Imagemagick转换调整大小然后裁剪 [英] Imagemagick convert resize then crop
问题描述
我有1000幅不同分辨率的图像(例如1234x2122、4400x5212等),我想将它们全部转换为固定的100x100尺寸,所以。
-
首先,我需要按比例调整图像大小,并得到100xA或Ax100,其中A> 100(对于图像的宽度和高度,它取决于图像的宽度和高度,对于某些图像,宽度> height和一些图像的高度>宽度)。
-
将此图像从中心裁剪到100x100
是否有一个简单的convert命令,可以用于所有图像?
您将使用区域填充( ^
) -resize 操作上的-processing.php#geometry rel = noreferrer>几何修改器以统一缩小比例。要裁剪中心,请 -范围
和 -重力中心
将起作用。
转换input.jpg-调整大小100x100 ^ \
-重力中心\
-范围100x100 \
output.jpg
更新
正如Mark Setchell在评论中指出的, mogrify
实用程序可以用来批量转换项目。
mogrify -path ./path/to/write/results/ \
-调整大小100x100 ^ \
-重力中心\
-范围100x100 \
./path/to/source/files/*
< blockquote>
提醒: Mogrify将使用结果图像覆盖原始文件,除非您设置 -path
参数。
I have over 1000 images on different resolutions, (for example 1234x2122, 4400x5212 , etc) and I want to convert all them to fixed 100x100 size, so.
first I need to resize images keeping proportions, and get 100xA or Ax100, where A > 100 ( it depends width and height of image, for some images width > height, and for some images height > width ).
Crop this image to 100x100 from center
Is there a simple convert command, that I can use for all my images ?
You would use the area-fill (^
) geometry modifier on the -resize
operation to unify the down-scale. For cropping the center, -extent
with -gravity Center
will work.
convert input.jpg -resize 100x100^ \
-gravity Center \
-extent 100x100 \
output.jpg
Update
As Mark Setchell pointed out in the comments, the mogrify
utility can be leveraged to batch convert items.
mogrify -path ./path/to/write/results/ \
-resize 100x100^ \
-gravity Center \
-extent 100x100 \
./path/to/source/files/*
Reminder: Mogrify will overwrite original file with resulting image(s), unless you set the
-path
parameter.
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