Click on the background with Magic Wand: the area becomes surrounded by wavy dashes
Hit the Delete key: background has a hatched pattern
Save and Done
For this to work your image must be RGB. If it isn't already make an RGB copy. If there are different shades of black in the background, you have to do this for each group of pixels that have a different RGB definition. In other words, it's easy with a solid-color background and increasingly time intensive depending on the number of RGB combos in the graphic's background.
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使用纯色 b/g 的一般方法：
要使此功能正常工作，您的图像必须是 RGB。如果尚未制作 RGB 副本。如果背景中有不同深浅的黑色，则必须对具有不同 RGB 定义的每组像素执行此操作。换句话说，使用纯色背景很容易，但根据图形背景中 RGB 组合的数量，时间会越来越密集。
The general approach with a solid-color b/g:
For this to work your image must be RGB. If it isn't already make an RGB copy. If there are different shades of black in the background, you have to do this for each group of pixels that have a different RGB definition. In other words, it's easy with a solid-color background and increasingly time intensive depending on the number of RGB combos in the graphic's background.