Black and white colors?

[snoopdoug1]

Anyone know a way to make a windows xp display black and white instead of in color? I'd want all applications to be black and white as well.

The reason I need to do this is because we've got a graphics application here at work(internally developed by another group) that doesn't do black and white. So to do black and white we have to read the whole display buffer in, do pixel operations to get it to black+white, then write it back out. The end product is too choppy from this reading/manipulating/writing the buffer... so if we could make the display just black + white we wouldn't have to worry about this.


edit: 2Xtreme21 found this... looks to be impossible link

 

[Kyanzes]

I really have no clue at all, but you could lose nothing by sending a mail to the OmegaDrivers guys. Worst case you won't get an answer.

 

[xtknight]

No amount of linear gamma adjustment will allow that. That means, no one setting will allow reliable grayscale output for any image. You need an algorithm to convert a color image into a grayscale one.

Actually, reducing saturation in the NVIDIA/ATI color correction control panel should do it. I'm not sure whether or not that's available in Desktop mode. If you make the output black and white, the image is still going to be color underneath BTW. I don't quite follow you on why the end product is choppy though. Choppy vs. what?

Do you want black and white (i.e. Floyd-Steinberg) or grayscale?

 

[snoopdoug1]

grayscale, and not black and white. Right now we are using an algorithm to convert the color image to grayscale, but it makes the video output of the program choppy(running that algorithm on a 1280x1024 screen at 40 hertz isn't cheap). Does that make more sense? The video shouls be smoother... it's a visualzation tool. The moving objects on the screen jump from one spot to the next, and it's not a smooth transition.

 

[xtknight]

Would it be feasible to perform the conversion at once and then play it back later?