Setting the Threshold option higher means the range of colors is less limited, so the selection will include a broader range of less similar colors. Setting the Threshold option for the Fuzzy Select Tool to a very low number limits the selection to very similar colors. You’ll see this term when you’re using some filters and tools, like the Fuzzy Select (Magic Wand) Tool.The Threshold setting for a tool or filter is usually the limit at which the tool or filter will no longer take effect.įor example, the Fuzzy Select Tool selects regions of a photo or image that have similar colors. Pixels that have more contrast (or more difference) than the Max Delta setting will not be blurred. The Selective Gaussian Blur filter will only blur portions of the photo that have less contrast than your Max Delta setting. In this case Max Delta means the Maximum Difference or maximum contrast. You might encounter the term Max Delta when you’re using certain filters in GIMP, for example the Selective Gaussian Blur filter. A white pixel next to a black pixel has a lot of contrast, but two middle gray pixels are less different, so we say they have less contrast.
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