CN115331129A - Junk data identification method based on unmanned aerial vehicle and artificial intelligence - Google Patents
Junk data identification method based on unmanned aerial vehicle and artificial intelligence Download PDFInfo
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Abstract
The invention relates to an image recognition technology, in particular to a junk data recognition method based on an unmanned aerial vehicle and artificial intelligence, which comprises the following steps: collecting high-definition video image data with large data volume through unmanned aerial vehicle operation, and performing interframe difference processing on videos to obtain effective high-definition pictures; preprocessing the frame-extracted image to obtain a data set; the classifier determines whether garbage exists in the grids or not by carrying out grid division on the feature extraction of the image; and performing garbage recognition and classification on the cells with the garbage. According to the invention, the garbage image is intelligently acquired by the unmanned aerial vehicle, so that the manpower is saved, and the workload of workers is reduced; the high-definition effective junk pictures are obtained by improving the interframe difference algorithm, and the definition of the images is further improved by improving the filtering algorithm; extracting and processing the garbage images in the images by a method of dividing grids and classifying, so that intelligent recognition of garbage is facilitated; the garbage is classified by combining a classifier, so that the garbage is convenient to recycle.
Description
Technical Field
The invention relates to an image processing technology, in particular to a junk data identification method based on an unmanned aerial vehicle and artificial intelligence.
Background
In the past, informatization technology is not common, and violation building management departments usually adopt a manual inspection means to manually find rubbish. In recent years, a method of remote monitoring using a camera has appeared to monitor everywhere, but this method has some disadvantages, such as dead monitoring angle and large investment of money. Although the methods can be used for collecting the garbage images, the garbage images also need to be accurately classified and diversified in collecting mode, when the number of the obtained images is large or the range of the images is large, huge workload can be generated through a manual identification mode, all tasks cannot be completed through simple intelligent identification, and meanwhile, the identification efficiency is relatively low. And at present, most of the identification of the garbage data only stays in the identification stage, and along with the strict control of the state on garbage classification, the garbage classification can not adapt to the requirements of people gradually.
Disclosure of Invention
The invention aims to solve the defects in the background technology by providing a junk data identification method based on an unmanned aerial vehicle and artificial intelligence.
The technical scheme adopted by the invention is as follows:
the junk data identification method based on the unmanned aerial vehicle and artificial intelligence comprises the following steps:
s1.1: collecting high-definition video image data with large data volume through unmanned aerial vehicle operation, and performing interframe difference processing on videos to obtain effective high-definition pictures;
s1.2: preprocessing the frame-extracted image to obtain a data set;
s1.3: the classifier determines whether garbage exists in the grids or not by carrying out grid division on the feature extraction of the image;
s1.4: and performing garbage recognition and classification on the cells with the garbage.
As a preferred technical scheme of the invention: the inter-frame difference processing image algorithm in S1.1 is as follows:
taking two continuous frames of images:
wherein:
wherein the content of the first and second substances,is a difference image between two successive frame images,andrespectively the gray values of the pixels of the two adjacent frames,the threshold value selected during the binarization of the differential image,the representation of the foreground is performed,representing the background, β is the suppression coefficient.
As a preferred technical scheme of the invention: and in the S1.2, after the difference image subjected to the inter-frame difference processing is obtained, preprocessing is carried out on the image, and the preprocessing step comprises the steps of carrying out color inversion, filtering processing and enhancement processing on the image.
As a preferred technical scheme of the invention: the filtering process establishes a rectangular coordinate system by taking the image starting point of the lower left corner of the differential image as an origin, and the pointTo make the image enclose the maximum point of the rectangle, we get:
wherein the content of the first and second substances,is a pointPixel mean in the whole image;is a pointPixel variance in the entire image.
As a preferred technical scheme of the invention: order toEnclosing a rectangular area in a coordinate system of the differential image; obtaining the coordinates of any point in the rectangular area(ii) a Calculating the current rectangular region inner pointMean and variance of (c):
obtaining:
wherein the content of the first and second substances,to the post-filtering pointThe gray value of (a).
As a preferred technical scheme of the invention: and (4) adding a multi-azimuth template operator through a canny edge extraction algorithm, and carrying out edge detection processing on the image.
As a preferred technical scheme of the invention: in S1.3, the preprocessed image is subjected to grid division based on image scale:
setting an original data set as M, the width as x and the height as y, wherein M belongs to M in a sub-graph of 8704;
the division number W of the original data set M is determined according to the following formula:
wherein the content of the first and second substances,a grid partitioning factor;the number of feature points in the graph.
As a preferred technical scheme of the invention: identifying the targets in the grids through the cascade classifier, setting P as a grid set with garbage, setting N as a grid set without garbage, setting the false detection rate as f, setting the detection rate as d, and setting the standard false detection rate as d(ii) a Initial value setting,;
when the temperature is higher than the set temperatureWhen the temperature of the water is higher than the set temperature,;
training a cascade classifier with n characteristics to obtain a setAnd collectionsAnd until the detection accuracy and the false detection rate of the target classifier are reached.
As a preferred technical scheme of the invention: for network aggregation with garbageAnd continuing to perform splitting and classification identification until each grid contains at most one garbage target.
As a preferred technical scheme of the invention: in the step S1.4, aiming at a network set with garbage, a recoverable garbage output is defined as a, a kitchen garbage output is defined as b, a harmful garbage output is defined as c, and other garbage outputs are defined as d; let the classification error be;
Defining the weight coefficient in each cell to satisfy:
Compared with the prior art, the garbage data identification method based on the unmanned aerial vehicle and the artificial intelligence has the beneficial effects that:
according to the invention, the garbage image is intelligently acquired by the unmanned aerial vehicle, so that the manpower is saved, and the workload of workers is reduced; the high-definition effective junk pictures are obtained by improving the inter-frame difference algorithm, and the definition of the pictures is further improved by improving the filtering algorithm; extracting and processing the garbage images in the images by a method of dividing grids and classifying, so that intelligent recognition of garbage is facilitated; the garbage is classified by combining a classifier, so that the garbage is convenient to recycle.
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FIG. 1 is a flow chart of a method of a preferred embodiment of the present invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other, and 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. 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.
Referring to fig. 1, a preferred embodiment of the present invention provides a junk data identification method based on an unmanned aerial vehicle and artificial intelligence, including the following steps:
s1.1: collecting high-definition video image data with large data volume through unmanned aerial vehicle operation, and performing interframe difference processing on videos to obtain effective high-definition pictures;
s1.2: preprocessing the frame-extracted image to obtain a data set;
s1.3: performing grid division by extracting the features of the image, and determining whether garbage exists in a grid by a classifier;
s1.4: and performing garbage recognition and classification on the cells with the garbage.
The inter-frame difference processing image algorithm in S1.1 is as follows:
taking two continuous frames of images:
wherein:
wherein the content of the first and second substances,is a difference image between two successive frame images,andrespectively pixels of two adjacent framesThe value of the gray-scale value,is a threshold value selected when the difference image is binarized,the representation of the foreground is performed,representing the background, β is the suppression coefficient.
And in the S1.2, after the difference image subjected to the inter-frame difference processing is obtained, preprocessing is carried out on the image, and the preprocessing step comprises the steps of carrying out color inversion, filtering processing and enhancement processing on the image.
The filtering process establishes a rectangular coordinate system by taking the image starting point of the lower left corner of the differential image as an origin, and the pointTo make the image enclose the maximum point of the rectangle, we get:
wherein the content of the first and second substances,is a pointPixel mean in the whole image;is a pointPixel variance in the entire image.
Order toEnclosing a rectangular area in a coordinate system of the differential image; obtaining the coordinates of any point in the rectangular area(ii) a Calculating the current rectangular region inner pointMean and variance of (c):
obtaining:
wherein, the first and the second end of the pipe are connected with each other,to the post-filtering pointThe gray value of (a).
And (4) adding a multi-azimuth template operator through a canny edge extraction algorithm, and carrying out edge detection processing on the image.
In S1.3, the preprocessed image is subjected to grid division based on image scale:
setting an original data set as M, the width as x, the height as y, wherein M belongs to M for 8704, and M belongs to M as a sub-graph;
the division number W of the original data set M is determined according to the following formula:
wherein the content of the first and second substances,a grid partitioning factor;the number of feature points in the graph.
Identifying the target in the grid through a cascade classifier, wherein P is a grid set with garbage, N is a grid set without garbage, the false detection rate is f, the detection rate is d, and the standard false detection rate is(ii) a Initial value setting,;
training a cascade classifier with n characteristics to obtain a setAnd collectionsAnd until the detection accuracy and the false detection rate of the target classifier are reached.
For network set with garbageAnd continuing to perform splitting and classification recognition until each grid contains at most one garbage target.
In the step S1.4, aiming at a network set with garbage, a recoverable garbage output is defined as a, a kitchen garbage output is defined as b, a harmful garbage output is defined as c, and other garbage outputs are defined as d; let the classification error be;
Defining the weight coefficient in each cell to satisfy:
In this embodiment, it is assumed that one frame image contains one piece of waste paper and one piece of fruit peel.
The unmanned aerial vehicle collects garbage video data of all places, and garbage image data in the video data are extracted according to an improved interframe difference processing algorithm: taking two consecutive images of the waste paper and a piece of peel:
wherein:
wherein the content of the first and second substances,is a difference image between two successive frame images,andrespectively the gray values of the pixels of the two adjacent frames,is a threshold value selected when the difference image is binarized,the representation of the foreground is performed,representing the background, β is the suppression coefficient.
And preprocessing the garbage image obtained by the difference, including color inversion, image filtering and image enhancement of the image. Wherein the color reversal mathematical expression is as follows:
the inverted pixel value is equal to 255 minus the current pixel value.
The filtering processing steps are as follows:
establishing a rectangular coordinate system by taking the image starting point of the lower left corner of the differential image as an origin, and calculating the pointTo make the image enclose the maximum point of the rectangle, we get:
wherein the content of the first and second substances,is a pointPixel mean in the entire image;is a pointPixel variance in the entire image.
Order toEnclosing a rectangular area in a coordinate system of the differential image; obtaining the coordinates of any point in the rectangular area(ii) a Calculating the current rectangular region inner pointMean and variance of (c):
obtaining:
wherein the content of the first and second substances,to the post-filtering pointThe gray value of (a).
And (4) adding a multi-azimuth template operator through a canny edge extraction algorithm, and carrying out edge detection processing on the image.
Extracting the features of the preprocessed image, carrying out grid division according to the extracted features, and dividing the complete image according to the following steps:
setting an original data set as M, the width as x, the height as y, wherein M belongs to M for 8704, and M belongs to M as a sub-graph;
the number W of the division lattices of the original data set M is determined according to the following formula:
wherein, the first and the second end of the pipe are connected with each other,a grid partitioning factor;the number of feature points in the graph.
Divide the image into four grids of the same size, respectively the grid at the upper left cornerGrid at the upper right cornerGrid at lower left cornerGrid at lower right corner。
Grid with waste paper and peel at right lower cornerIn the waste paper in the gridIn the upper left corner, the peel is in the gridThe upper right corner.
Confirming whether a garbage target exists in the divided grids through a cascade classifier:
identifying the targets in the grids through a cascade classifier, setting P as a grid set with garbage, N as a grid set without garbage, and setting the false detection rate as f, the detection rate as d and the standard false detection rate as d(ii) a Initial value setting,;
training a cascade classifier with n characteristics to obtain a setAnd collectionsAnd until the detection accuracy and the false detection rate of the target classifier are reached.
For network set with garbageAnd continuing to perform splitting and classification identification until each grid contains at most one garbage target.
To pairContinuously dividing to obtain the upper left corners of four grids with the same sizeThe upper right cornerLower left cornerThe lower right corner。
Aiming at a network set with garbage, defining recoverable garbage output as a, kitchen garbage output as b, harmful garbage output as c and other garbage output as d; let the classification error be;
Defining the weight coefficient in each cell to satisfy:
For netsGrid (C)、And the classifier respectively outputs a and b to finish the identification of the garbage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. A junk data identification method based on an unmanned aerial vehicle and artificial intelligence is characterized in that: the method comprises the following steps:
s1.1: collecting high-definition video image data with large data volume through unmanned aerial vehicle operation, and performing interframe difference processing on videos to obtain effective high-definition pictures;
s1.2: preprocessing the frame-extracted image to obtain a data set;
s1.3: performing grid division by extracting the features of the image, and determining whether garbage exists in a grid by a classifier;
s1.4: and performing garbage recognition and classification on the cells with the garbage.
2. The spam data recognition method based on unmanned aerial vehicle and artificial intelligence according to claim 1, wherein: the inter-frame difference processing image algorithm in S1.1 is as follows:
taking two continuous frames of images:
wherein:
wherein the content of the first and second substances,is a differential image between two successive frame images,andthe gray values of the pixels of the two adjacent frames are respectively, T is a threshold value selected during the binarization of the differential image,the representation of the foreground is performed,representing the background, β is the suppression coefficient.
3. The junk data recognition method based on unmanned aerial vehicle and artificial intelligence of claim 1, wherein: and in the S1.2, after the difference image subjected to the inter-frame difference processing is obtained, preprocessing is carried out on the image, and the preprocessing step comprises the steps of carrying out color inversion, filtering processing and enhancement processing on the image.
4. The spam data recognition method based on unmanned aerial vehicle and artificial intelligence according to claim 3, wherein: the filtering process establishes a rectangular coordinate system by taking the image starting point of the lower left corner of the differential image as an origin, and the pointTo make the image enclose the largest point of the rectangle, we get:
5. The junk data recognition method based on unmanned aerial vehicle and artificial intelligence of claim 4, wherein: order toEnclosing a rectangular area in a coordinate system of the differential image; obtaining the coordinates of any point in the rectangular area(ii) a Calculating the current rectangular region inner pointMean and variance of (c):
obtaining:
6. The spam data recognition method based on unmanned aerial vehicle and artificial intelligence according to claim 1, wherein: and (4) adding a multi-azimuth template operator through a canny edge extraction algorithm, and carrying out edge detection processing on the image.
7. The junk data recognition method based on unmanned aerial vehicle and artificial intelligence of claim 1, wherein: in S1.3, the preprocessed image is subjected to grid division based on image scale:
setting an original data set as M, the width as x and the height as y, wherein M belongs to M in a sub-graph of 8704;
the number W of the division lattices of the original data set M is determined according to the following formula:
8. The spam data recognition method based on unmanned aerial vehicle and artificial intelligence of claim 7, wherein: identifying the target in the grid through a cascade classifier, wherein P is a grid set with garbage, N is a grid set without garbage, the false detection rate is f, the detection rate is d, and the standard false detection rate is(ii) a Initial value setting,;
10. The junk data recognition method based on unmanned aerial vehicle and artificial intelligence of claim 1, wherein: in the step S1.4, aiming at a network set with garbage, a recoverable garbage output is defined as a, a kitchen garbage output is defined as b, a harmful garbage output is defined as c, and other garbage outputs are defined as d; let the classification error be;
Defining the weight coefficient in each cell to satisfy:
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