Method for generating approximate kernel line of satellite stereo image pairs based on projection reference surface

Abstract

The invention provides a satellite stereoscopic image pair proximate nucleofilament generating method based on the projection reference surface, comprising the following steps that: 1. a local rectangular coordinate system is established; 2. the proximate rectilinear direction of the projection point path on the projection reference surface by the satellite stereoscopic image pair proximate nucleofilament curve is determined; 3. right and left nucleofilament images and the image point strict coordination transfer relation between left and right original images are established; and 4. the proximate nucleofilament recomposition of the satellite stereoscopic image pair is established by adopting the mode of image digital correction by indirection method to generate left and right nucleofilament images. The method provides a realization way similar to the digital image correction for the nucleofilament recomposition of the satellite stereoscopic image pair. The practice shows that the method can generate proximately strict nucleofilament images of subpixel stage with vertical parallax. The method has the advantages of simple operation and strong practicability. In addition, the proximate nucleofilament arrangement is performed based on the projection reference surface, thereby contributing to generating nucleofilament stereoscopic model with consistent resolving capability and relative to the horizontal of the object direction, and meeting the habit of stereoscopic vision of human eyes better.

Description

technical field [0001] The invention belongs to the field of surveying and mapping science and technology, and relates to a method for generating an approximate epipolar line of a satellite stereoscopic image pair based on a projection reference plane. This method combines the geometric characteristics of the nuclear curve of the linear array push-broom satellite image, and directly establishes a strict coordinate transformation between the left and right original images and the left and right epipolar images based on the image orientation parameters, which is simple, practical, and highly versatile. Background technique [0002] The linear array CCD push-broom imaging sensor has become an important payload of current and future high-resolution remote sensing satellites. Its special imaging method and the diversity and complexity of its physical structure make it possible to apply epipolar line theory and processing methods in traditional aerial photogrammetry. And technolog...

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Problems solved by technology

In general, the above methods still have some deficiencies. For example, the current projection trajectory method is mainly used to establish the approximate epipolar relationship of the row center projection sensor model. The obtained epipolar models are all nonlinear, and a large number of This will inevitably increase the complexity of epipolar line resampling; the satellite image approximate epipolar line generation method based on parallel projection conversion is only suitable for the situation where the sensor field of view is very small, and it is not suitable for terrain fluctuations and points with the same name. Matching accuracy has certain requirements, lack of versatility

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