Epipolar image generating method of universal line array satellite

A technology of satellite core and general line, applied in the field of computer vision, can solve the problems of controlling within one pixel, difficult up and down parallax, etc., to achieve the effect of eliminating up and down parallax, good robustness and applicability

Active Publication Date: 2018-09-28
WUHAN UNIV
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[0004] The above two types of methods have their own advantages and disadvantages. The method based on the object-space projection reference plane is simple and convenient, and it is relatively easy to obtain l

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  • Epipolar image generating method of universal line array satellite
  • Epipolar image generating method of universal line array satellite
  • Epipolar image generating method of universal line array satellite

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[0031] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as figure 1 As shown, a method for generating a general linear array satellite epipolar image comprises the following steps:

[0033] Step 1: Data preparation. Obtain the three-dimensional linear array satellite image data, including image tif and orientation parameter file RPC.

[0034] The invention is applicable to homologous image pairs, including homologous stereo and heterologous stereo, and is also applicable to heterologous image pairs, and has strong applicability. This aspect requires that the input data must be preprocessed data, that is, with high-precision positioning parameters RPC, preprocessing i

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Abstract

he invention discloses an epipolar image generating method of a universal line array satellite. The method comprises the following steps: selecting a left image in a stereo image pair as a reference image, allowing an epipolar ray to be strictly parallel to an image line in the space of the reference image in an image blocking area-for-area correction manner, and using an affine transformation model to describe a mapping relationship before and after blocking correction in order to establish a coordinate transformation relationship between the epipolar ray image and the original image; and simultaneously projecting the corrected left epipolar image and the right original image to one reference substance of an object space based on an object space projection image idea, and re-sampling thereference surface to generate a right epipolar image having the same size and same resolution with the left epipolar image. The method well considers the epipolar ray direction change in every area ofthe image, effectively controls the vertical parallax of the full-image epipolar rays to be close to zero, and especially has a good robustness to the stereo image pair with an unstable nuclear linerelationship.

Description

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Application Information

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Owner WUHAN UNIV
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