It fits images that contain a few colors with a significant contrast between them. The threshold is a number between 0-1, which represents the percentage of black to be mapped based on the brightness of the traced image.
This method works by calculating the difference between the brightness within areas of the input image, and then areas within a certain threshold (the user decides this limit) will be black (or figure), and the rest is none (the background). The word scan refers to the number of times that the image will be scanned, and in Single Scan option it happens once so, it doesn’t take much time to process images, even if it is a high resolution. This option is generally good at tracing simple images, so it is resource friendly. These options and their sub-methods are: Single Scan This tool comprises two options, and each option has other sub-methods.
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