Area network adjustment method based on satellite image under weak intersection condition
A technology of regional network adjustment and satellite imagery, applied in image enhancement, image analysis, image data processing, etc., can solve problems such as failure of regional network adjustment, difficulty in applying single-line array optical satellite images, abnormal elevation coordinates of connection points, etc. achieve the effect of improving accuracy
Pending Publication Date: 2021-11-12
苏州九宇遥感科技有限公司
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Problems solved by technology
The weak intersection problem will make the traditional block adjustment method for good intersection conditions difficult to apply to single-line array optical satellite images. Poor failure
Therefore, affected by the problem of weak rendezvous, it is necessary to arrange control points on all images or to need the assistance of DEM data to achieve precise positioning of weak rendezvous optical satellite images. Bottleneck Problems in the Wide Application of Surveying and Mapping
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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0024] It should also be understood that the terminology used in th...
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The invention provides an area adjustment method based on a satellite image under a weak rendezvous condition, and the method comprises the steps: recognizing weak rendezvous connection points in connection points in a block in a target image; calculating ground three-dimensional coordinates of the target weak rendezvous connection point and ground three-dimensional coordinates of a homonymy point corresponding to the target weak rendezvous connection point, calculating an adjustment initial value of the target weak rendezvous connection point, and performing block adjustment in combination with an RPC parameter, a control point, a connection point and the weak rendezvous connection point of the image; according to the block adjustment method based on the DEM, carrying out iterative operation on a result value obtained through area adjustment until a block adjustment result converges, the problem of large relative offset between orbits is effectively controlled through the method that the DEM is used for assisting weak intersection images to carry out block adjustment, the precision of the images is greatly improved, and it is very beneficial to manufacturing orthoimages in the later period.
Description
technical field [0001] The invention relates to the technical field of photogrammetry and remote sensing, in particular to a block adjustment method based on satellite images under weak intersection conditions. Background technique [0002] High-resolution satellite remote sensing earth observation technology is an important means for human beings to obtain geospatial information. Geospatial information products made from high-resolution satellite images have been widely used in topographic surveying and mapping, land resource investigation, geographical monitoring, disaster relief, Town planning and many other fields are playing an extremely important role in my country's social economy and national defense construction. In order to fully tap the application potential of these optical satellite images, so that they can provide basic geospatial information guarantee for my country's social economy, national defense construction, and even the implementation of global strategie...
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IPC IPC(8): G06T3/00G06T7/70
CPCG06T7/70G06T2207/10032G06T3/08G06T3/02
Inventor 张过
Owner 苏州九宇遥感科技有限公司