic format like grayscale itself).

grayscale is designed on the old 8 bit system. a bit is the smallest unit of digital data. in the old system, 8 bits equalled a byte. but now that we have three channels, that's three, 8 bit channels or 24 bits total, 8 for red, 8 for green and 8 for blue. so channels are really just a way of arranging the data in a convenient system for later display.

clear as mud now?
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Old 04-25-2010, 08:31 PM
fstr21 fstr21 is offline
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Re: at a loss as to where to start with this

sadly not an option only received it as jpg
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Old 04-25-2010, 08:46 PM
fstr21 fstr21 is offline
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Re: at a loss as to where to start with this

kraellin, i had to sit down for that
i guess my main question now is how does one work in say green channel, and merge that into red and so on
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Old 04-25-2010, 09:06 PM
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Re: at a loss as to where to start with this

that shld be covered in your editor's manual. which editor are you using?
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Old 04-25-2010, 10:54 PM
w23 w23 is offline
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Re: at a loss as to where to start with this

just add a lens flare and call it a day.
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Old 04-25-2010, 11:30 PM
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Re: at a loss as to where to start with this

Why not crop the image and place the focus on the people.
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Old 04-26-2010, 03:24 AM
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Re: at a loss as to where to start with this

If all you have is this sample that has been converted to Gray Scale (Black/White) Then all the channels will be the same and of little use.
The tools used will be determined by what version of Photoshop you are using... selective lightening and darkening with a sundry of tools that work in those modes will work on this image along with selective curves adjustment layers to even the photo out before cloning and healing

I know for a restore you are supposed to retain as much of the image as possible and are not supposed to crop the image... But for this one where the gent on the right is almost obliterated and the space on the left is just cars and I am not an artist... I dood it anyway!

For this quick fix I cropped it some to focus on the family
used mostly the history brush in multiply mode to even the image out some
some masked, dust and scratch removal
noise removal
sharpened a bit
cloned some eyes onto the guys from the girls

a lot more work to be done but this will give you a quick idea

If you are a good artist you can paint in a lot more detail
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File Type: jpg family.jpg (196.7 KB, 87 views)
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Old 04-27-2010, 01:08 AM
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Southbay Southbay is offline
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Re: at a loss as to where to start with this

Polaroid dust & scratch + channel mixer. Burned some shadows, cloned some spots.
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