MEN Yubo, ZHANG Guoyin, MEN Chaoguang, LI Xiang, MA Ning. A Sub-pixel Disparity Refinement Algorithm Based on Lagrange Interpolation[J]. Chinese Journal of Electronics, 2017, 26(4): 784-789. doi: 10.1049/cje.2017.03.002
Citation: MEN Yubo, ZHANG Guoyin, MEN Chaoguang, LI Xiang, MA Ning. A Sub-pixel Disparity Refinement Algorithm Based on Lagrange Interpolation[J]. Chinese Journal of Electronics, 2017, 26(4): 784-789. doi: 10.1049/cje.2017.03.002

A Sub-pixel Disparity Refinement Algorithm Based on Lagrange Interpolation

doi: 10.1049/cje.2017.03.002
Funds:  This work is supported by the National Natural Science Foundation of China (No.61672181).
  • Received Date: 2016-12-01
  • Rev Recd Date: 2017-01-11
  • Publish Date: 2017-07-10
  • A sub-pixel disparity refinement algorithm based on Lagrange interpolation is proposed to calculate the sub-pixel disparity and the elevation of the target construction on the remote sensing image. The accurate integer matching feature points are obtained by improved affine scale invariant feature transform. A series of interpolation samples can be estimated through the three times magnification results of each feature matching point and its close neighbor pixels. The final sub-pixel deviation can be calculated by the interpolation samples. Experiment results show that a more accurate elevation information can be obtained on the remote sensing image with corrective epipolar line, and an accurate sub-pixel disparity result can be estimated without the epipolar line constraint as well.
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