VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, [5], 6, 7, 8, 9, 10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 19:18:46 10/04/02 Fri
Author: Suri
Subject: Problem Converting Image to B/W using TImageFormatTransform

I am having a problem converting True-color bitmap to a B/W using TImageFormatTransform while in 256-color video mode. (See Codes below). The actual image has the white background, but, the converted image will have a black-dithered background instead of white. I've tried with 32bit-color video mode and it will work fine. However, my client insists upon using 256-color video mode. I would like to know why it happens and if there is a way to, maybe manually manipulate the color pallette through ImageFormatTransform object.

lBmp := TBitmapGraphic.Create;
lFmt := TImageFormatTransform.Create;
//-- Assign from a True-Color TBitmap
lBmp.Assign(mImgSrc);
with lFmt do begin
ImageFormat := ifBlackWhite;
Quantize := True;
Dither := True;
Apply(lBmp);
end;
lFmt.Free;

My system Info:
OS: Windows 2000 SP3
Processor: Pentium III 600 with 512mb RAM
Video Card: ATI RADEON 7500

Regards,
Suri

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.