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Stroke, Thin Lines, and Coverage Fix
Output Enhancement reduces tiny seams between adjacent color regions and helps preserve thin structures from the source image.
Enable Stroke
When enabled, each SVG path is emitted with a stroke as well as a fill. The default width is 0.5:
- Increasing the width slightly overlaps adjacent paths and can hide white seams during rendering or scaling.
- Excessive width intrudes into neighboring colors and thickens fine details.
The range is 0–20. Turning Enable Stroke off hides Stroke Width and emits fill-only paths.
Thin Line Max Radius
The range is 0.5–10 px, with a default of 2.5 px. The engine uses a distance transform to identify narrow structures at or below this radius and preserve them more aggressively.
A value that is too small can miss thin lines. A value that is too large treats more narrow regions as line features. This is a radius in the internal working image, not a printed width in millimeters.
Coverage Fix
When Enable Coverage Fix is on, the engine checks canvas coverage after contour tracing. If the measured coverage is below Min Coverage Ratio, it patches pixels not covered by any SVG path to reduce tiny gaps between regions.
Min Coverage Ratio ranges from 0–1 and defaults to 0.998. Values closer to 1 make the repair trigger more readily.
Coverage only measures whether SVG paths cover the canvas. It is not a score for color or contour accuracy. If the boundary itself is wrong, adjust segmentation or curve parameters instead of only raising this threshold.
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