How do I convert a color picture to gray

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ı want to create color picture from gray picture wıth c # how can ı do ıt. ıt ıs sımple code but ı dont know how can ı do ıt

Posted 17-Apr-13 10:39am

arifemutlu

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joshrduncan2012 17-Apr-13 16:43pm

Great question to ask google.

[no name] 17-Apr-13 16:44pm

A better question is why do you keep asking questions and then deleting them when you get answers? What have you tried to do for yourself? Have you read the posting guidelines? Where is the code the you have written that demonstrates your problem? What problem is that you are experiencing?

Sergey Alexandrovich Kryukov 17-Apr-13 16:49pm

You should always tag a imaging library you want to use. It could be System.Drawing (based on GDI+), WPF (based on DirectX) or something else, 3rd-party.
—SA

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CPallini · Accepted Answer · 2013-04-17T10:46:00

Solution 1

Here a basic idea: "Image Transformation: Grayscale to Color"[^].

Posted 17-Apr-13 10:46am

CPallini

Comments

arifemutlu 17-Apr-13 16:50pm

thank u so much ı want to learn ask to ask sorry about thıs questıon

Maciej Los 17-Apr-13 16:55pm

It should be enough for start ;)
+5

Sergey Alexandrovich Kryukov 17-Apr-13 16:59pm

If you see my answer, you will see that the topic is more complex than that... :-)
—SA

CPallini 18-Apr-13 3:22am

I am aware of. That's just a 'basic' (rough) idea. The question make me guess he/she has no experience on the matter. :-)

Sergey Alexandrovich Kryukov 18-Apr-13 9:53am

Sure. Moreover, it's most likely that OP really needs the simplest possible way only.
—SA

CPallini 18-Apr-13 3:20am

Thank you.

Sergey Alexandrovich Kryukov 17-Apr-13 17:00pm

My 5, but please see my answer for more information.
—SA

salomejade 1-Oct-15 8:18am

it is easy now a days to use a photo editor and change the images into grey shade. You can capture images as grey while clicking picture i think. I have seen some great B/W pics at http://www.leelucasphotography.com/ which i think are originally grey.

Sergey Alexandrovich Kryukov · Accepted Answer · 2013-04-17T10:59:00

In addition to Solution 1:

This is just one of basic methods. The problem is not as simple as many think. In professional photography, real re-touch masters choose different approaches for different scenes, depending on the purely artistic goals. One of the method is to put saturation down. Another very popular method is to take just one of the R, G or B channels; which one? again, depending on the scene. The generalization of this approach is using two or three channels as gray, balancing them with different weights. Other effects and filters are applicable. And you can implement any of these approaches.

Basically, the answer depends on the imaging library you want to use. Please see my comment to the question. For some more detail, please see my recent answer:
how to ımage process wıth c#[^].

Next time, please don't forget to tag your question properly.

Also, I highly recommend to look for a great open-source library AForge.NET:
http://en.wikipedia.org/wiki/AForge.NET[^],
http://www.aforgenet.com/[^].

For the problem you are interested in, putting this library to use can take just a few minutes. The library is well documented and complete with plenty of easy-to-understand code samples. Its author, Andrew Kirillov, is the CodeProject member. Please see his articles on the topic:
http://www.codeproject.com/Articles/Andrew-Kirillov#articles[^].

Good luck,

—SA