`vision.contour`

Configures native contour/blob extraction and returns a contour value.

Syntax

Atlas Script

vision.contour(lower, upper, roi?, min_area?, enabled?)

Parameters

lower: Lower HSV threshold array for the accepted color range.
upper: Upper HSV threshold array for the accepted color range.
roi Optional: Optional region of interest: a four-value [x, y, width, height] array. Pass null when the method accepts a full-frame scan.
min_area Optional: Minimum detected area to retain. Smaller candidates are ignored.
enabled Optional: Optional boolean that turns this configured tool on or off. Use true to process it and false to keep its configuration without running it.

Return value

Returns contour.

Remarks

Configures native contour/blob extraction and returns a contour value. Read/set enabled, overlay, roi, lower, upper, min_area; read results, count, target.

Examples

Count contour blobs.atlas

const centerRoi = [0.25, 0.25, 0.50, 0.50];
contour blobs = vision.contour([0, 90, 80], [15, 255, 255], centerRoi, 40, true);

event on_frame() {
    ui.status(string.format("Blobs: {}", blobs.count));
}