Image registration and stitching method and device based on geometric invariants, and computer device

An image registration and variable technology, applied in the field of star map processing, can solve problems such as feature point mismatch registration accuracy

Inactive Publication Date: 2018-12-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a geometric invariant-based image registration and mosaic method and device, computer equipment and computer-readable storage medium, which fully utilizes the geometric invariant information existing between star points in the star map, and The feature points existing in the system establish feature descriptors and perform matching, which solves the technical problems of feature point mismatch and low registration accuracy in the prior art

Method used

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  • Image registration and stitching method and device based on geometric invariants, and computer device
  • Image registration and stitching method and device based on geometric invariants, and computer device
  • Image registration and stitching method and device based on geometric invariants, and computer device

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Embodiment 1

[0070] Embodiment 1 of the present invention provides an image registration and mosaic method based on geometric invariants. The registration and mosaic method can determine the matching point pairs of feature points between the star map to be registered and the reference star map, thereby completing the alignment between the star map to be registered and the reference star map. registration of star maps, figure 1 It is a flow chart of the steps of the image registration and stitching method based on geometric invariants provided by Embodiment 1 of the present invention, specifically, as figure 1 As shown, the method includes the following steps S1 to S11.

[0071] Step S1: Binarize the reference star map and the star map to be registered respectively to obtain M star points in the reference star map and N star points in the star map to be registered.

[0072] Wherein, both M and N are natural numbers greater than or equal to 4. On the reference star map and the star map to ...

Embodiment 2

[0116] Embodiment 2 of the present invention provides an image registration and stitching device based on geometric invariants. The registration and stitching device can determine the matching point pairs of feature points between the star map to be registered and the reference star map, thereby completing the alignment between the star map to be registered and the reference star map. registration of star maps, figure 2 is a block diagram of an image registration and stitching device based on geometric invariants provided by Embodiment 2 of the present invention, specifically, as figure 2 As shown, the device includes: binarization module 201, feature point calculation module 202, coordinate calculation module 203, description vector calculation module 204, matching value calculation module 205, matching point pair determination module 206, registration parameter calculation module 207, Verification module 208 , mismatch removal module 209 , iteration threshold calculation m...

Embodiment 3

[0135] This embodiment also provides a computer device, such as a smart phone, a tablet computer, a notebook computer, a desktop computer, a rack server, a blade server, a tower server, or a cabinet server (including an independent server, or A server cluster composed of multiple servers), etc. image 3 The hardware structure diagram of the computer equipment provided for Embodiment 4 of the present invention, such as image 3 As shown, the computer device 20 of this embodiment at least includes but is not limited to: a memory 21 and a processor 22 that can communicate with each other through a system bus, such as image 3 shown. It should be pointed out that, image 3 Only computer device 20 is shown having components 21-22, but it should be understood that implementing all of the illustrated components is not a requirement and that more or fewer components may instead be implemented.

[0136] In this embodiment, the memory 21 (that is, a readable storage medium) includes ...

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Abstract

The invention discloses an image registration and stitching method and device based on geometric invariants and a computer device. The method comprises: binarizing a reference star map and a to-be-registered star map; calculating the feature point coordinates of the reference star map and the to-be-registered star map; constructing the geometric invariants of all feature points; constructing a matching cost function of the star points of the reference star map and the to-be-registered star map according to the geometric invariants; calculating the cost function and matching the feature pointsof the reference star map and the to-be-registered star map; selecting N groups of matching point pairs at random, and calculating registration parameters according to a rigid body transformation model; verifying the registration parameters of the remaining matching point pairs to remove mismatch. The method and device can improve registration accuracy and satisfy the requirement of subsequent image fusion or image stitching.

Description

technical field [0001] The present invention relates to the technical field of star map processing, and more specifically, to a method and device for image registration and stitching based on geometric invariants, and computer equipment. Background technique [0002] Image registration is to find the spatial transformation relationship between two images or multiple images of the same scene taken at different time points, different viewing angles or by different sensors, and to match one or more of them. The process of overlaying. Image registration can be simply understood as a process of finding a spatial mapping, rearranging the pixel positions of an image, and maintaining spatial consistency with the corresponding pixels of another image. Image registration is one of the key technologies in many image analysis fields such as remote sensing image processing, target recognition, image fusion, image stitching, image reconstruction, robot vision, etc., and is a research hot...

Claims

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Application Information

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IPC IPC(8): G06T3/40G06T7/11G06T7/136G06T7/33
CPCG06T3/4038G06T7/11G06T7/136G06T7/33G06T2200/32
Inventor 高昆吴穹庄幽文豆泽阳张廷华华梓铮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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