Underwater video detection device based on the omnidirectional vision

An all-round visual and video detection technology, applied in color TV parts, TV system parts, TV and other directions, can solve problems such as poor practicability, limited visual range, and difficult continuous video detection.

Inactive Publication Date: 2008-01-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of the existing underwater video detection devices, such as limited visual range, difficulty in realiz

Method used

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  • Underwater video detection device based on the omnidirectional vision
  • Underwater video detection device based on the omnidirectional vision
  • Underwater video detection device based on the omnidirectional vision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Referring to Figures 1 to 6, an underwater video detection device based on omnidirectional vision includes a visual sensor 2 for acquiring video of the water area to be detected and a microprocessor 6 for image processing. The visual sensor is installed On the lifting mechanism, the output of the visual sensor 2 is connected to a cable 4 for transmitting underwater video data, and the cable 4 is connected to a microprocessor 6, and the microprocessor 6 is connected to a display device. Processor 6 comprises: image data reading module, is used for reading the video image information that passes from vision sensor; Image data file storage module, is used for video image information is saved in storage unit by file mode; Image output module, It is used to output the processed image information to the display device; the visual sensor 2 is an omnidirectional visual sensor, including a catadioptric mirror 9 for vertically downward, a transparent outer cover 13, and an imaging...

Embodiment 2

[0123] With reference to Fig. 7, the remaining structural features of this embodiment are the same as Embodiment 1, and this embodiment is aimed at the underwater video detection of wide water area, needs to have underwater illuminating lamp as illumination source, to guarantee to provide enough in the range of underwater photography. The intensity of illumination ensures the quality of underwater video images, and a halogen tungsten lamp can be selected as the light source. Underwater lamps can be composed of stainless steel watertight protective shell, quartz glass watertight light window, leakage protection device and so on. This underwater lamp has the characteristics of long life, reliable operation and stable performance, and can work continuously for a long time. The lamps 19 can be evenly arranged on the periphery between the cone-shaped suppressor and the ODVS upper cover, and the lighting lamps are inclined outward at an angle, so that there is sufficient illuminatio...

Embodiment 3

[0125] Referring to Figures 1 to 6, the rest of the technical solutions are the same as in Embodiment 1. For relatively medium and large underwater cameras, a lifting mechanism can be used to deploy and recover underwater lamps and underwater cameras. Adjust the depth of lamps and cameras in the water to obtain the best underwater camera field of view. The lifting mechanism is mainly composed of two parts: the underwater part and the winch above the water. The underwater part includes a fixed frame on which an underwater camera and lighting lamps etc. are fixed. The water part includes motors, winches, steering pulleys, etc. The winch is connected on the rotating shaft of the motor, and the steel cable (cable) spans a turning pulley to connect the lifting frame with the winch, so that by turning the winch, the lifting mechanism can be raised and lowered, so that the camera can be positioned at an accurate position.

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Abstract

The apparatus comprises; a vision sensor and a MPU. The vision sensor is mounted on a lighting mechanism; the output of the vision sensor is connected to the cable used for transmitting video data under water; the cable is connected to the MPU; said MPU is connected to the display device. The MPU comprises a video data reading module, a video data saving module, and a video data output module; the vision sensor is an omnirange vision sensor, and comprises: a reflector, a transparent housing and a camera unit; said reflect is a hyperbolic mirror; on the center point of the hyperbolic mirror, a compass used for indicating the camera shooting direction under water; the hyperbolic mirror, the axle of the compass, the camera, and the transparent housing all are in same central axis. The MPU also comprises: an azimuth angle direction determining module and a image spread processing module.

Description

(1) Technical field [0001] The invention belongs to the application of optical technology and computer image processing technology in underwater photography, and belongs to the equipment device for instantly obtaining clear images in the underwater environment, and is widely applicable to the detection of marine and land water resources, aquaculture, underwater exploration, and water conservancy facilities. Construction and monitoring of water wells and oil wells, salvage of sunken ships and oil deep sea operations, etc. (2) Background technology [0002] Ocean development, underwater operations, dam underwater inspections, underwater scientific experiments, and military applications often require underwater detection. With the development of modern sensor technology, especially solid-state optical devices, people can use underwater cameras to obtain High-definition video images. Underwater video has an intuitive, real-time sense of presence, and the camera has the advantag...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04N5/225
Inventor 汤一平汤晓燕陆海峰何祖灵
Owner ZHEJIANG UNIV OF TECH
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