CN113459938B - Vehicle lamp enhanced identification system and method - Google Patents
Vehicle lamp enhanced identification system and method Download PDFInfo
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- CN113459938B CN113459938B CN202110763150.8A CN202110763150A CN113459938B CN 113459938 B CN113459938 B CN 113459938B CN 202110763150 A CN202110763150 A CN 202110763150A CN 113459938 B CN113459938 B CN 113459938B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/31—Atmospheric conditions
- B60Q2300/312—Adverse weather
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/31—Atmospheric conditions
- B60Q2300/314—Ambient light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/32—Road surface or travel path
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention provides a car light enhancement identification system and a car light enhancement identification method, wherein the system comprises an environmental condition discrimination module, a spectrum database module, a contrast module, a main control module and a multi-light source module; the method comprises the following steps of collecting environmental scenes of roads around a vehicle and an object to be illuminated by an environmental condition discrimination module, judging weather types, identifying characteristic spectrum transmittance corresponding to weather, and determining spectral reflection characteristics of the roads and the object to be illuminated; storing a plurality of characteristic spectrums which are set on different roads or illuminated objects and can form characteristic identification effects by a spectrum database module; analyzing contrast difference under the combined action of ambient light and different characteristic spectrums by using a contrast module according to the spectral reflection characteristics of the road and the illuminated object to obtain the recognition degrees of the corresponding road and the illuminated object; the main control module selects the characteristic spectrum with the maximum identification degree to form a composite light illumination scheme of the multi-characteristic spectrum of the road and the illuminated object, and the multi-light source module performs composite light illumination.
Description
Technical Field
The invention relates to the technical field of vehicle lamp illumination, in particular to a vehicle lamp enhanced identification system and a vehicle lamp enhanced identification method.
Background
The car light system is more and more intelligent, not only can accomplish basic lighting needs, has also added various projection instruction functions, has self-adaptation road form function simultaneously, carries out the light shape and changes. However, in the application of the vehicle lamp system, the light color of the light source is fixed and is mainly divided according to the color temperature, and the characteristics of the illuminated object are not considered when the vehicle lamp system is used for ambient lighting.
The spectral characteristics are introduced into the car lamp lighting system, spectral adjustment can be carried out according to changes of the lighting environment, weather changes and the like, a better light color identification effect is formed, human eye identification is enhanced, and driving safety and comfort are guaranteed. While reducing the adverse effects of light on the environment.
Disclosure of Invention
In order to solve the technical problem, the invention provides an automobile lamp enhancement identification system which comprises an environmental condition discrimination module, a spectrum database module, a contrast module, a main control module and a multi-light source module;
the environment condition screening module is connected with the contrast module and is used for collecting environment scenes of roads around the vehicle and the illuminated object, judging weather types, identifying the characteristic spectrum transmittance corresponding to the weather types and determining the spectrum reflection characteristics of the roads and the illuminated object;
the spectrum database module is used for storing spectrum data, the spectrum data comprises a plurality of set characteristic spectrums, and the characteristic spectrums can form characteristic identification effects when being irradiated on different roads or irradiated objects;
the contrast module is connected with the spectrum database module and is used for analyzing contrast difference of the road and the illuminated object under the combined action of ambient light and different characteristic spectra respectively according to the spectrum reflection characteristics of the road and the illuminated object to obtain the identification degrees of the corresponding road and the illuminated object;
the main control module is respectively connected with the contrast module and the multi-light source module, and is used for selecting characteristic spectrums corresponding to the road and the illuminated object when the recognition degree is the maximum, forming a composite light illumination scheme of the multi-characteristic spectrums of the road and the illuminated object in the range of the vehicle lamp illumination area, and generating a control instruction;
and the multi-photochromic light source module adopts composite light illumination formed by multi-characteristic spectrums according to the control instruction.
Optionally, the environmental scene includes a weather parameter, a road surface parameter, a parameter of an object to be illuminated, and an environmental light parameter, and spectral reflection characteristics of the road and the object to be illuminated are determined; the weather parameters comprise rainy days, foggy days, snowy days and corresponding spectral transmittance, the road surface parameters comprise road surface types and light reflection characteristics thereof, the illuminated object parameters comprise illuminated object types and light reflection characteristics thereof, and the environment light parameters comprise peripheral illumination light and light colors thereof.
Optionally, the spectrum data stored in the spectrum database module includes road spectrum reflection curve data, illuminated object spectrum reflection curve data and snow spectrum reflection curve data; the road spectral reflection curve data comprises various types of road spectral reflection curve data and road marker spectral reflection curve data.
Optionally, the spectrum data stored in the spectrum database module further includes penetration data corresponding to each characteristic spectrum in rainy days, foggy days and snowy days.
Optionally, the characteristic spectrum is a monochromatic spectrum with a half-wave width of less than or equal to 50 nm.
Optionally, the contrast includes a luminance contrast, a chrominance contrast, and a sub-band spectral contrast, and the sub-band spectral contrast includes a characteristic spectral contrast.
Optionally, the sub-band spectral contrast includes a spectral contrast of each wavelength band of 380-780 nm.
Optionally, the characteristic spectrum contrast refers to a contrast presented by the characteristic spectrum corresponding to the spectral band region.
Optionally, the characteristic spectral contrast includes a spectral band region contrast formed by synthesizing a plurality of characteristic spectra.
Optionally, the identification degree is calculated by the following formula:
D＝f(CL,CC,CS)
in the above formula, D represents the degree of recognition of the road and the object to be photographed; f (C)L,CC) Representing a function relating luminance contrast and chrominance contrast; cLRepresenting the luminance contrast of the road and the illuminated object; cCRepresenting the colorimetric contrast of the road and the illuminated object; cSRepresenting the spectral contrast of the sub-band.
Optionally, the main control module is connected with a speed sensor and a positioning module, the speed sensor is used for acquiring a motion vector of the vehicle relative to the object to be illuminated, the positioning module establishes a dynamic coordinate system moving along with the vehicle to perform coordinate positioning on the road and the object to be illuminated, the main control module performs motion analysis according to the reaction time, the speed vector and the motion vector to perform motion compensation on the coordinate positioning of the object to be illuminated according to an analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multi-feature spectra of the road and the object to be illuminated is formed within the range of the vehicle lamp illumination area.
The invention also provides a car lamp enhanced identification method, which comprises the following steps:
s100, collecting environmental scenes of roads around the vehicle and an object to be illuminated, judging a weather type, and identifying each characteristic spectrum transmittance corresponding to the weather type;
s200, determining spectral reflection characteristics of a road and an illuminated object;
s300, according to the spectral reflection characteristics of the road and the illuminated object, the contrast difference of the road and the illuminated object under the combined action of the ambient light and different characteristic spectra is analyzed, and the recognition degree of the corresponding road and the illuminated object is obtained;
s400, selecting characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is the maximum, and forming a composite light illumination scheme of the multiple characteristic spectrums of the road and the object to be illuminated in the range of the vehicle lamp illumination area;
s500, composite light illumination formed by multi-feature spectrums is adopted.
Optionally, in step S300, the contrast includes a luminance contrast, a chrominance contrast, and a sub-band spectral contrast, and the sub-band spectral contrast includes a characteristic spectral contrast.
Optionally, in the step S300, the sub-band spectral contrast includes a spectral contrast of each wavelength band of 380-780 nm.
Optionally, in step S300, the characteristic spectrum contrast refers to a contrast presented in a spectrum region corresponding to the characteristic spectrum.
Optionally, in step S300, the characteristic spectral contrast includes a spectral band region contrast formed by synthesizing a plurality of characteristic spectra.
Optionally, the identification degree is calculated by the following formula:
D＝f(CL,CC,CS)
in the above formula, D represents the degree of recognition of the road and the object to be photographed; f (C)L,CC) Representing a function relating luminance contrast and chrominance contrast;CLrepresenting the luminance contrast of the road and the illuminated object; cCRepresenting the colorimetric contrast of the road and the illuminated object; cSRepresenting the spectral contrast of the sub-band.
Optionally, in step S100, a vehicle speed vector and a motion vector relative to the object to be photographed are collected, a dynamic coordinate system moving along with the vehicle is established, and coordinate positioning is performed on the road and the object to be photographed; in the step S400, motion analysis is performed according to the reaction time, the velocity vector, and the motion vector, and motion compensation is performed on the coordinate location of the illuminated object according to the analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multiple characteristic spectra of the road and the illuminated object is formed within the range of the vehicle lamp illumination area.
According to the vehicle lamp enhancement identification system and method, the environmental conditions of the road around the vehicle and the illuminated object are collected through the environmental condition discrimination module, the weather type is judged, the characteristic spectrum transmittance corresponding to the weather type is identified, and the spectrum reflection characteristics of the road and the illuminated object are determined; the spectrum database module stores spectrum data, the contrast module analyzes contrast differences of the road and the illuminated object under the combined action of ambient light and different characteristic spectrums stored by the spectrum database module according to the spectrum reflection characteristics of the road and the illuminated object, the contrast comprises the brightness contrast and the chromaticity contrast of the road and the illuminated object, the identification degrees of the road and the illuminated object corresponding to each combination scheme are obtained according to different combined schemes formed by the ambient light and the different characteristic spectrums, and the contrast differences of the road and the illuminated object under different combination conditions can be reflected; the main control module selects characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is the maximum, and a composite light illumination scheme of the multi-characteristic spectrums of the road and the object to be illuminated is formed in the range of the vehicle lamp illumination area; the multi-light source module adopts composite light illumination formed by multiple characteristic spectrums, namely the car light adopts different characteristic spectrums for illumination of a road and an illuminated object in an illumination area range, the car light emits composite light formed by multiple characteristic spectrums at the same moment, and the characteristic spectrums for illumination of different areas (the road and the illuminated object) are different, so that the contrast ratio of the road and the illuminated object in visual observation is enhanced, the visual identifiability of the road and the illuminated object is improved, and the driving safety is guaranteed.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an enhanced identification system for a vehicle lamp according to an embodiment of the present invention;
fig. 2 is a flowchart of an embodiment of an enhanced identification method for a vehicle lamp according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1, an embodiment of the present invention provides an enhanced identification system for a vehicle lamp, including an environmental condition screening module 10, a spectrum database module 20, a contrast module 30, a main control module 40, and a multi-light source module 50;
the environment condition screening module 10 is connected with the contrast module 30, and the environment condition screening module 10 is used for collecting environment scenes of roads around the vehicle and the illuminated object, judging weather types, identifying the characteristic spectrum transmittance corresponding to the weather types, and determining the spectrum reflection characteristics of the roads and the illuminated object;
the spectrum database module 20 is used for storing spectrum data, wherein the spectrum data comprises a plurality of set characteristic spectrums, and the characteristic spectrums can form characteristic identification effects when being irradiated on different roads or irradiated objects;
the contrast module 30 is connected with the spectrum database module 20, and the contrast module 30 is used for analyzing contrast differences of the road and the illuminated object under the combined action of the ambient light and different characteristic spectra respectively according to the spectrum reflection characteristics of the road and the illuminated object to obtain the identification degrees of the corresponding road and the illuminated object;
the main control module 40 is respectively connected with the contrast module 30 and the multi-light source module 50, and the main control module 40 is configured to select characteristic spectra corresponding to the road and the illuminated object when the recognition degree is the maximum, form a composite light illumination scheme of the multi-characteristic spectra of the road and the illuminated object in the range of the vehicle light illumination area, and generate a control instruction;
and the multi-photochromic light source module adopts composite light illumination formed by multi-characteristic spectrums according to the control instruction.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the environmental condition discrimination module is used for collecting environmental scenes of roads around the vehicle and the illuminated object, judging the weather type, identifying the characteristic spectrum transmittance corresponding to the weather type and determining the spectrum reflection characteristics of the roads and the illuminated object; the spectrum database module stores spectrum data of a plurality of set characteristic spectrums, wherein the characteristic spectrums can be monochromatic light spectrums or polychromatic light fusion spectrums; the contrast module analyzes the contrast difference of the road and the object to be illuminated under the combined action of the ambient light and different characteristic spectrums stored in the spectrum database module according to the spectrum reflection characteristics of the road and the object to be illuminated, the contrast comprises the brightness contrast and the chromaticity contrast of the road and the object to be illuminated, the identification degrees of the road and the object to be illuminated corresponding to each combination scheme are obtained aiming at different combined schemes formed by the ambient light and different characteristic spectrums, and the contrast difference of the road and the object to be illuminated under different combination conditions can be reflected; the main control module selects characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is the maximum, and a composite light illumination scheme of the multi-characteristic spectrums of the road and the object to be illuminated is formed in the range of the vehicle lamp illumination area; the multi-light source module adopts composite light illumination formed by multiple characteristic spectrums of a composite light illumination scheme, namely, the car light adopts different characteristic spectrums for illumination of a road and an illuminated object in an illumination area range, composite light formed by multiple characteristic spectrums is emitted by the car light at the same time, and the illumination characteristic spectrums of different areas (the road and the illuminated object) are different, so that the contrast of the road and the illuminated object observed by naked eyes is enhanced, the naked eye identifiability of the road and the illuminated object is improved, and the driving safety is ensured; the illuminated objects refer to various objects existing on the peripheral road surface in the driving process, including other vehicles, obstacles and the like, so that different illumination characteristic spectrums can be adopted for different illuminated objects, namely on the basis of analyzing the contrast difference between the road and the illuminated objects, the contrast difference of the different illuminated objects under the combined action of ambient light and different characteristic spectrums is also analyzed, the identification degrees of the different illuminated objects are obtained, and the optimal composite light illumination scheme with multiple characteristic spectrums can be selected in a mode that the identification degree is not less than a set identification degree threshold value.
In one embodiment, the environment scene comprises weather parameters, road surface parameters, illuminated object parameters and environment light parameters, and spectral reflection characteristics of the road and the illuminated object are determined; the weather parameters comprise rainy days, foggy days, snowy days and corresponding spectral transmittance, the road surface parameters comprise road surface types and light reflection characteristics thereof, the illuminated object parameters comprise illuminated object types and light reflection characteristics thereof, and the environment light parameters comprise peripheral illumination light and light colors thereof.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme defines the collected environment scene, and comprises weather parameters, road surface parameters, parameters of an object to be illuminated and environment light parameters, spectral reflection characteristics of the road and the object to be illuminated can be determined according to the road surface parameters and the parameters of the object to be illuminated, corresponding spectral transmittance can be determined according to severe weather such as rainy days, foggy days, snowy days and the like, and peripheral illumination light and light color thereof can be obtained according to the environment light parameters, so that the spectrum of the environment light is obtained, and a data basis is provided for the analysis of a combination scheme of the combined action of the environment light and different characteristic spectra in the follow-up simulation.
In one embodiment, the spectrum database module stores spectrum data including road spectrum reflection curve data, illuminated object spectrum reflection curve data and snow spectrum reflection curve data; the road spectral reflection curve data comprises various types of road spectral reflection curve data and road marker spectral reflection curve data.
The working principle and the beneficial effects of the technical scheme are as follows: the spectral data prestored in the spectral database module further comprises road spectral reflection curve data, illuminated object spectral reflection curve data and snow spectral reflection curve data, wherein the road spectral reflection curve data comprises various types of road spectral reflection curve data and various road marker spectral reflection curve data, and the illuminated object spectral reflection curve data comprises the spectral reflection curve data of various illuminated objects (including various types of vehicles, barriers and other obstacles); therefore, after the road and the illuminated object are identified, the spectral reflection characteristics of the road and the illuminated object can be determined by comparing the data in the database.
In one embodiment, the spectrum data stored by the spectrum database module further comprises penetration data corresponding to each characteristic spectrum in rainy days, foggy days and snowy days; the characteristic spectrum is a monochromatic light spectrum with the half-wave width less than or equal to 50 nm; the contrast comprises a brightness contrast, a chromaticity contrast and a sub-band spectral contrast, the sub-band spectral contrast comprises a characteristic spectral contrast, and the sub-band spectral contrast comprises a spectral contrast of each wavelength band of 380-780 nm; the characteristic spectrum contrast refers to the contrast presented by a spectrum region corresponding to the characteristic spectrum; the characteristic spectrum contrast comprises a spectrum band region contrast formed by synthesizing a plurality of characteristic spectrums.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the spectrum data pre-stored in the spectrum database module also comprises penetration data corresponding to each characteristic spectrum under the conditions of rainy days, foggy days and snowy days; each characteristic spectrum with penetration data not less than a penetration threshold value under corresponding weather can be selected for performing a combined scheme of coaction with ambient light to perform contrast difference analysis, so that composite light illumination formed by multiple characteristic spectrums of the composite light illumination scheme is ensured to have enough penetrability so as to achieve long-distance illumination, the illumination observation range in driving is increased, and the driving safety is guaranteed; and after the contrast difference analysis is carried out, selecting a plurality of composite light illumination schemes with multiple characteristic spectrums with the largest recognition degrees according to the recognition degree sequence, and carrying out spectrum penetrability analysis on the selected schemes, wherein the scheme with the best penetrability is used as the finally selected vehicle lamp illumination scheme.
In one embodiment, the degree of identification is calculated by the following formula:
D＝f(CL,CC,CS)
in the above formula, D represents the degree of recognition of the road and the object to be photographed; f (C)L,CC) Representing a function relating luminance contrast and chrominance contrast; cLRepresenting the luminance contrast of the road and the illuminated object; cCRepresenting the colorimetric contrast of the road and the illuminated object; cSRepresenting the spectral contrast of the sub-band.
The working principle and the beneficial effects of the technical scheme are as follows: the main control module of the scheme calculates the recognition degree of the road and the object to be illuminated through the formula, the recognition degree in the formula is a function of the brightness contrast ratio and the chromaticity contrast ratio of the road and the object to be illuminated, the brightness contrast ratio and the chromaticity contrast ratio of the illumination spectrum which has great influence on the difficulty and the easiness of identifying the object are comprehensively considered, the quantitative calculation of the recognition degree is formed, and the intuitive numerical value comparison can be carried out through the calculation result, so that the spectrum control of the car lamp illumination is more accurate.
In one embodiment, the main control module is connected with a speed sensor and a positioning module, the speed sensor is used for collecting a movement vector of a vehicle relative to an object to be illuminated, the positioning module establishes a dynamic coordinate system moving along with the vehicle to perform coordinate positioning on a road and the object to be illuminated, the main control module performs motion analysis according to reaction time, the speed vector and the movement vector to perform motion compensation on the coordinate positioning of the object to be illuminated according to an analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multi-feature spectra of the road and the object to be illuminated is formed in the range of an illumination area of the vehicle lamp.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme is characterized in that a speed sensor and a positioning module are arranged, the speed sensor is used for collecting the movement vector of a vehicle relative to an object to be irradiated, the positioning module establishes a dynamic coordinate system moving along with the vehicle, coordinates of a road and the object to be irradiated are positioned, the main control module performs motion analysis according to reaction time, the speed vector and the movement vector, the analysis result performs motion compensation on the coordinate positioning of the object to be irradiated, on the basis of the motion compensation, a composite light illumination scheme of multi-characteristic spectrums of the road and the object to be irradiated is formed in the range of an irradiation area of a vehicle lamp, if the system needs the reaction time, the position of the vehicle relative to the object to be irradiated after the reaction time changes, the object to be irradiated can be positioned and deviated, so that the characteristic spectrum which should be irradiated on a certain object to be irradiated can not be completely irradiated on the object to be irradiated, the identification enhancement effect is influenced or weakened, the adverse influence or weakening effect caused by positioning deviation due to vehicle movement can be eliminated through the scheme, and the effectiveness of the composite light scheme of the vehicle light spectrum is guaranteed.
As shown in fig. 2, an embodiment of the present invention provides an enhanced identification method for a vehicle lamp, including the following steps:
s100, collecting environmental scenes of roads around the vehicle and an object to be illuminated, judging a weather type, and identifying each characteristic spectrum transmittance corresponding to the weather type;
s200, determining spectral reflection characteristics of a road and an illuminated object;
s300, according to the spectral reflection characteristics of the road and the illuminated object, the contrast difference of the road and the illuminated object under the combined action of the ambient light and different characteristic spectra is analyzed, and the recognition degree of the corresponding road and the illuminated object is obtained;
s400, selecting characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is the maximum, and forming a composite light illumination scheme of the multiple characteristic spectrums of the road and the object to be illuminated in the range of the vehicle lamp illumination area;
s500, composite light illumination formed by multi-feature spectrums is adopted.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the weather types including sunny days and severe weather such as rainy days, foggy days and snowy days are judged by collecting environmental scenes of roads around the vehicle and the illuminated object, the characteristic spectrum transmittance corresponding to the weather types is identified, and the spectrum reflection characteristics of the roads and the illuminated object are determined; according to the spectral reflection characteristics of the road and the illuminated object, the contrast difference of the road and the illuminated object under the combined action of the ambient light and the stored different characteristic spectra is analyzed, the contrast comprises the brightness contrast and the chromaticity contrast of the road and the illuminated object, the identification degrees of the road and the illuminated object corresponding to each combination scheme are obtained aiming at different combined schemes formed by the ambient light and the different characteristic spectra, and the contrast difference of the road and the illuminated object under different combination conditions can be reflected; selecting characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is maximum, and forming a composite light illumination scheme of the multi-characteristic spectrums of the road and the object to be illuminated in the range of the vehicle lamp illumination area; composite light illumination formed by multiple characteristic spectrums of the composite light illumination scheme is adopted, namely, different characteristic spectrums are adopted for illuminating a road and an object to be illuminated by a vehicle lamp in an illumination area range, composite light formed by multiple characteristic spectrums is emitted by the vehicle lamp at the same time, and the characteristic spectrums for illumination in different areas (the road and the object to be illuminated) are different, so that the contrast ratio of the road and the object to be illuminated in visual observation is enhanced, the visual identifiability of the road and the object to be illuminated is improved, and the driving safety is guaranteed; the illuminated objects refer to various objects existing on the peripheral road surface in the driving process, including other vehicles, obstacles and the like, so that different illumination characteristic spectrums can be adopted for different illuminated objects, namely on the basis of analyzing the contrast difference between the road and the illuminated objects, the contrast difference of the different illuminated objects under the combined action of ambient light and different characteristic spectrums is also analyzed, the identification degrees of the different illuminated objects are obtained, and the optimal composite light illumination scheme with multiple characteristic spectrums can be selected in a mode that the identification degree is not less than a set identification degree threshold value.
In one embodiment, the contrast includes a luminance contrast, a chrominance contrast, and a sub-band spectral contrast, the sub-band spectral contrast includes a characteristic spectral contrast, and the sub-band spectral contrast includes a spectral contrast of each wavelength band of 380-780 nm; the characteristic spectrum contrast refers to the contrast presented by a spectrum region corresponding to the characteristic spectrum; the characteristic spectrum contrast comprises a spectrum band region contrast formed by synthesizing a plurality of characteristic spectrums.
The working principle and the beneficial effects of the technical scheme are as follows: according to the scheme, the brightness contrast, the chromaticity contrast and the sub-band spectrum contrast are respectively compared, wherein the spectrum contrast is compared with each wavelength band, and various contrast differences are examined, so that the judgment is more accurate, and the misjudgment rate is lower.
In one embodiment, in step S300, the identification degree is calculated by the following formula:
D＝f(CL,CC,CS)
in the above formula, D represents the degree of recognition of the road and the object to be photographed; f (C)L,CC) Representing a function relating luminance contrast and chrominance contrast; cLRepresenting the luminance contrast of the road and the illuminated object; cCRepresenting the colorimetric contrast of the road and the illuminated object; cSRepresenting the spectral contrast of the sub-band.
The working principle and the beneficial effects of the technical scheme are as follows: the main control module of the scheme calculates the recognition degree of the road and the object to be illuminated through the formula, the recognition degree in the formula is a function of the brightness contrast ratio and the chromaticity contrast ratio of the road and the object to be illuminated, the brightness contrast ratio and the chromaticity contrast ratio of the illumination spectrum which has great influence on the difficulty and the easiness of identifying the object are comprehensively considered, the quantitative calculation of the recognition degree is formed, and the intuitive numerical value comparison can be carried out through the calculation result, so that the spectrum control of the car lamp illumination is more accurate.
In one embodiment, in step S100, a vehicle speed vector and a motion vector relative to the object to be photographed are collected, a dynamic coordinate system moving along with the vehicle is established, and coordinate positioning is performed on the road and the object to be photographed; in the step S400, motion analysis is performed according to the reaction time, the velocity vector, and the motion vector, and motion compensation is performed on the coordinate location of the illuminated object according to the analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multiple characteristic spectra of the road and the illuminated object is formed within the range of the vehicle lamp illumination area.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme is characterized in that a speed sensor and a positioning module are arranged, the speed sensor is used for collecting the movement vector of a vehicle relative to an object to be irradiated, the positioning module establishes a dynamic coordinate system moving along with the vehicle, coordinates of a road and the object to be irradiated are positioned, the main control module performs motion analysis according to reaction time, the speed vector and the movement vector, the analysis result performs motion compensation on the coordinate positioning of the object to be irradiated, on the basis of the motion compensation, a composite light illumination scheme of multi-characteristic spectrums of the road and the object to be irradiated is formed in the range of an irradiation area of a vehicle lamp, if the system needs the reaction time, the position of the vehicle relative to the object to be irradiated after the reaction time changes, the object to be irradiated can be positioned and deviated, so that the characteristic spectrum which should be irradiated on a certain object to be irradiated can not be completely irradiated on the object to be irradiated, the identification enhancement effect is influenced or weakened, the adverse influence or weakening effect caused by positioning deviation due to vehicle movement can be eliminated through the scheme, and the effectiveness of the composite light scheme of the vehicle light spectrum is guaranteed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A car light enhancement identification system is characterized by comprising an environmental condition discrimination module, a spectrum database module, a contrast module, a master control module and a multi-light source module;
the environment condition screening module is connected with the contrast module and is used for collecting environment scenes of roads around the vehicle and the illuminated object, judging weather types, identifying the characteristic spectrum transmittance corresponding to the weather types and determining the spectrum reflection characteristics of the roads and the illuminated object;
the spectrum database module is used for storing spectrum data, the spectrum data comprises a plurality of set characteristic spectrums, and the characteristic spectrums can form characteristic identification effects when being irradiated on different roads or irradiated objects;
the contrast module is connected with the spectrum database module and is used for analyzing contrast difference of the road and the illuminated object under the combined action of ambient light and different characteristic spectra respectively according to the spectrum reflection characteristics of the road and the illuminated object to obtain the identification degrees of the corresponding road and the illuminated object;
the main control module is respectively connected with the contrast module and the multi-light source module, and is used for selecting characteristic spectrums corresponding to the road and the illuminated object when the recognition degree is the maximum, forming a composite light illumination scheme of the multi-characteristic spectrums of the road and the illuminated object in the range of the vehicle lamp illumination area, and generating a control instruction;
and the multi-photochromic light source module adopts composite light illumination formed by multi-characteristic spectrums according to the control instruction.
2. The vehicle light enhancement identification system according to claim 1, wherein the environmental scene comprises weather parameters, road surface parameters, illuminated object parameters and ambient light parameters, spectral reflectance characteristics of the road and illuminated object are determined; the weather parameters comprise rainy days, foggy days, snowy days and corresponding spectral transmittance, the road surface parameters comprise road surface types and light reflection characteristics thereof, the illuminated object parameters comprise illuminated object types and light reflection characteristics thereof, and the environment light parameters comprise peripheral illumination light and light colors thereof.
3. The vehicle light enhancement identification system according to claim 1, wherein the spectral database module stores spectral data including road spectral reflectance curve data, illuminated object spectral reflectance curve data, and snow spectral reflectance curve data; the road spectral reflection curve data comprises various types of road spectral reflection curve data and road marker spectral reflection curve data.
4. The enhanced identification system for vehicular lamp according to claim 1, wherein the spectral database module stores spectral data further comprising penetration data corresponding to each characteristic spectrum in rainy, foggy and snowy weather.
5. The automotive light enhanced identification system according to claim 1, wherein the characteristic spectrum is a monochromatic light spectrum having a half-wave width of 50nm or less.
6. The vehicular lamp identification enhancement system according to claim 1, wherein the contrast comprises a luminance contrast, a chrominance contrast, and a sub-band spectral contrast, the sub-band spectral contrast comprising a characteristic spectral contrast;
the characteristic spectrum contrast refers to the contrast presented by the characteristic spectrum corresponding to the spectrum region.
7. The vehicular lamp enhancement identification system according to claim 6, wherein the sub-band spectral contrast comprises a spectral contrast for each wavelength band of 380-780 nm.
8. The vehicular lamp enhancement identification system according to claim 6, wherein the characteristic spectral contrast comprises a spectral band region contrast resulting from synthesis of a plurality of characteristic spectra.
9. The vehicle lamp enhanced identification system according to any one of claims 1 to 8, wherein the main control module is connected with a speed sensor and a positioning module, the speed sensor is used for acquiring a movement vector of a vehicle relative to an object to be illuminated, the positioning module establishes a dynamic coordinate system moving along with the vehicle to perform coordinate positioning on a road and the object to be illuminated, the main control module performs motion analysis according to the reaction time, the speed vector and the movement vector to perform motion compensation on the coordinate positioning of the object to be illuminated according to an analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multi-feature spectra of the road and the object to be illuminated is formed within an illumination area of the vehicle lamp.
10. An enhanced identification method for a vehicle lamp is characterized by comprising the following steps:
s100, collecting environmental scenes of roads around the vehicle and an object to be illuminated, judging a weather type, and identifying each characteristic spectrum transmittance corresponding to the weather type;
s200, determining spectral reflection characteristics of a road and an illuminated object;
s300, according to the spectral reflection characteristics of the road and the illuminated object, the contrast difference of the road and the illuminated object under the combined action of the ambient light and different characteristic spectra is analyzed, and the recognition degree of the corresponding road and the illuminated object is obtained;
s400, selecting characteristic spectrums corresponding to the road and the object to be illuminated respectively when the recognition degree is the maximum, and forming a composite light illumination scheme of the multiple characteristic spectrums of the road and the object to be illuminated in the range of the vehicle lamp illumination area;
s500, composite light illumination formed by multi-feature spectrums is adopted.
11. The vehicular lamp enhancement identification method according to claim 10, wherein in the step S300, the contrast includes a luminance contrast, a chrominance contrast, and a sub-band spectral contrast, the sub-band spectral contrast including a characteristic spectral contrast;
in step S300, the characteristic spectrum contrast refers to a contrast presented by the characteristic spectrum corresponding to the spectral band region.
12. The vehicular lamp enhancement identifying method according to claim 11, wherein in the step S300, the sub-band spectral contrast comprises a spectral contrast of each wavelength band of 380-780 nm.
13. The method for identifying a vehicular lamp enhancement as claimed in claim 11, wherein in step S300, the characteristic spectral contrast includes a spectral band region contrast formed by synthesizing a plurality of characteristic spectra.
14. The vehicle lamp identification method according to any one of claims 10 to 13, wherein in step S100, a vehicle speed vector and a movement vector relative to the object are collected, a dynamic coordinate system moving with the vehicle is established, and a road and the object are subjected to coordinate positioning; in the step S400, motion analysis is performed according to the reaction time, the velocity vector, and the motion vector, and motion compensation is performed on the coordinate location of the illuminated object according to the analysis result, and on the basis of the motion compensation, a composite light illumination scheme of multiple characteristic spectra of the road and the illuminated object is formed within the range of the vehicle lamp illumination area.
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