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Offshore culture area image splicing method based on non-uniform precision

An image stitching and non-uniform technology, applied in the field of image processing, to achieve the effect of high stitching accuracy and improved integrity

Active Publication Date: 2021-07-23
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the defects of the image scene in this water area in the existing splicing method, and to provide an image splicing method based on non-uniform precision in offshore aquaculture areas

Method used

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  • Offshore culture area image splicing method based on non-uniform precision
  • Offshore culture area image splicing method based on non-uniform precision
  • Offshore culture area image splicing method based on non-uniform precision

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Embodiment

[0103] This example discloses an image stitching method for offshore aquaculture areas based on non-uniform precision. It mainly combines the pose and feature points to stitch the image first within the sub-area and then between the sub-areas, as shown in figure 1 As shown, the specific process is as follows:

[0104] S1. Use drones to take low-altitude aerial photography of the breeding area to obtain aerial images, perform preprocessing operations on the aerial images, adjust the brightness of the aerial images and obtain the mask of the cage area;

[0105] For image preprocessing, this includes aerial image dodging and cage mask acquisition. Due to the inconsistent exposure of the camera when taking pictures, the brightness of the finally acquired aerial images is inconsistent. The brightness of the aerial image will not only affect the look and feel of the final stitching result, but also adversely affect the grid optimization based on photometric alignment. Therefore, i...

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Abstract

The invention discloses an offshore culture area image splicing method based on non-uniform precision, and the method comprises the following steps: image preprocessing: completing the image uniform light operation, and obtaining a net cage area mask; image sub-region division: dividing the image into a plurality of sub-regions according to the characteristics of a graph overlapping region; sub-region optimization splicing: using a feature point-based DLT algorithm and a photometric alignment-based grid optimization algorithm, and combining a net cage mask search suture line to perform high-precision splicing on the sub-regions; and panoramic optimization splicing: projecting the plurality of sub-regions to a panoramic plane by using the pose information, and realizing splicing among the sub-regions to obtain a panoramic image. According to the characteristics of the offshore culture area, the high-precision splicing algorithm is used in the sub-areas, the low-precision splicing algorithm is used between the sub-areas, and natural splicing of the offshore culture area is achieved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image mosaic method for offshore aquaculture areas based on non-uniform precision. Background technique [0002] In the traditional offshore aquaculture industry, the observation of the aquaculture situation is usually realized by manual inspection. However, since the breeding facilities are scattered, it is time-consuming and labor-intensive to reach each breeding facility by boat. With the rapid development of science and technology, drones have been widely used in production and life. Use drones to take low-altitude aerial photography of the breeding area, and stitch the aerial images into a panorama to assist the staff in observing the breeding area, which can help the staff to quickly and easily understand the growth of aquatic products in the breeding area, greatly reducing the workload. Burden, improve work efficiency. [0003] At present, there are two comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
CPCG06T3/4007G06T2207/10032Y02A40/81
Inventor 韦岗李先禄王一歌曹燕
Owner SOUTH CHINA UNIV OF TECH
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