?
Solved

Changing Palette Values to GrayScale

Posted on 1999-01-06
1
Medium Priority
?
254 Views
Last Modified: 2010-04-04
I can´t figure out how to change the palette of my application to support 64 different colors in grayscale, ranging from white(0) to black(63).
0
Comment
Question by:skaba
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
ptiemann2 earned 400 total points
ID: 1354998
This question is _very_ general..

1) do you mean how to convert a RGB value to 6 bit greyscale?

or

2) do you mean to have a palette of 64 grey values displayed correctly in Windows (which is a little difficult if you have a 256 colors-only environment.. you need to handle a few wm_paletteXXX messages)

Let me know and I'll be able to help then.

The conversion (r,g,b) --> grey is a sum LIKE this:

grey = r * 0.33 + g * 0.4 + b * 0.27

I don't have the exact values at hand.. it has to do with the fact that the human eye is more sensitive to blue than to red.
I can look it up for you if need this.

Let me know more before you grade this answer..
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Suggested Courses
Course of the Month15 days, 17 hours left to enroll

741 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question