ImageMagick - 笔记整理 (草稿)

Office: ImageMagick Example: Usage

演示: display

convert ... png:- | display

内部图像: logo:

-resize WxH

convert Tachikoma.png -resize 200x100! Tachikoma.resize.png
display Tachikoma.resize.png
identify Tachikoma.resize.png

-crop | -trim | -shave (WxH+x+y)

convert Tachikoma.png -crop 200x200+300+300 png:- \
    | display

纵向 : -append

convert Tachikoma.png -crop 200x200+300+300 \
        tachikoma.png \
        -append png:- \
    | display

横向 +append

convert tachikoma.png -crop 300x300+300+0  \
        \( tachikoma.png -crop 300x300+0+0 \)  \
        +append png:- \
    | display

-composite

convert Tachikoma.png \
        \( smileman.png -geometry 100x100+10+10 \) \
        -composite png:- \
    | display

-rotate Degree 和 -flip(上下) -flop(左右)

convert Tachikoma.resize.png \
        -rotate 45 \
        -flip \
        png:- \
    | display

边框 : -frame WxH | -bordercolor gray -border WxH

convert Tachikoma.png \
        -bordercolor gray -border 50x5 \
        png:- \
    | display

文字

• Draw Text on Existing Canvas : -draw "…"

  convert Tachikoma.png \
          -font "/System/Library/Fonts/PingFang.ttc" \
          -fill pink -pointsize 30 \
          -draw "text 10,50 '绘制的文字'" \
          -fill yellow -pointsize 60 \
          png:- \
      | display
  

  • Graphy

        convert -size 320x120 xc:lightblue \
                -draw "fill tomato  circle 250,30 310,30 \
                       fill limegreen  circle 55,75 15,80 \
                       font Candice  font-size 72  decorate UnderLine \
                       fill dodgerblue  stroke navy  stroke-width 2 \
                       translate 10,110 rotate -15 text 0,0 ' Anthony '" \
                png:- \
            | display
    

• Annotate : -annotate {SlewX}x{SlewY}+{X}+{Y} "…"

  convert -size 320x100 xc:lightblue -undercolor dodgerblue \
          -font Candice -pointsize 72 \
          -tile gradient:blue-red \
          -annotate 350x350+20+90 'Anthony' \
          png:- \
      | display
  

• Label : label:

  convert -background lightblue -fill blue  -font Candice \
          -size 300x200 -pointsize 30 \
          -gravity center \
          -strokewidth 10 -stroke white \
          label:'Label\nHello Label' \
          png:- \
      | display
  

• Caption : Word Wrapped

  convert -background lightblue -undercolor blue \
          -fill white  -font Candice \
          -size 300x -pointsize 30 \
          -gravity center \
          caption:'This is a very long caption line.' \
          png:- \
      | display
  

• Text Attributes
  • -pointsize
    • 1 point is 1/72 inches
    • 不指定 则 Auto fit size
  • -density 90 (ppi)
  • -size Wx 则 Auto fit height 反之亦然
  • -fill | -tile
  • 从文件 : label:@/path
  • 从标准输入 : label:@-
    • Ex. echo "Anthony" | convert label:@-

  • -strokewidth 2 -stroke blue

    convert -background black -fill white -font Candice \
            -size x200 \
            -strokewidth 8 -stroke white \
            label:'A' \
            png:- \
        | display
    

  • Inter-character Kerning : -kerning 1
  • Inter-Word Spacing : -interword-spacing 1
  • Inter-Line Spacing : -interline-spacing 5

• Pango : Basic Formatted Text

  convert -background lightblue -size 150 \
          -define "pango:justify=true" \
          pango:"Contributions to IM Examples are welcome." \
          png:- \
      | display
  

  • Auto word wrap (or char wrap for chinese)
  • -define pango:justify=true

generate barcodes (font: http://www.idautomation.com/fonts/free/)

convert -pointsize 16 \
        -font IDAutomationHC39M \
        -bordercolor white -border 5x5 \
        label:'*314-76*' \
        png:- \
    | display

Yin Yang

convert -pointsize 72 -density 288 \
        -font Symbola \
        label:'☯' \
        -rotate 270 \
        png:- \
    | display

特效

• 加噪声 -noise 3
• 油画 ： -paint 4
• 内爆 : -implode 1
• 胶片曝光 : -solarize 42
• 铅笔 : -charcoal 2
• 散射 (毛玻璃) : -spread 30
• 高斯模糊 : -blur 80 (80x5: 5 : Sigma )
• 漩涡 : -swirl 67
• [凸起|凹陷] : [-|+]raise 5x5 ()
• 锐化 : -sharpen 2

• 示例

  convert Tachikoma.png \
          -swirl 80 \
          -frame 30x30 +raise 10x10 \
          png:- \
      | display
  

颜色

• 反色 ： -negate
• 黑白 ： -monochrome
• 着色 ： -colorize [255 | 100/0/125]
• 填色 : -opaque khaki
• 透明 : -transparent
  • 移除 : -flatten
• -modulate brightness,saturation,hue

• 示例

  convert Tachikoma.png \
          -transparent white  \
          png:- \
      | display