CN110532599B - Heart beach sand body parameter quantitative characterization method - Google Patents

Heart beach sand body parameter quantitative characterization method Download PDF

Info

Publication number
CN110532599B
CN110532599B CN201910648474.XA CN201910648474A CN110532599B CN 110532599 B CN110532599 B CN 110532599B CN 201910648474 A CN201910648474 A CN 201910648474A CN 110532599 B CN110532599 B CN 110532599B
Authority
CN
China
Prior art keywords
axis
sand body
point
beach sand
detected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910648474.XA
Other languages
Chinese (zh)
Other versions
CN110532599A (en
Inventor
李鹏
范倩倩
马志欣
于占海
杨辉
刘鹏程
肖峰
尹涛
郑腊年
霍明会
岳君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
Original Assignee
Petrochina Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN201910648474.XA priority Critical patent/CN110532599B/en
Publication of CN110532599A publication Critical patent/CN110532599A/en
Application granted granted Critical
Publication of CN110532599B publication Critical patent/CN110532599B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/20—Drawing from basic elements, e.g. lines or circles
    • G06T11/203—Drawing of straight lines or curves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The invention discloses a heart beach sand body parameter quantitative characterization method, which describes the scale and direction of a heart beach sand body to be tested firstly, and then describes the shape information of the heart beach sand body to be tested through dimensionless quantity parameters.

Description

Heart beach sand body parameter quantitative characterization method
Technical Field
The invention belongs to the technical field of braided river sediment quantitative characterization, and particularly relates to a method for quantitatively characterizing cardiac beach sand body parameters.
Background
At present, at home and abroad, the method for characterizing the planar morphology of the braided sand body of the heart beach is divided into two types, one type is qualitative expression: for example, "the plane of the sand body of the cardiac beach is spindle-shaped, and the section is flat at the bottom and convex at the top"; another is quantitative characterization directly using numbers: for example, "average thickness of sand body of cardiac beach is 3m, average length is 700m, and average width is 250 m". Both of these methods have different degrees of disadvantages, mainly manifested in:
(1) the qualitative characterization method comprises the following steps: although the method can vividly express the plane morphology of the sand body of the cardiac beach, the method lacks the concept of absolute quantity, the morphology of the sand body of the cardiac beach is the same, and the absolute scale can be as small as several meters or as large as thousands of meters; secondly, the presentation of the sand body form of the cardiac beach is too wide, the sand body form of the cardiac beach cannot be accurately depicted, for example, the plane form is in a spindle shape, the spindle shape can be a fat spindle shape with a smaller ratio of a long axis to a short axis, or a thin spindle shape with a larger ratio of the long axis to the short axis, and the plane form cannot be accurately described only by the spindle shape; most importantly, in modern braided river observation, the sand body shape of the cardiac beach is often varied and cannot be described simply by a spindle shape (or some other simple geometric shape).
(2) The quantitative characterization method comprises the following steps: the quantitative characterization can be used for describing the scale (length, width and thickness) of the sand body by using a digital quantitative description, and gives an intuitive impression, but the expression mode is too single to reflect the change of the sand body in the length direction and the width direction, for example, the width (or the length) of the sand body is changed in a certain direction and is not a unique value.
Although the two methods can be combined with each other in a general situation, and can describe the external form of the sand body and also give quantitative data, the boundary characteristics of the sand body cannot be accurately described, so that it is necessary to develop a method for quantitatively characterizing parameters of sand bodies in the cardiac beach.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a quantitative characterization method of cardiac beach sand body parameters, and overcomes the defects of the prior art that 1: the qualitative characterization method lacks the concept of absolute quantity, the expression is too wide, and the sand body form of the cardiac beach cannot be accurately depicted; 2: the quantitative characterization method has too single expression mode and cannot reflect the changes of the sand body in the length direction and the width direction; 3: the boundary characteristics of the sand body can not be accurately described by combining the existing qualitative characterization method and the existing quantitative characterization method.
In order to solve the technical problem, the technical scheme of the invention is as follows: a quantitative characterization method for cardiac beach sand body parameters comprises the following steps:
step 1) determining a coordinate system of a to-be-detected cardiac beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected cardiac beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected cardiac beach sand body and two ends of the Y axis are respectively a point A and a point B, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Preferably, the step 2) is to make a circle with the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be measured can be described.
Preferably, the radius R of the polar coordinate in the step 3) is equal to that of the radius R of the polar coordinate in the step 2)General assemblyMaking dimensionless quantity of a ratio, wherein r is 0-1, the angle alpha in the polar coordinates is 0 degrees in the positive direction of the Y axis, positive clockwise and negative anticlockwise, wherein alpha is-180 degrees, starting from the point A, and the left inflection point coordinates are (alpha)Left 1，rLeft 1)、(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m) The coordinates of inflection points on the right side are respectively (alpha)Right 1，rRight 1)、(αRight 2，rRight 2)、…、(αRight n，rRight n)。
Preferably, h in the step 4) is the same as R in the step 2)General assemblyMaking dimensionless quantity of ratio, wherein h is 0-1, starting from the point A, the left side h is hLeft 1、hLeft 2、…、hLeft m +1On the right side h is hRight 1、hRight 2、…、hRight n +1When h is a positive value, the outline of the cardiac beach sand body to be detected is convex, and when h is a negative value, the outline of the cardiac beach sand body to be detected is concave.
Preferably, said step 6) integrates (α)General assembly，RGeneral assembly)((0°，1)，(αLeft 1，rLeft 1)，(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m)，(-180°，1)|hLeft 1，hLeft 2、…、hLeft m +1)((0°，1)，(αRight 1，rRight 1)，(αRight 2，rRight 2)、…、(αRight n，rRight n)，(180°，1)|hRight 1，hRight 2、…、hRight n +1) The contour line of the cardiac beach sand body to be detected can be represented quantitatively through parameters.
Compared with the prior art, the invention has the advantages that:
(1) the heart beach sand body parameter quantitative characterization method can describe the scale and the direction of a heart beach sand body to be tested firstly, and then describe the shape information of the heart beach sand body to be tested through dimensionless quantity parameters, the method can perform cluster analysis on the scales and the shapes of different heart beach sand bodies respectively, the visual sense of describing the form of the heart beach sand body by a parameter system is improved, the plane form of the heart beach sand body can be accurately characterized through parameter quantification, the characterization result is more accurate and is closer to the form of the natural heart beach sand body, the non-standardization of simple description by terms such as spindle shape and the like is avoided, and meanwhile, the heart beach sand bodies with different forms are described by simply depending on the equivalent standards of length and width;
(2) the heart beach sand body determined by the heart beach sand body parameter quantitative representation method can form a unique set of parameters for description, and simultaneously, the set of parameters can uniquely describe the form of one heart beach sand body and have unique correspondence, namely, the change from graphic storage to parametric storage of the heart beach sand body is completed, the planar form of the heart beach sand body is represented by the parameter quantitative representation, the simulation can be carried out by a computer, a set of standard format parameters are input, and the form of the heart beach sand body can be rapidly drawn by the computer, so that the inaccurate result caused by purely depending on character description and the result of accurate description which can be achieved by depending on a pure tracing are avoided, and the efficiency of simulating the image of the heart beach sand body is higher;
(3) the method for quantitatively characterizing the parameters of the heart beach sand body has the advantages of simple steps, convenient operation and high practicability, can be widely applied to characterization of any heart beach sand body in the nature, has wider application range and more accurate characterization result, and is closer to the shape of the heart beach sand body in the nature.
Drawings
FIG. 1 is a schematic diagram illustrating a method for quantitatively characterizing sand body parameters of a cardiac beach in accordance with an embodiment of the present invention;
fig. 2 is a schematic drawing of the method for quantitatively characterizing the sand body parameters of the cardiac beach in the embodiment 7 of the invention.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other embodiments disclosed herein are illustrative only and are not intended to limit the scope of the invention, which is defined by the claims, since the scope of the invention is not limited by the specific structures, proportions, and dimensions, or otherwise, unless otherwise specified, since various modifications, changes in the proportions and variations thereof, can be made by those skilled in the art without departing from the spirit and scope of the invention.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Example 2
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Example 3
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral (1)；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Preferably, the step 2) is to make a circle with the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be measured can be described.
Example 4
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Preferably, the step 2) is to make a circle with the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be measured can be described.
Preferably, the radius R of the polar coordinate in the step 3) is equal to that of the radius R of the polar coordinate in the step 2)General assemblyMaking dimensionless quantity of a ratio, wherein r is 0-1, the angle alpha in the polar coordinates is 0 degrees in the positive direction of the Y axis, positive clockwise and negative anticlockwise, wherein alpha is-180 degrees, starting from the point A, and the left inflection point coordinates are (alpha)Left 1，rLeft 1)、(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m) The coordinates of inflection points on the right side are respectively (alpha)Right 1，rRight 1)、(αRight 2，rRight 2)、…、(αRight n，rRight n)。
Example 5
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Preferably, the step 2) is to make a circle with the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be measured can be described.
Preferably, the radius R of the polar coordinate in the step 3) is equal to that of the radius R in the step 2)General assemblyMaking dimensionless quantity of a ratio, wherein r is 0-1, the angle alpha in the polar coordinate is 0 degrees in the positive direction of the Y axis, positive clockwise and negative anticlockwise, wherein alpha is-180 degrees, starting from the point A, and the angle alpha is measured in the positive direction of the Y axis, positive clockwise and negative anticlockwiseLeft inflection point coordinates are respectively (alpha)Left 1，rLeft 1)、(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m) The coordinates of inflection points on the right side are respectively (alpha)Right 1，rRight 1)、(αRight 2，rRight 2)、…、(αRight n，rRight n)。
Preferably, h in the step 4) is the same as R in the step 2)General assemblyMaking dimensionless quantity of ratio, wherein h is 0-1, starting from the point A, the left side h is hLeft 1、hLeft 2、…、hLeft m +1On the right side h is hRight 1、hRight 2、…、hRight n +1When h is a positive value, the outline of the cardiac beach sand body to be detected is convex, and when h is a negative value, the outline of the cardiac beach sand body to be detected is concave.
Example 6
The invention discloses a method for quantitatively characterizing cardiac beach sand body parameters, which comprises the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral (1)；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
Preferably, in the step 1), the long axis direction of the cardiac beach sand body to be measured is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point a and the point B is taken as the X axis of the coordinate system, and the clockwise 90 ° direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
Preferably, the step 2) is to make a circle with the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be tested can be described.
Preferably, the radius R of the polar coordinate in the step 3) is equal to that of the radius R of the polar coordinate in the step 2)General assemblyMaking dimensionless quantity of a ratio, wherein r is 0-1, the angle alpha in the polar coordinates is 0 degrees in the positive direction of the Y axis, positive clockwise and negative anticlockwise, wherein alpha is-180 degrees, starting from the point A, and the left inflection point coordinates are (alpha)Left 1，rLeft 1)、(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m) The coordinates of inflection points on the right side are respectively (alpha)Right 1，rRight 1)、(αRight 2，rRight 2)、…、(αRight n，rRight n)。
Preferably, h in the step 4) is the same as R in the step 2)General assemblyMaking dimensionless quantity of ratio, wherein h is 0-1, starting from the point A, the left side h is hLeft 1、hLeft 2、…、hLeft m +1On the right side h is hRight 1、hRight 2、…、hRight n +1When h is a positive value, the outline of the cardiac beach sand body to be detected is convex, and when h is a negative value, the outline of the cardiac beach sand body to be detected is concave.
Preferably, said step 6) integrates (α)General assembly，RGeneral assembly)((0°，1)，(αLeft 1，rLeft 1)，(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m)，(-180°，1)|hLeft 1，hLeft 2、…、hLeft m +1)((0°，1)，(αRight 1，rRight 1)，(αRight 2，rRight 2)、…、(αRight n，rRight n)，(180°，1)|hRight 1，hRight 2、…、hRight n +1) And then, the contour line of the cardiac beach sand body to be detected can be quantitatively represented through parameters.
Example 7
As shown in fig. 1, any cardiac beach sand body to be described is selected.
Step 1) determining a long axis of the heart beach sand body, determining points A and B of corresponding end points, taking the direction of the long axis of the heart beach sand body to be detected as a Y axis of a coordinate system, and defining the north-offset direction as the positive direction of the Y axis, wherein a perpendicular bisector of a line segment AB between the points A and B is taken as an X axis of the coordinate system, and the clockwise 90-degree direction of the positive direction of the Y axis is taken as the positive direction of the X axis;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as the diameter to make a circle, wherein the radius R of the circleGeneral (1)Is 610m, wherein the Y axis forms an angle alpha with the true north directionGeneral assemblyIs 11.7 DEG, wherein RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, alphaGeneral assemblyThe direction of the cardiac beach sand body to be detected can be described;
step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour lines of the two parts, and expressing the inflection point coordinates by dimensionless polar coordinates, wherein the left contour line has no inflection point, and the right contour line has inflection point coordinates (alpha)Right 1，rRight 1)，(αRight 2，rRight 2) Is (144.6 °,0.4), (175.3 °,0.83), the polar coordinates of point a (0 °,1), the polar coordinates of point B (± 180 °, 1);
step 4) connecting adjacent inflection points and A, B points to determine corresponding h, wherein hLeft 1Is 0.31, hRight 1Is 0.17, hRight 2Is-0.04，hRight 3Is 0.02;
and 5) integrating data (11.7 degrees, 610) ((0 degrees, 1) (-180 degrees, 1) |0.31) ((0 degrees, 1), (144.6 degrees, 0.4), (175.3 degrees, 0.83), (180 degrees, 1) |0.17, -0.04,0.02), and quantitatively representing the contour line of the sand body of the heart beach to be detected through parameters.
As shown in fig. 2, the same configuration of the sand body of the selected sand body of the cardiac beach can be drawn by inputting the above data (11.7 °,610) ((0 °,1) (-180 °,1) |0.31) ((0 °,1), (144.6 °,0.4), (175.3 °,0.83), (180 °,1) |0.17, -0.04,0.02) by the drawing software.
The principle of the invention is as follows:
the invention describes the contour line of the sand body of the cardiac beach through the arc shape, because the three points can determine the principle of a section of only arc, therefore, the outline of the sand body can be uniquely described by using the adjacent inflection points (point A and point B) and the corresponding h, the scale and the direction of the cardiac beach sand body to be detected are described first, then the shape information of the cardiac beach sand body to be detected is described through dimensionless quantity parameters, the method can perform cluster analysis on different cardiac beach sand body scales and shapes respectively, improves the visual sense of describing the cardiac beach sand body forms by the parameter system, can accurately represent the plane form of the sand body of the cardiac beach through parameter quantification, has more accurate representation result, is closer to the form of the sand body of the cardiac beach in the nature, avoids the non-normative property which is simply described by terms such as spindle shape and the like, meanwhile, the method avoids simply depending on the equivalent standard of length and width to describe the cardiac beach sand bodies with different shapes.
The heart beach sand body determined by the heart beach sand body parameter quantitative representation method can form a unique set of parameters for description, and simultaneously, the set of parameters can uniquely describe the form of one heart beach sand body and have unique correspondence, namely, the change from graphic storage to parametric storage of the heart beach sand body is completed, the planar form of the heart beach sand body is represented quantitatively by the parameters, simulation can be performed by a computer, a set of standard format parameters are input, and the form of the heart beach sand body can be rapidly drawn by the computer, so that inaccurate results caused by purely depending on character description and results of accurate description which can be achieved by depending on pure tracing are avoided, and the efficiency of simulating the image of the heart beach sand body is higher.
The method for quantitatively characterizing the parameters of the heart beach sand body has the advantages of simple steps, convenient operation and high practicability, can be widely applied to characterization of any heart beach sand body in the nature, has wider application range and more accurate characterization result, and is closer to the shape of the heart beach sand body in the nature.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims (6)

1. A quantitative characterization method for cardiac beach sand body parameters is characterized by comprising the following steps:
step 1) determining a coordinate system of a to-be-detected heart beach sand body, wherein the coordinate system comprises an X axis and a Y axis, the long axis direction of the to-be-detected heart beach sand body is taken as the Y axis of the coordinate system, intersection points of the long axis direction of the to-be-detected heart beach sand body and two ends of the Y axis are respectively an A point and a B point, the X axis is vertical to the Y axis, and the intersection point of the X axis and the Y axis is an origin point;
step 2) taking the origin in the step 1) as the center of a circle and taking a line segment AB between the points A and B as a diameter to make a circle, wherein the radius of the circle is RGeneral assemblyWherein the included angle between the Y axis and the due north direction is alphaGeneral assembly；
Step 3) dividing the contour line of the cardiac beach sand body to be detected into a left part and a right part by using the point A and the point B, respectively marking inflection point coordinates of the contour line of the two parts, namely a left inflection point coordinate and a right inflection point coordinate, and marking the left inflection point coordinate and the right inflection point coordinate in a polar coordinate mode;
step 4) connecting adjacent inflection points, wherein the point A and the point B are also inflection points, and making a perpendicular bisector of each connecting line segment, wherein the distance between the intersection point of the perpendicular bisector and the contour line of the to-be-detected beach sand body and the midpoint of the connecting line segment is h;
step 5) repeating the step 4) to determine all the adjacent two inflection points and the corresponding h of the heart beach sand body to be detected, wherein the adjacent inflection points and the corresponding h can only describe the contour line of a section of the heart beach sand body to be detected;
step 6) comprehensive radius RGeneral assemblyAngle alphaGeneral assemblyAnd inflection point coordinates and h, namely, the contour line of the heart beach sand body to be detected can be quantitatively represented through parameters.
2. The method of claim 1, wherein the method comprises the following steps: in the step 1), the long axis direction of the cardiac beach sand body to be detected is taken as the Y axis of the coordinate system, the north-offset direction is defined as the positive direction of the Y axis, wherein the perpendicular bisector of the line segment AB between the point A and the point B is taken as the X axis of the coordinate system, and the clockwise 90-degree direction of the positive direction of the Y axis is taken as the positive direction of the X axis.
3. The method of claim 1, wherein the method comprises the following steps: the step 2) is to make a circle by taking the line segment AB as the diameter, wherein the radius of the circle is RGeneral assemblyCan describe the scale of the sand body of the cardiac beach to be measured, and the included angle between the Y axis and the due north direction is alphaGeneral assemblyThe direction of the cardiac beach sand to be measured can be described.
4. The method of claim 1, wherein the method comprises the following steps: the radius R of the polar coordinate in the step 3) is equal to that of the radius R of the polar coordinate in the step 2)General assemblyMaking dimensionless quantity of a ratio, wherein r is 0-1, the angle alpha in the polar coordinates is 0 degrees in the positive direction of the Y axis, positive clockwise and negative anticlockwise, wherein alpha is-180 degrees, starting from the point A, and the left inflection point coordinates are (alpha)Left 1，rLeft 1)、(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m) The coordinates of inflection points on the right side are respectively (alpha)Right 1，rRight 1)、(αRight 2，rRight 2)、…、(αRight n，rRight n)。
5. The method of claim 4, wherein the method comprises the steps of: h in the step 4) is the same as R in the step 2)General assemblyMaking dimensionless quantity of ratio, wherein h is 0-1, starting from the point A, h is on the left sideLeft 1、hLeft 2、…、hLeft m +1On the right side h is hRight 1、hRight 2、…、hRight n +1。
6. The method of claim 5, wherein the method comprises the following steps: said step 6) of synthesizing (. alpha.)General assembly，RGeneral assembly)((0°，1)，(αLeft 1，rLeft 1)，(αLeft 2，rLeft 2)、…、(αLeft m，rLeft m)，(-180°，1)|hLeft 1，hLeft 2、…、hLeft m +1)((0°，1)，(αRight 1，rRight 1)，(αRight 2，rRight 2)、…、(αRight n，rRight n)，(180°，1)|hRight 1，hRight 2、…、hRight n +1) And then, the contour line of the cardiac beach sand body to be detected can be quantitatively represented through parameters.
CN201910648474.XA 2019-07-18 2019-07-18 Heart beach sand body parameter quantitative characterization method Active CN110532599B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910648474.XA CN110532599B (en) 2019-07-18 2019-07-18 Heart beach sand body parameter quantitative characterization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910648474.XA CN110532599B (en) 2019-07-18 2019-07-18 Heart beach sand body parameter quantitative characterization method

Publications (2)

Publication Number Publication Date
CN110532599A CN110532599A (en) 2019-12-03
CN110532599B true CN110532599B (en) 2022-05-10

Family

ID=68660265

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910648474.XA Active CN110532599B (en) 2019-07-18 2019-07-18 Heart beach sand body parameter quantitative characterization method

Country Status (1)

Country Link
CN (1) CN110532599B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103699751A (en) * 2013-12-30 2014-04-02 中国石油大学(北京) Sand body reservoir architecture modeling method and system based on space vectors
CN106295054A (en) * 2016-08-22 2017-01-04 长江水利委员会长江科学院 Irregular obstacle body river course riverbed surface fractal dimension computational methods

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275806B1 (en) * 1999-08-31 2001-08-14 Andersen Consulting, Llp System method and article of manufacture for detecting emotion in voice signals by utilizing statistics for voice signal parameters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103699751A (en) * 2013-12-30 2014-04-02 中国石油大学(北京) Sand body reservoir architecture modeling method and system based on space vectors
CN106295054A (en) * 2016-08-22 2017-01-04 长江水利委员会长江科学院 Irregular obstacle body river course riverbed surface fractal dimension computational methods

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A geostatistical framework for quantifying the reach-scale morphology: 1. Variogram models, related metrics, spatial structure of river and relation to channel form☆;Carl J. Legleiter;《Geomorphology》;20120201;第205卷;第65-84页 *
一种辫状河心滩砂体构型解剖新方法;马志欣 等;《天然气工业》;20180731;第38卷(第7期);第16-24页 *

Also Published As

Publication number Publication date
CN110532599A (en) 2019-12-03

Similar Documents

Publication Publication Date Title
CN108759665B (en) Spatial target three-dimensional reconstruction precision analysis method based on coordinate transformation
CN106055794A (en) Method for building three-dimensional pipeline model in parametric manner
CN110163087A (en) A kind of human face posture recognition methods and system
CN106644868B (en) A kind of measuring method of two dimension not convex Random Aggregate ambient interfaces concentration
CN103884312A (en) Rock structure surface shape size effect analyzing method
CN112749244A (en) Method and device for realizing digital twin city space coordinate system based on illusion engine and storage medium
CN108090952A (en) 3 d modeling of building method and apparatus
CN113361143A (en) Strain analysis calculation and evaluation method and device for sunken pipeline
CN110532599B (en) Heart beach sand body parameter quantitative characterization method
CN106844966B (en) A kind of propeller blade face blade back Precise modeling
US9482526B2 (en) Method for representing the surface of an object
Zhou et al. An alignment angle error compensation method of spiral bevel gear tooth surface measurement based on tooth surface matching
CN113160301A (en) Method and system for measuring bending radius of bent pipe
CN110442906B (en) Quantitative characterization method for plane morphological parameters of cardiac beach sand body
CN114088015A (en) Rapid intelligent generation and sectioning method for rock three-dimensional fracture network model
CN110210576A (en) A kind of the figure spot similarity calculation method and system of map datum
CN111122813A (en) Water quality category evaluation method based on regional groundwater flow field direction
CN206249653U (en) A kind of multifunction writing field palace lattice
CN107063218B (en) Data processing method and device
CN113240805B (en) Method for representing rock mass crack surface by universal elliptic disc model
CN109726359B (en) Ship body head external floating slamming parallel computing method based on three-dimensional model
CN113345079A (en) Face three-dimensional model visualization method and device, electronic equipment and storage medium
CN114088014A (en) Intelligent drawing and sectioning system for three-dimensional fracture network model of rock mass
CN105589990B (en) The method of rail profile Parametric designing
CN109470290A (en) A kind of gauge pointer automatic calibrating method and device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant