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Multi-stereoscopic-image fusion drawing method considering different illumination imaging conditions

A technology of stereoscopic images and imaging conditions, which is applied in the field of multi-stereoscopic image fusion and mapping, and can solve the problems that the illumination consistency of multiple coverage images cannot be guaranteed.

Active Publication Date: 2018-07-20
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

Because planetary orbits are different from the sun-synchronous orbits usually used by earth observation satellites, it is often impossible to guarantee the consistency of illumination when acquiring multiple coverage images, so the illumination conditions are often different during multiple coverages

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  • Multi-stereoscopic-image fusion drawing method considering different illumination imaging conditions

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Embodiment Construction

[0067] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0068] Such as figure 1 As shown, the multi-stereo image high-precision fusion drawing method of different illumination imaging conditions provided by the present invention comprises the following steps:

[0069] 1. Acquire the existing images of the research area, and select multiple coverage stereo image pairs S1, S2...Sn-1, Sn

[0070] A stereo image pair represents images captured from the same area with stereo viewing conditions. Obtain the existing images in the study area, select multiple sets of stereo image pairs according to the intersection angle between the images, the azimuth and altitude angle of the sun when the images are imaged, the aspect ratio of th...

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Abstract

The invention relates to a multi-stereoscopic-image fusion drawing method considering different illumination imaging conditions. The method comprises the following steps: step one, acquiring an existing image of a research area and selecting a multi-coverage stereo image pair; step two, constructing an imaging geometric model of a remote sensing image; step three, carrying out initial matching onthe stereo image pair to obtain same-name points; step four, carrying out stereoscopic image area network beam method adjustment on the imaging geometric model obtained at the step two to obtain a refined imaging geometric model; step five, carrying out dense matching on each group of stereoscopic image pairs to obtain an image-space dense same-name point set of all groups of stereoscopic image pairs; step six, on the basis of the refined imaging geometric model obtained at the step four, carrying out forward intersection on the image-space dense same-name points obtained by the step five to obtain a dense three-dimensional point cloud of the object space, carrying out grid division and interpolation to obtain a DEM, and carrying out DEM fusion to obtain a hole-free DEM; and step seven, according to the hole-free DEM and the refined imaging geometric model, a DOM being an image with geographic information after terrain correction is obtained.

Description

technical field [0001] The invention relates to a multi-stereo image fusion drawing method considering different illumination and imaging conditions, and relates to the technical field of stereo photogrammetry in photogrammetry. Background technique [0002] Remote sensing mapping of the surface of planets (Moon, Mars) is a basic task in planetary exploration missions. It provides a geographic reference basis for planetary scientific exploration mission planning and scientific research, and is a basic means of obtaining planetary morphology and structure information. The current planetary orbiter remote sensing image mapping of the same area is mostly based on a pair of stereo images to produce high-precision topographic map products of the area. However, the information provided by a single stereoscopic image is often limited due to the influence of observation angles and lighting conditions, especially in some areas where the surface terrain has large fluctuations, shadows...

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Application Information

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IPC IPC(8): G06T5/50G06T15/10G06T15/50
CPCG06T5/50G06T15/10G06T15/506G06T2207/10028G06T2207/20221
Inventor 刘斌贾萌娜辛鑫邸凯昌
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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