Underwater video image restoration and splicing method based on pose information

A technology of pose information and video images, applied in the field of image processing, can solve problems such as unsatisfactory processing results, achieve good uniform light and dehazing effects, reduce time, and reduce cumulative errors.

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

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Problems solved by technology

These methods are not ideal for the uneven illumination caused by artificial light sources.

Method used

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  • Underwater video image restoration and splicing method based on pose information
  • Underwater video image restoration and splicing method based on pose information
  • Underwater video image restoration and splicing method based on pose information

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Embodiment

[0106] like figure 2 As shown, this embodiment proposes an underwater video image restoration and splicing method based on pose information.

[0107] S1. Obtain the underwater video image with the synchronous calibration signal and the pose information of the camera through the underwater video image acquisition device,

[0108] Among them, the structure of the underwater video image acquisition device is as follows: figure 1 As shown, it includes a camera module and a pose information recording module, wherein the camera module is composed of a camera and a first SD card, the camera is used to shoot underwater video images, and the first SD card is used to save videos with synchronous calibration signals File; pose information recording module, which is composed of main controller, gyroscope, GPS, underwater ultrasonic ranging sensor, signal lamp and second SD card. The main controller is used to control the work of other units, and the gyroscope is used to obtain the camer...

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Abstract

The invention discloses an underwater video image restoration and splicing method based on pose information. The method comprises the following steps: acquiring an underwater video image with a synchronous calibration signal and pose information of a camera through an underwater video image acquisition device; performing one-to-one correspondence on the video frames of the underwater video image and the pose information; calculating a homography matrix between the video frames by using the pose information, further solving an overlapping area between the video frames, extracting key frames according to the proportion of the overlapping area, and performing time calibration on the video frames and the pose information; performing underwater video image restoration by adopting an improved shallow water image enhancement algorithm which is obtained based on adaptive parameters and is stretched relative to a global histogram; dividing the restored key frame into a plurality of sub-modules in combination with the pose information; and after the sub-modules are spliced into sub-module images, synthesizing a plurality of sub-module images into a final panorama. A clear underwater panorama can be quickly obtained in combination with the pose information.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for restoring and splicing underwater video images based on pose information. Background technique [0002] The bottom quality, water level, water flow, and richness of planktonic algae where the cage is located will all affect the capacity of the cage culture. A good site selection of cages can provide superior living and growing conditions for marine aquaculture, and improve the aquaculture capacity of the water area to a certain extent. For offshore shallow water areas (generally, the water depth is 3 to 10 meters), use unmanned ships to carry underwater photography cameras, and perform panoramic stitching after underwater video shooting to obtain underwater topography and landforms, which is conducive to assisting the site selection of cages. Science layout. [0003] Underwater video images are captured by underwater photography cameras. Before video resto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T7/70G06T5/00G06T7/62G06T7/90G01D21/02
CPCG06T3/4038G06T7/70G06T5/002G06T7/62G06T7/90G01D21/02G06T2207/10016
Inventor 丁泉龙张权韦岗曹燕王一歌
Owner SOUTH CHINA UNIV OF TECH
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