WATCH THE FAINT-EDGE TEST

Coloring Page Maker: Faint Edge Test

Three controlled inputs, three presets, two ink thresholds.

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Transcript

Why do faint edges disappear in a coloring page maker? A weak boundary and a simplified tracing preset can leave less visible ink. Try the original input and compare Detailed with Clean Outline before printing. This is a controlled test of our own algorithm, not a guarantee for every photo.

We drew the same circle on a white, six hundred by four hundred pixel canvas. Only its gray fill changed: two hundred forty, one hundred sixty, or forty. We ran each input through the unchanged production function with Clean Outline, Detailed, and Simplified. Nine outputs were measured.

For the faint circle, Clean Outline had zero pixels darker than gray one hundred twenty eight, but one thousand twenty four pixels below two hundred fifty. Detailed had one thousand twenty four darker pixels. Simplified had none under either threshold. Zero dark pixels did not mean every trace was empty.

The medium and strong circles produced visible dark pixels in all three presets. These counts describe ink, not accuracy or suitability for children. Compare the exact input and result, keep a clear useful contour, and check the print preview. The article includes all nine downloadable outputs and the measurement method.