to convert PDF into Images. This works good for teh most files. But there is a problem with antialias (i think). When i zoom in the output image i. Well I’m trying to make the image’s edges soften so they don’t look sharp ( transparent background), and I can’t seem to get it to work. Have you tried setting -background Red -alpha Background? I suspect that the background color is defaulting to black, which is then being blurred with the red.

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The default is 1. The image sequence following the —write filename option is written out, and processing continues with the same image in its current state if there are additional options. Use a blur perhaps? Normally, when a format supports different subformats such as grayscale and truecolor, the encoder will try to choose an efficient subformat.

Anti-Aliasing — IM v6 Examples

The destination is replaced with the source when the source is lighter, otherwise it is left unchanged. Basically as most objects in IM are anti-aliased or read from a “JPG” format image filecolors near the edges of drawn objects are rarely the specific color that you are using flood fill to replace.

There are some exceptions: The images are tiled on the composite image with antialiae name of the image optionally appearing just below the individual tile. This option is useful if the image is of a known gamma but not set as an image attribute imwgemagick.

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Similarly, the y offset normally specifies the topmost row to remove, but if the —gravity option is present with SouthWestSouthor SouthEast gravity, it specifies the distance upward from the bottom edge of the image to the bottom row to remove. The default is 1. Specify the label font with -font.

Similarly, using -type TrueColorMatte will force the encoder to write an alpha channel even though the image is opaque, if the output format supports transparency. The angle given is the angle toward which the image is blurred.

Specify cluster threshold as the number of pixels in each cluster must exceed the the cluster threshold to be considered valid. Brightens the destination color to reflect the source color. When used for this purpose the offsets are always measured from the top left corner of the canvas and are not affected by the —gravity option.

Use list as the type and display searches the list of colormap types in top-to-bottom order until one is located. That is, the image is expanded or contracted to fit the width and height value while maintaining the aspect ratio of the image. If the first character of string isthe text is read from a file titled by the remaining characters in the string. If this option is omitted, the JPEG library will use its own default values.

As the value is increased, you can expect a smoother second derivative. This will create a 3-D effect. However, if the image is x, it is rotated by degrees.


The resultant color is always at least as light as either of the two constituent colors. Precede the image file name with to pipe to a system command.


This option indicates that the GetImage request used to obtain the image should be done on the root window, rather than directly on the specified window. That is the antilias people would consider the object is coming from. Use -colors to reduce the number of colors. Ghostscript makes the rasterization. Use this option to annotate an image with one or more graphic primitives. Previous Overwrite the image area with what was there prior to rendering the image.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Gamma is an exponent that ranges from 0. Use matte to the change anyialias pixel matte value to transparent.

The software is provided “as is”, without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. I’ve been working with this project since the start of the year and have progressed quite a way with converting between postscript-type files, namely PDFs.

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