Finds the external contours in a caller-supplied binary mask and reports, for ea...
https://medien.halowerk.com/v1/oss-opencv-external-contour-metricsOverview
Finds the external contours in a caller-supplied binary mask and reports, for each, its area, perimeter, centroid and bounding rectangle, plus the total foreground pixel count. The division of labour is deliberate: segmentation is a domain decision, so the mask comes from you and the measurement comes from here, which keeps the numbers reproducible and independent of any threshold this service might have chosen.
Protocol
x402 (POST)
Price
$0.0020
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
HALOWERK Medien
Source
bazaar
Indexed
2026-10-25 17:35:27
Health
Status
healthy
Latency (p50)
43ms
Uptime (30d)
100.0%
Reliability Score
97/100
Last Checked
2026-10-31 07:18:51
Last Healthy
2026-10-31 07:18:51
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"bodyType": "json",
"exampleUrl": "https://medien.halowerk.com/v1/oss-opencv-external-contour-metrics/schema#/requestExample",
"method": "POST",
"schemaUrl": "https://medien.halowerk.com/v1/oss-opencv-external-contour-metrics/schema#/inputSchema",
"type": "http"
}
Output Schema
{
"example": {
"operation": "external-contour-metrics",
"result": {
"contours": [
{
"area": 400,
"bounding_box": [
10,
10,
21,
21
],
"centroid": [
20,
20
],
"perimeter": 80,
"vertex_count": 4
},
{
"area": 200,
"bounding_box": [
50,
10,
21,
21
],
"centroid": [
56.66666666666666,
16.666666666666664
],
"perimeter": 68.28427124023438,
"vertex_count": 3
}
],
"foreground_pixels": 672,
"warnings": [
"Only external contours are measured; holes are excluded. Polygon area differs from foreground-pixel count."
]
},
"runtime_ms": 0.795,
"upstream": {
"binary_sha256": "1fd4eb220f9986baa0ea0492cbcbedf85b868e792cbcac5f69e10d067a2f956c",
"components": [
"findContours",
"moments",
"contourArea",
"arcLength",
"boundingRect"
],
"numpy_version": "2.5.0",
"package_version": "4.13.0.92",
"project": "OpenCV",
"version": "4.13.0"
}
},
"type": "json"
}