Star Map Recognition Algorithm Based on Improved Log-Polar Transformation

Xuliang Yan; Wang Xu; Gongliu Yang; Lu Wang

doi:10.3788/AOS202141.1010001

Journals >Acta Optica Sinica >Volume 41 >Issue 10 >Page 1010001 > Article

Acta Optica Sinica
Vol. 41, Issue 10, 1010001 (2021)

Star Map Recognition Algorithm Based on Improved Log-Polar Transformation

Xuliang Yan¹, Wang Xu², Gongliu Yang^1、*, and Lu Wang¹

Author Affiliations

¹School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China

²Navy Shanghai Aviation Maintenance Repair Factory, Shanghai 200083, China

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DOI: 10.3788/AOS202141.1010001 Cite this Article Set citation alerts

Xuliang Yan, Wang Xu, Gongliu Yang, Lu Wang. Star Map Recognition Algorithm Based on Improved Log-Polar Transformation[J]. Acta Optica Sinica, 2021, 41(10): 1010001 Copy Citation Text

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Fig. 1. LPT results of star map. (a) Before rotation; (b) after rotation

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Fig. 2. Results of star map transformation using the improved algorithm. (a) Before rotation; (b) after rotation

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Fig. 3. Recognition rate of star map

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Fig. 4. Recognition rate of star map. (a) A pseudostar; (b) two pseudostars; (c) three pseudostars

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Fig. 5. Recognition rate of star map. (a) A missing star; (b) two missing stars

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Fig. 6. Recognition rate of star map under the influence of both missing star and pseudostar

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Algorithm	Maximaltime /s	Minimaltime /s	Averagetime /s
LPT algorithm	0.0811	0.0718	0.0738
Improved LPTalgorithm	0.0131	7.1050×10^-4	0.0062

Table 1. Time of star map recognition

Xuliang Yan, Wang Xu, Gongliu Yang, Lu Wang. Star Map Recognition Algorithm Based on Improved Log-Polar Transformation[J]. Acta Optica Sinica, 2021, 41(10): 1010001

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