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Journals >
Chinese Optics Letters >
Volume 14 >
Issue 12 >
Page 121501 > Article
Chinese Optics Letters
Vol. 14, Issue 12, 121501 (2016)
Deep-sky image live stacking via star descriptor
Haiyang Zhou
1、*
and Yunzhi Yu
2
Author Affiliations
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
2
Computer Science Department, University of Southern California, 941 Bloom Walk, Los Angeles, CA 90089, USA
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DOI:
10.3788/COL201614.121501
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Haiyang Zhou, Yunzhi Yu. Deep-sky image live stacking via star descriptor[J]. Chinese Optics Letters, 2016, 14(12): 121501
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Fig. 1.
Flow diagram of our proposed algorithm.
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Fig. 2.
Comparison of thresholding results: (a) Original M42 image. (b) Otsu result. (c) Our result.
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Fig. 3.
Schematic diagram of the rotation invariant descriptor.
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Fig. 4.
Description results using our proposed star descriptor.
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Fig. 5.
Matching results using SIFT, SURF, and our descriptor. (a) Star detection results. (b) SIFT result. (c) SURF result. (d) Our result.
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Fig. 6.
Matching ratio results among SIFT, SURF, and our descriptor.
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Fig. 7.
Live stacking results while photographing M51. (a) No stack. (b) Three frames stacked. (c) Six frames stacked. (d) Nine frames stacked.
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Fig. 8.
Comparison results using ten-frames-stacked M92 images and their zoomed views. (a) Result with alignment enabled. (b) Result with alignment disabled.
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RMSE
SIFT
0.8880
0.4051
0.0161
0.1150
0.7101
0.8650
0.4309
0.9072
0.4314
0.9771
SURF
0.1475
0.2306
0.0152
0.0704
0.4595
0.7986
0.0199
0.5854
0.3452
0.7318
OUR
0.0106
0.0180
0.0143
0.0455
0.0224
0.0281
0.0127
0.0380
0.0307
0.0230
Joint Entropy
SIFT
9.3339
9.3715
8.3369
9.3600
9.4503
9.3734
7.0749
9.3636
9.3717
9.8534
SURF
9.3354
9.3711
7.3365
9.3588
9.3185
9.3651
6.2628
9.3414
9.3663
7.2840
OUR
6.0073
6.2474
6.6522
8.0960
6.8046
7.0414
6.1535
7.0749
7.4858
6.8305
Table 1.
Quantitative Registration Evaluation Against SIFT and SURF
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Figures&Tables (9)
Equations (5)
References (28)
Cited By (3)
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Haiyang Zhou, Yunzhi Yu. Deep-sky image live stacking via star descriptor[J]. Chinese Optics Letters, 2016, 14(12): 121501
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Paper Information
Category: Machine Vision
Received: Jul. 26, 2016
Accepted: Oct. 21, 2016
Published Online: Dec. 10, 2016
The Author Email: Haiyang Zhou (hyayh@zju.edu.cn)
DOI:
10.3788/COL201614.121501
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