CN103268418B - A kind of method of quick reading intersection electrical parameter graph - Google Patents
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Abstract
The method that the invention discloses a kind of quick reading intersection electrical parameter graph, comprises the steps: that arithmetic system reads in bitmap graphics to be analyzed；Quantity Z of curve in the X-axis coordinate range X of tablet pattern, Y-axis coordinate range Y and figure；Figure carries out matrix conversion；Remove grid lines anyhow；Figure divides row；According to the matrix value of point row figure tried to achieve, obtain in certain X, Y-axis coordinate range, the x0 of X-axis and functional relationship y0=f(x0 of the y0 of Y-axis), for the calculating in real work.Electric parameter figure can be carried out at high speed by the present invention, the quantitative analysis of high-accuracy, and has the functional relationship determined to be easy to quote calculating, for subsequent design development be normally carried out provide effective data.
Description
Technical field
The invention belongs to electric product design field, be specifically related to the side of a kind of quick reading intersection electrical parameter graph
Method, is used for quickly reading electric parameter figure, promotes degree of accuracy and the accuracy reading parameter, facilitates Electrical Engineer to contrast same
Type component parameter, selects suitable model, and optimizing product design is developed.
Background technology
Becoming increasingly popular and being widely used along with automobile, the economy of automobile, energy saving are increasingly taken seriously.Set at vehicle
During meter, how accurately type selecting avoided design, became automobile planning, problem that design, salesman are increasingly paid close attention to.
As main engine plants in order to meet the market demand, need constantly design new model and old vehicle is optimized, come
Increase the market share, product quality to be improved, reduction cost.Main engine plants at design new model or change old car at present
The when of type, need to obtain support and the assistance of parts producer, parts producer according to the product orientation of main engine plants, price and
Technology requires and other demands specified, it is provided that be suitable for the product of project demand.Due to the particularity of Automobile Design, enter in project
At the row initial stage, the when that parts producer participating in design but the most formally supplies, parts producer is protected for its knowledge property right
The purpose protected, will not submit complete, full and accurate electric parameter to, and project is normally carried out by this and car load electric parameter type selecting brings
Certain difficulty.
The currently used method quickly reading electric figure, well can analyze single electric figure,
But in the face of multiple homochromy crossing figures, need by hand homochromy crossing figure to be split into several single pattern analysiss.Due to
There is operation mistake and certain subjective error and inefficient when multiple figure to be analyzed in manual fractionation, causes zero
The electric parameter figure that part supplier provides is difficult to the further investigation quantified, and affects being normally carried out of subsequent design development.
Summary of the invention
In order to solve the problems referred to above, the method that the invention discloses a kind of quick reading intersection electrical parameter graph, including
Following steps:
1) arithmetic system reads in bitmap graphics to be analyzed；
2) quantity Z of curve in the X-axis coordinate range X of tablet pattern, Y-axis coordinate range Y and figure；
3), after figure reads in, it is x row, the matrix A of y row, the wherein white portion in figure by this graphics automatically
Dividing and show as in a matrix equal to 255 numerals, in figure, horizontal, vertical grid lines and electric parameter curve body are dark images, table
It is now that the numeral more than or equal to 0, less than 255, i.e. 0-255 represent that the point less than 255 is for having from black to the color of white gradually transition
Color dot, the point equal to 255 is achromic point；
4) horizontal grid lines is removed；
5) perpendicular grid lines is removed；
6) the intersection electrical parameter graph being analysed to is divided into two independent figures according to respective trend intelligence, then divides
Arrange into four sections of independent figures, then by computing graphic joining, for subsequent analysis；
7) Uncrossed figure is divided arrange into single figure, in order to subsequent calculations；
8) view shape concrete condition adjusts analysis method, divides column processing to the further figure of figure after removing grid；
9) according to the matrix value of point row figure tried to achieve, draw coordinate figure in X, Y-axis of each point in this figure (x0,
Y0), according to the relation of each coordinate figure (x0, y0), carry out fitting of a polynomial, obtain in certain X, Y-axis coordinate range, X
The x0 of axle and functional relationship y0=f(x0 of the y0 of Y-axis), for the calculating in real work.
Wherein, the method removing horizontal grid lines in described step 4) is:
A, take a figure line and analyze, the scope that the numerical value of variable i 1 is 1 to x is set, analyzes the point wherein less than 255,
Record its quantity a1 and matrix sequence number, and by its matrix sequence number record in new matrix B；
B, in arbitrary figure line, have the figure line of grid lines compared with the figure line not having grid lines, coloured
The quantity of point substantially increases, in this, as the condition judged；
C, in arbitrary figure line, have quantity a1 of the color dot half more than figure total columns x, i.e. during a1 > x/2, i.e.
Can determine that this figure line is horizontal grid lines place line；
D, a cycling condition is set, from 1 to matrix B total number, is incremented by successively according to natural number and performs process, by this line
In the numerical value of all points being less than 255 be converted into 255；
E, a cycling condition is set, the total number of row from 1 to y, it is incremented by successively according to natural number and performs process, by all lines
Analyze and process one time, remove all lines in figure.
Wherein, on the basis of removing horizontal grid lines, the concrete grammar removing perpendicular grid lines in described step 5) is as follows:
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j1 be set, analyze the point wherein less than 255,
Record its quantity b1 and matrix sequence number, and by its matrix sequence number record in new Matrix C；
B, in arbitrary figure file, have the figure file of grid lines compared with the figure file not having grid lines, coloured
The quantity of point substantially increases, in this, as the condition judged；
C, in arbitrary figure file, have quantity b1 of the color dot half more than total line number y of figure, i.e. during b1 > y/2,
Judge that this figure file is as vertical grid lines place file；
D, a cycling condition is set, from 1 to the total number of Matrix C data, is incremented by successively according to natural number and performs process, should
In file, the numerical value of all points being less than 255 is converted into 255；
E, a cycling condition is set, arranges total number from 1 to x, be incremented by execution according to natural number successively and process statement, will be all
File analyzes and processes one time, removes all files in figure.
Wherein, described step 8) in the method removing the figure further figure point column processing after grid be:
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j2 be set, analyze the point wherein less than 255,
Record its matrix sequence number, and by its matrix sequence number record in new matrix D；
B, several pixels may be occupied in same string due to an electrical parameter graph simultaneously, so matrix D
Data are:
[m, m+1, m+2, m+n, m+n+1, m+n+2, m+n+p, m+n+p+1, m+n+p+2, m+n+p+
Q, m+n+p+q+1, m+n+p+q+2 ...], (wherein m > 0, n > 2, p > 2, q > 2, m, n, p, q are natural number)；
C, a cycling condition k1 is set, subtracts one from 1 to the total number of matrix D data, analyze D(k1+1 successively)-D(k1) be
No being more than 1, record meets the matrix sequence number of condition, and by its matrix sequence number record in new matrix E, in matrix E, data are i.e.
For natural trip point discontinuous in matrix D, be in figure file have color dot and an achromic point adjacent have color point coordinates；
Whether d, the total number of trip current E data be equal to quantity Z-1 of curve in figure.
Wherein, in described step d),
D1) if the total number of matrix E data is not equal to Z-1, then judge that this figure file arranges as non-effective data, by this file
In the numerical value of all points being less than 255 be converted into 255；
D2) if the total number of matrix E data is equal to Z-1, then judge that this figure file arranges as valid data, according in matrix E
Have color dot and achromic point adjacent in the figure file of record has color point coordinates, and Z group in this figure file is had color point coordinates
It is removed and placed in record in different matrixes respectively；
D3) one cycling condition is set, arranges total number from 1 to x, be incremented by successively according to natural number and perform process, by all vertical
Row analyzing and processing one time, has Z group color point coordinates to be removed and placed in record in different matrixes respectively, and divides according to its matrix value
Do not show.
A kind of method of the quick reading intersection electrical parameter graph of the present invention, graphics process merit based on matlab software
Can, user only needs X-axis coordinate range (without the unit) X of tablet pattern, bent in Y-axis coordinate range (without unit) Y and figure
Quantity Z of line, and read in the electrical parameter graph specified, figure (containing homochromy intersection figure) in operational system analysis figure, from
Move and be divided into several single figures, and many to each images outputting electric parameter curve chart in X, Y coordinate span
Formula fitting result, forms the Y=f(X for each figure) functional relationship, facilitate follow-up analytical calculation to use.
This quickly reads the method for intersection electrical parameter graph, and electric parameter figure can carry out high speed, high precision
The quantitative analysis of rate, and have the functional relationship determined to be easy to quote calculating, for subsequent design development be normally carried out provide
Effective data.
Accompanying drawing explanation
The original electrical Parameter Map (X-axis, Y-axis are as shown in the figure) that Fig. 1: supplier provides；
Fig. 2: substitute into the electric parameter figure (only retaining main graphic part) being analyzed in arithmetic system calculating；
Fig. 3: arithmetic system reads in figure and transfers the display figure of gray scale figure to；
Fig. 4: arithmetic system automatically processes the display figure removing horizontal grid lines (X axis)；
Fig. 5: arithmetic system automatically processes the display figure removing vertical grid lines (Y-axis)；
Fig. 6: intersection electrical parameter graph to be analyzed；
Fig. 7,8,9,10: the figure in arithmetic system processing procedure；
Figure 11,12: arithmetic system process after figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is specifically described.
1, concept first it is described as follows:
A, in gray scale figure, arithmetic system represents from black to the color of white the most gradually transition with 0-255；
B, the figure of reading arithmetic system are bitmap graphics, are i.e. that figure is divided into several lattices, each little side
Lattice are referred to as a pixel, these pixels grid rearranged, and are referred to as " grating ".Computer is by representing these pictures
The information such as the position of vegetarian refreshments, color, brightness, thus represent view picture figure；
The sequence number of data, such as matrix in c, matrix serial number matrix
, its matrix sequence number 1 to 6 is test (1) to test (6), and its value is a, b, c, d, e, f respectively.
2, arithmetic system reads in bitmap graphics to be analyzed, as shown in Figure 2.
3, X-axis coordinate range (without the unit) X of tablet pattern, curve in Y-axis coordinate range (without unit) Y and figure
Quantity Z.
4, after figure reads in, this graphics is x row, y row (capital and small letter represents different looking like) by system automatically
Matrix A, wherein the white portion in figure shows as in a matrix equal to 255 numerals (i.e. achromic point), horizontal, vertical grid in figure
Line and electric parameter curve body are dark images, show as the numeral more than or equal to 0, less than 255, as shown in Figure 3.
5, horizontal grid lines (X axis) concrete grammar is removed as follows:
A, take a figure line and analyze, the scope that the numerical value of variable i 1 is 1 to x is set, analyzes the point wherein less than 255
(i.e. having color dot), records its quantity a1 and matrix sequence number, and by its matrix sequence number record in new matrix B；
B, in arbitrary figure line, the figure line having grid lines (includes electricity with the figure line not having grid lines
The line of gas parameterized graphics and the line not having electrical parameter graph) compare, there is the quantity of color dot substantially to increase, in this, as sentencing
Disconnected condition；
C, in arbitrary figure line, have quantity a1 of the color dot half more than figure total columns x, i.e. during a1 > x/2, i.e.
Can determine that this figure line is horizontal grid lines (X axis) place line；
D, a cycling condition is set, from 1 to matrix B total number, is incremented by execution according to natural number successively and processes statement, should
In line, the numerical value of all points (i.e. having color dot) being less than 255 is converted into 255(i.e. achromic point)；
E, a cycling condition is set, the total number of row from 1 to y, it is incremented by execution according to natural number successively and processes statement, will be all
Line analyzes and processes one time, removes all lines in figure；
F, it is disposed effect as shown in Figure 4.
6, perpendicular grid lines (Y-axis) concrete grammar is removed following (on the basis of removing except horizontal grid lines):
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j1 is set, analyzes the point wherein less than 255
(i.e. having color dot), records its quantity b1 and matrix sequence number, and by its matrix sequence number record in new Matrix C；
B, in arbitrary figure file, the figure file having grid lines (includes electrically with the figure file not having grid lines
The file of parameterized graphics and the file not having electrical parameter graph) compare, there is the quantity of color dot substantially to increase, in this, as judgement
Condition；
C, in arbitrary figure file, have quantity b1 of the color dot half more than total line number y of figure, i.e. during b1 > y/2,
Judge that this figure file is as vertical grid lines (Y-axis) place file；
D, a cycling condition is set, from 1 to the total number of Matrix C data, is incremented by execution according to natural number successively and processes statement,
The numerical value of points (i.e. having color dot) being less than 255 all in this file is converted into 255(i.e. achromic point)；
E, a cycling condition is set, arranges total number from 1 to x, be incremented by execution according to natural number successively and process statement, will be all
File analyzes and processes one time, removes all files in figure；
F, it is disposed effect as shown in Figure 5.
7, the intelligent pattern that intersects divides intersection electrical parameter graph that row will be to be analyzed in Fig. 6 according to respective trend intelligence
Be divided into two independent figures, i.e. the figure intersected in Fig. 6, divide and arrange into tetra-sections of independent figures of Fig. 7, Fig. 8, Fig. 9, Figure 10, then
By computing intelligence, Fig. 7, Figure 10 being combined into Figure 11, Fig. 8, Fig. 9 are combined into Figure 12, for subsequent analysis.
8, figure divides row three electrical parameter graph together will divide and arrange into three independent figures in Fig. 5, in order to
Subsequent calculations.
9, subsequent analysis method view shape concrete condition need adjust, take Fig. 5 instance analysis, be three sections disjoint electrically
Parameterized graphics, first half grid processing method is universal method, and latter half of figure divides row method for disjoint for some sections
Figure uses.
10, Fig. 5 further figure point column processing after removing except grid:
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j2 is set, analyzes the point wherein less than 255
(i.e. having color dot), records its matrix sequence number, and by its matrix sequence number record in new matrix D；
B, several pixels may be occupied in same string due to an electrical parameter graph simultaneously, so matrix D
Data are:
[m, m+1, m+2, m+n, m+n+1, m+n+2, m+n+p, m+n+p+1, m+n+p+2, m+n+p+
Q, m+n+p+q+1, m+n+p+q+2 ...], (wherein m > 0, n > 2, p > 2, q > 2, m, n, p, q are natural number)；
C, a cycling condition k1 is set, subtracts one from 1 to the total number of matrix D data, analyze D(k1+1 successively)-D(k1) be
No being more than 1, record meets the matrix sequence number of condition, and by its matrix sequence number record in new matrix E, in matrix E, data are i.e.
For natural trip point discontinuous in matrix D, be in figure file have color dot and an achromic point adjacent have color point coordinates；
Whether d, the total number of trip current E data subtract one equal to quantity Z of curve in Z-1, i.e. figure.
1) if being unsatisfactory for, then judge that this figure file arranges as non-effective data, by points being less than 255 all in this file
The numerical value of (i.e. having color dot) is converted into 255(i.e. achromic point)；
2) if meeting, then judge that this figure file arranges as valid data, according to coloured in the figure file of record in matrix E
Point has color point coordinates with achromic point adjacent, has color point coordinates to be removed and placed in respectively Z group in this figure file different
Record in matrix；
3) cycling condition is set, arranges total number from 1 to x, be incremented by execution according to natural number successively and process statement, will be all
File analyzes and processes one time, has color point coordinates to be removed and placed in record in different matrixes respectively Z group in Fig. 5.
11, according to the matrix value tried to achieve, it is known that each point coordinate figure (x0, y0) in X, Y-axis in this figure, according to
Each (x0, y0) relation, carries out fitting of a polynomial, obtains in certain X, Y-axis coordinate range, the x0's of X-axis and the y0 of Y-axis
Functional relationship y0=f(x0), facilitate the calculating in real work to use.
12, directly read graphical information by matlab, effectively improve precision and the speed of interpreting blueprints, make the project initial stage
Quickly, the electric parameter figure of the multiple parts of Accurate Analysis be possibly realized, can effectively optimize supplier and parts type selecting, lifting
Designing quality, reduce risk after sale, practical engineering project has splendid prospect of the application.
Claims (3)
1. the method for a quick reading intersection electrical parameter graph, it is characterised in that comprise the steps:
1) arithmetic system reads in bitmap graphics to be analyzed；
2) quantity Z of curve in the X-axis coordinate range X of tablet pattern, Y-axis coordinate range Y and figure；
3) after figure reads in, being x row, the matrix A of y row by this graphics automatically, wherein the white portion in figure exists
Showing as in matrix equal to 255 numerals, in figure, horizontal, vertical grid lines and electric parameter curve body are dark images, show as
Numeral more than or equal to 0, less than 255, i.e. 0-255 represent that the point less than 255 is coloured from black to the color of white gradually transition
Point, the point equal to 255 is achromic point；
4) horizontal grid lines is removed；
5) perpendicular grid lines is removed；
6) two the intersection electrical parameter graph being analysed to are divided into two independent figures according to respective trend intelligence, then divide
Arrange into four sections of independent figures, then by computing graphic joining, for subsequent analysis；
7) the not cross section of the figure of intersection is divided arrange into independent figure, in order to subsequent calculations；
8) divide column processing to the further figure of figure after removing grid, be specifically processed as:
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j2 is set, analyzes the point wherein less than 255, record
Its matrix sequence number, and by its matrix sequence number record in new matrix D；
B, several pixels may be occupied in string, so containing due to a curve in an electrical parameter graph simultaneously
The data having a matrix D of the electrical parameter graph of a plurality of curve are: [m, m+1, m+2, m+n, m+n+1, m+n+2
, m+n+p, m+n+p+1, m+n+p+2, m+n+p+q, m+n+p+q+1, m+n+p+q+2 ...], (wherein m > 0, n >
2, p > 2, q > 2, m, n, p, q are natural number)；
C, a cycling condition k1 is set, subtracts one from 1 to the total number of matrix D data, analyze D(k1+1 successively)-D(k1) the biggest
In 1, record meets matrix sequence number D (K1) of condition, and by its matrix sequence number record in new matrix E, in matrix E, data are i.e.
For natural trip point discontinuous in matrix D, be in figure file have color dot and an achromic point adjacent have color point coordinates；
Whether d, the total number of trip current E data are equal to quantity Z-1 of curve in figure,
D1) if the total number of matrix E data is not equal to Z-1, then judge that this figure file arranges as non-effective data, by institute in this file
The numerical value having the point less than 255 is converted into 255；
D2) if the total number of matrix E data is equal to Z-1, then judge that this figure file arranges as valid data, according to record in matrix E
Figure file in have last of color point coordinates and matrix D of having of color dot and achromic point adjacent to have color point coordinates, will
In this figure file, Z group has color point coordinates to be removed and placed in record in different matrixes respectively；
D3) one cycling condition is set, arranges total number from 1 to x, be incremented by successively according to natural number and perform process, all files are divided
Analysis processes one time, Z group has color point coordinates be removed and placed in record in different matrixes respectively, and shows respectively according to its matrix value
Show；
9) according to the matrix value of point row figure tried to achieve, each point coordinate figure (x0, y0) in X, Y-axis, root in this figure are drawn
According to the relation of each coordinate figure (x0, y0), carry out fitting of a polynomial, obtain in certain X, Y-axis coordinate range, the x0 of X-axis
Functional relationship y0=f(x0 with the y0 of Y-axis), for the calculating in real work.
Method the most according to claim 1, it is characterised in that the method removing horizontal grid lines in described step 4) is:
A, take a figure line and analyze, the scope that the numerical value of variable i 1 is 1 to x is set, analyzes the point wherein less than 255, record
Its quantity a1 and matrix sequence number, and by its matrix sequence number record in new matrix B；
B, in arbitrary figure line, have the figure line of grid lines compared with the figure line not having grid lines, have color dot
Quantity substantially increases, in this, as the condition judged；
C, in arbitrary figure line, have quantity a1 of the color dot half more than figure total columns x, be i.e., during a1 > x/2, can sentence
This figure line fixed is horizontal grid lines place line；
D, a cycling condition is set, from 1 to matrix B total number, is incremented by successively according to natural number and performs process, by institute in this line
The numerical value having the point less than 255 is converted into 255；
E, a cycling condition is set, the total number of row from 1 to y, it is incremented by successively according to natural number and performs process, all lines are analyzed
Process one time, remove all lines in figure.
Method the most according to claim 1 and 2, it is characterised in that on the basis of removing horizontal grid lines, described step 5)
The concrete grammar that grid lines is erected in middle removal is as follows:
A, take a figure file analysis, the scope that numerical value is 1 to y of variable j1 is set, analyzes the point wherein less than 255, record
Its quantity b1 and matrix sequence number, and by its matrix sequence number record in new Matrix C；
B, in arbitrary figure file, have the figure file of grid lines compared with the figure file not having grid lines, have color dot
Quantity substantially increases, in this, as the condition judged；
C, in arbitrary figure file, have quantity b1 of the color dot half more than total line number y of figure, be i.e., during b1 > y/2, i.e. can determine that
This figure file is vertical grid lines place file；
D, a cycling condition is set, from 1 to the total number of Matrix C data, is incremented by successively according to natural number and performs process, by this file
In the numerical value of all points being less than 255 be converted into 255；
E, a cycling condition is set, arranges total number from 1 to x, be incremented by execution according to natural number successively and process statement, by all files
Analyze and process one time, remove all files in figure.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103049598A (en) * | 2012-11-29 | 2013-04-17 | 北京航空航天大学 | Electromagnetic compatibility test curve picture information extraction method based on pixel coordinate strategy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049598A (en) * | 2012-11-29 | 2013-04-17 | 北京航空航天大学 | Electromagnetic compatibility test curve picture information extraction method based on pixel coordinate strategy |
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| 基于matlab的图像曲线数据提取方法;付昆昆等;《汕头大学学报(自然科学版)》;20100515;第25卷(第2期);第51-55页 * |
| 基于图像处理技术的工程曲线数字化及应用;卢紫微等;《微计算机应用》;20081015;第29卷(第10期);第65页第2.2-2.3节，第3.1节及图1 * |
| 智能化工程计算中曲线图的数字化处理;王建文等;《陕西科技大学学报》;20030825;第21卷(第4期);第132页第1.3节 * |
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