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Omnibearing vision device

An all-round vision and all-round technology, applied in closed-circuit television systems, optics, instruments, etc., can solve the problem of low image observation accuracy

Inactive Publication Date: 2006-12-13
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 deficiencies of the existing omnidirectional cameras that have relatively large compression and deformation of the image and low observation accuracy, the present invention provides an omnidirectional visual device that acquires real-time omnidirectional images, does not deform the image, and has high observation accuracy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] refer to Figure 12 , Figure 13, Figure 15, Figure 18 , Figure 19 , an omnidirectional vision device, including an omnidirectional camera unit, a microprocessor 15, a memory 17, and a display device 16. The omnidirectional camera unit is composed of a reflective component, a lens 5, and an imaging component 12. The reflective component It is the hyperbolic mirror 1, the CCD camera 12 is located at the virtual focus position of the hyperbolic mirror 1, the lens 5 is located between the CCD camera 12 and the hyperbolic mirror 1, and the CCD camera 12 is connected to the hyperbolic mirror 1 through the video input interface. The microprocessor 15 is communicatively connected, the display device 16 is connected with the video output interface of the microprocessor 15, and the microprocessor 15 includes an image acquisition module 24 for collecting images obtained on the CCD camera unit 12; The image storage module 25 is used to store the collected image data in the memo...

Embodiment 2

[0155] refer to Figure 12 , Figure 14 , Figure 16, Figure 18 , Figure 19 , the basic composition and working principle of the optical part and the electronic part of the present embodiment are basically the same as those of the embodiment 1, the difference is that the image expansion processing module adopts the mapping matrix expansion algorithm: the expansion processing module 29 includes: the reading coordinate information unit 30, the The data such as the center coordinates of the circular omnidirectional image calculated in the above-mentioned initialization module and the radius of the inner and outer circles of the image are read into the program to expand the calculation; the mapping matrix expansion unit 39, the circular omnidirectional calculated in the above-mentioned initialization module is read into the program. The center coordinates of the image and the radius of the inner and outer circles of the image, and the center coordinates of the circular omnidire...

Embodiment 3

[0163] refer to Figure 12 , Figure 14 , Figure 17, Figure 18 , Figure 19 , the basic composition and basic principle of the optical part and the electronic part of this embodiment are basically the same as those of the embodiment 1, and the difference is that the image expansion processing module adopts a polar coordinate expansion algorithm: the expansion processing module 29 includes: the reading coordinate information unit 30, the The data such as the center coordinates of the circular omnidirectional image calculated in the above-mentioned initialization module and the radius of the inner and outer circles of the image are read into the program so as to expand the calculation; the polar coordinate expansion calculation unit 40 is used for the position of the center point of the omnidirectional image. And the inner diameter is r, the outer diameter is R, r is the radial length of any point on the image from the inner circle, and the azimuth angle is: β=tan -1 (y * / ...

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Abstract

The invention relates to an omnidirectional video device, which comprise an omnidirectional camera, a microprocessor, a memory, and a display. Wherein, the omnidirectional camera is formed by reflective element, lens, and camera element; the reflective element comprises hyperbola mirror; the CCD camera element is at the virtual focus of hyperbola mirror; the lens is between the CCD camera element and the hyperbola mirror; the camera element, via video input interface, is connected to the microprocessor; the display is connected to the video output interface of microprocessor; the microprocessor comprises an image collecting module, an image storage module, an image pretreatment module for removing noise and smoothening the collected image, an image initialization module, an image expanding processing module for using geometry conversation to unfold the round omnidirectional image obtained by CCD camera element into rectangle cylinder omnidirectional image, and an image output module. The invention can obtain real-time omnidirectional image in high accuracy, without torsion.

Description

(1) Technical field [0001] The invention belongs to the application of optical technology, computer image processing technology and network communication technology in the field of remote monitoring, and is mainly applicable to the monitoring of overspeed and traffic flow of road vehicles, and is also suitable for monitoring of some important places (such as monitoring of the elderly, Anti-theft surveillance in supermarkets and stores, etc.), video conferences, mobile phone cameras, introduction of city scenery and scenic spots, distance education, automatic navigation and positioning, and medical and other global video information acquisition fields. (2) Background technology [0002] Most imaging systems in use today consist of a video camera (or still camera) and a lens. The projection imaging model of most lenses is the perspective of a single projection center. Because of the limited size of the imaging device (such as a CCD array) and the obstruction around the lens w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N9/64G02B13/04
Inventor 汤一平唐轶峻叶永杰金顺敬
Owner ZHEJIANG UNIV OF TECH
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