CN116156127A - Image matching system and method - Google Patents

Image matching system and method Download PDF

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Publication number
CN116156127A
CN116156127A CN202211258659.8A CN202211258659A CN116156127A CN 116156127 A CN116156127 A CN 116156127A CN 202211258659 A CN202211258659 A CN 202211258659A CN 116156127 A CN116156127 A CN 116156127A
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projection
area
image analysis
white area
mobile projector
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易正芳
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Nanjing Yangye Digital Technology Co.,Ltd.
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Individual
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Priority to CN202211258659.8A priority Critical patent/CN116156127A/en
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Priority to GBGB2401094.4A priority patent/GB202401094D0/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3191—Testing thereof
    • 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
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The invention relates to an image matching system, comprising: the image analysis mechanism is arranged at the top end of the projection wall body of the mobile projector and is used for analyzing whether a human body target with a depth of view smaller than a preset depth of field limit exists in an imaging picture of the environment where the mobile projector is positioned; the mobile projector is used for executing projection operation on the opposite projection wall body, and the area of the projected area on the projection wall body is equal to the current detection area when the projection operation is executed; and the area measuring device is used for determining the solid area of the white area. The invention also relates to a projection wall surface image matching method. The invention can complete the adjustment of the projection range of the projection mechanism by adopting an electronic regulation and control mechanism based on white wall surface detection and wall surface area analysis, and adopts various control modes such as manual integral fine adjustment, projection prohibition based on human body detection and the like, thereby realizing the self-adaptive calibration of the projection area of the projection device.

Description

Image matching system and method
Technical Field
The present invention relates to the field of image processing, and in particular, to an image matching system and method.
Background
The image processing system is used for converting the shot target into an image signal through a machine vision product (namely an image shooting device, namely CMOS and CCD), transmitting the image signal to a special analysis system and converting the image signal into a digital signal according to the information of pixel distribution, brightness, color and the like; the analysis system performs various operations on these signals to extract characteristics of the target, and further controls the operation of the on-site equipment based on the result of the discrimination.
Currently, most of the image capturing devices on the market are based on CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor) chip cameras. Among them, CCD is the most commonly used image sensor for machine vision at present. It integrates photoelectric conversion, charge storage, charge transfer and signal reading into one body, and is a typical solid imaging device. The outstanding feature of CCDs is that the charge is signaled, whereas the other devices are signaled by current or voltage. Such an imaging device forms charge packets by photoelectric conversion, and then transfers and amplifies an output image signal under the action of a driving pulse.
CMOS image sensors were developed early in the beginning of the 70 s of the 20 th century and early in the 90 s, and they have been rapidly developed with the development of very large scale integrated circuit (VLSI) manufacturing process technologies. The CMOS image sensor integrates the photosensitive element array, the image signal amplifier, the signal reading circuit, the analog-to-digital conversion circuit, the image signal processor and the controller on a chip, and has the advantage of programming random access of local pixels. At present, CMOS image sensors are widely used in high resolution and high speed applications due to their good integration, low power consumption, high speed transmission, and wide dynamic range.
However, the application of the current image processing mechanism on the projector is still immature, and some manual operation links cannot be effectively replaced, so that the operation of the projector is still relatively complicated, and the use requirement of a user cannot be met. For example, when a wall surface of a house in a home environment is projected, because a movable projector easily generates a projection area deviation, how to exactly match the projection range of the projector on the wall surface with a white area to be projected of the wall surface of the house is a task which can be completed only by manually executing multiple calibrations.
In the technical scheme, the invention with the application publication number of CN113238440A discloses an operation guiding method, a system and a computer readable storage medium based on wide screen splicing, wherein the method comprises the steps that after a wide screen projection system is started and two optical machines are used for projection focusing, if a user is detected to trigger projection calibration through a setting interface or through voice information, the two optical machines are controlled to project a projection surface in the shooting direction of a camera, and spliced calibration images are respectively projected; based on the collected images of the spliced calibration images shot by the cameras, determining the position relationship of the two spliced calibration images; generating and outputting operation guide of the optical machine according to the position relation; after the two spliced calibration images are spliced seamlessly, the two optical machines perform trapezoidal correction and projection size correction; and finally, controlling the two light machines to respectively project the images to be displayed to the projection surface. The invention solves the problems that the upper and lower black edges of the projection of a wide screen projection system are large and the projection area of an actual display image is small, and aims at the effective projection picture integrity of the wide screen projection system.
The invention discloses an automatic projector calibration system and method based on image recognition for an intelligent classroom, wherein the system comprises a projection calibration terminal and a projection device; the projection device includes a projector and a boom. The invention discloses that the horizontal rotation direction and rotation angle of a servo motor 23 are obtained through an image analysis module according to a horizontal distance D, a maximum transverse difference delta D, a curtain image width D1, a projection image width D2 and an amplification ratio S; the image analysis module obtains the length of the extension or shortening of the electric telescopic rod 22 according to the horizontal distance d, the height H1 of the cloth curtain image, the height H2 of the projection image, the maximum vertical difference deltah and the amplification proportion S, the servo motor 23 rotates the direction of the projector according to the horizontal rotation direction and the rotation angle, and the electric telescopic rod 22 adjusts the height of the projector according to the height adjustment information, so that the offset calibration of the projection image is realized.
The invention disclosed in application publication number CN110764642a is a method and apparatus for visual projection calibration, the method comprising: s1, acquiring image information; s2: identifying a touch area, a display area, a first reference point corresponding to the touch area and a second reference point corresponding to the display area according to the image information; s3: virtually forming a plurality of target points on the identified display area, and respectively calculating the input coordinates of each target point compared with the first reference point and the output coordinates of each target point compared with the second reference point; s4: respectively importing input coordinates and output coordinates corresponding to each target point into a preset training model to obtain calibration parameters corresponding to the current touch area and the display area; s5: and calibrating coordinate points on the touch area and the display area according to the calibration parameters. The invention discloses a method for automatically calibrating coordinate points of a touch area and a display area without manual clicking.
It can be seen that none of the above disclosures of the invention suggests how to exactly match the projection range of the projector on the wall surface with the white area to be projected of the wall surface of the house.
Disclosure of Invention
In order to solve the technical problems in the related art, the invention provides an image matching system and method, which can effectively expand the subdivision field of the existing image processing mechanism, complete the adjustment of the projection range of a projection mechanism by adopting an electronic regulation and control mechanism based on white wall surface detection and wall surface area analysis, and simultaneously adopt various control modes such as manual integral fine adjustment, projection inhibition based on human body detection and the like, thereby simplifying the operation process of the projection mechanism and improving the controllability of the projection mechanism.
According to an aspect of the present invention, there is provided an image matching system, the system comprising:
the image analysis mechanism is arranged at the top end of a projection wall body of the mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
the linkage control mechanism respectively establishes a Bluetooth communication link with the image analysis mechanism and the mobile projector so as to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector;
the mobile projector is used for executing projection operation on a projection wall body opposite to the mobile projector when receiving a first state switching instruction, and the area of a projected area on the projection wall body is equal to the current detection area when executing the projection operation;
the manual adjusting mechanism is connected with the mobile projector through a remote control communication link and is used for adjusting the projection position of the mobile projector on the projection wall body under manual operation so as to reach the condition that a projected area on the projection wall body covers a white area of the projection wall body;
the orientation detection device is used for analyzing the total number of pixel points occupied by a white area in an imaging picture of an environment where the projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measurement device is connected with the orientation detection device and is used for determining the entity area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is positioned and the total number of pixel points occupied by the white area;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
According to another aspect of the present invention, there is also provided a projected wall image matching method, the method including:
the method comprises the steps that an image analysis mechanism is arranged at the top end of a projection wall body of a mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
using a linkage control mechanism to respectively establish Bluetooth communication links with the image analysis mechanism and the mobile projector so as to realize linkage control of image analysis action of the image analysis mechanism and image projection action of the mobile projector;
the method comprises the steps that a mobile projector is used for executing projection operation on a projection wall body opposite to a first state switching instruction when the first state switching instruction is received, and the area of a projected area on the projection wall body is equal to the current detection area when the projection operation is executed;
the system comprises a projection wall, a movable projector, a manual adjusting mechanism, a remote control communication link and a control unit, wherein the manual adjusting mechanism is connected with the movable projector through the remote control communication link and is used for adjusting the projection position of the movable projector on the projection wall under manual operation so as to enable a projected area on the projection wall to cover a white area of the projection wall;
using an orientation detection device to analyze the total number of pixel points occupied by a white area in an imaging picture of an environment where a projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measuring device is connected with the orientation detecting device and is used for determining the entity area of the white area based on the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
Drawings
Embodiments of the present invention will be described below with reference to the accompanying drawings, in which:
fig. 1 is a block diagram showing the structure of an image matching system according to embodiment 1 of the present invention.
Fig. 2 is a flowchart showing steps of a method for matching a projected wall surface image according to embodiment 3 of the present invention.
Detailed Description
An embodiment of the projected wall image matching method of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
Fig. 1 is a block diagram showing the structure of an image matching system according to embodiment 1 of the present invention, the system including:
the image analysis mechanism is arranged at the top end of a projection wall body of the mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
the linkage control mechanism respectively establishes a Bluetooth communication link with the image analysis mechanism and the mobile projector so as to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector;
the mobile projector is used for executing projection operation on a projection wall body opposite to the mobile projector when receiving a first state switching instruction, and the area of a projected area on the projection wall body is equal to the current detection area when executing the projection operation;
the invention is an invention point of the technical scheme of the invention, namely, whether an effective human body target exists in the environment where the mobile projector is positioned or not is detected before projection, so as to judge whether the projection action needs to be executed or not based on a detection result, thereby realizing reduction of projection power consumption;
continuing with the description of the structure of the system:
the manual adjusting mechanism is connected with the mobile projector through a remote control communication link and is used for adjusting the projection position of the mobile projector on the projection wall body under manual operation so as to reach the condition that a projected area on the projection wall body covers a white area of the projection wall body;
the orientation detection device is used for analyzing the total number of pixel points occupied by a white area in an imaging picture of an environment where the projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measurement device is connected with the orientation detection device and is used for determining the entity area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is positioned and the total number of pixel points occupied by the white area;
for example, a two-input-one-output numerical function may be used to express the overall depth of field of the white region in the imaging frame of the environment where the projected wall is located and the numerical correspondence between the total number of pixel points occupied by the white region and the determined physical area of the white region;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
The method is characterized in that a targeted image processing mechanism is introduced to perform area analysis on a wall white area in front of the mobile projector, an electronic adjusting mechanism is adopted to enable the real-time projection area of the mobile projector on the wall in front to be equal to the analyzed area data, and on the basis, the whole migration of the projection view is performed by adopting a manual mode, so that the projection area of the mobile projector is just covered on the wall white area in front of the mobile projector by adopting an automatic-manual mode.
Example 2
The image matching system includes:
the image analysis mechanism is arranged at the top end of a projection wall body of the mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
the linkage control mechanism respectively establishes a Bluetooth communication link with the image analysis mechanism and the mobile projector so as to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector;
the mobile projector is used for executing projection operation on a projection wall body opposite to the mobile projector when receiving a first state switching instruction, and the area of a projected area on the projection wall body is equal to the current detection area when executing the projection operation;
the manual adjusting mechanism is connected with the mobile projector through a remote control communication link and is used for adjusting the projection position of the mobile projector on the projection wall body under manual operation so as to reach the condition that a projected area on the projection wall body covers a white area of the projection wall body;
the orientation detection device is used for analyzing the total number of pixel points occupied by a white area in an imaging picture of an environment where the projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measurement device is connected with the orientation detection device and is used for determining the entity area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is positioned and the total number of pixel points occupied by the white area;
the first capturing device is arranged at the top end of the projection wall of the mobile projector and connected with the image analysis mechanism and is used for capturing an imaging picture of the environment where the mobile projector is located;
the second capturing device is arranged side by side with the movable projector and connected with the orientation detection device and is used for capturing an imaging picture of the environment where the projection wall body is located;
wherein the first capture device and the second capture device are the same type and structure, each of the first capture device and the second capture device comprising an image sensor, an optical filter, and an optical assembly;
the first capturing device is further used for sending the captured imaging picture of the environment where the mobile projector is located to the image analysis mechanism;
the second capturing device is further used for sending the captured imaging picture of the environment where the projection wall body is located to the orientation detecting device.
In the image matching system:
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises the following steps: taking a pixel point with a gray value larger than or equal to a set gray limit in an imaging picture of an environment where the projection wall is positioned as a single pixel point forming the white area;
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises: when the overall depth of field of a white area in an imaging picture of an environment where the projection wall body is positioned is unchanged, the determined solid area of the white area is in direct proportion to the total number of pixel points occupied by the white area;
wherein, determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall is located and the total number of pixel points occupied by the white area further comprises: when the total number of pixel points occupied by the white area is unchanged, the determined solid area of the white area is in direct proportion to the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located.
In the image matching system:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, wherein the linkage control comprises the following steps: when the image analysis mechanism analyzes a human body target with a scene depth smaller than a preset depth of field limit, the image analysis mechanism executes an image analysis action after the image projection action of a set frame number is executed by the mobile projector.
In the image matching system:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, and further comprising: when the image analysis mechanism analyzes that no human body target with the depth of view being less than the preset depth of view limit exists, the mobile projector does not execute image projection action;
when the image analysis mechanism analyzes a human body target with a scene depth less than a preset depth of field limit, after the mobile projector performs an image projection action of a set frame number, the image analysis mechanism performs an image analysis action once, which comprises: the value of the preset frame number is in direct proportion to the operation amount of analyzing whether a human body target with the depth of view being smaller than the preset depth of field limit exists in an imaging picture of the environment where the mobile projector is located.
Example 3
Fig. 2 is a flowchart of steps of a method for matching a projected wall image according to embodiment 3 of the present invention, where the method includes:
the method comprises the steps that an image analysis mechanism is arranged at the top end of a projection wall body of a mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
using a linkage control mechanism to respectively establish Bluetooth communication links with the image analysis mechanism and the mobile projector so as to realize linkage control of image analysis action of the image analysis mechanism and image projection action of the mobile projector;
the method comprises the steps that a mobile projector is used for executing projection operation on a projection wall body opposite to a first state switching instruction when the first state switching instruction is received, and the area of a projected area on the projection wall body is equal to the current detection area when the projection operation is executed;
the system comprises a projection wall, a movable projector, a manual adjusting mechanism, a remote control communication link and a control unit, wherein the manual adjusting mechanism is connected with the movable projector through the remote control communication link and is used for adjusting the projection position of the movable projector on the projection wall under manual operation so as to enable a projected area on the projection wall to cover a white area of the projection wall;
using an orientation detection device to analyze the total number of pixel points occupied by a white area in an imaging picture of an environment where a projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measuring device is connected with the orientation detecting device and is used for determining the entity area of the white area based on the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area;
for example, a two-input-one-output numerical function may be used to express the overall depth of field of the white region in the imaging frame of the environment where the projected wall is located and the numerical correspondence between the total number of pixel points occupied by the white region and the determined physical area of the white region;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
Example 4
The projection wall surface image matching method comprises the following steps:
the method comprises the steps that an image analysis mechanism is arranged at the top end of a projection wall body of a mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
using a linkage control mechanism to respectively establish Bluetooth communication links with the image analysis mechanism and the mobile projector so as to realize linkage control of image analysis action of the image analysis mechanism and image projection action of the mobile projector;
the method comprises the steps that a mobile projector is used for executing projection operation on a projection wall body opposite to a first state switching instruction when the first state switching instruction is received, and the area of a projected area on the projection wall body is equal to the current detection area when the projection operation is executed;
the system comprises a projection wall, a movable projector, a manual adjusting mechanism, a remote control communication link and a control unit, wherein the manual adjusting mechanism is connected with the movable projector through the remote control communication link and is used for adjusting the projection position of the movable projector on the projection wall under manual operation so as to enable a projected area on the projection wall to cover a white area of the projection wall;
using an orientation detection device to analyze the total number of pixel points occupied by a white area in an imaging picture of an environment where a projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measuring device is connected with the orientation detecting device and is used for determining the entity area of the white area based on the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area;
the first capturing device is arranged at the top end of the projection wall of the mobile projector and connected with the image analysis mechanism and is used for capturing an imaging picture of the environment where the mobile projector is located;
the second capturing device is arranged side by side with the movable projector and connected with the orientation detection device and is used for capturing an imaging picture of the environment where the projection wall body is located;
wherein the first capture device and the second capture device are the same type and structure, each of the first capture device and the second capture device comprising an image sensor, an optical filter, and an optical assembly;
the first capturing device is further used for sending the captured imaging picture of the environment where the mobile projector is located to the image analysis mechanism;
the second capturing device is further used for sending the captured imaging picture of the environment where the projection wall body is located to the orientation detecting device.
The projection wall surface image matching method comprises the following steps:
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises the following steps: taking a pixel point with a gray value larger than or equal to a set gray limit in an imaging picture of an environment where the projection wall is positioned as a single pixel point forming the white area;
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises: when the overall depth of field of a white area in an imaging picture of an environment where the projection wall body is positioned is unchanged, the determined solid area of the white area is in direct proportion to the total number of pixel points occupied by the white area;
wherein, determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall is located and the total number of pixel points occupied by the white area further comprises: when the total number of pixel points occupied by the white area is unchanged, the determined solid area of the white area is in direct proportion to the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located.
The projection wall surface image matching method comprises the following steps:
the method for realizing the linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector by establishing Bluetooth communication links with the image analysis mechanism and the mobile projector respectively comprises the following steps: when the image analysis mechanism analyzes a human body target with a scene depth smaller than a preset depth of field limit, the image analysis mechanism executes an image analysis action after the image projection action of a set frame number is executed by the mobile projector.
The projection wall surface image matching method comprises the following steps:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, and further comprising: when the image analysis mechanism analyzes that no human body target with the depth of view being less than the preset depth of view limit exists, the mobile projector does not execute image projection action;
when the image analysis mechanism analyzes a human body target with a scene depth less than a preset depth of field limit, after the mobile projector performs an image projection action of a set frame number, the image analysis mechanism performs an image analysis action once, which comprises: the value of the preset frame number is in direct proportion to the operation amount of analyzing whether a human body target with the depth of view being smaller than the preset depth of field limit exists in an imaging picture of the environment where the mobile projector is located.
In addition, in the image matching system and the method, determining the solid area of the white area based on the overall depth of field of the white area and the total number of pixels occupied by the white area in the imaging frame of the environment where the projection wall is located further comprises: and taking the pixel points with gray values smaller than the set gray limit in the imaging picture of the environment where the projection wall is located as single pixel points forming an image area outside the white area in the imaging picture of the environment where the projection wall is located. The image matching system and the method of the invention aim at the technical problem of difficult calibration of the deviation of the projection area of the mobile projection instrument in the prior art, can complete the adjustment of the projection range of the projection mechanism by adopting an electronic regulation and control mechanism based on white wall surface detection and wall surface area analysis, and simultaneously adopts various control modes such as manual integral fine adjustment, projection prohibition based on human body detection and the like, thereby realizing the self-adaptive calibration of the projection area of the projection device.
Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the claims and their equivalents.

Claims (10)

1. An image matching system, the system comprising:
the image analysis mechanism is arranged at the top end of a projection wall body of the mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
the linkage control mechanism respectively establishes a Bluetooth communication link with the image analysis mechanism and the mobile projector so as to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector;
the mobile projector is used for executing projection operation on a projection wall body opposite to the mobile projector when receiving a first state switching instruction, and the area of a projected area on the projection wall body is equal to the current detection area when executing the projection operation;
the manual adjusting mechanism is connected with the mobile projector through a remote control communication link and is used for adjusting the projection position of the mobile projector on the projection wall body under manual operation so as to reach the condition that a projected area on the projection wall body covers a white area of the projection wall body;
the orientation detection device is used for analyzing the total number of pixel points occupied by a white area in an imaging picture of an environment where the projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measurement device is connected with the orientation detection device and is used for determining the entity area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is positioned and the total number of pixel points occupied by the white area;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
2. The image matching system of claim 1, wherein the system further comprises:
the first capturing device is arranged at the top end of the projection wall of the mobile projector and connected with the image analysis mechanism and is used for capturing an imaging picture of the environment where the mobile projector is located;
the second capturing device is arranged side by side with the movable projector and connected with the orientation detection device and is used for capturing an imaging picture of the environment where the projection wall body is located;
the first capturing device is further used for sending the captured imaging picture of the environment where the mobile projector is located to the image analysis mechanism;
the second capturing device is further used for sending the captured imaging picture of the environment where the projection wall body is located to the orientation detecting device.
3. The image matching system of any of claims 1-2, wherein:
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises the following steps: taking a pixel point with a gray value larger than or equal to a set gray limit in an imaging picture of an environment where the projection wall is positioned as a single pixel point forming the white area;
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises: when the overall depth of field of a white area in an imaging picture of an environment where the projection wall body is positioned is unchanged, the determined solid area of the white area is in direct proportion to the total number of pixel points occupied by the white area;
wherein, determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall is located and the total number of pixel points occupied by the white area further comprises: when the total number of pixel points occupied by the white area is unchanged, the determined solid area of the white area is in direct proportion to the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located.
4. The image matching system of any of claims 1-2, wherein:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, wherein the linkage control comprises the following steps: when the image analysis mechanism analyzes a human body target with a scene depth smaller than a preset depth of field limit, the image analysis mechanism executes an image analysis action after the image projection action of a set frame number is executed by the mobile projector.
5. The image matching system of claim 4, wherein:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, and further comprising: when the image analysis mechanism analyzes that no human body target with the depth of view being less than the preset depth of view limit exists, the mobile projector does not execute image projection action;
when the image analysis mechanism analyzes a human body target with a scene depth less than a preset depth of field limit, after the mobile projector performs an image projection action of a set frame number, the image analysis mechanism performs an image analysis action once, which comprises: the value of the preset frame number is in direct proportion to the operation amount of analyzing whether a human body target with the depth of view being smaller than the preset depth of field limit exists in an imaging picture of the environment where the mobile projector is located.
6. A method for matching projected wall images, the method comprising:
the method comprises the steps that an image analysis mechanism is arranged at the top end of a projection wall body of a mobile projector and is used for analyzing whether a human body target with a scene depth being smaller than a preset depth of field limit exists in an imaging picture of an environment where the mobile projector is located, sending a first state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed, and sending a second state switching instruction when the human body target with the scene depth being smaller than the preset depth of field limit is analyzed;
using a linkage control mechanism to respectively establish Bluetooth communication links with the image analysis mechanism and the mobile projector so as to realize linkage control of image analysis action of the image analysis mechanism and image projection action of the mobile projector;
the method comprises the steps that a mobile projector is used for executing projection operation on a projection wall body opposite to a first state switching instruction when the first state switching instruction is received, and the area of a projected area on the projection wall body is equal to the current detection area when the projection operation is executed;
the system comprises a projection wall, a movable projector, a manual adjusting mechanism, a remote control communication link and a control unit, wherein the manual adjusting mechanism is connected with the movable projector through the remote control communication link and is used for adjusting the projection position of the movable projector on the projection wall under manual operation so as to enable a projected area on the projection wall to cover a white area of the projection wall;
using an orientation detection device to analyze the total number of pixel points occupied by a white area in an imaging picture of an environment where a projection wall is located when a first state switching instruction is received and before the mobile projector performs projection operation on the projection wall opposite to the first state switching instruction;
the area measuring device is connected with the orientation detecting device and is used for determining the entity area of the white area based on the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area;
when receiving a first state switching instruction, executing a projection operation on a projection wall opposite to the first state switching instruction, wherein when executing the projection operation, the area of a projected area on the projection wall is equal to the current detection area, the method comprises the following steps: the current detection area is equal to the solid area of the projected area on the projected wall, which covers the white area of the projected wall.
7. The method of matching projected wall images of claim 6, further comprising:
the first capturing device is arranged at the top end of the projection wall of the mobile projector and connected with the image analysis mechanism and is used for capturing an imaging picture of the environment where the mobile projector is located;
the second capturing device is arranged side by side with the movable projector and connected with the orientation detection device and is used for capturing an imaging picture of the environment where the projection wall body is located;
the first capturing device is further used for sending the captured imaging picture of the environment where the mobile projector is located to the image analysis mechanism;
the second capturing device is further used for sending the captured imaging picture of the environment where the projection wall body is located to the orientation detecting device.
8. The projected wall image matching method of any one of claims 6-7, wherein:
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises the following steps: taking a pixel point with a gray value larger than or equal to a set gray limit in an imaging picture of an environment where the projection wall is positioned as a single pixel point forming the white area;
the determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall body is located and the total number of pixel points occupied by the white area comprises: when the overall depth of field of a white area in an imaging picture of an environment where the projection wall body is positioned is unchanged, the determined solid area of the white area is in direct proportion to the total number of pixel points occupied by the white area;
wherein, determining the solid area of the white area based on the whole depth of field of the white area in the imaging picture of the environment where the projection wall is located and the total number of pixel points occupied by the white area further comprises: when the total number of pixel points occupied by the white area is unchanged, the determined solid area of the white area is in direct proportion to the whole depth of field of the white area in an imaging picture of the environment where the projection wall body is located.
9. The projected wall image matching method of any one of claims 6-7, wherein:
the method for realizing the linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector by establishing Bluetooth communication links with the image analysis mechanism and the mobile projector respectively comprises the following steps: when the image analysis mechanism analyzes a human body target with a scene depth smaller than a preset depth of field limit, the image analysis mechanism executes an image analysis action after the image projection action of a set frame number is executed by the mobile projector.
10. The projected wall image matching method of claim 9, wherein:
establishing a bluetooth communication link with the image analysis mechanism and the mobile projector respectively to realize linkage control of the image analysis action of the image analysis mechanism and the image projection action of the mobile projector, and further comprising: when the image analysis mechanism analyzes that no human body target with the depth of view being less than the preset depth of view limit exists, the mobile projector does not execute image projection action;
when the image analysis mechanism analyzes a human body target with a scene depth less than a preset depth of field limit, after the mobile projector performs an image projection action of a set frame number, the image analysis mechanism performs an image analysis action once, which comprises: the value of the preset frame number is in direct proportion to the operation amount of analyzing whether a human body target with the depth of view being smaller than the preset depth of field limit exists in an imaging picture of the environment where the mobile projector is located.
CN202211258659.8A 2022-10-14 2022-10-14 Image matching system and method Pending CN116156127A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117455867A (en) * 2023-10-30 2024-01-26 无锡市凯丰新材料有限公司 Magnetic core performance optimization management system based on neural network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117455867A (en) * 2023-10-30 2024-01-26 无锡市凯丰新材料有限公司 Magnetic core performance optimization management system based on neural network

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