Multispectral imaging using a stereo camera: concept, design and assessment

Shrestha, Raju; Mansouri, Alamin; Hardeberg, Jon Yngve

doi:10.1186/1687-6180-2011-57

EURASIP Journal on Advances in Signal Processing

Table 1 Statistics of estimation errors produced by the simulated systems

From: Multispectral imaging using a stereo camera: concept, design and assessment

System	Metric		NikonD70-NikonD70				NikonD70-Canon20D				Fujifilm 3D
			IB	LR	PN	NN	IB	LR	PN	NN	IB	LR	PN	NN
3-Channel	GFC	Min	0.879	0.878	0.896	0.879	0.896	0.895	0.903	0.895	0.890	0.890	0.898	0.890
		Mean	0.989	0.989	0.989	0.989	0.990	0.990	0.990	0.990	0.990	0.990	0.990	0.990
		STD	0.018	0.018	0.016	0.018	0.016	0.016	0.015	0.016	0.016	0.017	0.015	0.017
	RMS	Max	0.189	0.191	0.184	0.189	0.156	0.156	0.153	0.156	0.151	0.153	0.149	0.152
		Mean	0.034	0.034	0.032	0.034	0.031	0.031	0.029	0.031	0.031	0.031	0.029	0.031
		STD	0.027	0.027	0.025	0.027	0.023	0.023	0.022	0.023	0.023	0.023	0.021	0.023
	$Δ E_{a b}^{*}$	Max	13.458	13.708	11.437	13.453	19.077	19.068	15.088	19.068	16.336	16.383	13.305	16.321
		Mean	2.315	2.543	2.326	2.313	3.946	3.946	3.938	3.946	3.500	3.529	3.560	3.499
		STD	2.476	2.570	2.154	2.481	3.785	3.783	3.212	3.783	3.373	3.391	2.838	3.370
	For maximum GFC
6-Channel	GFC	Min	0.957	0.957	0.947	0.961	0.959	0.959	0.962	0.963	0.966	0.966	0.965	0.944
		Mean	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998
		STD	0.004	0.004	0.005	0.004	0.004	0.004	0.004	0.004	0.004	0.004	0.004	0.005
	RMS	Max	0.048	0.048	0.053	0.045	0.046	0.046	0.043	0.043	0.041	0.041	0.042	0.056
		Mean	0.013	0.013	0.012	0.013	0.013	0.013	0.012	0.013	0.014	0.014	0.013	0.014
		STD	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.009	0.009	0.009	0.008
	$Δ E_{a b}^{*}$	Max	5.943	6.047	2.310	4.813	7.418	7.507	4.963	6.060	7.633	7.632	7.961	1.702
		Mean	1.093	1.095	0.550	1.175	1.198	1.200	1.306	1.420	1.185	1.185	1.163	0.511
		STD	1.045	1.055	0.404	0.919	1.230	1.239	0.991	1.105	0.908	0.908	0.942	0.307
	Filter pair		XF2077 XF2021	XF2077 XF2021	XF2021 XF2203	XF2009 XF2021	XF2010 XF2021	XF2010 XF2021	XF2009 XF2021	XF2009 XF2021	XF2026 XF1026	XF2026 XF1026	XF2026 XF1026	XF2021 XF2203
	For minimum RMS
	GFC	Min	0.961	0.961	0.952	0.961	0.963	0.963	0.953	0.963	0.935	0.935	0.934	0.938
		Mean	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998	0.998
		STD	0.004	0.004	0.005	0.004	0.004	0.004	0.005	0.004	0.006	0.006	0.007	0.006
	RMS	Max	0.045	0.045	0.050	0.045	0.043	0.043	0.049	0.043	0.062	0.062	0.063	0.060
		Mean	0.013	0.013	0.012	0.013	0.013	0.013	0.012	0.013	0.013	0.013	0.013	0.014
		STD	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.008	0.010	0.010	0.010	0.009
	$Δ E_{a b}^{*}$	Max	4.793	4.793	5.136	4.813	6.056	6.079	3.615	6.060	6.473	6.518	5.953	2.965
		Mean	1.176	1.176	0.955	1.175	1.421	1.421	0.599	1.420	1.513	1.513	1.358	0.857
		STD	0.972	0.972	0.899	0.919	1.177	1.186	0.530	1.105	1.274	1.278	1.171	0.535
	Filter pair		XF2009 XF2021	XF2009 XF2021	XF2010 XF2021	XF2009 XF2021	XF2009 XF2021	XF2009 XF2021	XF2203 XF2021	XF2009 XF2021	XF2058 XF2021	XF2058 XF2021	XF2058 XF2021	XF2203 XF2021
	For minimum $Δ E_{a b}^{*}$
	GFC	Min	0.936	0.936	0.933	0.931	0.947	0.943	0.942	0.948	0.943	0.943	0.943	0.944
		Mean	0.998	0.998	0.998	0.997	0.998	0.997	0.998	0.998	0.998	0.998	0.998	0.998
		STD	0.006	0.006	0.007	0.007	0.005	0.006	0.006	0.005	0.005	0.005	0.006	0.005
	RMS	Max	0.062	0.062	0.062	0.065	0.054	0.075	0.075	0.053	0.057	0.058	0.058	0.057
		Mean	0.014	0.014	0.013	0.016	0.014	0.016	0.015	0.015	0.015	0.014	0.013	0.015
		STD	0.010	0.010	0.010	0.010	0.008	0.011	0.012	0.008	0.008	0.008	0.009	0.008
	$Δ E_{a b}^{*}$	Max	0.832	0.892	1.006	1.635	1.445	1.720	1.570	1.860	1.663	2.028	2.773	1.575
		Mean	0.371	0.387	0.396	0.394	0.369	0.419	0.416	0.409	0.404	0.487	0.500	0.400
		STD	0.188	0.193	0.200	0.233	0.237	0.306	0.312	0.310	0.248	0.322	0.407	0.270
	Filter pair		XF2014 XF2030	XF2014 XF2030	XF2014 XF2030	XF2014 XF2030	XF2021 XF2012	XF2040 XF2012	XF2040 XF2012	XF2021 XF2012	XF2021 XF2012	XF2021 XF2012	XF2021 XF2030	XF2021 XF2030

The maximum mean GFC, and the minimum mean RMS and $Δ E_{a b}^{*}$ values from among the different estimation methods are shown in bold.

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