🚀 Contrek vs OpenCV Benchmark Report

Readable combined report from 11 runs. The main table uses the 10 warm runs for averages; the first cold run is preserved in the raw table below.

Warm runs analyzed10+ 1 cold-start run

Speed wins5/7Contrek faster by average runtime

RAM wins6/7Contrek uses less memory

Total warm average4867 vs 6099 msContrek vs OpenCV

Aggregated warm-run results

Image	Contrek contours Ext/Hole	OpenCV contours Ext/Hole	Contrek time avg / range	OpenCV time avg / range	Speed ratio CT/CV	Contrek RAM avg / range	OpenCV RAM avg / range	RAM ratio CT/CV
test_1024x10241.0 MP · setup 8/8	212 / 2259	219 / 2259	36 ms24 ms–53 ms	24 ms17 ms–33 ms	1.54xOpenCV faster	71 MB70 MB–73 MB	89 MB87 MB–90 MB	0.80xContrek lower
test_4096x409616.8 MP · setup 8/8	621 / 128690	625 / 128689	667 ms621 ms–705 ms	854 ms791 ms–937 ms	0.78xContrek faster	478 MB476 MB–482 MB	619 MB617 MB–620 MB	0.77xContrek lower
test_10000x10000100.0 MP · setup 8/8	806 / 371	806 / 371	588 ms562 ms–633 ms	643 ms628 ms–677 ms	0.91xContrek faster	1000 MB998 MB–1002 MB	1458 MB1382 MB–1478 MB	0.69xContrek lower
test_10240x10240104.9 MP · setup 8/8	219 / 2259	219 / 2259	267 ms252 ms–282 ms	486 ms464 ms–530 ms	0.55xContrek faster	1459 MB1382 MB–1479 MB	1519 MB1517 MB–1522 MB	0.96xContrek lower
test_10240x10240_2104.9 MP · setup 8/8	2447 / 5716	2447 / 5716	476 ms452 ms–512 ms	450 ms433 ms–468 ms	1.06xOpenCV faster	1520 MB1517 MB–1523 MB	1520 MB1517 MB–1523 MB	1.00xTie
test_15360x15360235.9 MP · setup 8/8	2447 / 5716	2447 / 5716	855 ms803 ms–990 ms	971 ms939 ms–1032 ms	0.88xContrek faster	1658 MB1576 MB–1680 MB	2785 MB2703 MB–2808 MB	0.60xContrek lower
test_20480x20480419.4 MP · setup 8/8	625 / 128689	625 / 128689	1978 ms1874 ms–2090 ms	2670 ms2588 ms–2929 ms	0.74xContrek faster	3334 MB3330 MB–3345 MB	5420 MB5417 MB–5423 MB	0.62xContrek lower

How to read ratios: values below 1.00x favor Contrek. Example: 0.75x means Contrek used about 75% of OpenCV's time or RAM.

All runs, including cold start

Run	Image	MP	Contrek time	OpenCV time	Speed ratio	Contrek RAM	OpenCV RAM	RAM ratio
1 cold	test_1024x1024	1.0	27ms	20ms	1.35x	71MB	88MB	0.81x
1 cold	test_4096x4096	16.8	598ms	781ms	0.77x	476MB	617MB	0.77x
1 cold	test_10000x10000	100.0	554ms	650ms	0.85x	1001MB	1477MB	0.68x
1 cold	test_10240x10240	104.9	282ms	463ms	0.61x	1478MB	1520MB	0.97x
1 cold	test_10240x10240_2	104.9	470ms	459ms	1.02x	1520MB	1520MB	1.00x
1 cold	test_15360x15360	235.9	850ms	980ms	0.87x	1672MB	2803MB	0.60x
1 cold	test_20480x20480	419.4	2040ms	3131ms	0.65x	3334MB	5423MB	0.61x
2	test_1024x1024	1.0	41ms	33ms	1.24x	70MB	89MB	0.79x
2	test_4096x4096	16.8	649ms	812ms	0.80x	482MB	620MB	0.78x
2	test_10000x10000	100.0	586ms	628ms	0.93x	1002MB	1382MB	0.73x
2	test_10240x10240	104.9	272ms	530ms	0.51x	1382MB	1522MB	0.91x
2	test_10240x10240_2	104.9	458ms	468ms	0.98x	1523MB	1523MB	1.00x
2	test_15360x15360	235.9	803ms	1031ms	0.78x	1576MB	2708MB	0.58x
2	test_20480x20480	419.4	2089ms	2680ms	0.78x	3334MB	5420MB	0.62x
3	test_1024x1024	1.0	24ms	22ms	1.09x	73MB	90MB	0.81x
3	test_4096x4096	16.8	664ms	857ms	0.77x	477MB	620MB	0.77x
3	test_10000x10000	100.0	576ms	633ms	0.91x	1002MB	1477MB	0.68x
3	test_10240x10240	104.9	256ms	464ms	0.55x	1478MB	1519MB	0.97x
3	test_10240x10240_2	104.9	452ms	467ms	0.97x	1519MB	1519MB	1.00x
3	test_15360x15360	235.9	839ms	1032ms	0.81x	1680MB	2805MB	0.60x
3	test_20480x20480	419.4	1880ms	2612ms	0.72x	3333MB	5420MB	0.61x
4	test_1024x1024	1.0	53ms	26ms	2.04x	71MB	88MB	0.81x
4	test_4096x4096	16.8	649ms	865ms	0.75x	477MB	618MB	0.77x
4	test_10000x10000	100.0	583ms	677ms	0.86x	1001MB	1478MB	0.68x
4	test_10240x10240	104.9	252ms	465ms	0.54x	1479MB	1519MB	0.97x
4	test_10240x10240_2	104.9	472ms	450ms	1.05x	1519MB	1519MB	1.00x
4	test_15360x15360	235.9	832ms	939ms	0.89x	1676MB	2807MB	0.60x
4	test_20480x20480	419.4	1997ms	2626ms	0.76x	3332MB	5420MB	0.61x
5	test_1024x1024	1.0	39ms	29ms	1.34x	73MB	90MB	0.81x
5	test_4096x4096	16.8	699ms	937ms	0.75x	479MB	620MB	0.77x
5	test_10000x10000	100.0	599ms	636ms	0.94x	1001MB	1478MB	0.68x
5	test_10240x10240	104.9	267ms	524ms	0.51x	1479MB	1521MB	0.97x
5	test_10240x10240_2	104.9	477ms	453ms	1.05x	1521MB	1521MB	1.00x
5	test_15360x15360	235.9	822ms	960ms	0.86x	1675MB	2808MB	0.60x
5	test_20480x20480	419.4	2024ms	2650ms	0.76x	3335MB	5422MB	0.62x
6	test_1024x1024	1.0	24ms	17ms	1.41x	70MB	87MB	0.80x
6	test_4096x4096	16.8	679ms	809ms	0.84x	476MB	617MB	0.77x
6	test_10000x10000	100.0	580ms	646ms	0.90x	998MB	1477MB	0.68x
6	test_10240x10240	104.9	268ms	490ms	0.55x	1478MB	1518MB	0.97x
6	test_10240x10240_2	104.9	492ms	450ms	1.09x	1518MB	1518MB	1.00x
6	test_15360x15360	235.9	837ms	970ms	0.86x	1675MB	2803MB	0.60x
6	test_20480x20480	419.4	2021ms	2591ms	0.78x	3330MB	5420MB	0.61x
7	test_1024x1024	1.0	39ms	19ms	2.05x	71MB	88MB	0.81x
7	test_4096x4096	16.8	621ms	853ms	0.73x	477MB	618MB	0.77x
7	test_10000x10000	100.0	633ms	660ms	0.96x	1000MB	1477MB	0.68x
7	test_10240x10240	104.9	281ms	471ms	0.60x	1478MB	1520MB	0.97x
7	test_10240x10240_2	104.9	482ms	460ms	1.05x	1520MB	1520MB	1.00x
7	test_15360x15360	235.9	990ms	962ms	1.03x	1680MB	2805MB	0.60x
7	test_20480x20480	419.4	2090ms	2724ms	0.77x	3333MB	5420MB	0.61x
8	test_1024x1024	1.0	44ms	21ms	2.10x	70MB	87MB	0.80x
8	test_4096x4096	16.8	685ms	819ms	0.84x	477MB	617MB	0.77x
8	test_10000x10000	100.0	562ms	628ms	0.89x	998MB	1475MB	0.68x
8	test_10240x10240	104.9	282ms	492ms	0.57x	1477MB	1517MB	0.97x
8	test_10240x10240_2	104.9	477ms	452ms	1.06x	1517MB	1517MB	1.00x
8	test_15360x15360	235.9	895ms	969ms	0.92x	1678MB	2805MB	0.60x
8	test_20480x20480	419.4	1978ms	2929ms	0.68x	3332MB	5417MB	0.62x
9	test_1024x1024	1.0	28ms	19ms	1.47x	70MB	87MB	0.80x
9	test_4096x4096	16.8	705ms	907ms	0.78x	477MB	617MB	0.77x
9	test_10000x10000	100.0	605ms	658ms	0.92x	1001MB	1476MB	0.68x
9	test_10240x10240	104.9	260ms	473ms	0.55x	1477MB	1519MB	0.97x
9	test_10240x10240_2	104.9	481ms	433ms	1.11x	1519MB	1519MB	1.00x
9	test_15360x15360	235.9	878ms	939ms	0.94x	1679MB	2804MB	0.60x
9	test_20480x20480	419.4	1874ms	2671ms	0.70x	3332MB	5420MB	0.61x
10	test_1024x1024	1.0	47ms	33ms	1.42x	73MB	90MB	0.81x
10	test_4096x4096	16.8	645ms	791ms	0.82x	481MB	619MB	0.78x
10	test_10000x10000	100.0	579ms	631ms	0.92x	1001MB	1383MB	0.72x
10	test_10240x10240	104.9	266ms	476ms	0.56x	1383MB	1519MB	0.91x
10	test_10240x10240_2	104.9	458ms	437ms	1.05x	1519MB	1519MB	1.00x
10	test_15360x15360	235.9	820ms	965ms	0.85x	1577MB	2703MB	0.58x
10	test_20480x20480	419.4	1944ms	2632ms	0.74x	3334MB	5420MB	0.62x
11	test_1024x1024	1.0	26ms	18ms	1.44x	72MB	90MB	0.80x
11	test_4096x4096	16.8	674ms	893ms	0.75x	478MB	620MB	0.77x
11	test_10000x10000	100.0	575ms	632ms	0.91x	1001MB	1476MB	0.68x
11	test_10240x10240	104.9	263ms	472ms	0.56x	1478MB	1520MB	0.97x
11	test_10240x10240_2	104.9	512ms	434ms	1.18x	1520MB	1520MB	1.00x
11	test_15360x15360	235.9	834ms	946ms	0.88x	1679MB	2805MB	0.60x
11	test_20480x20480	419.4	1878ms	2588ms	0.73x	3345MB	5423MB	0.62x