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ex) @@foo.gif@@
9 ¹ø ±Û: [images] convert GIF/JPG/PNG/BMP/EPS/...
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convert command

JPG -> GIF
JPG -> JPG
JPG -> PNG
JPG -> BMP
JPG -> EPS
...

GIF -> GIF
GIF -> JPG
GIF -> PNG
GIF -> BMP
GIF -> EPS
...

PNG -> GIF
PNG -> JPG
PNG -> PNG
PNG -> BMP
PNG -> EPS
...

BMP -> GIF
BMP -> JPG
BMP -> PNG
BMP -> BMP
BMP -> EPS
...

*ÁÖ¿ä ¿É¼Ç)
-colors value   : color °ª
-depth value    : À̹ÌÁö depth
-geometry geometry : °¡·Îx¼¼·Î Æø º¯°æÇÒ °æ¿ì
-scale geometry : '-geometry' ¿É¼Ç°ú ºñ½ÁÇÔ
-size geometry  : '-geometry' ¿É¼Ç°ú ºñ½ÁÇÔ ex) 150x100
-verbose        : detail infomation

ex)
$ convert -geometry 70% xxx.bmp xxx.jpg // °¡·Î,¼¼·Î Å©±â¸¦ 70%·Î ÁÙÀÓ

À̹ÌÁö »Ó¸¸ ¾Æ´Ï¶ó ´Ù¸¥ Æ÷¸Ë Áö¿ø...

# convert --help

Version: @(#)ImageMagick 5.2.2 00/08/15 Q:8 cristy@mystic.es.dupont.com
Copyright: Copyright (C) 2000 ImageMagick Studio

Usage: convert [options ...] file [ files... ] output_file

Where options include:
  -adjoin              join images into a single multi-image file
  -affine matrix       drawing transform matrix
  -antialias           remove pixel-aliasing
  -append              append an image sequence
  -average             average an image sequence
  -blur order          apply a filter to blur the image
  -border geometry     surround image with a border of color
  -bordercolor color   border color
  -box color           color for annotation bounding box
  -cache threshold     megabytes of memory available to the pixel cache
  -charcoal order      simulate a charcoal drawing
  -coalesce            merge a sequence of images
  -colorize value      colorize the image with the fill color
  -colors value        preferred number of colors in the image
  -colorspace type     alternate image colorspace
  -comment string      annotate image with comment
  -compress type       type of image compression
  -contrast            enhance or reduce the image contrast
  -crop geometry       preferred size and location of the cropped image
  -cycle amount        cycle the image colormap
  -delay value         display the next image after pausing
  -deconstruct         break down an image sequence into constituent parts
  -density geometry    vertical and horizontal density of the image
  -depth value         depth of the image
  -despeckle           reduce the speckles within an image
  -display server      obtain image or font from this X server
  -dispose method      GIF disposal method
  -dither              apply Floyd/Steinberg error diffusion to image
  -draw string         annotate the image with a graphic primitive
  -edge order          apply a filter to detect edges in the image
  -emboss order        emboss an image
  -enhance             apply a digital filter to enhance a noisy image
  -equalize            perform histogram equalization to an image
  -fill color          color to use when filling a graphic primitive
  -filter type         use this filter when resizing an image
  -flip                flip image in the vertical direction
  -flop                flop image in the horizontal direction
  -font name           X11 font for displaying text
  -frame geometry      surround image with an ornamental border
  -fuzz distance       colors within this distance are considered equal
  -gamma value         level of gamma correction
  -geometry geometry   perferred size or location of the image
  -gaussian geometry   gaussian blur an image
  -gravity type        vertical and horizontal text placement
  -implode amount      implode image pixels about the center
  -intent type         Absolute, Perceptual, Relative, or Saturation
  -interlace type      None, Line, Plane, or Partition
  -label name          assign a label to an image
  -layer type          Red, Green, Blue, Matte
  -linewidth value     width of line in pixels
  -label name          assign a label to an image
  -loop iterations     add Netscape loop extension to your GIF animation
  -map filename        transform image colors to match this set of colors
  -matte               store matte channel if the image has one
  -median order        apply a median filter to the image
  -modulate value      vary the brightness, saturation, and hue
  -monochrome          transform image to black and white
  -morph value         morph an image sequence
  -mosaic              create an mosaic from an image sequence
  -negate              replace every pixel with its complementary color 
  -noise               add or reduce noise in an image
  -normalize           transform image to span the full range of colors
  -opaque color        change this color to the fill color
  -page geometry       size and location of an image canvas
  -paint radius        simulate an oil painting
  -ping                efficiently determine image characteristics
  -pointsize value     pointsize of Postscript font
  -preview type        image preview type
  -profile filename    add ICC or IPTC information profile to image
  -quality value       JPEG/MIFF/PNG compression level
  -raise value         lighten/darken image edges to create a 3-D effect
  -region geometry     apply options to a portion of the image
  -roll geometry       roll an image vertically or horizontally
  -rotate degrees      apply Paeth rotation to the image
  -sample geometry     scale image with pixel sampling
  -scale geometry      resize image
  -scene value         image scene number
  -segment values      segment an image
  -seed value          pseudo-random number generator seed value
  -shade degrees       shade the image using a distant light source
  -sharpen order       apply a filter to sharpen the image
  -shear geometry      slide one edge of the image along the X or Y axis
  -size geometry       width and height of image
  -solarize threshold  negate all pixels above the threshold level
  -spread amount       displace image pixels by a random amount
  -stroke color        color to use when stoking a graphic primitive
  -swirl degrees       swirl image pixels about the center
  -texture filename    name of texture to tile onto the image background
  -threshold value     threshold the image
  -transparent color   make this color transparent within the image
  -treedepth value     depth of the color storage_class tree
  -units type          Inch, Centimeter, or Undefined
  -verbose             print detailed information about the image
  -view                FlashPix viewing transforms
  -wave geometry       alter an image along a sine wave

By default, the image format of `file' is determined by its magic
number.  To specify a particular image format, precede the filename
with an image format name and a colon (i.e. ps:image) or specify the
image type as the filename suffix (i.e. image.ps).  Specify 'file' as
'-' for standard input or output.

Here is a list of image formats recognized by ImageMagick.  Mode 'rw+'
means ImageMagick can read, write, and save more than one image of a
sequence to the same blob or file.

    Format  Mode  Description
-------------------------------------------------------------------------
      8BIM*  rw-  Photoshop resource format
       AVI*  r--  Audio/Visual Interleaved
       AVS*  rw+  AVS X image
       BMP*  rw+  Microsoft Windows bitmap image
     BMP24*  rw+  Microsoft Windows 24-bit bitmap image
       DIB*  rw+  Microsoft Windows bitmap image
     CACHE*  rw+  Magick Persistent Cache image format
      CMYK*  rw-  Raw cyan, magenta, yellow, and black bytes
       DCM*  r--  Digital Imaging and Communications in Medicine image
       EPT*  -w-  Adobe Encapsulated PostScript with TIFF preview
       FAX*  rw+  Group 3 FAX
        G3*  rw-  Group 3 FAX
      FITS*  rw-  Flexible Image Transport System
       FPX*  rw-  FlashPix Format
       GIF*  rw+  CompuServe graphics interchange format
     GIF87*  rw-  CompuServe graphics interchange format (version 87a)
      GRAY*  rw+  Raw gray bytes
 GRADATION*  r--  Gradual passing from one shade to another
       HDF   rw+  Hierarchical Data Format
 HISTOGRAM*  -w-  Histogram of the image
       HTM*  -w-  Hypertext Markup Language and a client-side image map
      HTML*  -w-  Hypertext Markup Language and a client-side image map
     SHTML*  -w-  Hypertext Markup Language and a client-side image map
       ICM*  rw-  ICC Color Profile
       ICO*  r--  Microsoft icon
      ICON*  r--  Microsoft icon
      IPTC*  rw-  IPTC Newsphoto
       BIE*  rw-  Joint Bi-level Image experts Group interchange format
       JBG*  rw+  Joint Bi-level Image experts Group interchange format
      JBIG*  rw+  Joint Bi-level Image experts Group interchange format
    JPEG24*  rw-  Joint Photographic Experts Group JFIF format
      JPEG*  rw-  Joint Photographic Experts Group JFIF format
       JPG*  rw-  Joint Photographic Experts Group JFIF format
     LABEL*  r--  Text image format
   GRANITE*  rw-  Granite texture
         H*  rw-  Internal format
      LOGO*  rw-  ImageMagick Logo
  NETSCAPE*  rw-  Netscape 216 color cube
       MAP*  rw-  Colormap intensities and indices
     MATTE*  -w+  MATTE format
  IMPLICIT*  ---  
      MIFF*  rw+  Magick image format
      MONO*  rw-  Bi-level bitmap in least-significant-byte first order
       MTV*  rw+  MTV Raytracing image format
       MVG*  r--  Magick Vector Graphics
      NULL*  r--  Constant image of uniform color
       PCD*  rw-  Photo CD
      PCDS*  rw-  Photo CD
       PCL*  rw-  Page Control Language
       DCX*  rw+  ZSoft IBM PC multi-page Paintbrush
       PCX*  rw-  ZSoft IBM PC Paintbrush
       PDB*  r--  Pilot Image Format
      EPDF*  rw-  Encapsulated Portable Document Format
       PDF*  rw+  Portable Document Format
       PCT*  rw-  Apple Macintosh QuickDraw/PICT
      PICT*  rw-  Apple Macintosh QuickDraw/PICT
    PICT24*  rw-  24-bit Apple Macintosh QuickDraw/PICT
       PIX*  r--  Alias/Wavefront RLE image format
    PLASMA*  r--  Plasma fractal image
       MNG*  rw+  Multiple-image Network Graphics
       PNG*  rw-  Portable Network Graphics
        P7*  rw+  Xv thumbnail format
       PBM*  rw+  Portable bitmap format (black and white)
       PGM*  rw+  Portable graymap format (gray scale)
       PNM*  rw+  Portable anymap
       PPM*  rw+  Portable pixmap format (color)
   PREVIEW*  -w-  Show a preview an image enhancement, effect, or f/x
       EPI*  rw-  Adobe Encapsulated PostScript Interchange format
       EPS*  rw-  Adobe Encapsulated PostScript
      EPSF*  rw-  Adobe Encapsulated PostScript
      EPSI*  rw-  Adobe Encapsulated PostScript Interchange format
        PS*  rw+  Adobe PostScript
      EPS2*  -w-  Adobe Level II Encapsulated PostScript
       PS2*  -w+  Adobe Level II PostScript
       PS3*  -w+  Adobe Level III PostScript
       PSD*  rw-  Adobe Photoshop bitmap
       PWP*  r--  Seattle Film Works
       RGB*  rw+  Raw red, green, and blue bytes
      RGBA*  rw+  Raw red, green, blue, and matte bytes
       RLA*  r--  Alias/Wavefront image
       RLE*  r--  Utah Run length encoded image
       SCT*  r--  Scitex HandShake
       SGI*  rw+  Irix RGB image
   STEGANO*  r--  Steganographic image
       RAS*  rw+  SUN Rasterfile
       SUN*  rw+  SUN Rasterfile
       SVG*  r--  Scalable Vector Gaphics
       XML*  r--  Scalable Vector Gaphics
       ICB*  rw+  Truevision Targa image
       TGA*  rw+  Truevision Targa image
       VDA*  rw+  Truevision Targa image
       VST*  rw+  Truevision Targa image
      PTIF   rw+  Pyramid encoded TIFF
       TIF   rw+  Tagged Image File Format
      TIFF   rw+  Tagged Image File Format
    TIFF24   rw+  24-bit Tagged Image File Format
      TILE*  r--  Tile image with a texture
       TIM*  r--  PSX TIM
       TTF*  r--  TrueType font
      TEXT*  rw+  Raw text
       TXT*  rw+  Raw text
       UIL*  -w-  X-Motif UIL table
       PAL*  rw-  16bit/pixel interleaved YUV
      UYVY*  rw-  16bit/pixel interleaved YUV
     VICAR*  rw-  VICAR rasterfile format
       VID*  r--  Visual Image Directory
      VIFF*  rw+  Khoros Visualization image
        XV*  rw+  Khoros Visualization image
      WBMP*  rw-  Wireless Bitmap (level 0) image
       WPG*  r--  Word Perfect Graphics
         X*  rw-  X Image
       XBM*  rw-  X Windows system bitmap (black and white)
        XC*  r--  Constant image uniform color
        PM*  rw-  X Windows system pixmap (color)
       XPM*  rw-  X Windows system pixmap (color)
       XWD*  rw-  X Windows system window dump (color)
       YUV*  rw-  CCIR 601 4:1:1

* native blob support


ImageMagick uses these delegates to read or write image formats it does not
directly support:

Decode-Tag   Encode-Tag  Delegate
-------------------------------------------------------------------------
          <= compress    |/usr/bin/compress
          <= show        /usr/X11R6/bin/display
          <= zip         |/bin/gzip
    browse =>            /usr/bin/netscape
      bzip =>            |/usr/bin/bzip2
       cgm =>            ralcgm
  compress =>            |/usr/bin/uncompress
       dot =>            dot
       dvi =>            /usr/bin/dvips
      edit =>            /usr/bin/X11/xterm
       emf =>            wmftogif
       eps<=>pdf         /usr/bin/gs
       eps<=>ps          /usr/bin/gs
      file =>            /usr/bin/wget
       fig =>            /usr/bin/X11/fig2dev
       ftp =>            /usr/bin/wget
      gplt =>            /bin/echo
  gs-color =>            /usr/bin/gs
   gs-mono =>            /usr/bin/gs
      hpgl =>            hp2xx
       htm =>            html2ps
      html =>            html2ps
      http =>            /usr/bin/wget
      ilbm =>            /usr/bin/ilbmtoppm
       man =>            /usr/bin/groff
       mpg =>            mpeg2decode
       m2v =>            mpeg2decode
       pdf<=>eps         /usr/bin/gs
       pdf<=>ps          /usr/bin/gs
       pgp =>            pgpv
       pnm<= ilbm        /usr/bin/ppmtoilbm
       pnm<= launch      /usr/bin/gimp
       pnm<= win         /usr/X11R6/bin/display
       pov =>            povray
        ps<=>eps         /usr/bin/gs
        ps<=>pdf         /usr/bin/gs
        ps<= print       lpr
       rad =>            ra_ppm
      rgba<= rle         /usr/X11R6/bin/mogrify
      scan =>            /usr/bin/scanimage
     shtml =>            html2ps
       txt<=>ps          /usr/bin/enscript
       wmf =>            wmftogif
       xcf =>            /usr/bin/xcftopnm
       yuv<= m2v         mpeg2encode
       yuv<= mpg         mpeg2encode
       zip =>            |/bin/gzip


 
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