The Scientific World Journal / 2014 / Article / Tab 1 / Research Article
Image Analysis to Estimate Mulch Residue in Soil Table 1 Thresholds and areas obtained after eliminating small objects. Thresholds: Otsu (
), Ridler-Calvard (
), manual thresholding (
), and local entropy (
). Soil areas by Otsu (
), Ridler-Calvard (
), manual thresholding (
), local entropy (
), and reference area (
).
Image Mulch* Block Threshold Area 1 1 1 0.2902 0.2874 0.2468 0.5059 50.9052 49.4967 52.9680 39.8214 49.0100 2 1 2 0.2745 0.2717 0.2297 0.4667 46.5797 45.5628 50.4214 38.7190 55.7600 3 1 3 0.3451 0.3425 0.2158 0.5529 70.6396 70.8865 82.7414 61.2655 86.7600 4 1 4 0.2706 0.2677 0.2494 0.5098 46.4310 45.7977 47.7424 27.5502 39.7300 5 1 5 0.2353 0.2283 0.2390 0.4667 45.2831 46.4100 44.8275 9.6671 29.0600 6 1 6 0.2824 0.2795 0.2430 0.1804 43.7783 43.8106 45.0526 67.6796 45.0500 7 2 1 0.3255 0.3228 0.2691 0.5843 64.9501 63.4503 68.4051 43.6728 59.9000 8 2 2 0.2784 0.2756 0.2483 0.1922 46.8627 44.7348 47.8013 65.0698 45.5200 9 2 3 0.2745 0.2677 0.2499 0.1412 36.4270 35.7161 38.2370 57.5681 33.7800 10 2 4 0.3216 0.3189 0.2599 0.5608 68.6014 68.0766 71.7309 52.9240 71.0700 11 2 5 0.3137 0.3189 0.2897 0.3490 49.5972 50.1565 51.2083 52.3749 52.0200 12 2 6 0.3255 0.3228 0.2819 0.5529 61.5203 62.4738 66.2118 38.5616 54.2500 13 3 1 0.2588 0.2559 0.2616 0.0902 24.5614 24.6451 24.4695 45.8991 22.2100 14 3 2 0.2745 0.2677 0.2406 0.1804 31.0725 31.3840 32.8444 44.1760 23.8300 15 3 3 0.2667 0.2598 0.2400 0.1176 19.3475 18.8066 19.6754 45.0813 23.3600 16 3 4 0.2392 0.2362 0.2332 0.1412 28.6458 28.8813 29.0930 46.7529 29.2300 17 3 5 0.1569 0.1378 0.3919 0.9961 1.6047 1.9750 0.6406 0.0000 2.7600 18 3 6 0.2118 0.2047 0.4327 0.1529 12.4904 7.4138 0.8420 44.7230 4.5300 19 4 1 0.2353 0.2323 0.2297 0.4706 47.0578 47.1434 47.3097 6.9027 26.3000 20 4 2 0.3098 0.3071 0.2517 0.1333 42.9258 43.0054 45.3668 60.3160 42.6000 21 4 3 0.2980 0.2953 0.2773 0.1569 47.2435 46.5150 47.6497 66.6117 48.9300 22 4 4 0.2980 0.2953 0.2662 0.1608 46.5599 46.6459 47.7724 63.7267 47.6600 23 4 5 0.3059 0.2992 0.2622 0.2275 45.0941 45.9767 49.0865 59.3983 42.4800 24 4 6 0.2902 0.2874 0.2439 0.1490 40.0192 35.5562 41.6854 59.2816 40.7600
