[reportlab-users] embedded png image quality

[James Crone]

Hi,

I`m embedding a PNG image (a map rendered from MapServer) into a pdf 
using reportlab with:

import Image
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import portrait,A4

myImage = Image.open("C:/input_map_image.png")
bgsMapCanvas = canvas.Canvas("C:/output_map_doc.pdf",pagesize=portrait(A4))
bgsMapCanvas.setPageCompression(0)
bgsMapCanvas.drawInlineImage(myImage,0,0,myImage.size)
bgsMapCanvas.showPage()
bgsMapCanvas.save()


in the resulting pdf the embedded PNG image has been compressed 
resulting in a loss of image quality and a fuzzy map document :-( . Is 
it possible to prevent (PNG) images from being compressed when I add 
them to a document?

Thanks in advance,

James

-- 
James Crone

Geo Data and Research Services
EDINA
Causewayside House,
160 Causewayside,
Edinburgh,
Scotland,
United Kingdom
EH9 1PR

tel: +44 (0)131 651 1859
http://edina.ac.uk

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