CN110985909A - Foldable fire-fighting lamp - Google Patents
Foldable fire-fighting lamp Download PDFInfo
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- CN110985909A CN110985909A CN201911079203.3A CN201911079203A CN110985909A CN 110985909 A CN110985909 A CN 110985909A CN 201911079203 A CN201911079203 A CN 201911079203A CN 110985909 A CN110985909 A CN 110985909A
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- 238000013016 damping Methods 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims description 39
- 238000000605 extraction Methods 0.000 claims description 23
- 239000000779 smoke Substances 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 17
- 238000003709 image segmentation Methods 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 6
- 238000007499 fusion processing Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 9
- 238000003860 storage Methods 0.000 abstract description 4
- 230000007306 turnover Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/40—Hand grips
- F21V21/406—Hand grips for portable lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
- F21V33/0056—Audio equipment, e.g. music instruments, radios or speakers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/50—Extraction of image or video features by performing operations within image blocks; by using histograms, e.g. histogram of oriented gradients [HoG]; by summing image-intensity values; Projection analysis
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention provides a foldable fire fighting lamp, comprising: the LED lamp comprises a base body and an LED lamp, wherein a hinge seat is arranged on the rear side of the base body, a support rod of the LED lamp is hinged to the hinge seat through damping connection, a cutting groove is formed in the base body below the hinge seat, the LED lamp can be placed in the cutting groove in a turnover mode, and a storage battery is arranged at the lower end of the base body; the upper end of the base body is provided with a lifting handle. The LED lamp of the foldable fire-fighting lamp can be relatively rotated, turned over and placed in the cutting groove of the base body, and is convenient to store, transport or transport.
Description
Technical Field
The invention relates to a fire fighting device, in particular to a foldable fire fighting lamp.
Background
The fire-fighting emergency lamp is made of industrial plastics and high-brightness bulbs, the color is mainly white, two arrows are arranged on the surface of the lamp, and the lamp has the characteristics of no aging of materials, quick heat dissipation, impact resistance and the like. The fire-fighting emergency lamp has the installation modes of wall-mounted type, portable type and hanging type. The emergency lighting device is the most common lighting tool in fire emergency, the emergency time is long, and the high brightness has the automatic emergency function in power failure. The fire-fighting emergency lamp has the characteristics of low power consumption, high brightness, long service life and the like, is provided with a power switch and a display lamp, and is suitable for public places such as factories, hotels, schools, units and the like for emergency lighting during power failure. Current fire control lamp generally includes base body and the LED lamp of setting on base body, and the LED lamp is generally fixed on base body, can not fold and accomodate, and the in-process of producer production transportation is not convenient for accomodate, and occupation space is great.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a fire-fighting lamp which is simple in structure, can be folded in a base body and is convenient to store.
(II) technical scheme
In order to solve the above technical problems, the present invention provides a foldable fire fighting lamp, comprising: the LED lamp comprises a base body and an LED lamp, wherein a hinge seat is arranged on the rear side of the base body, a support rod of the LED lamp is hinged to the hinge seat through damping connection, a cutting groove is formed in the base body below the hinge seat, the LED lamp can be placed in the cutting groove in a turnover mode, and a storage battery is arranged at the lower end of the base body; the upper end of the base body is provided with a lifting handle. The LED lamp of current fire control lamp is fixed articulated generally on base body, and the producer is not convenient for accomodate in the production transportation, and occupation space is great, and the LED lamp of the collapsible fire control lamp of this technical scheme can rotate the upset relatively and place in base body's grooving, is convenient for accomodate transport or transportation.
The fire-fighting lamp is generally used in the escape way for emergency lighting uses, but if meet dangerous situations such as conflagration, can not remind people to select the correct passway for escaping, people also can not confirm whether safe feasible of current passageway, therefore, the fire-fighting lamp still includes:
the voice playing unit is arranged on the base body and used for playing the voice playing file corresponding to the no-pass mode when the smoke acquisition signal is received and playing the voice playing file corresponding to the pass-pass mode when the smoke acquisition signal is not received;
the high-definition camera is arranged on the base body and used for shooting images of the interior of the area where the fire-fighting lamp is located so as to obtain an internal image and outputting the internal image;
the first feature extraction unit is connected with the high-definition camera and used for acquiring multiple frames of internal images which are continuous in time and executing the following operations on each frame of internal image: determining each brightness value of each pixel point of the internal image, and performing histogram processing on the internal image based on each brightness value of each pixel point to obtain a corresponding histogram distribution graph;
the second feature extraction unit is connected with the first feature extraction unit and used for acquiring each histogram distribution graph corresponding to each internal image of a plurality of frames, analyzing the variation degree of each histogram distribution graph to acquire the image-level variation degree, and sending a position correction signal when the image-level variation degree exceeds the limit, and sending a position holding signal when the image-level variation degree does not exceed the limit; in the second feature extraction unit, analyzing the degree of change of each histogram distribution map includes: for each luminance distribution range, a degree of change of the respective histogram profiles within the luminance distribution range is determined as a sub-range degree of change, the degree of change of the image level is calculated based on the respective sub-range degrees of change of the respective luminance distribution ranges and the respective weights of the respective luminance distribution ranges, the respective weights of the respective luminance distribution ranges are not the same, and the weights are smaller for the luminance distribution ranges farther from 125 for the respective weights of the respective luminance distribution ranges.
Further, the method also comprises the following steps:
a correction amount extraction unit, connected to the second feature extraction unit, for determining a position deviation correction amount for the high definition camera according to the image level change degree when receiving the position correction signal, and for determining the position deviation correction amount for the high definition camera to be zero when receiving the position maintaining signal;
the liquid crystal display unit is arranged on the body of the high-definition camera, is connected with the correction quantity extraction unit and is used for receiving the position deviation correction quantity and displaying the position deviation correction quantity in real time;
the automatic adjusting unit is connected with the high-definition camera and used for receiving the internal image, determining the fuzzy degree of the internal image, and carrying out blocking processing on the internal image based on the fuzzy degree of the internal image so as to obtain a plurality of image blocks with the same size, and executing the following processing on each image block: acquiring a binarization threshold of the image blocks based on an OTSU algorithm, acquiring each binarization threshold of each image block in the neighborhood of the image blocks based on the OTSU algorithm, adjusting the binarization thresholds of the image blocks based on each binarization threshold of each image block in the neighborhood of the image blocks to obtain adjusted thresholds of the image blocks, and outputting the adjusted thresholds of the image blocks;
a block merging unit, connected to the automatic adjustment unit, configured to receive the plurality of image blocks and the adjusted threshold corresponding to each image block, perform binarization processing on the image blocks based on the adjusted threshold corresponding to each image block to obtain binarized blocks, merge the binarized blocks corresponding to each image block, perform edge fusion on the merged image to obtain a fused image, and output the fused image as a fusion processed image;
the isolated point removing unit is connected with the block merging unit and used for receiving the fusion processing image and removing isolated points in the fusion processing image so as to obtain and output a corresponding isolated point removed image;
the image searching unit is connected with the isolated point removing unit and used for receiving the isolated point removing image, searching the isolated point removing image for target outlines to obtain the outlines of all targets, taking the area where the outline of the target with the largest size is located as a to-be-processed area, and outputting the to-be-processed area;
the image segmentation unit is connected with the image search unit and used for receiving the isolated point removal image and the to-be-processed area and taking the isolated point removal image with the to-be-processed area removed as a search residual area;
the image segmentation unit is connected with the image segmentation unit and used for receiving the to-be-processed area, determining the energy size distributed in different frequency bands in the to-be-processed area, taking a plurality of frequency bands with energy less than or equal to a limited amount as a plurality of to-be-processed frequency bands, and performing band-pass filtering processing on the to-be-processed area based on the plurality of to-be-processed frequency bands to obtain a band-pass filtering area from the to-be-processed area and with the plurality of to-be-processed frequency bands, and further used for obtaining a band-pass reserved area from which the band-pass filtering area is removed from the to-be-processed area;
a two-stage combining unit, connected to the image subdividing unit and the image segmenting unit, respectively, and configured to perform gain processing on the band-pass filtering region based on a dynamic distribution range of the band-pass filtering region to obtain a corresponding gain processing region, to combine the gain processing region and the band-pass preserving region to obtain a combined region corresponding to the region to be processed, and to combine the combined region and the search remaining region to obtain a local gain image corresponding to the isolated point removed image;
and the smoke extraction unit is respectively connected with the voice playing unit and the two-stage combination unit and is used for receiving the local gain image, acquiring the gray value of each pixel point in the local gain image, setting the pixel points with the gray values less than or equal to a preset smoke gray threshold value as smoke pixel points, and sending a smoke acquisition signal when the number of the smoke pixel points exceeds the limit.
Further, in the automatic adjustment unit, adjusting the binarization threshold values of the image blocks based on the respective binarization threshold values of the respective image blocks in the image block neighborhood to obtain adjusted threshold values of the image blocks includes: the higher the matching degree of the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
Further, in the two-stage combination unit, the narrower the dynamic distribution range of the band-pass filtering region is, the greater the gain processing strength performed on the band-pass filtered image is.
Further, the smaller the degree of blur of the internal image is, the greater the number of image blocks obtained by performing the blocking process on the internal image is.
(III) advantageous effects
The foldable fire fighting lamp is simple in integral structure, the LED lamp can rotate and adjust the angle relative to the base body, the LED lamp rotates downwards and can be folded and stored in the cutting groove of the base body, the occupied space is small, and the foldable fire fighting lamp is convenient to store, transport and transport.
Drawings
FIG. 1 is a schematic view of a collapsible fire fighting lamp according to the present invention;
wherein: 1 is a base body, 2 is an LED lamp, 3 is a hinge seat, 4 is a support rod, 5 is a cutting groove, 6 is a storage battery and 7 is a handle.
Detailed Description
Referring to fig. 1, the present invention provides a foldable fire fighting lamp comprising: the LED lamp comprises a base body 1 and an LED lamp 2, wherein a hinge seat 3 is arranged on the rear side of the base body 1, a support rod 4 of the LED lamp 2 is hinged to the hinge seat 3 through damping connection, a cutting groove 5 is formed in the base body 1 below the hinge seat 3, the LED lamp 2 can be placed in the cutting groove 5 in a turnover mode, and a storage battery 6 is arranged at the lower end of the base body 1; the upper end of the base body 1 is provided with a handle 7.
The LED lamp of current fire control lamp generally is fixed articulated on base body, and the producer is not convenient for accomodate in the production transportation, and occupation space is great, and the LED lamp of the collapsible fire control lamp of this embodiment can rotate the upset relatively and place in base body's grooving, is convenient for accomodate transport or transportation, holistic simple structure.
In daily use, the fire control lamp is generally used in the escape way for emergency lighting uses, but if meet dangerous situations such as conflagration, can not remind people to select correct passway for escaping, people also can not confirm whether safe feasible of current passageway, consequently, this embodiment fire control lamp still includes:
the voice playing unit is arranged on the base body 1 and used for playing the voice playing file corresponding to the no-pass mode when receiving the smoke acquisition signal and playing the voice playing file corresponding to the pass-pass mode when not receiving the smoke acquisition signal;
the high-definition camera is arranged on the base body 1 and used for shooting images of the interior of the area where the fire fighting lamp is located so as to obtain an internal image and outputting the internal image;
the first feature extraction unit is connected with the high-definition camera and used for acquiring multiple frames of internal images which are continuous in time and executing the following operations on each frame of internal image: determining each brightness value of each pixel point of the internal image, and performing histogram processing on the internal image based on each brightness value of each pixel point to obtain a corresponding histogram distribution graph;
the second feature extraction unit is connected with the first feature extraction unit and used for acquiring each histogram distribution graph corresponding to each internal image of a plurality of frames, analyzing the variation degree of each histogram distribution graph to acquire the image-level variation degree, and sending a position correction signal when the image-level variation degree exceeds the limit, and sending a position holding signal when the image-level variation degree does not exceed the limit; in the second feature extraction unit, analyzing the degree of change of each histogram distribution map includes: for each luminance distribution range, a degree of change of the respective histogram profiles within the luminance distribution range is determined as a sub-range degree of change, the degree of change of the image level is calculated based on the respective sub-range degrees of change of the respective luminance distribution ranges and the respective weights of the respective luminance distribution ranges, the respective weights of the respective luminance distribution ranges are not the same, and the weights are smaller for the luminance distribution ranges farther from 125 for the respective weights of the respective luminance distribution ranges.
This embodiment fire control lamp still includes:
a correction amount extraction unit, connected to the second feature extraction unit, for determining a position deviation correction amount for the high definition camera according to the image level change degree when receiving the position correction signal, and for determining the position deviation correction amount for the high definition camera to be zero when receiving the position maintaining signal;
the liquid crystal display unit is arranged on the body of the high-definition camera, is connected with the correction quantity extraction unit and is used for receiving the position deviation correction quantity and displaying the position deviation correction quantity in real time;
the automatic adjusting unit is connected with the high-definition camera and used for receiving the internal image, determining the fuzzy degree of the internal image, and carrying out blocking processing on the internal image based on the fuzzy degree of the internal image so as to obtain a plurality of image blocks with the same size, and executing the following processing on each image block: acquiring a binarization threshold of the image blocks based on an OTSU algorithm, acquiring each binarization threshold of each image block in the neighborhood of the image blocks based on the OTSU algorithm, adjusting the binarization thresholds of the image blocks based on each binarization threshold of each image block in the neighborhood of the image blocks to obtain adjusted thresholds of the image blocks, and outputting the adjusted thresholds of the image blocks;
a block merging unit, connected to the automatic adjustment unit, configured to receive the plurality of image blocks and the adjusted threshold corresponding to each image block, perform binarization processing on the image blocks based on the adjusted threshold corresponding to each image block to obtain binarized blocks, merge the binarized blocks corresponding to each image block, perform edge fusion on the merged image to obtain a fused image, and output the fused image as a fusion processed image;
the isolated point removing unit is connected with the block merging unit and used for receiving the fusion processing image and removing isolated points in the fusion processing image so as to obtain and output a corresponding isolated point removed image;
the image searching unit is connected with the isolated point removing unit and used for receiving the isolated point removing image, searching the isolated point removing image for target outlines to obtain the outlines of all targets, taking the area where the outline of the target with the largest size is located as a to-be-processed area, and outputting the to-be-processed area;
the image segmentation unit is connected with the image search unit and used for receiving the isolated point removal image and the to-be-processed area and taking the isolated point removal image with the to-be-processed area removed as a search residual area;
the image segmentation unit is connected with the image segmentation unit and used for receiving the to-be-processed area, determining the energy size distributed in different frequency bands in the to-be-processed area, taking a plurality of frequency bands with energy less than or equal to a limited amount as a plurality of to-be-processed frequency bands, and performing band-pass filtering processing on the to-be-processed area based on the plurality of to-be-processed frequency bands to obtain a band-pass filtering area from the to-be-processed area and with the plurality of to-be-processed frequency bands, and further used for obtaining a band-pass reserved area from which the band-pass filtering area is removed from the to-be-processed area;
a two-stage combining unit, connected to the image subdividing unit and the image segmenting unit, respectively, and configured to perform gain processing on the band-pass filtering region based on a dynamic distribution range of the band-pass filtering region to obtain a corresponding gain processing region, to combine the gain processing region and the band-pass preserving region to obtain a combined region corresponding to the region to be processed, and to combine the combined region and the search remaining region to obtain a local gain image corresponding to the isolated point removed image;
and the smoke extraction unit is respectively connected with the voice playing unit and the two-stage combination unit and is used for receiving the local gain image, acquiring the gray value of each pixel point in the local gain image, setting the pixel points with the gray values less than or equal to a preset smoke gray threshold value as smoke pixel points, and sending a smoke acquisition signal when the number of the smoke pixel points exceeds the limit.
Wherein, in the automatic adjustment unit, adjusting the binarization threshold of the image block based on each binarization threshold of each image block in the image block neighborhood to obtain an adjusted threshold of the image block comprises: the higher the matching degree of the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
In the two-stage combination unit, the narrower the dynamic distribution range of the band-pass filtering region is, the greater the gain processing strength performed on the band-pass filtered image is; the smaller the degree of blur of the internal image is, the larger the number of image blocks obtained by performing block processing on the internal image is.
In the present embodiment, the image search apparatus is implemented using a PLD device. Programmable Logic device pld (programmable Logic device) is an important branch of ASIC, and is a semi-custom circuit produced by manufacturers as a general-purpose device, and users can program the device to implement required functions. The programmable logic array PLA (programmable logic array) is composed of a programmable AND array and a programmable OR array.
Aiming at the technical problem that the safety inside a safety passage cannot be monitored in the prior art, the foldable fire fighting lamp of the embodiment determines whether personnel can pass through the safety entrance or not at present through extracting the smoke inside the passage, so that the safety of the personnel is guaranteed; a two-stage segmentation mechanism is adopted to carry out targeted enhancement operation on a local area which needs to be enhanced most in an image to be processed, no enhancement operation is carried out on the rest area, and a two-stage combination mechanism is adopted to carry out image reconstruction, so that the speed of image processing is ensured; an automatic self-adaptive binary threshold value adjusting mechanism is established, and particularly, the neighborhood-referenced image threshold value is adjusted, so that convenience is provided for subsequent image processing; on the basis of analyzing the image content, determining the position deviation correction quantity of the high-definition camera, and displaying the position deviation correction quantity in real time so as to facilitate the user to carry out field correction operation on the high-definition camera.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A collapsible fire fighting lamp, comprising: base body (1) and LED lamp (2), base body (1) rear side is provided with hinge seat (3), branch (4) of LED lamp (2) connect through the damping and articulate on hinge seat (3), base body (1) is in hinge seat (3) below position is provided with grooving (5), LED lamp (2) can overturn and place in grooving (5), the lower extreme of base body (1) is provided with battery (6).
2. A collapsible fire fighting lamp as claimed in claim 1, characterised in that the upper end of the base body (1) is provided with a carrying handle (7).
3. The collapsible fire fighting lamp of claim 1, further comprising:
the voice playing unit is arranged on the base body (1) and used for playing the voice playing file corresponding to the no pass when the smoke acquisition signal is received and playing the voice playing file corresponding to the pass when the smoke acquisition signal is not received;
the high-definition camera is arranged on the base body (1) and used for shooting images of the interior of the area where the fire-fighting lamp is located so as to obtain an internal image and outputting the internal image;
the first feature extraction unit is connected with the high-definition camera and used for acquiring multiple frames of internal images which are continuous in time and executing the following operations on each frame of internal image: determining each brightness value of each pixel point of the internal image, and performing histogram processing on the internal image based on each brightness value of each pixel point to obtain a corresponding histogram distribution graph;
the second feature extraction unit is connected with the first feature extraction unit and used for acquiring each histogram distribution graph corresponding to each internal image of a plurality of frames, analyzing the variation degree of each histogram distribution graph to acquire the image-level variation degree, and sending a position correction signal when the image-level variation degree exceeds the limit, and sending a position holding signal when the image-level variation degree does not exceed the limit; in the second feature extraction unit, analyzing the degree of change of each histogram distribution map includes: for each luminance distribution range, a degree of change of the respective histogram profiles within the luminance distribution range is determined as a sub-range degree of change, the degree of change of the image level is calculated based on the respective sub-range degrees of change of the respective luminance distribution ranges and the respective weights of the respective luminance distribution ranges, the respective weights of the respective luminance distribution ranges are not the same, and the weights are smaller for the luminance distribution ranges farther from 125 for the respective weights of the respective luminance distribution ranges.
4. The collapsible fire fighting lamp of claim 3, further comprising:
a correction amount extraction unit, connected to the second feature extraction unit, for determining a position deviation correction amount for the high definition camera according to the image level change degree when receiving the position correction signal, and for determining the position deviation correction amount for the high definition camera to be zero when receiving the position maintaining signal;
the automatic adjusting unit is connected with the high-definition camera and used for receiving the internal image, determining the fuzzy degree of the internal image, and carrying out blocking processing on the internal image based on the fuzzy degree of the internal image so as to obtain a plurality of image blocks with the same size, and executing the following processing on each image block: acquiring a binarization threshold of the image blocks based on an OTSU algorithm, acquiring each binarization threshold of each image block in the neighborhood of the image blocks based on the OTSU algorithm, adjusting the binarization thresholds of the image blocks based on each binarization threshold of each image block in the neighborhood of the image blocks to obtain adjusted thresholds of the image blocks, and outputting the adjusted thresholds of the image blocks;
a block merging unit, connected to the automatic adjustment unit, configured to receive the plurality of image blocks and the adjusted threshold corresponding to each image block, perform binarization processing on the image blocks based on the adjusted threshold corresponding to each image block to obtain binarized blocks, merge the binarized blocks corresponding to each image block, perform edge fusion on the merged image to obtain a fused image, and output the fused image as a fusion processed image;
the isolated point removing unit is connected with the block merging unit and used for receiving the fusion processing image and removing isolated points in the fusion processing image so as to obtain and output a corresponding isolated point removed image;
the image searching unit is connected with the isolated point removing unit and used for receiving the isolated point removing image, searching the isolated point removing image for target outlines to obtain the outlines of all targets, taking the area where the outline of the target with the largest size is located as a to-be-processed area, and outputting the to-be-processed area;
the image segmentation unit is connected with the image search unit and used for receiving the isolated point removal image and the to-be-processed area and taking the isolated point removal image with the to-be-processed area removed as a search residual area;
the image segmentation unit is connected with the image segmentation unit and used for receiving the to-be-processed area, determining the energy size distributed in different frequency bands in the to-be-processed area, taking a plurality of frequency bands with energy less than or equal to a limited amount as a plurality of to-be-processed frequency bands, and performing band-pass filtering processing on the to-be-processed area based on the plurality of to-be-processed frequency bands to obtain a band-pass filtering area from the to-be-processed area and with the plurality of to-be-processed frequency bands, and further used for obtaining a band-pass reserved area from which the band-pass filtering area is removed from the to-be-processed area;
a two-stage combining unit, connected to the image subdividing unit and the image segmenting unit, respectively, and configured to perform gain processing on the band-pass filtering region based on a dynamic distribution range of the band-pass filtering region to obtain a corresponding gain processing region, to combine the gain processing region and the band-pass preserving region to obtain a combined region corresponding to the region to be processed, and to combine the combined region and the search remaining region to obtain a local gain image corresponding to the isolated point removed image;
and the smoke extraction unit is respectively connected with the voice playing unit and the two-stage combination unit and is used for receiving the local gain image, acquiring the gray value of each pixel point in the local gain image, setting the pixel points with the gray values less than or equal to a preset smoke gray threshold value as smoke pixel points, and sending a smoke acquisition signal when the number of the smoke pixel points exceeds the limit.
5. The foldable fire fighting lamp of claim 4, wherein in the automatic adjustment unit, adjusting the binarization threshold values of the image patches based on the respective binarization threshold values of the respective image patches of the image patch neighborhood to obtain the adjusted threshold values of the image patches comprises: the higher the matching degree of the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
6. A collapsible fire fighting lamp as recited in claim 5, characterised in that in said two stage combination unit, the narrower the dynamic distribution range of said band pass filtered regions, the more intensive the gain processing performed on said band pass filtered images.
7. The foldable fire fighting lamp of claim 6, wherein the smaller the degree of blur of the internal image, the greater the number of image patches obtained by the blocking process of the internal image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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