ImageMagic检测图像是否有边框或框架 [英] ImageMagic detect if the image has border or frame

问题描述

基本上，我的图像周围有一个黄色的粗边框，类似于NetGeo图像.我想检查是否有边框(NetGeo只是一个例子，边框颜色可以是任何宽度和任何颜色)，我想检测出该边框并将其剃光(如果存在).>

我看到此问题已在

但是如果没有实线边框，我不想裁剪图像.

例如

我不想删除黄色，因为它不是实线边框.希望它有助于理解这个问题.

解决方案

此代码似乎可以在ImageMagick中使用

 转换NG.png-模糊20％-背景"rgb(239,204,60)"-定义修剪:背景百分比= 0％-修剪+ repage x.png 

Basically, I have a image with a thick yellow border around it something like NetGeo image. I want to check if there is border or not (NetGeo is just an example, border color can be of any width and any color), I want to detect that and shave it if it exists.

I see this question is been answered in Trim whitespace using PIL for PIL but I am looking for same solution in imagemagick with a single command or java

But I don't want to crop the image if there is not solid border.

For example

I don't want to remove the yellow color as it is not a solid lined border. Hope it helps to understand the question.

解决方案

This code seems to work in ImageMagick

convert NG.png -fuzz 20% -background "rgb(239,204,60)" -define trim:percent-background=0% -trim +repage x.png

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