Background Color Correction Based on Coefficient Matrix

Jianguo Ran; Heng Liu; Lü Zhenjian; Suhong Wang; Zhaoyang Zeng

doi:10.3788/LOP202259.0210006

Journals >Laser & Optoelectronics Progress >Volume 59 >Issue 2 >Page 0210006 > Article

Laser & Optoelectronics Progress
Vol. 59, Issue 2, 0210006 (2022)

Background Color Correction Based on Coefficient Matrix

Jianguo Ran, Heng Liu^*, Lü Zhenjian, Suhong Wang, and Zhaoyang Zeng

Author Affiliations

National Key Laboratory on Electromagnetic Environmental Effects and Electro-Optical Engineering, Army Engineering University of PLA, Jiangsu , Nanjing 210007

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DOI: 10.3788/LOP202259.0210006 Cite this Article Set citation alerts

Jianguo Ran, Heng Liu, Lü Zhenjian, Suhong Wang, Zhaoyang Zeng. Background Color Correction Based on Coefficient Matrix[J]. Laser & Optoelectronics Progress, 2022, 59(2): 0210006 Copy Citation Text

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Fig. 1. Flow chart of coefficient matrix

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Scatter diagrams of chromatic aberration obtained by four chromatic aberration formulas before and after correction. (a) CIE DE1976; (b) DE1994; (c) DECMC; (d) DE2000

Fig. 2. Scatter diagrams of chromatic aberration obtained by four chromatic aberration formulas before and after correction. (a) CIE DE₁₉₇₆; (b) DE₁₉₉₄; (c) DE_CMC; (d) DE₂₀₀₀

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Fig. 3. Background color correction before and after comparison

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No.	$L_{o i}$	$a_{o i}$	$b_{o i}$	$L_{c i}$	$a_{c i}$	$b_{c i}$
1	33.112	-8.073	3.461	29.263	3.074	7.203
2	34.258	-5.591	3.643	37.658	-13.873	-0.489
3	34.271	-3.895	3.473	39.672	-1.419	2.727
4	33.219	-3.107	-3.107	36.842	-1.026	2.904
5	33.837	-2.501	4.038	31.355	-1.445	8.83
6	33.369	-1.436	4.367	32.522	4.053	6.804
7	33.497	-0.628	4.265	30.31	-7.362	16.075
8	32.963	-0.79	4.936	31.778	2.732	6.33
9	32.869	0.297	5.329	32.416	3.609	6.639
10	32.491	0.942	5.578	26.797	12.309	10.437

Table 1. Chromaticity values of partial color plate

No.	Real value			Shooting value			Value after correction
No.	L	a	b	L	a	b	L	a	b
1	44.446	-5.906	27.879	45.451	-8.176	40.210	42.620	-4.210	23.729
2	44.450	-4.068	27.310	52.860	-7.336	47.134	44.603	-3.183	26.707
3	43.884	-1.727	25.135	45.751	-2.421	34.953	41.052	-1.786	20.362
4	43.703	-1.284	25.905	47.758	-2.932	43.890	47.758	-1.432	25.232
5	43.620	0.455	24.319	51.076	2.120	28.925	39.725	0.357	23.007
6	42.906	1.864	25.079	48.617	4.636	42.568	42.452	2.106	23.931
7	42.335	2.566	24.591	48.366	3.489	44.023	42.843	1.642	24.857
8	42.583	3.242	23.695	48.817	5.956	33.273	40.283	2.177	18.537

Table 2. Comparison of swatch data under the same shooting conditions

Color classification	Average color before correction	Average color after correction
DE₁₉₇₆	15.316	3.298
DE₁₉₉₄	8.624	2.272
DE_CMC	9.465	2.495
DE₂₀₀₀	7.799	2.292

Table 3. Comparison of average chromatic aberration data before and after correction

Jianguo Ran, Heng Liu, Lü Zhenjian, Suhong Wang, Zhaoyang Zeng. Background Color Correction Based on Coefficient Matrix[J]. Laser & Optoelectronics Progress, 2022, 59(2): 0210006

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