In this case, it should use copy_opacity. We compose these images by telling imagemagick what composition method it should use. The second is of a white circle on a transparent background. Next we choose to composite these two images. The first coordinate is the center of the circle, the second is the outer edge. Pay attention that the circle command goes INSIDE the quotes. Next we draw a circle using the draw command. We then set the fill of the circle we are about to draw. After the colon xc: we place the color the background should be, in this case none. We then initiate this canvas using xc:none. Inside the parenthesis we set the size of a new canvas using the -size switch.
The parenthesis are escaped by backslashes and you MUST have a space after the opening paren and before the closing escape backslash. If this was another jpg, we could simply name it without the parenthesis. To add a second image to the image we are going to open parenthesis, we open parenthesis because we have some processes that are only meant for that image. IMPORTANT: The methods shown in this post are for a landscape image. Next we want to create another image that acts somewhat like a mask, but for all intents and purposes kind of is not as it isn’t a greyscale image and retains its alpha channel. All $ convert goat.jpg does is open that image. This takes an image of an adorable goat, whose dimensions are 960圆50. This post will show you a couple ways in which you can crop images using imagemagick and explain why somethings are the way they are.Ĭonvert goat.jpg \( -size 960圆50 xc:none -fill white -draw "circle 480,325 480,0" \) -compose copy_opacity -composite goat_method_one.png This is especially true when all you want to do is perform what should be a simple task. There is a plethora of documentation, and some of it can be quite confusing. However, it seems to make a lot of people crazy and understandably so.
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