![]() ![]() This code works, but is incredibly slow: $file = "./YORK. This seems to work fine for me on IM 6.8.0.4 Q16Ĭonvert logo: -transparent white logo.pdfĬonvert logo_trans.pdf -background green -flatten logo_green.Working code first - explanation to follow: I am not sure what is the issue with this file?īack to the transparency issue. Identify: no decode delegate for this image format `vector.pdf' error/constitute.c/ReadImage/550. Somehow I found the command which does what I wanted exactly: For images which are already scaled and compressed: convert input.jpeg -bordercolor white -border 13 ( +clone -background black -shadow 80x3+2+2 ) +swap -background white -layers merge +repage output.jpg. Then cd to the folder holding your images. options: >convert -background white testimage.eps testimage.gif >convert -fill white testimage.eps testimage.gif >convert -colorspace RGB testimage. I can get the desired result using os.system and the -flatten parameter as shown below. Create a new output directory to hold the colorized files. Im trying to convert from PDF to JPG using PythonMagick, but I cant find a way to set the background color, which by default is changed from transparent to black. Identify: unable to load module `/usr/local/lib/ImageMagick-6.8.0/modules-Q16/coders/pdf.la': file not found error/module.c/OpenModule/1278. With ImageMagick, you can process a whole folder of images at one time with mogrify rather than convert if you want all the same color. User, snibgo, used -alpha remove as the operator, which should work to change the transparency to some color.Īlso I downloaded the vector.pdf and IM could not open it on my Mac OSX Snow Leopard IM 6.8.0.4 Q16, though my browser shows it fine. convert check.png -alpha off -threshold 50. So in ImageMagick 6, you just have to do simple thresholding. However I have a script, otsuthresh that will do that At my web site. Input: magick check.png -alpha off -auto-threshold otsu x.png Result: There is no built-in equivalent in ImageMagick 6. ![]() It needs an operator to act upon it, such as -flatten, etc. With ImageMagick 7, you can do Otsu thresholding. I am running Fedora 16, recently upgraded from F14. T16:24:54+01:00 I know that this has been addressed before, but I cannot find a solution for my issue. To make black the transparency colour remove the -negate flag. This will make white the transparent colour. lessen (or intensify) when adding noise to an image -background color background. You can do this in two steps: convert image.png -colorspace HSB -separate -negate imagemask.png convert image.png -alpha Off > imagemask.png -compose CopyOpacity -composite > PNG32:imagealpha.png. background is a setting and does nothing by itself. Authentication code: 67789 Pdf->jpg black background SOLVED by Jacob K. The convert program is a member of the ImageMagick(1) suite of tools. ![]() Whugemann wrote:Convert seems to be unimpressed by the option -background, no matter whether you place it before or after the PDF. First run this to get edges: convert aa.png -bordercolor white -border 1x1 -alpha set -channel RGBA -fuzz 20 -fill none -floodfill +0+0 white -shave 1x1 aa.png. ![]()
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