CN106469300B - A kind of color spot detection recognition method - Google Patents

A kind of color spot detection recognition method Download PDF

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Publication number
CN106469300B
CN106469300B CN201610798036.8A CN201610798036A CN106469300B CN 106469300 B CN106469300 B CN 106469300B CN 201610798036 A CN201610798036 A CN 201610798036A CN 106469300 B CN106469300 B CN 106469300B
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color
color spot
average
spot
information
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CN106469300A (en
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关蕾
李习华
万涛
赖维
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Guangzhou Laide Pu Detection Technology Co Ltd
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Guangzhou Laide Pu Detection Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16Human faces, e.g. facial parts, sketches or expressions
    • G06V40/168Feature extraction; Face representation
    • G06V40/171Local features and components; Facial parts ; Occluding parts, e.g. glasses; Geometrical relationships
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16Human faces, e.g. facial parts, sketches or expressions
    • G06V40/172Classification, e.g. identification

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Analysis (AREA)

Abstract

The present invention provides a kind of color spot detection recognition method, gathers face picture, and face picture includes the mutation picture of all color spot species and color spot;And color spot region and color spot species are marked in advance, by being read out and being iterated to the feature vector one and markup information of each color spot until obtaining the color characteristic average and Wavelet Transform Feature average of each color spot, the feature vector two and markup information of each color spot are read out and are iterated until obtaining color average, texture average and the blob features average of each color spot, its iterative process uses SVM;The color spot information in face picture to be detected is finally read, carries out matching acquisition color spot region with the color characteristic average and Wavelet Transform Feature average;Match cognization color spot species is carried out with color average, texture average and blob features average;Export the color spot region obtained and color spot kind of information.Color spot detection recognition method provided by the invention has good migration, and precision is high.

Description

A kind of color spot detection recognition method
Technical field
The present invention relates to beautifying medical field, particularly relates to a kind of color spot detection recognition method.
Background technology
The technology that traditional color spot detection and recognition methods are split or strengthened using image more obtains, and binding rule carries out color Spot detects, and in terms of identification, obtains the species of color spot using template matches either neighborhood matching more.Above method requires image There is good severability, but in reality scene, due to the influence of many factors such as capture apparatus, illumination, to image into acting charitably Segmentation it is relatively difficult, cause color spot detection and identification error it is larger;Simultaneously as partitioning algorithm needs manually to carry out parameter tune It is whole, and parameter majority is manually adjusted by being carried out on a certain number of sampled images, it is impossible to reflect the distribution of image entirety, institute It is poor with the transportable property of partitioning algorithm.
The content of the invention
The present invention proposes that one kind has good migration, and the color spot detection recognition method that precision is high.
The technical proposal of the invention is realized in this way:
A kind of color spot detection recognition method, comprises the following steps:
Step 1:N face pictures, wherein N >=1000 are gathered, face picture includes the change of all color spot species and color spot Kind picture;
Step 2:Color spot region and color spot are marked according to mode set in advance to the color spot in each face picture Species, sets the information as markup information and is preserved;
Step 3:According to the color spot detection model of pixel, the color characteristic and Wavelet Transform Feature of color spot are extracted, is set The information is preserved in the lump for feature vector;
Step 4:The feature vector one and markup information of each color spot are read out and are iterated until obtaining each The color characteristic average and Wavelet Transform Feature average of kind color spot are simultaneously preserved, its iterative process uses SVM (supporting vectors Machine);
Step 5:Each color spot point centered on its center, and to surround the minimum rectangle of color spot extraction color spot picture, The unified deformation (warping) of these pictures is arrived to the square of same size;Color spot figure after extraction deformation (warping) Color, texture and blob features in piece simultaneously set the category information as feature vector two;
Step 6:The feature vector two and markup information of each color spot are read out and are iterated until obtaining each Color average, texture average and the blob features average of kind color spot are simultaneously preserved, its iterative process uses SVM (supporting vectors Machine);
Step 7:The color spot information in face picture to be detected is read, morphologic denoising, bonding are carried out to it, is put down With the color characteristic average and Wavelet Transform Feature average match after sliding processing and obtain color spot region;It is again that this is to be detected Color spot information and color average, texture average and blob features average carry out match cognization color spot species;Export the color obtained Spot region and color spot kind of information.
A kind of color spot detection recognition method provided by the invention, face picture database i.e. color is established by step 1 and two Spot database, by step 3 and one information of feature vector in four analysis color spot databases, obtains color spot regional model, passes through Step 5 and two information of feature vector in step 6 analysis color spot database, obtain color spot kind class model, then according to region The face picture that model and color spot kind class model treat detection is identified, so as to complete high-precision detection and identification, The present invention by training pattern by applying to color spot detection field, while by the very effective color of computer vision field, line The parameter that the features such as reason, small echo are considered as identification, so as to improve the precision of identification;And this method can also be further Apply to color spot latent structure and combinations of features direction, therefore there is good migration.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow chart of color spot detection recognition method of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, a kind of color spot detection recognition method, comprises the following steps:
Step 1:N face pictures, wherein N >=1000 are gathered, face picture includes the change of all color spot species and color spot Kind picture;Bigger in the numerical value of the various N of this step, species is then more complete, and can be the essence that follow-up execution step lifts higher Degree.
Step 2:Color spot region and color spot are marked according to mode set in advance to the color spot in each face picture Species, sets the information as markup information and is preserved;This step can preset different notation methods.Its notation methods Need to meet:1st, labeled standards must be unified;2nd, need mark two information, one be color spot region, by irregular Curve marks, the other is the color spot species in the corresponding color spot region of mark.Annotation results, which preserve, is divided into two parts, color spot area Domain directly marked out on the diagram come, color spot species and corresponding picture name in excel with cognizable colour curve or Preserve and correspond in person's txt texts.
Step 3:According to the color spot detection model of pixel, the color characteristic and Wavelet Transform Feature of color spot are extracted, is set The information is preserved in the lump for feature vector;The color spot detection model based on pixel is judged in this step, that is, is sentenced Whether some disconnected pixel belongs to color spot region, and judges whether a pixel belongs to color spot region, and the face of itself The color and vein information of color information, texture information and peripheral cell domain is all related.Therefore extraction color spot and its peripheral cell The color characteristic and Wavelet Transform Feature in domain.
Step 4:The feature vector one and markup information of each color spot are read out and are iterated until obtaining each The color characteristic average and Wavelet Transform Feature average of kind color spot are simultaneously preserved, its iterative process uses SVM (supporting vectors Machine);This step also referred to as uses SVM (support vector machines) train classification models, each color spot it includes many kinds of parameters, its Parameter is constantly adjusted during iteration, final to obtain color characteristic average and Wavelet Transform Feature average;The color Characteristic mean and Wavelet Transform Feature average are the optimum value close to the actual parameter of corresponding color spot, and it is a region model Enclose value.
Step 5:Each color spot point centered on its center, and to surround the minimum rectangle of color spot extraction color spot picture, The unified deformation (warping) of these pictures is arrived to the square of same size;Color spot figure after extraction deformation (warping) Color, texture and blob features in piece simultaneously set the category information as feature vector two;Color spot center is external for its in this step The center of rectangle.And use minimum rectangle extraction color spot picture be due to it includes color spot Information Meter it is the most accurate.
Step 6:The feature vector two and markup information of each color spot are read out and are iterated until obtaining each Color average, texture average and the blob features average of kind color spot are simultaneously preserved, its iterative process uses SVM;With step 4 Principle is similar, which also also referred to as uses SVM (support vector machines) train classification models, but its parameter is different, it reads Numerical value be the numerical value of the color spot picture after deformation (warping), the color average of the color spot of acquisition, texture average and spot are special It is also the optimum value close to the actual parameter of corresponding color spot to levy average, and it is a regional extent value.
Step 7:The color spot information in face picture to be detected is read, morphologic denoising, bonding are carried out to it, is put down With the color characteristic average and Wavelet Transform Feature average match after sliding processing and obtain color spot region;It is again that this is to be detected Color spot information and color average, texture average and blob features average carry out match cognization color spot species;Export the color obtained Spot region and color spot kind of information.Wherein carry out morphologic denoising, bonding, smoothing processing are a kind of basic operation hand in this area Section, this step can realize the automatic process detected with identification, and by the very effective color of computer vision field, texture, small The parameter that the features such as ripple are considered as identification, so as to improve the precision of identification.
Preferably, all color spot species can be divided into active spot, qualitative spot according to property;It can also be included according to classification common Freckle, blackspot, chloasma etc.;And if when there is new spot kind, can also be increased by way of repeat step one to seven The characteristic information of the spot kind, so as to fulfill the function of detecting and identify.
Preferably, when performing step 2, mode set in advance is that different face is preset according to different color spots Color is classified with numbering.Its certain not limited to this mode classification, it can also classify according only to the mode of numbering,
A kind of color spot detection recognition method provided by the invention, face picture database i.e. color is established by step 1 and two Spot database, its process can be preset, and are labeled operation by professional person and then be can further improve precision, be led to Step 3 and one information of feature vector in four analysis color spot databases are crossed, obtains color spot regional model, this process can basis Need appropriate increase number;Two information of feature vector in color spot database is analyzed by step 5 and step 6, obtains color Spot kind class model, this process can also appropriate increase numbers as needed;Then according to regional model and color spot kind class model Face picture to be detected is identified, so as to complete it is high-precision detection and identification, the present invention by will training mould Type applies to color spot detection field, while using features such as the very effective color of computer vision field, texture, small echos as knowledge The parameter do not considered, so as to improve the precision of identification;And this method can also further apply to color spot feature structure Make with combinations of features direction, therefore there is good migration, and the present invention has extremely strong applicability in beautifying medical field; So as to greatly improve the efficiency of doctor, and the precision judged, and the database for establishing by this mode bigger provides Source, more science, break away from traditional subjective experience for only leaning on experience and domain knowledge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.

Claims (2)

1. a kind of color spot detection recognition method, it is characterised in that comprise the following steps:
Step 1:N face pictures, wherein N >=1000 are gathered, face picture includes the mutation figure of all color spot species and color spot Piece;
Step 2:Color spot region and color spot kind are marked according to mode set in advance to the color spot in each face picture Class, sets the information as markup information and is preserved;
Step 3:According to the color spot detection model of pixel, the color characteristic and Wavelet Transform Feature of color spot are extracted, sets the letter Cease and preserved in the lump for feature vector;
Step 4:The feature vector one and markup information of each color spot are read out and are iterated until obtaining each color The color characteristic average and Wavelet Transform Feature average of spot are simultaneously preserved, its iterative process uses SVM;
Step 5:Each color spot point centered on its center, and to surround the minimum rectangle of color spot extraction color spot picture, by this A little pictures are uniformly deformed to the square of same size;Extract color, texture and the spot in deformed color spot picture Feature simultaneously sets the category information as feature vector two;
Step 6:The feature vector two and markup information of each color spot are read out and are iterated until obtaining each color Color average, texture average and the blob features average of spot are simultaneously preserved, its iterative process uses SVM;
Step 7:The color spot information in face picture to be detected is read, morphologic denoising, bonding, smooth place are carried out to it With the color characteristic average and Wavelet Transform Feature average match after reason and obtain color spot region;Again by the color to be detected Spot information carries out match cognization color spot species with color average, texture average and blob features average;Export the color spot area obtained Domain and color spot kind of information.
2. a kind of color spot detection recognition method as claimed in claim 1, it is characterised in that when performing step 2, set in advance Fixed mode is classified to preset different colors according to different color spots with numbering.
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CN109299634A (en) * 2017-07-25 2019-02-01 上海中科顶信医学影像科技有限公司 Spot detection method, system, equipment and storage medium
CN108780497B (en) * 2017-11-14 2021-10-26 深圳和而泰智能控制股份有限公司 Skin flaw point classification method and electronic equipment
CN108846311A (en) * 2018-04-28 2018-11-20 北京羽医甘蓝信息技术有限公司 The method and device of the facial pieces of skin shape defect of detection based on deep learning
CN109529202B (en) * 2018-12-29 2023-04-07 佛山科学技术学院 Laser speckle removing system and method
CN111429416B (en) * 2020-03-19 2023-10-13 深圳数联天下智能科技有限公司 Facial pigment spot recognition method and device and electronic equipment

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