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ImageMagic 笔记
| Date: | 2023-02-06 00:00:00 |
| Description: | ImageMagic 使用笔记。 |
| Keywords: | ImageMagic, 图片处理 |
| Category: | engineering_technology/computer/software/media/graphic |
| Tag: | imagemagic, graphic |
| Link: | https://www.diewuxi.com/blog/article/89.html |
Changelog
* 2023-02-06
* Done
convert
draw
convert -stroke yellow -strokewidth 5 -draw "line 500,300 800,300" \
-strokewidth 1 -pointsize 12 -draw "text 500,400 '10 um'" \
draw_ellipse.gif \
draw_ellipse-bar.gif
resize
ImageMagick will try to preserve the aspect ratio if you use this command. It will alter the image to fit within a 200×100 area, but the image may not be exactly 200×100. If you want to force the image to become a specific size – even if it messes up the aspect ratio – add an exclamation point to the dimensions:
convert input.jpg -resize 640x320! output.jpg
convert input.jpg -resize 640x320 output.jpg
convert input.jpg -resize 640 output.jpg
convert input.jpg -resize x320 output.jpg
format
convert input.bmp output.jpg
convert input.bmp -quality 95 output.jpg
rotate
convert input.jpg -rotate 90 input-rotated.jpg
change density
convert -units PixelsPerInch input.jpg -density 300x300 output.jpg
convert -units PixelsPerInch input.jpg -density 300 output.jpg
Watermark
montage
montage input1.jpg input2.jpg input3.jpg input4.jpg input5.jpg -tile 3x2 -geometry "64x64>+2+2" montage.jpg
identify
identify -units PixelsPerInch -format "Size: %w pixels x %h pixels\nDensity: %x ppi x %y ppi\n" mypic.jpg
Last modified: 2023-02-06
Comments [1]
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Hilda Ansell[1#]Hi diewuxi.com owner, Thanks for sharing your thoughts!2024-08-30 07:13:07Reply