coordN coordn
Normalized Coordinates. Used to specify relative positions within an image, such as image offsets or crop parameters, normalized to the size of the image.
Positive values move towards the bottom-right.
Often, the reference position is the center of the image. In this case, 0,0
corresponds to the center of the image, -0.5,-0.5
to the top-left corner, and 0.5,0.5
to the bottom-right corner.
It is also used to specify image size or rectangle size relative to the size of layer 0. In this case, the value must be greater than 0. 0 may indicate that a specific default value should be used. A value of 1,1
specifies a size equal to that of layer 0.
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