4-path borehole wall video cylinder panoramic image generation method and device

A cylindrical panorama and hole wall technology, which is applied in the field of borehole panoramic imaging, can solve the problems of hole wall imaging with a single 4-channel borehole wall video and so on.

Active Publication Date: 2016-10-12
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0006] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a cylinder panorama view of the 4-way borehole wall video that overcomes the problem that the existing digital camera system can only solve the problem of the singleness of the vertical hole wall and hole wall imaging Generation method and device

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  • 4-path borehole wall video cylinder panoramic image generation method and device
  • 4-path borehole wall video cylinder panoramic image generation method and device
  • 4-path borehole wall video cylinder panoramic image generation method and device

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Embodiment Construction

[0050] The present invention is described in detail below with reference to accompanying drawing and embodiment:

[0051] attached Figure 1-8 It can be seen that a method for generating a cylindrical panorama of a 4-way borehole wall video comprises the following steps:

[0052]In step s801, four cameras with the same focal length are selected, and the four cameras are connected into one to form a camera group; they are placed perpendicularly to each other in the same plane with their backs to the same center point, and the shooting direction is perpendicular to the cylindrical surface where the wall of the borehole is located; The camera group is placed in the geological exploration hole;

[0053] In step s802, the camera group moves longitudinally for a set distance along the hole wall;

[0054] In step s803, four single image files are simultaneously extracted at a certain moment during the movement of the drilling video camera;

[0055] In step s804, geometric correcti...

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Abstract

The invention provides a 4-path borehole wall video cylinder panoramic image generation method and device. The generation device comprises 4-path video input devices, a video preprocessing device, a cylindrical projection device, an image registration device and an image splicing and fusion device. The image preprocessing device comprises an image geometric correction device and an image color correction device. According to the 4-path borehole wall video cylinder panoramic image generation method and device, the panoramic image generation method is based on four camera systems, which are vertically arranged mutually, so that the technical problems above are solved fundamentally, and borehole imaging technology is allowed to be subjected to breakthrough and substantial development; through 4-path borehole wall videos, periphery of the borehole wall is imaged from four different directions simultaneously; video images in the adjacent two directions have a borehole wall same area imaging part, and video image frames in the same direction have a borehole wall same area imaging part; and through image features of video images, a panorama video is obtained after splicing processing.

Description

technical field [0001] The invention belongs to the technical field of borehole panoramic imaging, and in particular relates to a method and device for generating a borehole cylinder panorama image of a system of four cameras placed perpendicularly to each other. Background technique [0002] In geological exploration, conventional drilling is generally used to obtain cores to understand geological conditions, but there are disadvantages such as heavy drilling workload, high drilling cost, and generally difficult to directly observe the drilling process; in addition, some weak layers (broken Mud interlayers, weathered interlayers, etc.) and structural fracture zones are often difficult to obtain cores and understand their geological conditions, which leads to difficulties in engineering construction. With the development of science and technology, borehole imaging technology is widely used in water conservancy, civil engineering, energy, transportation, geology, mining and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00
CPCG06T3/0068G06T2207/10016G06T2207/20221
Inventor 曹茂永赵猛滕升华王毅
Owner SHANDONG UNIV OF SCI & TECH
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