Imagemagick常用指令
(ImageMagick--蓝天白云)
convert 转换图像格式和大小,模糊,裁剪,驱除污点,抖动,临近,图片上画图片,加入新图片,生成缩略图等。
identify 描述一个或较多图像文件的格式和特性。
composite 根据一个图片或多个图片组合生成图片
举个例子
convert +profile '*' [src]{file}.{ext} -quality 80 -resize '280x140^>' -gravity Center -crop 280x140+0+0 +repage [out]{file}_280x140.{ext}
把一张图片按80的质量去压缩(jpg的压缩参数),同时按图片比例非强制缩放成不超过280x140的图片.居中裁剪280x140,去掉图片裁减后的空白和图片exif信息,通常这种指令是为了保证图片大小正好为280x140
下面对各个指令的含义简要说明
-quality 图片质量,jpg默认99,png默认75
-resize
100x100 高度和宽度比例保留最高值,高比不变
100x100^ 高度和宽度比例保留最低值,宽高比不变
100x100! 宽度和高度强制转换,忽视宽高比
100x100> 更改长宽,当图片长或宽超过规定的尺寸
100x100< 更改长宽 只有当图片长宽都超过规定的尺寸
100x100^> 更改长宽,当图片长或宽超过规定的尺寸。高度和宽度比例保留最低值
100x100^< 更改长宽,只有当图片长宽都超过规定的尺寸。高度和宽度比例保留最低值
100 按指定的宽度缩放,保持宽高比例
x100 按指定高度缩放,保持宽高比
-gravity NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast截取用的定位指令,定位截取区域在图片中的方位
-crop 200x200+0+0 截取用的截取指令 ,在用定位指令后,按后两位的偏移值偏移截取范围左上角的像素后,再按前两位的数值,从左上角开始截取相应大小的图片
+repage 去掉图片裁减后的空白
-dissolve 30 设定组合图片透明度dissolve示例
+/-profile * 去掉/添加图片exif信息
下面记录下一些比较复杂一点的指令:
convert +profile '*' [src]{file}.{ext} -quality 90 -resize '700>' /data/tony/watermark_1.png -gravity southeast -compose Dissolve -composite [out]{file}_1024x1024.{ext}
convert +profile '*' [src]{file}.{ext} /data/watermark_1.png -gravity southeast -geometry +10+10 -composite [src]{file}.{ext}
convert +profile '*' [src]{file}.{ext} -coalesce -resize '950x135>' [out]{file}_950x135.{ext}
convert +profile '*' [src]{file}.{ext} -resize '650x500>' miff:- | composite +profile '*' -dissolve 30 -gravity southeast /data/tony/watermark_1.png - [out]{file}_650x500.{ext}
convert [src]{file}.{ext} -quality 80 -resize '190>' -background white -gravity center -extent 190x +repage [out]{file}_width190.{ext}
【/bin/sh^M: bad interpreter: 没有那个文件或目录】
vim filename
然后用命令
:set ff? #可以看到dos或unix的字样. 如果的确是dos格式的。
然后用
:set ff=unix #把它强制为unix格式的, 然后存盘退出。
###############################################
shell 除法计算
shell计算中使用除法,基本默认上都是整除。
比如:
num1=2
num2=3
num3=`expr $num1 / $num2`
这个时候num3=0 ,是因为是因为expr不支持浮点除法
解决的方法:
num3=`echo "scale=2; $num1/$num2" | bc`
使用bc工具,sclae控制小数点后保留几位
还有一种方法
awk 'BEGIN{printf "%.2f\n",’$num1‘/’$num2‘}'
如果用百分比表示
awk 'BEGIN{printf "%.2f%\n",(’$num1‘/’$num2‘)*100}'
##############################################
convert +profile '*' -size 950x135 xc:#ffffff [src]{file}.{ext} -resize 950x135 -gravity center -compose Src-over -composite [out]{file}_950x135.{ext}
解读:该指令会把gif的动态图拆分成好几张图,
-coalesce
完全定义一个GIF动画序列的每一帧的外观,形成“电影胶片”动画
根据它的-处置元数据覆盖各图像中的图像序列,以再现一个动画中的动画序列中的每个点的外观。有的图片应该是相同的大小,并且为动画继续如预期般GIF动画的工作分配适当的GIF处理设置。这样的帧更容易查看和比高度优化的GIF图像叠加处理。
该动画可以重新优化使用层法“优化”处理后,虽然没有保证恢复的GIF动画优化是比原来更好。
##################################################
gif拿到的只是最后一帧的数据,所以gif的图片在width和height值上有出入
convert +profile '*' tly2.gif -resize "600>" tly2_600.gif
C:\>identify tly2.gif
tly2.gif[0] GIF 341x186 341x186+0+0 8-bit sRGB 256c 191KB 0.000u 0:00.003
tly2.gif[1] GIF 194x173 341x186+128+13 8-bit sRGB 256c 191KB 0.000u 0:00.010
tly2.gif[2] GIF 192x175 341x186+130+11 8-bit sRGB 256c 191KB 0.000u 0:00.013
tly2.gif[3] GIF 80x177 341x186+131+9 8-bit sRGB 256c 191KB 0.000u 0:00.016
...
tly2.gif[30] GIF 164x175 341x186+122+11 8-bit sRGB 256c 191KB 0.000u 0:00.094
tly2.gif[31] GIF 145x172 341x186+122+14 8-bit sRGB 256c 191KB 0.000u 0:00.097
tly2.gif[32] GIF 195x167 341x186+122+19 8-bit sRGB 256c 191KB 0.000u 0:00.100
tly2.gif[33] GIF 196x174 341x186+121+12 8-bit sRGB 256c 191KB 0.000u 0:00.105
一、crop_center.sh
如果原图宽>高:按宽*size/高缩放; 如果原图宽<高:按高*size/宽缩放; 并居中裁剪size*size

1#!/bin/bash 2 3export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin 4 5filename=$1 6filename2=$2 7size=$3 8resize="70" 9 10wh=($(/usr/local/bin/identify -format "%w %h " $1)) 11 12if [ ${wh[0]} -gt ${wh[1]} ] 13then 14resize=$(echo "${wh[0]}*$size/${wh[1]}+1" | bc) 15else 16resize=$(echo "${wh[1]}*$size/${wh[0]}+1" | bc) 17fi 18 19/usr/local/bin/convert +profile "*" -quality 75 -resize ${resize}x${resize} $filename $filename2 20 21/usr/local/bin/convert +profile "*" -gravity Center -crop ${size}x${size}+0+0 $filename2 $filename2

使用范例:/usr/local/bin/crop_center.sh [src]{file}.{ext} [out]{file}_small.{ext} 100
二、tony-convert-1.sh
原图按1024x1024>等比缩放,并打水印于右下角;如果宽高都小于300,则直接使用原图

1#!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 2 ] ; then 5 echo "Usage: tony-convert-1.sh [source path] [dest path]" 6 echo "Example: ./tony-convert-1.sh src/1234.jpg out/1234_100x200.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$2" 12 13index1=`expr index "${srcFile}" /` 14index2=`expr index "${srcFile}" .` 15file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 16ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 17 18#identify image num 19picCount=`/usr/local/sbin/bin/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 20echo animate pictures: ${picCount} 21 22if [ ${picCount} -gt 1 ] ; then 23 echo "No handle for animate pictures" 24 cp ${srcFile} ${dstFile} 25 exit 0 26fi 27 28#identify image size 29sizeMatrix=`/usr/local/sbin/bin/bin/identify -format "%wx%h %f\n" ${srcFile}` 30 31index1=`expr index "${sizeMatrix}" x` 32width=`expr substr "${sizeMatrix}" 1 \`expr ${index1} - 1\`` 33echo width: ${width} 34index2=`expr \`expr index "${sizeMatrix}" ' '\` - ${index1} - 1` 35height=`expr substr "${sizeMatrix}" \`expr ${index1} + 1\` ${index2}` 36echo height: ${height} 37 38if [ ${width} -lt 300 ] ; then 39 if [ ${height} -lt 300 ] ; then 40 echo Image size less than 300x300 41 cp ${srcFile} ${dstFile} 42 exit 0 43 fi 44fi 45 46if [ `echo ${ext}|tr 'a-z' 'A-Z'` = "BMP" ] ; then 47 index1=`expr index "${dstFile}" .` 48 dstFile=`expr substr "${dstFile}" 1 \`expr ${index1} - 1\``.jpg 49fi 50 51#convert image/usr/local/sbin/bin/bin/convert +profile '*' ${srcFile} -resize '1024x1024>' /data/tony/watermark_1.png -gravity southeast -compose Dissolve -composite ${dstFile}

使用范例:/usr/local/sbin/bin/bin/tony-convert-1.sh [src]{file}.{ext} [out]{file}_1024x1024.{ext}
三、resizeByWidthOrHeight.sh:
宽大于高时:定宽等比缩放 高自适应;宽小于高时:定高等比缩放,宽自适应

1#!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: resizeByWidthOrHeight.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./resizeByWidthOrHeight.sh src/1234.jpg 150x150 out/1234_150x2150.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26#identify image num 27picCount=`/usr/local/sbin/bin/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 28echo animate pictures: ${picCount} 29 30if [ ${picCount} -gt 1 ] ; then 31 echo "No handle for animate pictures" 32 cp ${srcFile} ${dstFile} 33 exit 0 34fi 35 36#identify image size 37sizeMatrix=`/usr/local/sbin/bin/bin/identify -format "%wx%h" ${srcFile}` 38 39echo "index1: $index1" 40width=${sizeMatrix%x*} 41echo width: ${width} 42height=${sizeMatrix#*x} 43echo height: ${height} 44 45newSize="${destWidth}x${destHeight}" 46# width < height 47if [ ${width} -lt ${height} ] ; then 48 newSize="'x${destHeight}>'" 49else 50 newSize="'${destWidth}>'" 51fi 52echo "newSize: ${newSize}" 53 54# resize 55resizeCmd="/usr/local/sbin/bin/bin/convert ${srcFile} -quality 100 -resize ${newSize} ${dstFile}" 56echo "resizeCmd: ${resizeCmd}" 57eval "${resizeCmd}"

使用范例:/usr/local/sbin/bin/bin/resizeByWidthOrHeight.sh [src]{file}.{ext} 594x395 [out]{file}_594x395.{ext}
四、tony-convert-2.sh:
缩放规则:
目标图宽<高时:定高等比压缩,宽自适应;
原图宽高比>目标图宽高比时:定高等比压缩,宽自适应;
否则:定宽等比压缩,高自适应
裁剪规则:默认居中,若目标图宽>=高,则居左上角

1#!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: tony-convert-2.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./tony-convert-2.sh src/1234.jpg 150x150 out/1234_150x150.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26#identify image num 27picCount=`/usr/local/sbin/bin/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 28echo animate pictures: ${picCount} 29 30if [ ${picCount} -gt 1 ] ; then 31 echo "No handle for animate pictures" 32 cp ${srcFile} ${dstFile} 33 exit 0 34fi 35 36#identify image size 37sizeMatrix=`/usr/local/sbin/bin/bin/identify -format "%wx%h" ${srcFile}` 38 39echo "index1: $index1" 40width=${sizeMatrix%x*} 41echo width: ${width} 42height=${sizeMatrix#*x} 43echo height: ${height} 44 45if [ `echo ${ext}|tr 'a-z' 'A-Z'` = "BMP" ] ; then 46 index1=`expr index "${dstFile}" .` 47 dstFile=`expr substr "${dstFile}" 1 \`expr ${index1} - 1\``.jpg 48fi 49 50srcRate=$(echo "scale=9; $width*1.0 / $height*1.0" | bc) 51destRate=$(echo "scale=9; $destWidth*1.0 / $destHeight*1.0" | bc) 52 53echo "srcRate: ${srcRate}" 54echo "destRate: ${destRate}" 55 56resizeCmd="/usr/local/sbin/bin/bin/convert +profile '*' ${srcFile} -resize '${destWidth}x${destHeight}^>' -grAvity Center -crop ${destWidth}x${destHeight}+0+0 +repage ${dstFile}" 57newSize="${destWidth}x${destHeight}" 58# width < height 59if [ ${destWidth} -lt ${destHeight} ] ; then 60 newSize="x${destHeight}>" 61elif [ `echo "${srcRate} > ${destRate}" | bc` -eq 1 ] ; then 62 newSize="x${destHeight}>" 63else 64 newSize="${destWidth}>" 65fi 66 67grAvityWay="Center" 68# width < height 69if [ ${destWidth} -ge ${destHeight} ] ; then 70 grAvityWay="NorthWest" 71fi 72 73# resize 74resizeCmd="/usr/local/sbin/bin/bin/convert +profile '*' ${srcFile} -resize '${newSize}' -grAvity ${grAvityWay} -crop ${destWidth}x${destHeight}+0+0 +repage ${dstFile}" 75echo "resizeCmd: ${resizeCmd}" 76eval "${resizeCmd}"

使用范例:/usr/local/sbin/bin/bin/tony-convert-2.sh [src]{file}.{ext} 170x105 [out]{file}_170x105.{ext}
五、tony-convert-3.sh:
以destWidth表示目的图宽,destHeight表示目的图高,persentSize=destWidth/destHeight表示目的图宽高比;
当原图宽<destWidth且高<destHeight时,不截取,直接上传;
当原图宽<destWidth,高>destHeight时,以原图宽为宽居中裁剪 竖图;
当原图宽>destWidth,高<destHeight时,以原图高为高居中裁剪 横图;
当原图宽>destWidth,高>destHeight,
{
当原图宽/高>persentSize时,将原图高压缩为destHeight居中裁剪
当原图宽/高<persentSize时,将原图宽压缩为destWidth居中裁剪
}

1!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: tony-convert-3.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./tony-convert-3.sh src/1234.jpg 750x375 out/1234_750x375.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26 27#identify image num 28picCount=`/usr/local/sbin/bin/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 29echo animate pictures: ${picCount} 30 31if [ ${picCount} -gt 1 ] ; then 32 echo "No handle for animate pictures" 33 cp ${srcFile} ${dstFile} 34 exit 0 35fi 36 37#identify image size 38sizeMatrix=`/usr/local/sbin/bin/bin/identify -format "%wx%h" ${srcFile}` 39 40echo "index1: $index1" 41width=${sizeMatrix%x*} 42echo width: ${width} 43height=${sizeMatrix#*x} 44echo height: ${height} 45 46#if [ `echo ${ext}|tr 'a-z' 'A-Z'` = "BMP" ] ; then 47 #index1=`expr index "${dstFile}" .` 48 #dstFile=`expr substr "${dstFile}" 1 \`expr ${index1} - 1\``.jpg 49#fi 50 51 52#newSize="${destWidth}x${destHeight}" 53heightPadding="0" 54widthPadding="0" 55persentSize=`echo "scale=4; ${destWidth}/${destHeight}" | bc` 56echo "persentSize: ${persentSize}" 57 58# quality 59qualityCmd="/usr/local/sbin/bin/bin/convert ${srcFile} -quality 90 ${dstFile}" 60echo "qualityCmd: ${qualityCmd}" 61eval "${qualityCmd}" 62 63 64# width > 750 && height <375 hengTu 65if [ ${width} -gt ${destWidth} ] && [ ${height} -lt ${destHeight} ] ; then 66 heightPadding=$[ ${destHeight}/2-${height}/2] 67 echo heightPadding: ${heightPadding} 68 flag=0 69# width < 750 && height >375 shuTu 70elif [ ${width} -lt ${destWidth} ] && [ ${height} -gt ${destHeight} ] ; then 71 widthPadding=$[ ${destWidth}/2-${width}/2 ] 72 echo widthPadding: ${widthPadding} 73 flag=0 74# width > 750 && height >375 resize and crop 75elif [ ${width} -gt ${destWidth} ] && [ ${height} -gt ${destHeight} ] && [ $ [ ${width}/${height} ]>${persentSize} ] ; then 76 echo "resize by src's height then crop" 77 newSize="'x${destHeight}>'" 78 flag=1 79elif [ ${width} -gt ${destWidth} ] && [ ${height} -gt ${destHeight} ] && [ $[ ${width}/${height} ]<${persentSize} ] ; then 80 echo "resize by src's width then crop" 81 newSize="'${destWidth}>'" 82 flag=1 83fi 84 85echo "newSize: ${newSize}" 86 87# resize 88if [ ${flag} -eq 1 ] ; then 89 resizeCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -resize ${newSize} ${dstFile}" 90 echo "resizeCmd: ${resizeCmd}" 91 eval "${resizeCmd}" 92 93 cropCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -gravity Center -crop ${destSize}+0+0 +repage ${dstFile}" 94else 95 echo "only crop pic" 96 cropCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -gravity Center -crop ${destSize}+${widthPadding}+${heightPadding} +repage ${dstFile}" 97fi 98 99# crop 100echo "cropCmd: ${cropCmd}" 101eval "${cropCmd}"

使用范例:/usr/local/sbin/bin/bin/tony-convert-3.sh [src]{file}.{ext} 750x375 [out]{file}_750x375.{ext}
六、tony-convert-3_bg.sh:
以destWidth表示目的图宽,destHeight表示目的图高,
当原图宽<destWidth且高<destHeight时,不截取,直接上传;
当原图宽<destWidth,高>destHeight时,以原图宽为宽居中裁剪 树图;
当原图宽>destWidth,高<destHeight时,以原图高为高居中裁剪 横图;
当原图宽>destWidth,高>destHeight,
{
当原图宽>高时,将原图高压缩为destHeight居中裁剪
当原图宽<高时,将原图宽压缩为destWidth居中裁剪
}
所有情况都要居中补白

1!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: tony-convert-3_bg.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./tony-convert-3_bg.sh src/1234.jpg 750x375 out/1234_750x375.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26 27#identify image num 28picCount=`/usr/local/sbin/bin/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 29echo animate pictures: ${picCount} 30 31if [ ${picCount} -gt 1 ] ; then 32 echo "No handle for animate pictures" 33 cp ${srcFile} ${dstFile} 34 exit 0 35fi 36 37#identify image size 38sizeMatrix=`/usr/local/sbin/bin/bin/identify -format "%wx%h" ${srcFile}` 39 40echo "index1: $index1" 41width=${sizeMatrix%x*} 42echo width: ${width} 43height=${sizeMatrix#*x} 44echo height: ${height} 45 46# quality 47qualityCmd="/usr/local/sbin/bin/bin/convert ${srcFile} -quality 90 ${dstFile}" 48echo "qualityCmd: ${qualityCmd}" 49eval "${qualityCmd}" 50 51 52# width > 750 && height <375 hengTu 53flag=0 54if [ ${width} -gt ${destWidth} ] && [ ${height} -lt ${destHeight} ] ; then 55 heightPadding=$[ ${destHeight}/2-${height}/2] 56 echo heightPadding: ${heightPadding} 57 flag=0 58# width < 750 && height >375 shuTu 59elif [ ${width} -lt ${destWidth} ] && [ ${height} -gt ${destHeight} ] ; then 60 widthPadding=$[ ${destWidth}/2-${width}/2 ] 61 echo widthPadding: ${widthPadding} 62 flag=0 63# width > 750 && height >375 resize and crop 64elif [ ${width} -gt ${destWidth} ] && [ ${height} -gt ${destHeight} ] && [ ${width} -gt ${height} ] ; then 65 echo "resize by src's height then crop" 66 newSize="'x${destHeight}>'" 67 flag=1 68elif [ ${width} -gt ${destWidth} ] && [ ${height} -gt ${destHeight} ] && [ ${width} -lt ${height} ] ; then 69 echo "resize by src's width then crop" 70 newSize="'${destWidth}>'" 71 flag=1 72fi 73 74echo "newSize: ${newSize}" 75 76# resize 77if [ ${flag} -eq 1 ] ; then 78 resizeCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -resize ${newSize} ${dstFile}" 79 echo "resizeCmd: ${resizeCmd}" 80 eval "${resizeCmd}" 81 cropCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -gravity Center -crop ${destSize}+0+0 +repage -background white -compose Copy -gravity center -extent ${destSize} ${dstFile}" 82else 83 echo "only crop pic" 84 cropCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -gravity Center -crop ${destSize}+0+0 +repage -background white -compose Copy -gravity center -extent ${destSize} ${dstFile}" 85fi 86 87# crop 88echo "cropCmd: ${cropCmd}" 89eval "${cropCmd}"

使用范例:【240x240大小,背景补白,1PX灰色边框】 /usr/local/sbin/bin/bin/tony-convert-3_bg.sh [src]{file}.{ext} 240x240 [out]{file}_240x240.{ext}
七、tony-convert-4.sh:
原图宽大于destWidth:
{
高>destHeight时:定宽等比缩放 以原图高为高居中裁剪;
否则:从左上角裁剪
}
原图宽小于destWidth:
{
高>destHeight时:以原图高为高居中裁剪;
否则:从左上角裁剪
}

1#!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: tony-convert-4.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./tony-convert-4.sh src/1234.jpg 150x150 out/1234_150x150.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26 27#identify image num 28picCount=`/usr/local/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 29echo animate pictures: ${picCount} 30 31if [ ${picCount} -gt 1 ] ; then 32 echo "No handle for animate pictures" 33 cp ${srcFile} ${dstFile} 34 exit 0 35fi 36 37#identify image size 38sizeMatrix=`/usr/local/bin/identify -format "%wx%h" ${srcFile}` 39 40echo "index1: $index1" 41width=${sizeMatrix%x*} 42echo width: ${width} 43height=${sizeMatrix#*x} 44echo height: ${height} 45 46#if [ `echo ${ext}|tr 'a-z' 'A-Z'` = "BMP" ] ; then 47 #index1=`expr index "${dstFile}" .` 48 #dstFile=`expr substr "${dstFile}" 1 \`expr ${index1} - 1\``.jpg 49#fi 50 51 52newSize="${destWidth}x${destHeight}" 53# width < height 54if [ ${width} -gt ${destWidth} ] ; then 55 newSize="'${destWidth}>'" 56 if [ ${height} -gt ${destHeight}] ; then 57 heihgtPadding="'${destHeight}/2'" 58 else 59 heihgtPadding="'0'" 60 fi 61else 62 newSize="'${width}>'" 63 if [ ${height} -gt ${destHeight}] ; then 64 heihgtPadding="'${destHeight}/2'" 65 else 66 heihgtPadding="'0'" 67 fi 68fi 69 70echo "newSize: ${newSize}" 71 72# resize 73resizeCmd="/usr/local/sbin/bin/bin/convert ${srcFile} -quality 90 -resize ${newSize} ${dstFile}" 74echo "resizeCmd: ${resizeCmd}" 75eval "${resizeCmd}" 76# add white ground 77addWhiteCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -crop ${destSize}+0-${heihgtPadding} +repage ${dstFile}" 78echo "addWhiteCmd: ${addWhiteCmd}" 79eval "${addWhiteCmd}"

使用范例:【160*120裁剪或居中加水印】/usr/local/sbin/bin/bin/tony-convert-4.sh [src]{file}.{ext} 160x120 [out]{file}_160.{ext}
八、tony-convert-5.sh:
宽大于高时:定宽等比缩放 高自适应;
宽小于高时:定高等比缩放,宽自适应;
并居中补白

1#!/bin/sh 2 3# we have 2 arguments: source file name and dest file name 4if [ $# -ne 3 ] ; then 5 echo "Usage: tony-convert-5.sh [source path] [widthxheigth] [dest path]" 6 echo "Example: ./tony-convert-5.sh src/1234.jpg 150x150 out/1234_150x2150.jpg" 7 exit 1 8fi 9 10srcFile="$1" 11dstFile="$3" 12 13destSize="$2" 14destWidth=${destSize%x*} 15destHeight=${destSize#*x} 16echo "destSize: ${destWidth}x${destHeight}" 17 18index1=`expr index "${srcFile}" /` 19echo "index1: $index1" 20index2=`expr index "${srcFile}" .` 21echo "index2: $index2" 22file=`expr substr "${srcFile}" \`expr ${index1} + 1\` \`expr ${index2} - ${index1} - 1\`` 23echo "file: $file" 24ext=`expr substr "${srcFile}" \`expr ${index2} + 1\` \`expr length "${srcFile}" - ${index2}\`` 25echo "ext: $ext" 26#identify image num 27picCount=`/usr/local/bin/identify ${srcFile}|grep -c "${file}.${ext}"` 28echo animate pictures: ${picCount} 29 30if [ ${picCount} -gt 1 ] ; then 31 echo "No handle for animate pictures" 32 cp ${srcFile} ${dstFile} 33 exit 0 34fi 35 36#identify image size 37sizeMatrix=`/usr/local/bin/identify -format "%wx%h" ${srcFile}` 38 39echo "index1: $index1" 40width=${sizeMatrix%x*} 41echo width: ${width} 42height=${sizeMatrix#*x} 43echo height: ${height} 44 45#if [ ${width} -lt 300 ] ; then 46# if [ ${height} -lt 300 ] ; then 47# echo Image size less than 300x300 48# cp ${srcFile} ${dstFile} 49# exit 0 50# fi 51#fi 52 53if [ `echo ${ext}|tr 'a-z' 'A-Z'` = "BMP" ] ; then 54 index1=`expr index "${dstFile}" .` 55 dstFile=`expr substr "${dstFile}" 1 \`expr ${index1} - 1\``.jpg 56fi 57newSize="${destWidth}x${destHeight}" 58# width < height 59if [ ${width} -lt ${height} ] ; then 60 newSize="'x${destHeight}>'" 61else 62 newSize="'${destWidth}>'" 63fi 64echo "newSize: ${newSize}" 65 66# resize 67resizeCmd="/usr/local/sbin/bin/bin/convert ${srcFile} -quality 80 -resize ${newSize} ${dstFile}" 68echo "resizeCmd: ${resizeCmd}" 69eval "${resizeCmd}" 70# add white ground 71addWhiteCmd="/usr/local/sbin/bin/bin/convert ${dstFile} -background white -gravity center -extent ${destSize} -gravity Center -crop ${destSize}+0+0 +repage ${dstFile}" 72echo "addWhiteCmd: ${addWhiteCmd}" 73eval "${addWhiteCmd}"

使用范例:【正方形图】/usr/local/sbin/bin/bin/tony-convert-5.sh [src]{file}.{ext} 90x90 [out]{file}_90x90.{ext}