CN206585674U - Geometric distortion correction device based on pixel Discrete Mapping set - Google Patents
Geometric distortion correction device based on pixel Discrete Mapping set Download PDFInfo
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- CN206585674U CN206585674U CN201621315577.2U CN201621315577U CN206585674U CN 206585674 U CN206585674 U CN 206585674U CN 201621315577 U CN201621315577 U CN 201621315577U CN 206585674 U CN206585674 U CN 206585674U
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Abstract
The utility model discloses the geometric distortion correction device based on pixel Discrete Mapping set, including main control computer, the distortion amount detection systems being connected with main control computer, the image generation system being connected with main control computer, with main control computer connect merge correction system, described distortion amount detection systems include image pick-up detection device, drive the level angle drive device and vertical angle drive device of image pick-up detection device, and level angle detection means and vertical angle detection means；Described main control computer is provided with distortion correction and supports software and pattern distortion fixed software, by run distortion correction support the coordinate pixel accordingly to be corrected to image generation system of software be demarcated as bright spot, by operation image distortions correction software sampling calculate demarcation bright spot video camera space angle and with the pixel request space angle it is poor.
Description
Technical field
The utility model is related to image domains, and pixel Discrete Mapping is based on more particularly, to a kind of off-axis virtual image display system
The geometric distortion correction device of set.
Background technology
Off-axis virtual image display system, also known as WIDE (Wide-Angle Infinity Display Equipment, wide-angle
Unlimited display device) system, on the back project screen that projector projects virtual image display system, back project screen, which is that rear projection type is unrestrained, to be thrown
Screen is penetrated, projection ray is changed into diffusing reflection light, theory structure such as Fig. 1 from directive property light.Human eye is at eyespot, is passed through
Collimating mirror see the image that is gone out by back project screen diffusing reflection collimating mirror rear into virtual image face.It can be produced in above-mentioned projecting light path
Raw various optical distortions, include the optical distortion of film collimating mirror generation, projector is thrown after curved surface the distortion on shielding and
Influence of eyespot change of pilot etc..
, can be by merging under the control of distortion correction computer to correct the various optical distortions occurred in projection process
Scenery picture pixel filling predistortion correction method realizes that principle such as Fig. 2 mainly has two kinds of type of skills at present：1st, regulation manually
Type.Manual adjustment type is the Compact Control and Compact researched and developed in 3d-perception companies of Norway
The distortion adjustment carried out under Designer Version software supports, this software is for the special of projector image distortion correction
Software.It uses manual regulation or the numerical calculation of limited pixel point, stretches image pixel.Other pixel single orders and second order letter
Number carries out interpolation processing, can realize distortion precorrection and the Fusion Edges function of image.Ordinary circumstance selects 5 × 5 points.Pass through
These points are adjusted, the result needed is adjusted to；2nd, the adjust automatically calculated based on screen shape and point of observation position distortion amount.It is right
In known to one or predictable optical projection system, in screen shape, projector relative position and observer's locality specific
In the case of, the method for the associated arguments that distorted by each pixel of mathematical derivation gives fusion distortion correction computer each pixel
Amount of distortion is simultaneously automatically adjusted, and then realizes visual system distortion correction.
There is certain limitation in the off-axis virtual image visual display system predistortion adjustment technology of above two：
Manual adjustment type.Although range estimation correction by hand can not consider the shape of screen, distortion size is directly visually observed,
And be corrected, but the amount of pixel it is very big (1024 × 768,1400 × 1050,1600 × 1200,1920 × 1080), artificial nothing
Method carries out accurate correction pixel-by-pixel, can bring local distortion of image etc., ground in-flight occurs and the phenomenon, shadow such as is distorted
Ring image effect.
The adjust automatically calculated based on screen shape and point of observation position distortion amount.The necessary bar of three of the distortion correction
Part：(1) the screen curve form that can be described with mathematics；(2) projector relative screen curve form position；(3) observer position.This
Three parameter set must possess and especially accurate, but when actual use particularly sets simulator, screen particularity
And the structural failure of the true shape of projection screen and the error of projector installation site can all make fusion correction inaccurate, three collection
Conjunction can not accurately be implemented.
The technical program is based on the secondary development under current existing distortion correction computer debugging function, it is proposed that one
Kind not by foundation of screen shape based on pixel Discrete Mapping set distortion correction method, by set up a set of automatic measurement and
The system for correcting each image pixel amount of distortion, is solved and manually adjusts and calculated based on screen shape and point of observation position distortion amount
Adjust automatically present in inaccurate correction the problems such as, be finally reached the accurate correction of amount of distortion.
Utility model content
To solve deficiency of the prior art, the purpose of this utility model is to provide a kind of based on pixel Discrete Mapping set
Geometric distortion correction device, it is intended to solve to manually adjust and based on screen shape and point of observation position distortion amount calculate it is automatic
Present in adjustment the problems such as inaccurate correction, the accurate correction of amount of distortion is finally reached.
To achieve the above object, the technical solution of the utility model is：Geometric distortion based on pixel Discrete Mapping set
Means for correcting, including main control computer, the distortion amount detection systems being connected with main control computer, the figure being connected with main control computer
As generation system, the system of correction that merges with main control computer connection, described distortion amount detection systems include camera detection and filled
Put, drive the level angle drive device and vertical angle drive device of image pick-up detection device, and level angle detection means
With vertical angle detection means；Described main control computer is provided with distortion correction and supports software and pattern distortion fixed software,
Support the coordinate pixel accordingly to be corrected to image generation system of software to be demarcated as bright spot by running distortion correction, pass through fortune
Row pattern distortion fixed software sampling calculate demarcation bright spot video camera space angle and with the pixel request space
Differential seat angle.
Further, by operation image distortions correction software so as to obtain the pixel of image generation system generation with being somebody's turn to do
Pixel requirement space angle difference and pixel it is only poor, and the distortion offset of all pixels is formed into matrix, and transmit
To fusion correction system.
Preferably, described Matrix Formula：In formula：Xij, YijFor each detected pixel
In distortion offset both horizontally and vertically,
In order to more intuitively reflect pattern distortion situation, described distortion amount detection systems are placed on pilot's observing eye
On position.
Preferably, described level angle drive device is 30 arcs point, horizontal angle with vertical angle drive device precision
It is 2 arcs point to spend detection means and vertical angle detection means precision, and image pick-up detection device precision is 2 pixels/arc point.
The beneficial effects of the utility model：
1st, the device incorporates the system such as automatic measurement and the correction of image pixel amount of distortion, fully used optics to show,
The technology such as flight simulation and image recognition, it is achieved thereby that correction overall process is read by computer control from amount of distortion,
Error is reduced, while also simplify operation, substantial amounts of manpower is saved；
2nd, it is affected by the external environment small, for the dependence of the projector in virtual image shadow casting technique, projection screen and eyespot etc.
Property is smaller；
3rd, the distortion amount detection systems in device are placed on pilot's observing eye position of setting, for pattern distortion situation
Reflection is more directly perceived；
4th, system can realize real time correction by automatically controlling, measuring and data are transmitted and adjusted, it is settable follow it is winged
The operation of office staff, has advantage in terms of scene conversion；
5th, system modular, can accordingly be adjusted according to the Later development of simulator environment and virtual image display system
Whole, function expansibility is strong.
Brief description of the drawings
Fig. 1 is the principle assumption diagram of off-axis virtual image display system.
Fig. 2 is the schematic diagram of scenery picture pixel filling predistortion correction method.
Fig. 3 is the structure principle chart of distortion amount detection systems of the present utility model.
Fig. 4 is structure principle chart of the present utility model.
Embodiment
As shown in Figure 3,4, the geometric distortion correction device based on pixel Discrete Mapping set, including main control computer, with
The distortion amount detection systems of main control computer connection, the image generation system being connected with main control computer connects with main control computer
The fusion correction system connect, described distortion amount detection systems are placed on pilot's observing eye position, described amount of distortion detection
System includes image pick-up detection device, drives the level angle drive device and vertical angle drive device of image pick-up detection device, with
And level angle detection means and vertical angle detection means, described level angle drive device and vertical angle drive device
Precision is 30 arcs point, and level angle detection means and vertical angle detection means precision are 2 arcs point, and image pick-up detection device precision is
2 pixels/arc point；Described main control computer is provided with distortion correction and supports software and pattern distortion fixed software, passes through operation
Distortion correction supports the coordinate pixel accordingly to be corrected to image generation system of software to be demarcated as bright spot, abnormal by operation image
Become amendment software sampling calculate demarcation bright spot video camera space angle and with the pixel request space angle it is poor.
Main control computer of the present utility model supports software by running distortion correction, and image generation system will accordingly be repaiied
Positive coordinate pixel is demarcated as bright spot, and drives camera detection by level angle drive device and vertical angle drive device
Device rotational angle simultaneously reads image with video camera, and calculating demarcation bright spot by operation image distortions correction software sampling is taking the photograph
The space angle of camera and with the pixel request space angle it is poor so that obtain image generation system generation pixel with
The pixel requirement space angle difference and pixel it is only poor, according to Matrix Formula：In formula：
Xij, YijIt is each detected pixel in distortion offset both horizontally and vertically, the distortion offset of all pixels is formed
Matrix, and fusion correction system is sent to, realize the predistortion correction of realtime graphic.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modification, equivalent substitution or improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
1. the geometric distortion correction device based on pixel Discrete Mapping set, it is characterised in that including main control computer, with master control
The distortion amount detection systems of computer connection, the image generation system being connected with main control computer is connected with main control computer
Correction system is merged, described distortion amount detection systems include image pick-up detection device, drive the level angle of image pick-up detection device
Drive device and vertical angle drive device, and level angle detection means and vertical angle detection means；Described master control
Computer is provided with distortion correction and supports software and pattern distortion fixed software, supports software to image by running distortion correction
The coordinate pixel accordingly to be corrected of generation system is demarcated as bright spot, and bid is calculated by operation image distortions correction software sampling
Determine bright spot the space angle of video camera and with the pixel request space angle it is poor.
2. the geometric distortion correction device according to claim 1 based on pixel Discrete Mapping set, described amount of distortion
Detecting system is placed on pilot's observing eye position.
3. the geometric distortion correction device according to claim 1 based on pixel Discrete Mapping set, it is characterised in that institute
The level angle drive device stated is 30 arcs point, level angle detection means and vertical angle with vertical angle drive device precision
Detection means precision is 2 arcs point, and image pick-up detection device precision is 2 pixels/arc point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621315577.2U CN206585674U (en) | 2016-12-02 | 2016-12-02 | Geometric distortion correction device based on pixel Discrete Mapping set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621315577.2U CN206585674U (en) | 2016-12-02 | 2016-12-02 | Geometric distortion correction device based on pixel Discrete Mapping set |
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| CN206585674U true CN206585674U (en) | 2017-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712640A (en) * | 2018-04-23 | 2018-10-26 | 长春理工大学 | Color compensating maps the expectation visual image reduction method in domain |
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2016
- 2016-12-02 CN CN201621315577.2U patent/CN206585674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712640A (en) * | 2018-04-23 | 2018-10-26 | 长春理工大学 | Color compensating maps the expectation visual image reduction method in domain |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20201202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |