画像フォーマットの変換やリサイズは Windows 上の GUI のツールでやることが多かったのですが、ImageMagick を使えば Linux 上のコマンドライン(CUI)で簡単に変換ができます。
例えば jpg の画像サイズの変更、jpg から gif へのフォーマット変換、複数の画像から pdf への変換などができます。
また Photoshop の EPS の形式からも相互変換ができます。
ImageMagickの最新版
最新版は ImageMagick 6.4.8-37.0.8-11 で下記のサイトからダウンロードできます。
使い方は簡単で、ImageMagick のソフトウエア内にある convert コマンドを使って変換します。
-quality オプションを付けると変換時のクオリティーを調整できます。
リサイズは -resize オプションを使います。
複数ファイルを順番に変換する
複数ファイルを 1 つずつ変換する場合も、ファイル名を工夫すればシェルでループさせて一気に変換することも可能です。
1 2 3 4 | # jpg から gif $ convert rilakkuma.jpg rilakkuma.gif # 複数の jpg から pdf $ convert *.jpg rilakkuma.pdf |
PHP や Perl のプログラムから使用する場合は、機会があればまとめてみたいと思います。
以下、ImageMagick 6.7.8-9 のオプション一覧です。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 | $ convert --help Version: ImageMagick 6.7.8-9 2016-06-22 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC Features: OpenMP Usage: convert [options ...] file [ [options ...] file ...] [options ...] file Image Settings: -adjoin join images into a single multi-image file -affine matrix affine transform matrix -alpha option activate, deactivate, reset, or set the alpha channel -antialias remove pixel-aliasing -authenticate password decipher image with this password -attenuate value lessen (or intensify) when adding noise to an image -background color background color -bias value add bias when convolving an image -black-point-compensation use black point compensation -blue-primary point chromaticity blue primary point -bordercolor color border color -caption string assign a caption to an image -channel type apply option to select image channels -colors value preferred number of colors in the image -colorspace type alternate image colorspace -comment string annotate image with comment -compose operator set image composite operator -compress type type of pixel compression when writing the image -define format:option define one or more image format options -delay value display the next image after pausing -density geometry horizontal and vertical density of the image -depth value image depth -direction type render text right-to-left or left-to-right -display server get image or font from this X server -dispose method layer disposal method -dither method apply error diffusion to image -encoding type text encoding type -endian type endianness (MSB or LSB) of the image -family name render text with this font family -fill color color to use when filling a graphic primitive -filter type use this filter when resizing an image -font name render text with this font -format "string" output formatted image characteristics -fuzz distance colors within this distance are considered equal -gravity type horizontal and vertical text placement -green-primary point chromaticity green primary point -intent type type of rendering intent when managing the image color -interlace type type of image interlacing scheme -interline-spacing value set the space between two text lines -interpolate method pixel color interpolation method -interword-spacing value set the space between two words -kerning value set the space between two letters -label string assign a label to an image -limit type value pixel cache resource limit -loop iterations add Netscape loop extension to your GIF animation -mask filename associate a mask with the image -matte store matte channel if the image has one -mattecolor color frame color -monitor monitor progress -orient type image orientation -page geometry size and location of an image canvas (setting) -ping efficiently determine image attributes -pointsize value font point size -precision value maximum number of significant digits to print -preview type image preview type -quality value JPEG/MIFF/PNG compression level -quiet suppress all warning messages -red-primary point chromaticity red primary point -regard-warnings pay attention to warning messages -remap filename transform image colors to match this set of colors -respect-parentheses settings remain in effect until parenthesis boundary -sampling-factor geometry horizontal and vertical sampling factor -scene value image scene number -seed value seed a new sequence of pseudo-random numbers -size geometry width and height of image -stretch type render text with this font stretch -stroke color graphic primitive stroke color -strokewidth value graphic primitive stroke width -style type render text with this font style -support factor resize support: > 1.0 is blurry, < 1.0 is sharp -synchronize synchronize image to storage device -taint declare the image as modified -texture filename name of texture to tile onto the image background -tile-offset geometry tile offset -treedepth value color tree depth -transparent-color color transparent color -undercolor color annotation bounding box color -units type the units of image resolution -verbose print detailed information about the image -view FlashPix viewing transforms -virtual-pixel method virtual pixel access method -weight type render text with this font weight -white-point point chromaticity white point Image Operators: -adaptive-blur geometry adaptively blur pixels; decrease effect near edges -adaptive-resize geometry adaptively resize image using 'mesh' interpolation -adaptive-sharpen geometry adaptively sharpen pixels; increase effect near edges -alpha option on, activate, off, deactivate, set, opaque, copy transparent, extract, background, or shape -annotate geometry text annotate the image with text -auto-gamma automagically adjust gamma level of image -auto-level automagically adjust color levels of image -auto-orient automagically orient (rotate) image -bench iterations measure performance -black-threshold value force all pixels below the threshold into black -blue-shift factor simulate a scene at nighttime in the moonlight -blur geometry reduce image noise and reduce detail levels -border geometry surround image with a border of color -bordercolor color border color -brightness-contrast geometry improve brightness / contrast of the image -cdl filename color correct with a color decision list -charcoal radius simulate a charcoal drawing -chop geometry remove pixels from the image interior -clamp restrict pixel range from 0 to the quantum depth -clip clip along the first path from the 8BIM profile -clip-mask filename associate a clip mask with the image -clip-path id clip along a named path from the 8BIM profile -colorize value colorize the image with the fill color -color-matrix matrix apply color correction to the image -contrast enhance or reduce the image contrast -contrast-stretch geometry improve contrast by `stretching' the intensity range -convolve coefficients apply a convolution kernel to the image -cycle amount cycle the image colormap -decipher filename convert cipher pixels to plain pixels -deskew threshold straighten an image -despeckle reduce the speckles within an image -distort method args distort images according to given method ad args -draw string annotate the image with a graphic primitive -edge radius apply a filter to detect edges in the image -encipher filename convert plain pixels to cipher pixels -emboss radius emboss an image -enhance apply a digital filter to enhance a noisy image -equalize perform histogram equalization to an image -evaluate operator value evaluate an arithmetic, relational, or logical expression -extent geometry set the image size -extract geometry extract area from image -features distance analyze image features (e.g. contrast, correlation) -fft implements the discrete Fourier transform (DFT) -flip flip image vertically -floodfill geometry color floodfill the image with color -flop flop image horizontally -frame geometry surround image with an ornamental border -function name parameters apply function over image values -gamma value level of gamma correction -gaussian-blur geometry reduce image noise and reduce detail levels -geometry geometry preferred size or location of the image -identify identify the format and characteristics of the image -ift implements the inverse discrete Fourier transform (DFT) -implode amount implode image pixels about the center -interpolative-resize geometry resize image using 'point sampled' interpolation -lat geometry local adaptive thresholding -layers method optimize, merge, or compare image layers -level value adjust the level of image contrast -level-colors color,color level image with the given colors -linear-stretch geometry improve contrast by `stretching with saturation' -liquid-rescale geometry rescale image with seam-carving -median geometry apply a median filter to the image -mode geometry make each pixel the 'predominant color' of the neighborhood -modulate value vary the brightness, saturation, and hue -monochrome transform image to black and white -morphology method kernel apply a morphology method to the image -motion-blur geometry simulate motion blur -negate replace every pixel with its complementary color -noise geometry 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 -ordered-dither NxN add a noise pattern to the image with specific amplitudes -paint radius simulate an oil painting -polaroid angle simulate a Polaroid picture -posterize levels reduce the image to a limited number of color levels -profile filename add, delete, or apply an image profile -quantize colorspace reduce colors in this colorspace -radial-blur angle radial blur the image -raise value lighten/darken image edges to create a 3-D effect -random-threshold low,high random threshold the image -region geometry apply options to a portion of the image -render render vector graphics -repage geometry size and location of an image canvas -resample geometry change the resolution of an image -resize geometry resize 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 scale the image -segment values segment an image -selective-blur geometry selectively blur pixels within a contrast threshold -sepia-tone threshold simulate a sepia-toned photo -set property value set an image property -shade degrees shade the image using a distant light source -shadow geometry simulate an image shadow -sharpen geometry sharpen the image -shave geometry shave pixels from the image edges -shear geometry slide one edge of the image along the X or Y axis -sigmoidal-contrast geometry increase the contrast without saturating highlights or shadows -sketch geometry simulate a pencil sketch -solarize threshold negate all pixels above the threshold level -sparse-color method args fill in a image based on a few color points -splice geometry splice the background color into the image -spread radius displace image pixels by a random amount -statistic type geometry replace each pixel with corresponding statistic from the neighborhood -strip strip image of all profiles and comments -swirl degrees swirl image pixels about the center -threshold value threshold the image -thumbnail geometry create a thumbnail of the image -tile filename tile image when filling a graphic primitive -tint value tint the image with the fill color -transform affine transform image -transparent color make this color transparent within the image -transpose flip image vertically and rotate 90 degrees -transverse flop image horizontally and rotate 270 degrees -trim trim image edges -type type image type -unique-colors discard all but one of any pixel color -unsharp geometry sharpen the image -vignette geometry soften the edges of the image in vignette style -wave geometry alter an image along a sine wave -white-threshold value force all pixels above the threshold into white Image Sequence Operators: -append append an image sequence -clut apply a color lookup table to the image -coalesce merge a sequence of images -combine combine a sequence of images -composite composite image -crop geometry cut out a rectangular region of the image -deconstruct break down an image sequence into constituent parts -evaluate-sequence operator evaluate an arithmetic, relational, or logical expression -flatten flatten a sequence of images -fx expression apply mathematical expression to an image channel(s) -hald-clut apply a Hald color lookup table to the image -morph value morph an image sequence -mosaic create a mosaic from an image sequence -print string interpret string and print to console -process arguments process the image with a custom image filter -separate separate an image channel into a grayscale image -smush geometry smush an image sequence together -write filename write images to this file Image Stack Operators: -clone indexes clone an image -delete indexes delete the image from the image sequence -duplicate count,indexes duplicate an image one or more times -insert index insert last image into the image sequence -reverse reverse image sequence -swap indexes swap two images in the image sequence Miscellaneous Options: -debug events display copious debugging information -help print program options -list type print a list of supported option arguments -log format format of debugging information -version print version information |
時間を短縮したい。お店屋さんの生産枠を増やしたい。など、ゲームを進めるうえで、どうしても少しだけダイヤを課金したくなる時ってありますよね。
そんな時は、楽天市場で「itunesカード」を購入すると楽天ポイントの還元があってお得です。
iOS(iPhone)の人に限られてしまいますが、初回購入時に 500 円オフのキャンペーンをしていたり、楽天ポイントも最大で 16 倍とものすごくお得です。
![[商品価格に関しましては、リンクが作成された時点と現時点で情報が変更されている場合がございます。]](https://hbb.afl.rakuten.co.jp/hgb/1bc1b214.90e9b07e.1bc1b215.9b4ad702/?me_id=1339082&item_id=10000002&m=https%3A%2F%2Fthumbnail.image.rakuten.co.jp%2F%400_mall%2Fitunes%2Fcabinet%2Fmem_item%2Fimgrc0077095449.jpg%3F_ex%3D80x80&pc=https%3A%2F%2Fthumbnail.image.rakuten.co.jp%2F%400_mall%2Fitunes%2Fcabinet%2Fmem_item%2Fimgrc0077095449.jpg%3F_ex%3D240x240&s=240x240&t=picttext "[商品価格に関しましては、リンクが作成された時点と現時点で情報が変更されている場合がございます。]")
