Laser & Optoelectronics Progress, Volume. 58, Issue 6, 600002(2021)
Star Location Method Based on Improved Linear Interpolation
Figures & Tables(8)
Fig. 2. Linear interpolation results of different functions. (a) Convex function; (b) concave function
Table 1. Results of functional analysis
View tableTable 1. Results of functional analysis
Range of d First derivative Second derivative (0,σ) Subtractive function <0 σ f'(σ) 0 (σ,+¥) Increasing function >0
Table 2. Real coordinates of star points
View tableTable 2. Real coordinates of star points
Number True coordinate 1 (-61.7446 pixel, 34.32417 pixel) 2 (-60.9765 pixel, 24.10935 pixel) 3 (-47.4128 pixel, 64.57945 pixel) 4 (-46.2244 pixel, 30.54815 pixel) 5 (-30.2613 pixel, 4.082314 pixel) 6 (-24.0949 pixel, 48.02352 pixel) 7 (-8.09864 pixel, 23.47342 pixel) 8 (14.97539 pixel, 34.48306 pixel) 9 (28.78171 pixel,-35.9072 pixel) 10 (33.79329 pixel, 21.50791 pixel) 11 (35.88439 pixel, 60.15412 pixel) 12 (36.61397 pixel, 45.43025 pixel) 13 (38.42026 pixel, 12.5518 pixel) 14 (48.04826 pixel,-47.6104 pixel) 15 (49.49402 pixel,-52.475 pixel) 16 (55.49218 pixel, 34.40737 pixel) 17 (57.24585 pixel, -8.64415 pixel) 18 (58.51987 pixel,-18.4205 pixel)
Table 3. Calculation results of two methods
View tableTable 3. Calculation results of two methods
Number Result of linear interpolation Deviation error by traditional method /pixel Result of improved linear interpolation Deviation error by improved method /pixel Reduction ratio 1 (-61.8887 pixel,34.3113 pixel) 0.1447 (-61.7622 pixel,34.2042 pixel) 0.1213 0.1619 2 (-60.9989 pixel,24.0211 pixel) 0.0910 (-60.9277 pixel,24.0533 pixel) 0.0743 0.1830 3 (-47.4626 pixel,64.5324 pixel) 0.0686 (-47.4449 pixel,64.5391 pixel) 0.0516 0.2482 4 (-46.0905 pixel,30.8265 pixel) 0.3089 (-46.0325 pixel30.7285 pixel) 0.2633 0.1474 5 (-30.1873 pixel,3.9527 pixel) 0.1492 (-30.2083 pixel,4.1972 pixel) 0.1265 0.1525 6 (-24.0368 pixel,47.9632 pixel) 0.0838 (-24.0748 pixel,48.0889 pixel) 0.0684 0.1831 7 (-8.0335 pixel,23.7265 pixel) 0.2613 (-8.0199 pixel,23.6892 pixel) 0.2296 0.1211 8 (14.9887 pixel,34.7327 pixel) 0.2500 (15.0900 pixel,34.6670 pixel) 0.2167 0.1333 9 (28.7742 pixel,-36.0652 pixel) 0.1582 (28.7921 pixel,-35.7738 pixel) 0.1338 0.1545 10 (33.8256 pixel,21.8126 pixel) 0.3064 (33.6201 pixel,21.7106 pixel) 0.2666 0.1300 11 (35.8820 pixel,60.0020 pixel) 0.1521 (35.9624 pixel,60.2564 pixel) 0.1287 0.1540 12 (36.6093 pixel,45.5325 pixel) 0.1024 (36.5881 pixel,45.5121 pixel) 0.0858 0.1616 13 (38.4751 pixel,12.4801 pixel) 0.0903 (38.4945 pixel,12.5495 pixel) 0.0742 0.1776 14 (48.0111 pixel,-47.7989 pixel) 0.1922 (48.0978 pixel,-47.7662 pixel) 0.1635 0.1493 15 (49.5268 pixel,-52.4982 pixel) 0.0402 (49.5232 pixel,-52.4708 pixel) 0.0295 0.2661 16 (55.5017 pixel,34.5017 pixel) 0.0948 (55.5549 pixel,34.4529 pixel) 0.0775 0.1819 17 (57.1735 pixel,-8.5235 pixel) 0.1407 (57.3638 pixel,-8.6292 pixel) 0.1189 0.1547 18 (58.5149 pixel,-18.4851 pixel) 0.0648 (58.5688 pixel,-18.4412 pixel) 0.0531 0.1803
Tools
Get Citation
Copy Citation Text
Yan Xuliang, Yang Gongliu, Wang Lu. Star Location Method Based on Improved Linear Interpolation[J]. Laser & Optoelectronics Progress, 2021, 58(6): 600002
Paper Information
Category: Reviews
Received: Jul. 6, 2020
Accepted: --
Published Online: Mar. 1, 2021
The Author Email: Xuliang Yan (yanxuliang@buaa.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20