you also need to rewrite the entire Image dictionary as well with new
values for colorspace, etc.
Leonard
On Nov 25, 2008, at 7:02 PM, Rick Carback wrote:
Klas,
You should be able to read the bytes and convert them.
Something like this should work (written on the fly, there might be
mistakes):
Image i = ...
byte[] b = i.getRawData();
byte[] grayscale = new byte[b.length%3];
int k = 0;
for (int j = 0; j < b.length; j+=3) {
//Y = 0.3*R + 0.59*G + 0.11*B
grayscale[k] = (byte)(.3*b[j]+.56*b[j+1]+.11*b[j+2]);
}
Image grayscaleImage = Image.getInstance(i.getWidth(),
i.getHeight(), 1, 8, grayscale);
....
-R
On Tue, Nov 25, 2008 at 7:24 AM, Klas Lindbäck
<[EMAIL PROTECTED]> wrote:
There has been no reply to my question 5 days ago on converting a PDF
containing an image with RGB color
to grayscale. Am I correct to assume that there is no easy way to do
this using iText?
Cheers,
Klas
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