CN114245042A - Light supplementing method, imaging device, electronic equipment and readable storage medium - Google Patents
Light supplementing method, imaging device, electronic equipment and readable storage medium Download PDFInfo
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- 238000003384 imaging method Methods 0.000 title claims abstract description 26
- 239000013589 supplement Substances 0.000 claims abstract description 255
- 230000010354 integration Effects 0.000 claims abstract description 32
- 230000000750 progressive effect Effects 0.000 claims abstract description 20
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/50—Control of the SSIS exposure
- H04N25/57—Control of the dynamic range
- H04N25/58—Control of the dynamic range involving two or more exposures
- H04N25/581—Control of the dynamic range involving two or more exposures acquired simultaneously
- H04N25/583—Control of the dynamic range involving two or more exposures acquired simultaneously with different integration times
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention provides a light supplementing method, an imaging device, an electronic device and a readable storage medium, wherein the method comprises the following steps: when receiving a snapshot trigger signal, determining an exposure mode of the image sensor; if the exposure mode is a progressive exposure mode, determining a target integration time zone according to the integration time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in a target image; the target integration time zone represents that all rows of the target image are in an exposure state; determining initial light supplement time in the target integral time zone, and controlling a light supplement lamp to be turned on at the initial light supplement time; when the starting time of the light supplement lamp reaches the target light supplement time, controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp; the method and the device can accurately control the light supplementing position, greatly reduce the luminous power of the light supplementing lamp and reduce light pollution and the influence on pedestrians.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring, in particular to a light supplementing method, an imaging device, electronic equipment and a readable storage medium.
Background
Traffic monitored control system becomes urban traffic management's primary means gradually, to miniature bayonet socket equipment, in order to reach the clear control in all-weather realization road surface, the light filling lamp that often brightens has become monitored control system subassembly essential at night, the light filling principle of the light filling lamp that often brightens all is in the open mode in the whole frame duration of a frame of image, power is big, luminance is high, cause not little light pollution on easily giving the road surface control, and the human eye can appear temporarily behind the highlight and see the unclear things condition, transient field of vision blind area appears, to the vehicle through the monitored control system highway section, bury down the potential safety hazard.
Disclosure of Invention
An object of the present invention includes, for example, providing a fill-in light method, an imaging device, an electronic device and a readable storage medium, which can solve the above technical problems.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a light supplement method, including: when a snapshot trigger signal is generated, determining an exposure mode of the image sensor; if the exposure mode is a progressive exposure mode, determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in the target image; the target integration time zone represents that all rows of the target image are in an exposure state; determining an initial light supplement time in the target integral time zone, and controlling a light supplement lamp to be turned on at the initial light supplement time; when the starting time of the light supplement lamp reaches the target light supplement time, controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp; and the target fill lighting duration is less than the frame duration of the target image.
In a second aspect, the present invention provides an imaging device, including a main control unit, a synchronous control unit, a light supplement lamp driving unit, and a light supplement lamp; the main control unit is electrically connected with the synchronous control unit; the light supplement lamp driving unit is respectively electrically connected with the synchronous control unit and the light supplement lamp; the main control unit is used for determining the exposure mode of the image sensor when receiving a snapshot trigger signal; if the exposure mode is a line-by-line exposure mode, sending the snapshot trigger signal and the line-by-line exposure mode to the synchronous control unit; the synchronous control unit is used for determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in the target image; the target integration time zone represents that all rows of the target image are in an exposure state; determining an initial light supplement time in the target integral time zone, and controlling the light supplement lamp driving unit to drive the light supplement lamp to be turned on at the initial light supplement time; the main control unit is further configured to control the light supplement lamp to be turned off or reduce the light emitting intensity of the light supplement lamp when the turn-on duration of the light supplement lamp reaches a target light supplement duration; and the target fill lighting duration is less than the frame duration of the target image.
In a third aspect, the present invention provides an electronic device, including a processor and a memory, where the memory stores a computer program capable of being executed by the processor, and the processor can execute the computer program to implement the light supplement method of the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the fill light method of the first aspect.
The embodiment of the invention provides a light supplementing method, an imaging device, an electronic device and a readable storage medium, wherein the method comprises the following steps: when a snapshot trigger signal is generated, determining an exposure mode of the image sensor; if the exposure mode is a progressive exposure mode, determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in the target image; the target integration time zone represents that all rows of the target image are in an exposure state; determining an initial light supplement time in the target integral time zone, and controlling a light supplement lamp to be turned on at the initial light supplement time; when the starting time of the light supplement lamp reaches the target light supplement time, controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp; and the target fill lighting duration is less than the frame duration of the target image. Therefore, the light supplement method provided by the invention does not need to supplement light in the whole frame time of the target image, and can turn off the light supplement lamp or reduce the luminous intensity of the light supplement lamp after the target light supplement time is reached, so that the luminous power of the light supplement lamp can be greatly reduced, and the light pollution and the influence on pedestrians are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of the operation principle of an electronic shutter based on a rolling shutter image sensor;
FIG. 2 is a functional block diagram of an imaging device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first light supplement design manner according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating that an oscilloscope simulates a current signal in a first fill-in light mode according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a first exposure result in a first fill-in light mode according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a second exposure result in the first fill-in light mode according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a second light supplement method according to an embodiment of the invention;
fig. 8 is a schematic diagram illustrating that an oscilloscope simulates a current signal in a second light supplement mode according to an embodiment of the present invention;
FIG. 9 is a diagram illustrating a first exposure result of a second light supplement method according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating a second exposure result of a second light supplement method according to an embodiment of the present invention;
fig. 11 is a schematic flowchart of a light supplement method according to an embodiment of the present invention;
fig. 12 is a schematic flowchart of step S302 provided in the embodiment of the present invention;
fig. 13 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The traffic monitoring system is gradually becoming the main means of urban traffic management, in order to achieve all-weather clear road monitoring, a Rolling Shutter image Sensor (Rolling Shutter Sensor) is gradually applied to a mini-bayonet camera, the exposure mechanism of the image Sensor is line-by-line exposure, a certain time difference exists between the line and the exposure starting point before the line, the time difference is a fixed value, and the exposure time of each line is the same.
As shown in fig. 1, fig. 1 is a schematic diagram of the operating principle of an electronic shutter based on a rolling shutter image sensor, wherein in a plurality of lines from Lin1 to line last, a black rectangular position represents an exposure start time point of each line, and a gray rectangular position represents an exposure end time point of each line, which is also a position for sensing data reading. The area between the black and gray rectangles is the integration time, i.e. the image sensor duration exposure time period.
With continued reference to fig. 1, from the time axis, for one frame of image, the total exposure time of the rolling shutter image sensor is row number x row period + row exposure time, for example: the line period of the rolling shutter image sensor is 10us, the total number of lines is 1080 lines, the set line exposure time is 10ms, and for one frame of image, the total exposure time is: 80 × 10us/1000+10ms equals 20.8ms, i.e. 20.8ms is needed to complete the exposure of all rows.
Therefore, the electronic shutter principle based on the rolling shutter image sensor determines that the rolling shutter image sensor cannot be supplemented with light by using the strobe light, if the strobe light is used for supplementing light, it is difficult to ensure that the light supplementing effect obtained by each line is the same, and then the phenomena of high brightness of partial lines and low brightness of partial lines can occur in the finally obtained image. Therefore, the rolling shutter image sensor generally adopts a normally-on lamp for light supplement.
However, the light supplement principle of the normally-on light supplement lamp is that the lamp is turned on in the whole frame duration of one frame of image, the power is large, the brightness is high, the road surface is easily monitored, the human eyes can temporarily see objects clearly after encountering strong light, a short visual field blind area is generated, and potential safety hazards are buried for vehicles passing through a monitoring system road section.
In order to solve the above technical problems, embodiments of the present invention provide a light supplement method, which can solve the limitation that a micro bayonet camera using a Rolling Shutter sensor can only match a normally-on light for light supplement, accurately control the light supplement position, reduce the overall light supplement power, and reduce light pollution.
In order to implement the light supplement method, the embodiment of the present invention first provides an imaging device 200, where the imaging device 200 may be applied to a mini-bayonet camera to implement a road surface monitoring function, and in order to solve the above-mentioned defects of a normally-on light supplement lamp, the imaging device 200 provided in the embodiment of the present invention has a strong light supplement requirement only at the snapshot moment, and does not need strong light supplement at other normal times.
It should be noted that the imaging apparatus 200 provided in the embodiment of the present invention may be, but is not limited to, a mini-mount camera and other cameras with monitoring capability.
Referring to fig. 2, fig. 2 is a functional block diagram of an imaging apparatus according to an embodiment of the present invention, the imaging apparatus 200 includes: the system comprises a main control unit 201, a synchronous control unit 202, a light supplement lamp driving unit 203, a light supplement lamp 204 and an image sensor 205; the main control unit 201 and the image sensor 205 are electrically connected with the synchronization control unit 202 respectively; the fill light driving unit 203 is electrically connected to the synchronization control unit 202 and the fill light 204, respectively.
A main control unit 201, configured to determine an exposure mode of the image sensor 205 when the snapshot trigger signal is generated; if the exposure mode is the progressive exposure mode, the snapshot trigger signal and the progressive exposure mode are sent to the synchronization control unit 202.
And the synchronous control unit 202 is configured to determine a target integration time zone according to the integration time after the image sensor starts to expose the target image, and determine an initial light supplement time in the target integration time zone.
The progressive exposure mode represents that the exposure starting points of two adjacent rows in the target image have a time difference of preset duration, the time difference is a row period, the target integration time zone represents the continuous exposure time period of the image sensor, and all rows of the target image are in an exposure state in the time period.
And the synchronous control unit 202 is configured to control the light supplement lamp driving unit to drive the light supplement lamp to turn on at the initial light supplement time.
The main control unit 201 is further configured to control the light supplement lamp to be turned off or reduce the light emitting intensity of the light supplement lamp when the turn-on duration of the light supplement lamp 204 reaches the target light supplement duration; and the target fill-in light duration is less than the frame duration of the target image.
The imaging device comprises a main control unit and a control unit, wherein the main control unit is used for determining the exposure mode of an image sensor when receiving a snapshot trigger signal; and if the exposure mode is a progressive exposure mode, sending the snapshot trigger signal and the progressive exposure mode to the synchronous control unit. A synchronous control unit for determining a target integration time zone according to an integration time after the image sensor starts to expose the target image; determining an initial light supplement time in the target integral time zone, and controlling a light supplement lamp driving unit to drive a light supplement lamp to be started at the initial light supplement time; the main control unit is further used for controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp when the turn-on duration of the light supplement lamp reaches the target light supplement duration; and the target fill-in light duration is less than the frame duration of the target image. It can be seen that the imaging device provided in the embodiment of the present invention does not need to perform light supplement for the entire frame duration of the target image, but can turn off the light supplement lamp or reduce the light emitting intensity of the light supplement lamp after the target light supplement duration is reached, so that the light emitting power of the light supplement lamp can be greatly reduced, and light pollution and influence on pedestrians can be reduced.
The above-described components of the imaging apparatus 200 of the present embodiment will be described below.
A main control unit 201, configured to determine an exposure mode of the image sensor 205 when the snapshot trigger signal is generated; if the exposure mode is the progressive exposure mode, the snapshot trigger signal and the progressive exposure mode are sent to the synchronization control unit 202.
For example, in a scene where a license plate of a violation vehicle needs to be snapshotted, when the vehicle passes through the snapshot range, the main control unit 201 generates a snapshot trigger signal to trigger the imaging device 200 to start the snapshot.
It is understood that if the image sensor 205 is a Rolling Shutter sensor or other image sensor with similar exposure mechanism, the corresponding exposure modes are all progressive exposure modes, and if the image sensor 205 is a Global Shutter sensor, the corresponding exposure mode is a Global exposure mode, which is not considered in the scope of the embodiments of the present invention.
For convenience of understanding a target integration time zone in the implementation of the present invention, firstly, an integration time zone in a line-by-line exposure mode needs to be understood, please refer to fig. 1, where the integration time zone refers to a region between a black rectangle and a gray rectangle, when a target exposure duration is set to be large enough, the integration time zone as shown in fig. 1 appears, in this integration time zone, it can be considered that all lines have already started to be exposed, so that light supplement can be performed for this time region, and a uniform light supplement effect can be achieved for all lines, and in a time outside this time region, the light supplement intensity of the light supplement lamp 204 can be adjusted according to an actual situation, for example, the light supplement lamp 204 can be turned off or the light intensity of the light supplement lamp can be reduced, thereby greatly reducing the light emitting power.
Therefore, on the basis of fig. 1, the target integration time zone provided by the embodiment of the present invention may be as shown in fig. 3, fig. 3 is a schematic diagram of a light supplement design manner provided by the embodiment of the present invention, a time region included in a dashed line frame shown in fig. 3 is the target integration time zone provided by the embodiment of the present invention, the length of the target integration time zone may be determined based on the actual exposure logic of the image sensor 205, and then the initial light supplement time is determined in the target integration time zone, so that an accurate light supplement effect may be achieved.
The synchronization control unit 202 is configured to determine a target integration time zone according to an integration time after the image sensor 205 starts to expose the target image, determine an initial light supplement time in the target integration time zone, and control the light supplement lamp driving unit to drive the light supplement lamp to turn on at the initial light supplement time.
It can be understood that, because the control logic inside the image sensor 205 is fixed, that is, the relationship between the exposure end point (ready timing) of each row and the row synchronization signal and the frame synchronization signal of the image sensor 205 is fixed, the fill-in start position can be precisely controlled through this timing relationship, so that all rows can be filled with fill-in light at the same time.
The main control unit 201 is further configured to control the light supplement lamp 204 to be turned off or reduce the light emitting intensity of the light supplement lamp when the turning-on duration of the light supplement lamp 204 reaches the target light supplement duration; and the target fill-in light duration is less than the frame duration of the target image.
It can be understood that, the duration of the target supplementary lighting in this embodiment is less than the frame duration of the target image, that is, the image frame rate, and an effect of reducing the light emitting power of the supplementary lighting lamp can be achieved, for example, if the frame duration of one frame of the target image is 40ms, the duration of the target supplementary lighting is 4ms, 6 supplementary lighting lamps exist, the power of each supplementary lighting lamp is 3W, then the supplementary lighting mode that the supplementary lighting lamp is normally on is implemented, the duration of the supplementary lighting is 40ms, and the consumed power of the supplementary lighting lamp is: 3, 6, 40ms/40 ms-18W; the light supplement mode provided by the embodiment of the invention consumes 6 × 4ms/40ms equal to 1.8W, and obviously, the light supplement mode provided by the embodiment of the invention consumes 80% of power in the future compared with the conventional normally bright light supplement mode.
For example, in a night snapshot scene, because the actually required exposure time is generally 2ms to 4ms during night snapshot, the light supplement time is also set to 2ms to 4ms, and thus, light supplement is not required to be performed within the whole frame time, and the power of the light supplement lamp can be greatly reduced.
In order to reduce the light-emitting power of the light supplement lamp, the embodiment of the invention can also control the light supplement lamp to be turned off or reduce the light-emitting brightness after the target light supplement duration is reached, so that the power of the light supplement lamp is greatly reduced.
Optionally, in order to determine an initial light supplement time in the target integration time zone and control the light supplement lamp to be turned on at the initial light supplement time, so as to implement uniform light supplement, a possible implementation manner is given below, that is:
the synchronization control unit 202 is specifically configured to: transmitting a frame synchronization signal, a line synchronization signal, and a target exposure time period to the image sensor 205; when receiving the exposure starting time of the first line of the target image responded by the image sensor 205, determining the exposure starting time of the last line of the target image according to the preset line period, the exposure starting time and the target exposure duration; the target exposure duration and the target light supplementing duration meet the following conditions: the sum of the preset exposure parameter and the target light supplementing duration is less than or equal to the target exposure duration; or the sum of the preset exposure parameter and the target exposure duration is less than or equal to the target light supplementing duration; and determining the initial light supplement time of the target integral time zone according to the exposure starting time of the last line or the exposure starting time of the first line.
In the embodiment of the present invention, a frame synchronization signal may be generated according to a set image frame rate, and the frame synchronization signal and a line synchronization signal may be sent to the image sensor 205 to control the image sensor 205 to perform image exposure, and the image sensor 205 may perform exposure immediately after receiving the frame synchronization signal and the line synchronization signal, or may perform exposure with a delay of a certain time, which is not limited in this embodiment. In other words, the exposure start timing of the image sensor 205 is determined by the frame synchronization signal.
In the embodiment of the present invention, the image sensor 205 acquires image information in a line-by-line exposure manner, and each time a line of image frames is exposed, an exposure line synchronization signal may be generated, where the exposure line synchronization signal reflects a line number of a currently exposed image frame of the image sensor 205.
In order to achieve the effect of uniform light supplement, the embodiment of the invention elaborately designs the target exposure duration and the target light supplement duration, and based on the relationship between the target exposure duration and the target light supplement duration, the light supplement position can be accurately controlled, and it is ensured that each line in one frame of image can be uniformly supplemented with light, and the two light supplement design principles are described in detail below.
The first light supplement design principle: in this case, the exposure start time of the last line may be used as the initial light supplement time, or a certain time that is greater than the exposure start time of the last line may be used as the initial light supplement time.
In this embodiment, the preset exposure parameter is a product of a line period of the image sensor 205 performing line-by-line exposure and a line number of the image sensor 205, and the line period and the line number may be preset based on performance of the image sensor 205, for example, the line period may be set to different times such as 10us and 15.2us, and the line number may be set to different line numbers such as 1080 lines and 1520 lines.
In above-mentioned light filling design, not only can realize even light filling, can also reduce light filling lamp power, for example, light filling lamp effective power is light filling time/frame cycle light filling lamp power, for example: assuming that the frame duration of the image sensor 205 is 40ms, the line period is 10us, the number of rows is 1080, and the target fill-in duration is 4ms, the target exposure duration needs to be at least: 1080 × 10us +4ms become 14.8ms, can realize the even light filling effect of whole lines, and simultaneously, the light filling lamp calculates according to 6 white light lamps totally 18W, and light filling lamp active power is: 4/40 ═ 18 is 1.8W, which is 90% lower than that in normal bright mode, so the power of supplementary lighting lamp can be greatly reduced.
In order to verify the light supplement effect of the first light supplement method, some specific embodiments are further provided in the embodiments of the present invention.
For example, assume that the imaging device parameter settings are as follows: the frame duration is 40ms, the line period is 15.2us, the number of lines is 1520 lines, the target fill light duration is 1.365ms, and according to the first fill light design mode, the required target exposure duration at least needs to be: 15.2us 1520+1.365ms 24.469ms, that is, when the target fill-in duration is 1.365ms, at least 24.469ms of exposure duration is required, and a uniform fill-in effect can be achieved. As shown in fig. 4, fig. 4 is a schematic diagram of simulating a current signal in a first fill-in light mode by an oscilloscope according to an embodiment of the present invention, where the oscilloscope illustrates: CH1 is a frame sync signal, CH3 is a row sync signal, CH2 is a fill lamp CURRENT, and CH4 is an LED _ CURRENT time.
In the first case: assuming that the actual exposure time is 20ms and the actual exposure time is smaller than the target exposure time 24.469ms in this embodiment, at this time, the target image is as shown in fig. 5, and fig. 5 is a schematic diagram of a first exposure result in the first fill-in mode according to the embodiment of the present invention, it can be seen that part of lines (a dashed frame region in fig. 5) of the image still receives no fill-in light, and the fill-in light effect is obviously uneven.
In the second case: assuming that the actual exposure time is 30ms and the actual exposure time is greater than the target exposure time 24.469ms in the present embodiment, fig. 6 is a schematic diagram of a second exposure result in the first fill-in light manner according to the present embodiment, and it can be seen that all rows of an image receive uniform fill-in light, so as to achieve the desired uniform fill-in light. Meanwhile, the image has no flicker, which indicates that the exposure and the supplementary lighting are synchronized.
It can be known from the above embodiments that, when the target fill-in light duration is 1.365ms, the uniform fill-in light effect can be achieved only when the target exposure duration is at least 24.469 ms.
In the light supplement design mode, the light supplement lamp is assumed to comprise 3 LED lamp beads, each lamp bead is 3W, and if the light supplement lamp works as a normally-on lamp mode, the power of the light supplement lamp is continuously 9W; if the calculation is performed according to the first supplementary lighting mode: assuming that each frame has a snapshot condition, that is, for each frame of image, the fill-in time of the fill-in lamp is 1.365ms (neglecting the start time of the fill-in lamp), then the total effective power is: 9, 1.365/40-0.31W, the effective power of the fill-in lamp is reduced by 96%.
The second light supplement design principle: the sum of the preset exposure parameter and the target exposure duration is less than or equal to the target light supplementing duration, and in this case, the exposure starting time of the first line may be used as the starting light supplementing time.
It can be known from the above content that because the exposure duration of actual need is generally 2ms ~ 4ms when taking a candid photograph night, that according to the falling Shutter sensor working principle, a light filling mode is to make the exposure time of target light filling time cover all rows completely, also can realize the effect of every row's even light filling, and the light filling intensity of other times can be adjusted according to actual conditions, can close and also can open weak light filling, just so can greatly reduced light filling lamp power.
For convenience of understanding, please refer to fig. 7, fig. 7 is a schematic diagram of a second fill-in light method according to an embodiment of the present invention, and an area included in a dashed box shown in fig. 7 is a target integration time zone. Performing light supplement in the target integral time zone, wherein the target light supplement duration needs to satisfy the following formula: the target light supplementing duration is greater than or equal to the line period x line number + the target exposure duration, and the effect of uniform light supplementing can be achieved.
In order to verify the light supplement effect of the second light supplement method, some specific embodiments are further provided in the embodiments of the present invention.
For example, assume that the parameter settings of the imaging apparatus 200 are as follows: the frame duration is 40ms, the line period is 15.2us, the number of lines is 1520 lines, the target exposure duration is 1ms, and according to the second fill lighting design mode, the required target fill lighting duration is at least: fig. 8 is a schematic diagram of simulating a current signal in the second fill-in mode by an oscilloscope according to an embodiment of the present invention, where us 1520+1ms is 24ms, and the oscilloscope illustrates: CH1 is a frame sync signal, CH3 is a row sync signal, CH2 is a fill lamp CURRENT, and CH4 is an LED _ CURRENT time.
In the first case: assuming that the actual light supplement time is 15ms and the actual light supplement time is less than the target light supplement time in this embodiment by 24ms, at this time, the target image is as shown in fig. 9, and fig. 9 is a schematic diagram of a first exposure result of the second light supplement manner according to this embodiment of the present invention, it can be seen that part of rows of the image still have no received light supplement, and the light supplement effect is obviously uneven.
In the second case: assuming that the actual light supplement time length is 24ms, the actual light supplement time length is consistent with the target light supplement time length in the embodiment, at this time, the target image is as shown in fig. 10, and fig. 10 is a schematic diagram of a second exposure result of the second light supplement manner provided in the embodiment of the present invention, it can be seen that all rows of the image receive uniform light supplement, so that light supplement expectation is achieved, and meanwhile, no flicker occurs in the image, which indicates that the exposure and light supplement are synchronized.
According to the embodiment, under the condition that the target exposure time is 1ms, the uniform light supplement effect can be realized only when the required target light supplement time is 24 ms.
In the light supplement design mode, the light supplement lamp is assumed to comprise 3 LED lamp beads, each lamp bead is 3W, and if the light supplement lamp works as a normally-on lamp mode, the power of the light supplement lamp is continuously 9W; if the calculation is performed according to a second supplementary lighting mode: assuming that each frame has a snapshot condition, the exposure time of each frame is 1ms, then for each frame of image, the time required for turning on the fill-in light is 24ms, and the total effective power is: 9 × 24/40 is 5.4W, the effective power of the fill light is reduced by 40%.
Optionally, to implement synchronous control of exposure and light supplement, the synchronous control unit 202 is further configured to: generating a first control instruction according to the target exposure duration, the frame synchronization signal and the line synchronization signal; the first control instruction is used for instructing the image sensor to start exposure; generating a second control instruction according to the initial light supplementing time and the target light supplementing duration; the second control instruction is used for indicating the light supplement lamp to start light supplement.
Through the embodiment, the synchronous control effect of exposure and light supplement can be realized, and uniform light supplement of each line can be ensured.
Optionally, in order to realize the snapshot of the target object and achieve the monitoring purpose, when obtaining the snapshot trigger signal, before controlling the fill-in light to turn on, the main control unit 201 is further configured to: determining whether a target snapshot object exists in the snapshot area; and if the target snapshot object exists, generating a snapshot trigger signal.
Optionally, in order to further reduce the light emitting power of the fill-in light, the main control unit 201 is further configured to determine that the fill-in light is in an off state or an on state if it is determined that the target snapshot object does not exist in the snapshot area; if the light supplement lamp is in the off state, controlling the light supplement lamp to keep the off state; and if the light supplement lamp is in the on state, controlling the light supplement lamp to be turned off or reducing the luminous intensity of the light supplement lamp.
Optionally, in order to facilitate the traveling of a pedestrian, an embodiment of the present invention further provides an implementation manner of dynamically lowering or turning off the light supplement lamp, that is, the main control unit 201 is further configured to control the light supplement lamp to be turned off when it is determined that no pedestrian exists in the snapshot area; when it is determined that the pedestrian exists in the snapshot area and the pedestrian is a non-target snapshot object, the light-emitting intensity of the light supplement lamp is controlled to be reduced.
Optionally, to notify the main control unit 201 that the currently received target image is an image of the target snapshot object, the synchronization control unit 202 is further configured to: and when the snapshot trigger signal is obtained, sending a feedback signal, wherein the feedback signal represents that the image sensor is triggered to start to snapshot a target image.
Based on the above light supplement implementation principle, an embodiment of the present invention further provides a light supplement method, please refer to fig. 11, where fig. 11 is a schematic flowchart of a light supplement method according to an embodiment of the present invention, the light supplement method may be applied to the imaging apparatus 200 of fig. 2, and may also be applied to other electronic devices with control capability, and when the method is applied to other electronic devices with control capability, the electronic device may perform data interaction with the imaging apparatus to implement a light supplement process for the imaging apparatus.
The light supplement method provided by the embodiment of the invention can comprise the following steps:
s301, when the snapshot trigger signal is generated, determining the exposure mode of the image sensor.
S302, if the exposure mode is a progressive exposure mode, determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in a target image; the target integration time zone represents that all rows of the target image are in an exposure state;
and S303, determining the initial light supplement time in the target integral time zone, and controlling the light supplement lamp to be turned on at the initial light supplement time.
S304, when the starting time of the light supplement lamp reaches the target light supplement time, controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp; and the target fill-in light duration is less than the frame duration of the target image.
Therefore, the light supplement method provided by the embodiment of the invention does not need to supplement light in the whole frame time of the target image, and the light supplement lamp can be turned off or the luminous intensity of the light supplement lamp can be reduced after the target light supplement time is reached, so that the luminous power of the light supplement lamp can be greatly reduced, and the light pollution and the influence on pedestrians can be reduced.
Optionally, an embodiment of the present invention further provides a method for determining an initial light supplement time to achieve an effect of uniform light supplement, and a possible implementation manner is also provided in the embodiment of the present invention, please refer to fig. 12, where fig. 12 is a schematic flowchart of step S302 provided in the embodiment of the present invention:
s302-1, sending a frame synchronization signal, a line synchronization signal and a target exposure duration to an image sensor;
s302-2, when the exposure starting time of the first line of the target image responded by the image sensor is received, determining the exposure starting time of the last line of the target image according to a preset line period, the exposure starting time and the target exposure duration;
the target exposure duration and the target light supplementing duration meet the following conditions: the sum of the preset exposure parameter and the target light supplementing duration is less than or equal to the target exposure duration; or the sum of the preset exposure parameter and the target exposure duration is less than or equal to the target light supplementing duration;
s302-3, determining the initial light supplement time of the target integration time zone according to the exposure starting time of the last line or the exposure starting time of the first line.
Optionally, in order to implement synchronous control of exposure and light supplement, an embodiment of the present invention further provides a possible implementation manner, that is, a first control instruction is generated according to a target exposure duration, a frame synchronization signal, and a line synchronization signal; the first control instruction is used for instructing the image sensor to start exposure; generating a second control instruction according to the initial light supplementing time and the target light supplementing duration; the second control instruction is used for indicating the light supplementing lamp to start light supplementing;
it can be understood that, through the above design of the duration of the light supplement to the target and the duration of the exposure to the target, an even light supplement effect to the target image can be achieved, and the implementation principle is as described in the above first light supplement manner and the second light supplement manner, which is not described herein again.
Through the embodiment, the synchronization of light supplement and exposure can be realized, the effect of uniform light supplement is achieved, the phenomenon of flicker of the presented target image can be prevented, and the image quality is reduced.
Optionally, for the purpose of monitoring the target snap-shot object, before the step S301, the method may further include: determining whether a target snapshot object exists in the snapshot area; and if the target snapshot object exists, generating a snapshot trigger signal.
Optionally, to further achieve the effect of reducing the light emitting power of the fill-in lamp, the method further includes: if the target snapshot object does not exist in the snapshot area, determining whether the light supplement lamp is in a closed state or an open state; if the light supplement lamp is in the off state, controlling the light supplement lamp to keep the off state; and if the light supplement lamp is in the on state, controlling the light supplement lamp to be turned off or controlling the light intensity of the light supplement lamp to be reduced.
Optionally, in order to dynamically control the turn-off of the light supplement lamp or dynamically reduce the light emitting intensity of the light supplement lamp, the implementation of the present invention further provides a possible implementation manner, that is, when it is determined that no pedestrian exists in the snapshot area, the light supplement lamp is controlled to turn off; when it is determined that the pedestrian exists in the snapshot area and the pedestrian is a non-target snapshot object, the light-emitting intensity of the light supplement lamp is controlled to be reduced.
Optionally, in order to determine that the currently obtained target image is an image of the target snapshot object, the method further includes: when a snapshot trigger signal is obtained, sending a feedback signal; wherein the feedback signal representation has triggered the image sensor to start capturing the target image.
According to the light supplement method provided by the embodiment of the invention, when a snapshot trigger signal is obtained, a light supplement lamp is controlled to be turned on; determining whether the starting time of the light supplement lamp reaches the target light supplement time; the target light supplementing duration is less than the frame duration of the target image; and if the starting time reaches the target light supplementing time, controlling the light supplementing lamp to be turned off or reducing the light emitting intensity of the light supplementing lamp. Therefore, the light supplement lamp can be turned off or the luminous intensity of the light supplement lamp can be reduced after the target light supplement time is reached without performing light supplement on the whole frame time of the target image, so that the luminous power of the light supplement lamp can be greatly reduced, and the light pollution and the influence on pedestrians are reduced.
Referring to fig. 13, fig. 13 is a block diagram of an electronic device according to an embodiment of the present invention. The electronic equipment can perform data interaction with the imaging device so as to achieve the effect of light supplement control on the imaging device.
The electronic device 400 comprises a communication interface 401, a processor 402 and a memory 403. The processor 402, memory 403, and communication interface 401 are electrically connected to each other, directly or indirectly, to enable the transfer or interaction of data. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The memory 403 may be used to store software programs and modules, such as program instructions/modules corresponding to the light supplement method provided in the embodiment of the present invention, and the processor 402 executes the software programs and modules stored in the memory 403, so as to execute various functional applications and data processing. The communication interface 401 may be used for communicating signaling or data with other node devices. The electronic device 400 may have a plurality of communication interfaces 401 in the present invention.
The Memory 403 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The processor 402 may be an integrated circuit chip having signal processing capabilities. The Processor may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), etc.; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.
An embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the light supplement method according to any one of the foregoing embodiments. The computer readable storage medium may be, but is not limited to, various media that can store program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a PROM, an EPROM, an EEPROM, a magnetic or optical disk, etc.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for supplementing light, the method comprising:
when a snapshot trigger signal is generated, determining an exposure mode of the image sensor;
if the exposure mode is a progressive exposure mode, determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in the target image; the target integration time zone represents that all rows of the target image are in an exposure state;
determining an initial light supplement time in the target integral time zone, and controlling a light supplement lamp to be turned on at the initial light supplement time;
when the starting time of the light supplement lamp reaches the target light supplement time, controlling the light supplement lamp to be turned off or reducing the light emitting intensity of the light supplement lamp; and the target fill lighting duration is less than the frame duration of the target image.
2. A light supplement method according to claim 1, wherein determining an initial light supplement time in the target integration time zone, and controlling a light supplement lamp to turn on at the initial light supplement time comprises:
sending a frame synchronization signal, a line synchronization signal and a target exposure duration to the image sensor;
when receiving the exposure starting time of the first line of the target image responded by the image sensor, determining the exposure starting time of the last line of the target image according to a preset line period, the exposure starting time and the target exposure duration;
wherein the target exposure duration and the target light supplement duration satisfy: the sum of the preset exposure parameter and the target light supplementing duration is less than or equal to the target exposure duration; or the sum of the preset exposure parameter and the target exposure duration is less than or equal to the target light supplementing duration;
and determining the initial light supplement time of the target integral time zone according to the exposure starting time of the last line or the exposure starting time of the first line.
3. The light supplement method according to claim 2, further comprising:
generating a first control instruction according to the target exposure duration, the frame synchronization signal and the line synchronization signal; the first control instruction is used for instructing the image sensor to start exposure;
generating a second control instruction according to the initial light supplementing time and the target light supplementing duration; and the second control instruction is used for indicating the light supplement lamp to start light supplement.
4. The light supplement method according to claim 1, wherein before determining the exposure mode of the image sensor when the snapshot trigger signal is received, the method further comprises:
determining whether a target snapshot object exists in the snapshot area;
and if the target snapshot object exists, generating the snapshot trigger signal.
5. The light supplement method according to claim 4, further comprising:
if it is determined that the target snapshot object does not exist in the snapshot area, determining whether the light supplement lamp is in a closed state or an open state;
if the light supplement lamp is in the off state, controlling the light supplement lamp to keep the off state;
and if the light supplement lamp is in an on state, controlling the light supplement lamp to be turned off or reducing the luminous intensity of the light supplement lamp.
6. A light supplement method according to claim 1 or 5, wherein controlling the light supplement lamp to turn off or reduce the light intensity of the light supplement lamp comprises:
when it is determined that no pedestrian exists in the snapshot area, the light supplement lamp is controlled to be turned off;
and when it is determined that the snapshot area contains the pedestrian and the pedestrian is a non-target snapshot object, controlling to reduce the luminous intensity of the light supplement lamp.
7. The light supplement method according to claim 1, further comprising:
when a snapshot trigger signal is obtained, sending a feedback signal; wherein the feedback signal characterization has triggered the image sensor to begin capturing the target image.
8. An imaging device is characterized by comprising a main control unit, a synchronous control unit, an image sensor, a light supplementing lamp driving unit and a light supplementing lamp; the main control unit and the image sensor are respectively electrically connected with the synchronous control unit; the light supplement lamp driving unit is electrically connected with the synchronous control unit and the light supplement lamp respectively;
the main control unit is used for determining an exposure mode of the image sensor when a snapshot trigger signal is generated; if the exposure mode is a line-by-line exposure mode, sending the snapshot trigger signal and the line-by-line exposure mode to the synchronous control unit;
the synchronous control unit is used for determining a target integral time zone according to the integral time after the image sensor starts to expose the target image; the progressive exposure mode represents that a time difference of preset duration exists between exposure starting points of two adjacent lines in the target image; the target integration time zone represents that all rows of the target image are in an exposure state; determining an initial light supplement time in the target integral time zone, and controlling the light supplement lamp driving unit to drive the light supplement lamp to be turned on at the initial light supplement time;
the main control unit is further configured to control the light supplement lamp to be turned off or reduce the light emitting intensity of the light supplement lamp when the turn-on duration of the light supplement lamp reaches a target light supplement duration; and the target fill lighting duration is less than the frame duration of the target image.
9. An electronic device, comprising a processor and a memory, wherein the memory stores a computer program executable by the processor, and the processor can execute the computer program to implement the fill light method according to any one of claims 1 to 7.
10. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the light filling method according to any one of claims 1 to 7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115220286A (en) * | 2022-07-18 | 2022-10-21 | 上海商米科技集团股份有限公司 | Code scanning engine scanning method, system, code scanning device and storage medium |
| CN116600211A (en) * | 2023-06-09 | 2023-08-15 | 苏州洞悉科技有限公司 | Imaging system |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110317991A1 (en) * | 2010-06-25 | 2011-12-29 | Apple Inc. | Flash control for electronic rolling shutter |
| CN107071292A (en) * | 2017-03-10 | 2017-08-18 | 深圳市金立通信设备有限公司 | A kind of light compensation method and terminal |
| CN110493536A (en) * | 2019-05-31 | 2019-11-22 | 杭州海康威视数字技术股份有限公司 | The method of image collecting device and Image Acquisition |
| CN110493491A (en) * | 2019-05-31 | 2019-11-22 | 杭州海康威视数字技术股份有限公司 | A kind of image collecting device and image capture method |
| CN111741185A (en) * | 2020-06-24 | 2020-10-02 | 杭州海康威视数字技术股份有限公司 | Light supplement control method, device, system and equipment and storage medium |
| CN111818271A (en) * | 2020-06-30 | 2020-10-23 | 浙江大华技术股份有限公司 | Method for eliminating image flicker, electronic device and storage medium |
| CN111818272A (en) * | 2020-06-30 | 2020-10-23 | 浙江大华技术股份有限公司 | Method for eliminating image flicker, electronic device and storage medium |
| CN112040139A (en) * | 2020-09-09 | 2020-12-04 | 绍兴埃瓦科技有限公司 | Light supplementing method for camera imaging |
| CN112351184A (en) * | 2019-08-07 | 2021-02-09 | 杭州海康威视数字技术股份有限公司 | Camera light supplementing method and device |
| CN112437206A (en) * | 2020-11-25 | 2021-03-02 | 杭州海康威视数字技术股份有限公司 | Light supplement control method and camera |
| CN112672009A (en) * | 2020-12-14 | 2021-04-16 | 浙江大华技术股份有限公司 | Video processing method, device, equipment and storage medium |
| CN113225876A (en) * | 2021-05-28 | 2021-08-06 | 浙江大华技术股份有限公司 | Light supplementing method and device for monitoring equipment, storage medium and electronic equipment |
| CN113286094A (en) * | 2021-05-27 | 2021-08-20 | 重庆紫光华山智安科技有限公司 | Automatic image exposure method, device, equipment and medium |
| CN113438424A (en) * | 2021-06-04 | 2021-09-24 | 杭州海康威视数字技术股份有限公司 | Synchronous exposure processing method, device, system and equipment |
-
2021
- 2021-12-16 CN CN202111547693.2A patent/CN114245042B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110317991A1 (en) * | 2010-06-25 | 2011-12-29 | Apple Inc. | Flash control for electronic rolling shutter |
| CN107071292A (en) * | 2017-03-10 | 2017-08-18 | 深圳市金立通信设备有限公司 | A kind of light compensation method and terminal |
| WO2020238806A1 (en) * | 2019-05-31 | 2020-12-03 | 杭州海康威视数字技术股份有限公司 | Image collection apparatus and photography method |
| CN110493536A (en) * | 2019-05-31 | 2019-11-22 | 杭州海康威视数字技术股份有限公司 | The method of image collecting device and Image Acquisition |
| CN110493491A (en) * | 2019-05-31 | 2019-11-22 | 杭州海康威视数字技术股份有限公司 | A kind of image collecting device and image capture method |
| CN112351184A (en) * | 2019-08-07 | 2021-02-09 | 杭州海康威视数字技术股份有限公司 | Camera light supplementing method and device |
| CN111741185A (en) * | 2020-06-24 | 2020-10-02 | 杭州海康威视数字技术股份有限公司 | Light supplement control method, device, system and equipment and storage medium |
| CN111818272A (en) * | 2020-06-30 | 2020-10-23 | 浙江大华技术股份有限公司 | Method for eliminating image flicker, electronic device and storage medium |
| CN111818271A (en) * | 2020-06-30 | 2020-10-23 | 浙江大华技术股份有限公司 | Method for eliminating image flicker, electronic device and storage medium |
| CN112040139A (en) * | 2020-09-09 | 2020-12-04 | 绍兴埃瓦科技有限公司 | Light supplementing method for camera imaging |
| CN112437206A (en) * | 2020-11-25 | 2021-03-02 | 杭州海康威视数字技术股份有限公司 | Light supplement control method and camera |
| CN112672009A (en) * | 2020-12-14 | 2021-04-16 | 浙江大华技术股份有限公司 | Video processing method, device, equipment and storage medium |
| CN113286094A (en) * | 2021-05-27 | 2021-08-20 | 重庆紫光华山智安科技有限公司 | Automatic image exposure method, device, equipment and medium |
| CN113225876A (en) * | 2021-05-28 | 2021-08-06 | 浙江大华技术股份有限公司 | Light supplementing method and device for monitoring equipment, storage medium and electronic equipment |
| CN113438424A (en) * | 2021-06-04 | 2021-09-24 | 杭州海康威视数字技术股份有限公司 | Synchronous exposure processing method, device, system and equipment |
Non-Patent Citations (3)
| Title |
|---|
| FRANK H. BORSATO 等: ""A Fast and Accurate Eye Tracker Using Stroboscopic Differential Lighting"", 《2015 IEEE INTERNATIONAL CONFERENCE ON COMPUTER VISION WORKSHOP (ICCVW)》 * |
| 余玛俐: ""高灰度级图像的生成及多曝光融合技术研究"", 《中国学位论文全文数据库》 * |
| 林凡: ""影响数字摄像机动态范围的因素"", 《现代电视技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115220286A (en) * | 2022-07-18 | 2022-10-21 | 上海商米科技集团股份有限公司 | Code scanning engine scanning method, system, code scanning device and storage medium |
| CN115220286B (en) * | 2022-07-18 | 2024-02-27 | 上海商米科技集团股份有限公司 | Code scanning engine scanning method and system, code scanning equipment and storage medium |
| CN116600211A (en) * | 2023-06-09 | 2023-08-15 | 苏州洞悉科技有限公司 | Imaging system |
| CN116600211B (en) * | 2023-06-09 | 2024-01-02 | 苏州洞悉科技有限公司 | Imaging system |
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