CN114143489B - CTVS integrated head-up display recording video lossless calibration method - Google Patents
CTVS integrated head-up display recording video lossless calibration method Download PDFInfo
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- CN114143489B CN114143489B CN202111364927.XA CN202111364927A CN114143489B CN 114143489 B CN114143489 B CN 114143489B CN 202111364927 A CN202111364927 A CN 202111364927A CN 114143489 B CN114143489 B CN 114143489B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention discloses a CTVS integrated head-up display recording video lossless calibration method, which comprises the steps of reserving CTVS field allowance and pixel allowance according to maximum error, dynamically adjusting the actual position of an output image on an original frame through three-level calibration of CTVS adjustment calibration, head-up display adjustment calibration and on-board calibration, and outputting the image according to a final calibration result. The method can dynamically adjust the actual position of the output image on the original picture, so that the calibrated output image is complete and accurate, and black edges caused by translation or black frames caused by scaling do not exist.
Description
Technical Field
The invention belongs to the technical field of aviation, and particularly relates to a method for performing lossless calibration on a CTVS integrated head-up display recorded video.
Background
A Head Up Display (HUD) is a flight aid commonly used in aircraft at present. Head-up means that the pilot can see the important information needed without having to look down. Head-up displays were first found on military aircraft, reducing the frequency with which pilots need to look down at the instrument, avoiding interruption of attention to the road ahead and loss of awareness of state awareness (Situation Awareness). Because HUD's convenience and can improve flight safety, civil aircraft is also a lot of follow-up installation, has now gradually used in the automotive field.
As the main display of the aircraft cabin, the recorded video pictures output by the main display of the aircraft cabin simultaneously comprise the vision pictures and the character pictures displayed by the head-up display of the pilot, and the main display is important data information for evaluation, research and analysis after the training of the pilot. The integrity and the accuracy of the head-up recorded video picture play a vital role in analyzing and researching the flight state of the airplane and the operation information of pilots, and particularly play an important role in training and efficiency analysis of the airplane and the pilots and improving the flight capacity.
The common situation is that after the head-up display collects the CTVS (cockpit television camera) image, the CTVS image is overlapped with the head-up display character image, the calibration is carried out in the overlapping process, the image output by the CTVS is required to be subjected to center translation or scaling during the calibration, partial information is lost in the overlapping area, the head-up display recorded video is incomplete, and the precision is reduced. Therefore, the video recorded by the head-up display needs to be optimized, and the integrity and the accuracy of the video recorded by the head-up display are improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a CTVS integrated head-up display recording video lossless calibration method, which comprises the steps of reserving CTVS field of view allowance and pixel allowance according to maximum error, dynamically adjusting the actual position of an output image on an original frame through three-stage calibration of CTVS adjustment calibration, head-up display adjustment calibration and on-board calibration, and outputting the image according to a final calibration result. The method can dynamically adjust the actual position of the output image on the original picture, so that the calibrated output image is complete and accurate, and black edges caused by translation or black frames caused by scaling do not exist.
The technical scheme adopted by the invention for solving the technical problems comprises the following steps:
step 1: the reserved view field allowance of the CTVS optical lens is V & gtv 1+ V2+ V3, wherein V1 is the assembly view field error of the cockpit television camera, V2 is the assembly view field error of the cockpit television camera and the head-up display, and V3 is the calibration view field error of the head-up display;
step 2: the reserved pixel allowance of the CTVS image sensor is R more than or equal to r1+r2+r3, wherein R1 is the adjustment pixel error of the cockpit television camera, R2 is the assembly pixel error of the cockpit television camera and the head-up display, and R3 is the calibration pixel error of the head-up display;
step 3: calibrating the CTVS self-tuning error and storing error calibration parameters in the CTVS;
step 4: calibrating the adjustment errors of the CTVS and the head-up display, and storing error calibration parameters in the head-up display;
step 5: after the CTVS integrated head-up display is electrified, the CTVS reads the self error calibration parameters obtained in the step 3 and performs output image center calibration;
step 6: the head-up display reads the stored CTVS and head-up display assembly error calibration parameters, the parameters are sent to the CTVS through an RS485 bus, and the CTVS performs second calibration of the output image center according to the parameters;
step 7: the head-up display reads the target calibration parameters of the aircraft, sends the target calibration parameters to the CTVS through the RS485 bus, and the CTVS carries out third calibration of the center of the output image according to the parameters;
step 8: the head-up display acquires the video image which is output by CTVS and is calibrated for three times, and the video image is output and recorded after being overlapped with the head-up display character image;
step 9: and finishing the video lossless calibration of the head-up record.
Further, v1, v2, r1 and r2 are set in the process of product production and adjustment; v3 and r3 are obtained after matching and adjusting with the airplane after installation.
The beneficial effects of the invention are as follows:
the invention adopts a method of reserving the CTVS field allowance and the pixel allowance, wherein the reserved field allowance and the reserved pixel allowance are larger than the CTVS self-adjustment error, the CTVS and head-up display assembly error and the on-board target correction error, and the actual position of the output image on the original picture frame is dynamically adjusted through the three-stage calibration of CTVS adjustment, head-up display adjustment and on-board target correction, so that the image output after calibration is complete and accurate, and black edges caused by translation or black frames caused by scaling do not exist.
Drawings
Fig. 1 is a flowchart of a CTVS integrated head-up recording video lossless calibration method of the present invention.
Fig. 2 is a schematic diagram of an embodiment of a CTVS integrated head-up recording video lossless calibration method according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The invention aims to provide a CTVS integrated head-up display recorded video lossless calibration method, which improves the integrity and accuracy of the head-up display recorded video.
Referring to fig. 2, which is a schematic diagram of an embodiment of a CTVS integrated head-up recording video lossless calibration method according to the present invention, the circuit includes a head-up recording video processing circuit 1, a CTVS image processing circuit 2, a CTVS calibration parameter memory 3, and a head-up assembly calibration parameter memory 4.
As shown in fig. 1, a method for performing lossless calibration on CTVS integrated head-up recording video includes the following steps:
step 1: the reserved view field allowance of the CTVS optical lens is V & gtv 1+ V2+ V3, wherein V1 is the assembly view field error of the cockpit television camera, V2 is the assembly view field error of the cockpit television camera and the head-up display, and V3 is the calibration view field error of the head-up display;
step 2: the reserved pixel allowance of the CTVS image sensor is R more than or equal to r1+r2+r3, wherein R1 is the adjustment pixel error of the cockpit television camera, R2 is the assembly pixel error of the cockpit television camera and the head-up display, and R3 is the calibration pixel error of the head-up display;
step 3: calibrating the CTVS self-tuning error and storing error calibration parameters in the CTVS;
step 4: calibrating the adjustment errors of the CTVS and the head-up display, and storing error calibration parameters in the head-up display;
step 5: after the CTVS integrated head-up display is electrified, the CTVS reads the self error calibration parameters obtained in the step 3 and performs output image center calibration;
step 6: the head-up display reads the stored CTVS and head-up display assembly error calibration parameters, the parameters are sent to the CTVS through an RS485 bus, and the CTVS performs second calibration of the output image center according to the parameters;
step 7: the head-up display reads the target calibration parameters of the aircraft, sends the target calibration parameters to the CTVS through the RS485 bus, and the CTVS carries out third calibration of the center of the output image according to the parameters;
step 8: the head-up display acquires the video image which is output by CTVS and is calibrated for three times, and the video image is output and recorded after being overlapped with the head-up display character image;
step 9: and finishing the video lossless calibration of the head-up record.
Further, v1, v2, r1 and r2 are set in the process of product production and adjustment; v3 and r3 are obtained after matching and adjusting with the airplane after installation.
Claims (2)
1. The method for performing lossless calibration on the CTVS integrated head-up display recorded video is characterized by comprising the following steps of:
step 1: the reserved view field allowance of the CTVS optical lens is V & gtv 1+ V2+ V3, wherein V1 is the assembly view field error of the cockpit television camera, V2 is the assembly view field error of the cockpit television camera and the head-up display, and V3 is the calibration view field error of the head-up display;
step 2: the reserved pixel allowance of the CTVS image sensor is R more than or equal to r1+r2+r3, wherein R1 is the adjustment pixel error of the cockpit television camera, R2 is the assembly pixel error of the cockpit television camera and the head-up display, and R3 is the calibration pixel error of the head-up display;
step 3: calibrating the CTVS self-tuning error and storing error calibration parameters in the CTVS;
step 4: calibrating the adjustment errors of the CTVS and the head-up display, and storing error calibration parameters in the head-up display;
step 5: after the CTVS integrated head-up display is electrified, the CTVS reads the self error calibration parameters obtained in the step 3 and performs output image center calibration;
step 6: the head-up display reads the stored CTVS and head-up display assembly error calibration parameters, the parameters are sent to the CTVS through an RS485 bus, and the CTVS performs second calibration of the output image center according to the parameters;
step 7: the head-up display reads the target calibration parameters of the aircraft, sends the target calibration parameters to the CTVS through the RS485 bus, and the CTVS carries out third calibration of the center of the output image according to the parameters;
step 8: the head-up display acquires the video image which is output by CTVS and is calibrated for three times, and the video image is output and recorded after being overlapped with the head-up display character image;
step 9: and finishing the video lossless calibration of the head-up record.
2. The method for performing lossless calibration on a CTVS integrated head-up display recorded video according to claim 1, wherein v1, v2, r1, r2 are set in the process of product production and adjustment; v3 and r3 are obtained after matching and adjusting with the airplane after installation.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454496A (en) * | 1980-10-30 | 1984-06-12 | Mcdonald Douglas Corporation | Conformal head-up display |
| US7982959B1 (en) * | 2010-08-02 | 2011-07-19 | Matvey Lvovskiy | Head-up display |
| CN110864878A (en) * | 2019-10-14 | 2020-03-06 | 中国航空工业集团公司洛阳电光设备研究所 | Method for detecting display distortion of high-efficiency large-view-field flat display system |
| CN112284685A (en) * | 2020-10-29 | 2021-01-29 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display optical machine inspection bench calibration device and calibration method |
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2021
- 2021-11-17 CN CN202111364927.XA patent/CN114143489B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454496A (en) * | 1980-10-30 | 1984-06-12 | Mcdonald Douglas Corporation | Conformal head-up display |
| US7982959B1 (en) * | 2010-08-02 | 2011-07-19 | Matvey Lvovskiy | Head-up display |
| CN110864878A (en) * | 2019-10-14 | 2020-03-06 | 中国航空工业集团公司洛阳电光设备研究所 | Method for detecting display distortion of high-efficiency large-view-field flat display system |
| CN112284685A (en) * | 2020-10-29 | 2021-01-29 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display optical machine inspection bench calibration device and calibration method |
Non-Patent Citations (3)
| Title |
|---|
| SYNTHETIC VISION SYSTEM CALIBRATION FOR CONFORM PROJECTION ON THE PILOT’S HEAD-UP DISPLAY;S. Danilov;ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences;全文 * |
| 平视显示器视差自动测量技术研究;周凤利;徐丹;;光电工程(08);全文 * |
| 某型平视显示器检测仪的研制;张则源;航空维修与工程;全文 * |
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