Thanks, Lachezar. I think something else is going on; the images may be just the most obvious issue. My black (Color.BLACK) text is picking as RGB 5,6,7 rather than 0,0,0. A filled rectangle is also showing a color shift.
barColor=new Color(179,26,51); // <--- renders as 181,52,58 contentStream.setNonStrokingColor(barColor); contentStream.fillRect( graphLeft, tableRowY, graphSize * barPercent, Table.BAR_HEIGHT); On Tue, Sep 10, 2013 at 2:25 PM, Lachezar Dobrev <[email protected]> wrote: > Possibly the images get compressed as JPEG or similar. > I've had problems with other PDF generators too, occasionally when > adding a Bar Code to the PDF it gets severely distorted. As it turns > out the encoder compressed the image using JPEG, which results in > severe errors in the image. > > 2013/9/10 Buzzy Spain <[email protected]>: > > Hi all, > > > > I am trying to understand why the images I am writing into a pdf end up > > with different rgb values than the input images. > > > > As an example, for one image, if I open the png file in MS Paint and use > > the color picker I get RGB of (179,26,51). After writing that same image > > to a page's content stream, saving the document, and then opening it in > > Adobe Acrobat, if I use a color picker tool the RGB value is (181, 52, > 58). > > Other images have significant shifts in other channels. > > > > Can anyone provide any tips on how to address this? > > > > Thanks, > > Buzzy > > > > ps. Code for adding images to document is below: > > > > BufferedImage image = ImageIO.read(new File("colorLegend.png")); > > PDJpeg xImage = new PDJpeg(document, image, quality); > > //PDPixelMap xImage = new PDPixelMap(document, image); // <--- doesn't > > seem to help > > contentStream.drawXObject(xImage, x, y, width, height); >
