Table 3.

Reduction in curvelet coefficients for sample mammograms from TMCH Scanner1 and Scanner2 dataset.

Sr. no.	TMCH: Scanner 1: “GE Medical Senograph System”				TMCH: Scanner 2: “Hologic Selenia System”
	ROI size	Total number of curvelet coefficients from subbands	Total number of selected curvelet coefficients from subbands	% reduction in curvelet coefficients	ROI size	Total number of curvelet coefficients from subbands	Total number of selected curvelet coefficients from subbands	% reduction in curvelet coefficients
1	459 × 412	11,40,617	7,94,885	30.31	291 × 278	4,89,243	3,17,014	35.20
2	548 × 513	16,93,403	11,17,873	33.99	545 × 246	8,09,627	5,31,604	34.34
3	415 × 303	7,58,323	4,45,585	41.24	560 × 483	16,30,583	10,68,439	34.47
4	645 × 495	19,51,443	11,45,580	41.29	782 × 510	24,00,137	12,75,073	46.87
5	437 × 691	18,16,651	9,85,120	45.77	87 × 141	75,773	67,871	10.43
6	812 × 500	24,39,937	12,87,065	47.25	311 × 185	3,48,565	2,40,546	30.99
7	468 × 379	10,66,333	7,10,242	33.40	262 × 348	5,50,303	2,82,821	48.61
8	673 × 582	23,55,589	17,30,915	26.52	610 × 440	16,14,515	8,42,876	47.79
9	250 × 201	3,04,513	2,35,670	22.61	949 × 391	22,27,209	13,59,338	38.97
10	525 × 488	15,44,691	11,61,942	24.78	365 × 385	8,46,523	6,04,473	28.59
11	488 × 779	22,87,547	16,11,385	29.56	393 × 247	5,85,063	4,90,474	16.17
12	1434 × 966	83,26,581	37,42,277	55.06	341 × 301	6,18,111	4,10,542	33.58
13	348 × 421	8,81,701	6,16,501	30.08	523 × 702	22,06,097	8,00,057	63.73
14	460 × 530	14,67,227	7,99,885	45.48	370 × 284	6,32,539	4,23,727	33.01
15	398 × 450	10,78,441	8,28,064	23.22	344 × 202	4,18,955	3,02,427	27.81
16	247 × 272	4,04,401	3,44,822	14.73	264 × 188	2,99,997	2,31,926	22.69
17	411 × 305	7,57,657	4,05,919	46.42	233 × 247	3,46,983	2,67,686	22.85
18	286 × 344	5,93,155	4,48,566	24.38	370 × 291	6,50,701	4,86,125	25.29
19	417 × 207	5,23,477	4,29,755	17.90	680 × 483	19,79,543	10,52,793	46.82
20	463 × 458	12,75,021	8,57,608	32.74	202 × 266	3,24,295	2,15,042	33.69
Average		16,33,335	9,84,983	33	Average	9,52,738	5,63,543	34