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mogrify(1)									       mogrify(1)

       mogrify - mogrify an image

       mogrify [ options ... ] file ...

       Mogrify	transforms an image or a sequence of images. These transforms include image scal-
       ing, image rotation, color reduction, and others. The transmogrified image overwrites  the
       original  image, unless an option such as -format causes the output filename to be differ-
       ent from the input filename.

       The graphics formats supported by mogrify are listed in ImageMagick(1).

       To convert all the TIFF files in a particular directory to JPEG, use:

	   mogrify -format jpeg *.tiff

       To convert a directory full of JPEG images to thumbnails, use:

	   convert -size 120x120 *.jpg -resize 120x120 +profile '*'

       In this example, "-i size 120x120" gives a hint to the JPEG decoder that  the  images  are
       going  to  be downscaled to 120x120, allowing it to run faster by avoiding returning full-
       resolution images.  The "-resize 120x120" specifies the desired dimensions of  the  output
       images.	 It  will  be  scaled so its largest dimension is 120 pixels.  The "+profile '*'"
       removes any ICM, EXIF, IPTC, or other profiles that might be  present  in  the  input  and
       aren't needed in the thumbnails.

       To  scale  an image of a cockatoo to exactly 640 pixels in width and 480 pixels in height,

	   mogrify -resize 640x480! cockatoo.miff

       Options are processed in command line order. Any option you specify on  the  command  line
       remains	in  effect for the set of images that follows, until the set is terminated by the
       appearance of any option or -noop.

       For a more detailed description of each option, see ImageMagick(1).

       -affine <matrix>
	      drawing transform matrix

	      remove pixel aliasing

       -background <color>
	      the background color

       -blur <radius>x<sigma>
	      blur the image with a gaussian operator

       -border <width>x<height>
	      surround the image with a border of color

       -bordercolor <color>
	      the border color

       -cache <threshold>
	      megabytes of memory available to the pixel cache

       -channel <type>
	      the type of channel

       -charcoal <factor>
	      simulate a charcoal drawing

       -colorize <value>
	      colorize the image with the pen color

       -colors <value>
	      preferred number of colors in the image

       -colorspace <value>
	      the type of colorspace

       -comment <string>
	      annotate an image with a comment

       -compress <type>
	      the type of image compression

	      enhance or reduce the image contrast

       -crop <width>x<height>{+-}<x>{+-}<y>{%}
	      preferred size and location of the cropped image

       -cycle <amount>
	      displace image colormap by amount

       -debug enable debug printout

       -delay <1/100ths of a second>
	      display the next image after pausing

       -density <width>x<height>
	      vertical and horizontal resolution in pixels of the image

       -depth <value>
	      depth of the image

	      reduce the speckles within an image

       -display <host:display[.screen]>
	      specifies the X server to contact

       -dispose <method>
	      GIF disposal method

	      apply Floyd/Steinberg error diffusion to the image

       -draw <string>
	      annotate an image with one or more graphic primitives

       -edge <radius>
	      detect edges within an image

	      emboss an image

       -encoding <type>
	      specify the font encoding

       -endian <type>
	      specify endianness (MSB or LSB) of output image

	      apply a digital filter to enhance a noisy image

	      perform histogram equalization to the image

       -fill <color>
	      color to use when filling a graphic primitive

       -filter <type>
	      use this type of filter when resizing an image

       -flip  create a "mirror image"

       -flop  create a "mirror image"

       -font <name>
	      use this font when annotating the image with text

       -format <type>
	      the image format type

       -frame <width>x<height>+<outer bevel width>+<inner bevel width>
	      surround the image with an ornamental border

       -fuzz <distance>{%}
	      colors within this distance are considered equal

       -gamma <value>
	      level of gamma correction

       -gaussian <radius>x<sigma>
	      blur the image with a gaussian operator

       -geometry <width>x<height>{+-}<x>{+-}<y>{%}{@} {!}{<}{>}
	      preferred size and location of the Image window.

       -gravity <type>
	      direction primitive  gravitates to when annotating the image.

       -help  print usage instructions

       -implode <factor>
	      implode image pixels about the center

       -interlace <type>
	      the type of interlacing scheme

       -label <name>
	      assign a label to an image

       -level <value>
	      adjust the level of image contrast

	      the line width for subsequent draw operations

       -list <type>
	      the type of list

       -loop <iterations>
	      add Netscape loop extension to your GIF animation

       -map <filename>
	      choose a particular set of colors from this image

       -mask <filename>
	      Specify a clipping mask

       -matte store matte channel if the image has one

       -mattecolor <color>
	      specify the matte color

       -median <radius>
	      apply a median filter to the image

       -modulate <value>
	      vary the brightness, saturation, and hue of an image

	      transform the image to black and white

	      replace every pixel with its complementary color

       -noise <radius|type>
	      add or reduce noise in an image

       -noop  NOOP (no option)

	      transform image to span the full range of color values

       -opaque <color>
	      change this color to the pen color within the image

       -page <width>x<height>{+-}<x>{+-}<y>{%}{!}{<}{>}
	      size and location of an image canvas

       -paint <radius>
	      simulate an oil painting

       -pen <color>
	      specify the pen color for drawing operations

       -pointsize <value>
	      pointsize of the Postscript, OPTION1, or TrueType font

       -profile <filename>
	      add ICM, IPTC, or generic profile  to image

       -quality <value>
	      JPEG/MIFF/PNG compression level

       -raise <width>x<height>
	      lighten or darken image edges

       -region <width>x<height>{+-}<x>{+-}<y>
	      apply options to a portion of the image

       -resize <width>x<height>{%}{@}{!}{<}{>}
	      resize an image

       -roll {+-}<x>{+-}<y>
	      roll an image vertically or horizontally

       -rotate <degrees>{<}{>}
	      apply Paeth image rotation to the image

       -sample <geometry>
	      scale image with pixel sampling

       -sampling_factor <horizontal_factor>x<vertical_factor>
	      sampling factors used by JPEG or MPEG-2 encoder and YUV decoder/encoder.

       -scale <geometry>
	      scale the image.

       -scene <value>
	      set scene number

       -seed <value>
	      pseudo-random number generator seed value

       -segment <cluster threshold>x<smoothing threshold>
	      segment an image

       -shade <azimuth>x<elevation>
	      shade the image using a distant light source

       -sharpen <radius>x<sigma>
	      sharpen the image

       -shave <width>x<height>
	      shave pixels from the image edges

       -shear <x degrees>x<y degrees>
	      shear the image along the X or Y axis

       -size <width>x<height>{+offset}
	      width and height of the image

       -solarize <factor>
	      negate all pixels above the threshold level

       -spread <amount>
	      displace image pixels by a random amount

       -stroke <color>
	      color to use when stroking a graphic primitive

       -strokewidth <value>
	      set the stroke width

       -swirl <degrees>
	      swirl image pixels about the center

       -texture <filename>
	      name of texture to tile onto the image background

       -threshold <value>
	      threshold the image

       -tile <filename>
	      tile image when filling a graphic primitive

	      transform the image

       -transparent <color>
	      make this color transparent within the image

       -treedepth <value>
	      tree depth for the color reduction algorithm

       -trim  trim an image

       -type <type>
	      the image type

       -units <type>
	      the type of image resolution

       -unsharp <radius>x<sigma>
	      sharpen the image with an unsharp mask operator

	      print detailed information about the image

       -view <string>
	      FlashPix viewing parameters

       -wave <amplitude>x<wavelength>
	      alter an image along a sine wave

	      For a more detailed description of each option, see ImageMagick(1).

       Use -segment to segment an image by analyzing the histograms of the color  components  and
       identifying  units  that are homogeneous with the fuzzy c-means technique. The scale-space
       filter analyzes the histograms of the three color components of the image and identifies a
       set  of	classes.   The	extents  of each class is used to coarsely segment the image with
       thresholding.  The color associated with each class is determined by the mean color of all
       pixels  within  the  extents  of  a particular class. Finally, any unclassified pixels are
       assigned to the closest class with the fuzzy c-means technique.

       The fuzzy c-Means algorithm can be summarized as follows:

       Build a histogram, one for each color component of the image.

       For each histogram, successively apply the scale-space filter and build an  interval  tree
       of  zero crossings in the second derivative at each scale.  Analyze this scale-space "fin-
       gerprint" to determine which peaks or valleys in the histogram are most predominant.

       The fingerprint defines intervals on the axis of the  histogram.  Each  interval  contains
       either  a  minima  or a maxima in the original signal. If each color component lies within
       the maxima interval, that pixel is considered "classified" and is assigned an unique class

       Any  pixel  that fails to be classified in the above thresholding pass is classified using
       the fuzzy c-Means technique. It is assigned to one of the classes discovered in	the  his-
       togram analysis phase.

       The fuzzy c-Means technique attempts to cluster a pixel by finding the local minima of the
       generalized within group sum of squared error objective function. A pixel is  assigned  to
       the closest class of which the fuzzy membership has a maximum value.

       For  additional information see: <bq>Young Won Lim, Sang Uk Lee, ``On The Color Image Seg-
       mentation Algorithm Based on the Thresholding and the Fuzzy c-Means Techniques'',  Pattern
       Recognition, Volume 23, Number 9, pages 935-952, 1990.</bq>

	      To get the default host, display number, and screen.

       display(1), animate(1), identify(1), montage(1), convert(1), ImageMagick(1), composite(1)

       Copyright (C) 2002 ImageMagick Studio

       Permission is hereby granted, free of charge, to any person obtaining a copy of this soft-
       ware and associated documentation files ("ImageMagick"), to deal  in  ImageMagick  without
       restriction, including without limitation the rights to use, copy, modify, merge, publish,
       distribute, sublicense, and/or sell copies of ImageMagick, and to permit persons  to  whom
       the ImageMagick is furnished to do so, subject to the following conditions:

       The  above  copyright notice and this permission notice shall be included in all copies or
       substantial portions of ImageMagick.

       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.In no event shall ImageMagick Studio be liable for any  claim,
       damages	or  other liability, whether in an action of contract, tort or otherwise, arising
       from, out of or in connection with ImageMagick or the use or other dealings  in	ImageMag-

       Except  as  contained  in this notice, the name of the ImageMagick Studio LLC shall not be
       used in advertising or otherwise to promote the sale, use or other dealings in ImageMagick
       without prior written authorization from the ImageMagick Studio.

	John Cristy, ImageMagick Studio LLC,
       Glenn Randers-Pehrson, ImageMagick Studio LLC.

ImageMagick			    Date: 2002/02/15 01:00:00			       mogrify(1)
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