CN109345607B - Method for automatically marking EPC picture - Google Patents
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- CN109345607B CN109345607B CN201811181643.5A CN201811181643A CN109345607B CN 109345607 B CN109345607 B CN 109345607B CN 201811181643 A CN201811181643 A CN 201811181643A CN 109345607 B CN109345607 B CN 109345607B
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Abstract
The invention discloses a method for automatically marking EPC pictures, which comprises the following processing steps: step 1: deriving a two-dimensional plane map of the EPC without marks, then establishing a grid map with the same size as the two-dimensional plane map of the EPC, and overlapping the grid map and the two-dimensional plane map of the EPC; step 2: respectively coding grids corresponding to the part graphs in the EPC two-dimensional plane graph and grids for marking OE numbers on the grid graph, so that coordinate points with different values are formed on each grid; and step 3: and respectively selecting a coordinate point of the position edge of the part and a coordinate point for marking the position edge corresponding to the OE number, and then connecting to form an indicating line. The method and the device can solve the problem of coincidence of the indicating lines and the outlines of the spare parts, and improve the efficiency of manufacturing the EPC two-dimensional plane map.
Description
Technical Field
The invention relates to the field of picture processing, in particular to a method for automatically marking an EPC picture.
Background
The EPC is a short name of electronic parts catalog, and refers to each type of automobile parts, OE numbers of parts, information, or ordered catalog of each whole car factory. The electronic catalog of the automobile parts is software compiled by an automobile supplier for conveniently checking the information of all automobile types, automobile part information and the like produced by the automobile supplier, and the assembly drawing, the exploded drawing and the part drawing of all parts of the whole car can be conveniently browsed through the software, so that the parts can be conveniently searched.
A conventional EPC diagram of an automobile is designed by 3D engineering software, and an engineer marks OE numbers of corresponding parts in the 3D engineering software. However, the indication lines of the 3D engineering software often overlap with the contours of the parts themselves, thereby interfering with the user of the EPC two-dimensional plan, and many derived EPC two-dimensional plans require the indication lines and marks to be modified again later by the image processing software.
Disclosure of Invention
The invention aims to provide a method for automatically marking an EPC picture, which can solve the problem of coincidence of an indication line and the outline of a part and improve the efficiency of manufacturing an EPC two-dimensional plane map.
In order to realize the aim, the method for automatically marking the EPC picture is provided, and comprises the following processing steps:
step 1: deriving an unmarked EPC two-dimensional plane map, then establishing a grid map with the same size as the EPC two-dimensional plane map, and overlapping the grid map and the EPC two-dimensional plane map;
step 2: respectively coding grids corresponding to the part graphs in the EPC two-dimensional plane graph and grids for marking OE numbers on the grid graph, so that coordinate points with different values are formed on each grid;
and step 3: and respectively selecting a coordinate point of the position edge of the part and a coordinate point for marking the position edge corresponding to the OE number, and then connecting to form an indication line.
Preferably, in step 1 and step 2, the grid map is composed of 3x3 pixel small grids, and a coordinate point set Q = { (3m +2,3n + 2) | m =0,1,2.. N is formed in the grid map with the coordinate of a 1x1 pixel square in the middle of each small grid as a coordinate point; n =0,1,2.
Preferably, in step 2, each small grid is subjected to identification coding through image identification.
Preferably, the image recognition process is performed by traversing a set of coordinate points Q = { (3m +2,3n + 2) | m =0,1,2.. N; n =0,1,2.. N }, each coordinate point q ∈ 0 is identified, and if R is less than 255, g is less than 255, and b is less than 255 in RGB values of the coordinate point q, the value of the coordinate point q is set to 1, otherwise, the value is set to 0.
Preferably, in step 3, the coordinate point of the edge of the position where the component is located with the value 1 is selected as the component coordinate a (x 1, y 1), and the coordinate point of the edge of the position marked with OE number with the value 0 is selected as the mark coordinate B (x 2, y 2)
Preferably, when the part coordinate a (x 1, y 1) is determined, the RGB values of the part coordinate a (x 1, y 1) are also determined, and if R <255, g <255, and b <255 in the RGB values of the part coordinate a (x 1, y 1), the point is selected and the determination of the coordinates is returned, otherwise, the point is discarded and no part is prompted to be selected.
Preferably, after the part coordinate a (x 1, y 1) and the mark coordinate B (x 2, y 2) are determined, whether the formed indication line is a horizontal indication line or a vertical indication line is judged; the judgment process is to compare | x1-x2| with | y1-y2| and to determine a transverse indicator line if | x1-x2| > | y1-y2 |; if | x1-x2| < = | y1-y2|, then it is a vertical indicator line.
Preferably, in step 3, the formation process of the horizontal indicating line is to form a first intersection point D by drawing a perpendicular line from the part coordinate a (x 1, y 1) to the x-axis and a perpendicular extension line from the mark coordinate B (x 2, y 2) to the y-axis, obtain a first intersection point D coordinate (x 1, y 2), then draw a line from the part coordinate a (x 1, y 1) and intersect with a second intersection point C point with the perpendicular extension line from the mark coordinate B (x 2, y 2) to the y-axis, so that an included angle of a set angle is formed between AC and AD, and connect ACB to obtain the horizontal indicating line.
Preferably, in step 3, the vertical indicator line is formed by forming a third intersection point E by drawing a perpendicular line from the part coordinate a (x 1, y 1) to the y-axis and a perpendicular extension line from the mark coordinate B (x 2, y 2) to the x-axis, obtaining a third intersection point E coordinate (x 2, y 1), then drawing a line from the part coordinate a (x 1, y 1) and intersecting the perpendicular extension line from the mark coordinate B (x 2, y 2) to the x-axis with a fourth F point, so that an included angle of a set angle is formed between the AE and the AF, and connecting the AFB to obtain the vertical indicator line.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the indication lines are formed by establishing coordinates through the grids, so that the problem of coincidence of the indication lines and the outlines of the parts can be solved, and the efficiency of manufacturing the EPC two-dimensional plane graph is improved. The invention can effectively improve the definition and the identification degree of the EPC two-dimensional plane graph, thereby improving the product quality. By the method, the vertex coordinates of the hot zone for interaction can be obtained from the terminal coordinate values of the marking lines through a series of related coordinate conversion algorithms, and powerful basic bottom layer support is provided for the scheme of automatically marking the interactive area of the EPC two-dimensional plane graph.
Drawings
FIG. 1 is a schematic diagram of a grid diagram structure according to the present invention;
FIG. 2 is a schematic view of the process of step 2 in the present invention;
FIG. 3 is a schematic view of the present invention showing the formation of horizontal indicating lines;
FIG. 4 is a schematic diagram of the part coordinate A and the mark coordinate determination and grid removal in the present invention;
FIG. 5 is a block flow diagram of the present invention.
Detailed Description
The invention will now be further described with reference to the following examples, which are not to be construed as limiting the invention in any way, and any limited number of modifications which can be made within the scope of the claims of the invention are still within the scope of the claims of the invention.
As shown in fig. 1-5, the present invention provides a method for automatically marking an EPC picture, which includes the following processing steps:
step 1: deriving an unmarked EPC two-dimensional plane map, then establishing a grid map with the same size as the EPC two-dimensional plane map, and overlapping the grid map and the EPC two-dimensional plane map;
and 2, step: respectively coding grids corresponding to the part graphs in the EPC two-dimensional plane graph and grids for marking OE numbers on the grid graph, so that coordinate points with different values are formed on each grid;
and step 3: and respectively selecting a coordinate point of the position edge of the part and a coordinate point for marking the position edge corresponding to the OE number, and then connecting to form an indicating line. And after forming the indication lines and OE marks on the parts in the EPC two-dimensional plane map, removing the grid map and obtaining the EPC two-dimensional plane map with the marks.
In step 1 and step 2, a grid map is composed of 3x3 pixel small grids, and a coordinate point set Q = { (3m +2,3n + 2) | m =0,1,2.. N is formed in the grid map by taking the coordinate of a 1x1 pixel square in the middle of each small grid as a coordinate point; n =0,1,2.
In step 2, each small grid is subjected to identification coding through image identification. The image recognition processing procedure is that the method comprises the steps of traversing a coordinate point set Q = { (3m +2,3n + 2) | m =0,1,2.. N; n =0,1,2.. N }, identifying each coordinate point q epsilon 0, and if R is less than 255, g is less than 255, and b is less than 255 in the RGB values of the coordinate point q, setting the value of the coordinate point q to be 1, otherwise, setting the value of the coordinate point q to be 0.
The operation code is as follows:
in this embodiment, a two-dimensional plane view of the EPC without markers is derived in the 3D engineering software, and the positions of the parts and the positions of the OE numbers corresponding to the markers are selected by manually clicking with a mouse. RGB values, i.e., color values, RGB is a color standard in the industry, i.e., RGB represents the colors of three channels, red, green and blue, and the standard includes almost all colors that can be perceived by human vision, and is one of the most widely used color systems.
In step 3, the coordinate point with the edge value of 1 at the position where the part is located is selected as a part coordinate a (x 1, y 1), and the coordinate point with the edge value of 0 at the mark position with the OE number is selected as a mark coordinate B (x 2, y 2), wherein the part coordinate a (x 1, y 1) is the most marginal coordinate point at the position where the part is located, so that the indication line cannot coincide with the contour of the part. When the part coordinates A (x 1, y 1) are determined, the RGB values of the part coordinates A (x 1, y 1) are also judged, if R <255, G <255 and B <255 in the RGB values of the part coordinates A (x 1, y 1), the point is selected and the coordinates are determined, otherwise, the point is abandoned and no part is selected, so that the operation is accurate and the definition and the recognition are ensured. The operation code is as follows:
after the part coordinate A (x 1, y 1) and the mark coordinate B (x 2, y 2) are determined, whether the formed indicating line is a horizontal indicating line or a vertical indicating line is judged; the judgment process is to compare | x1-x2| with | y1-y2| and to determine a transverse indicator line if | x1-x2| > | y1-y2 |; if | x1-x2| < = | y1-y2|, then it is a vertical indicator line.
In step 3, the forming process of the horizontal indicating line is to form a first intersection point D by leading a perpendicular line from the part coordinate a (x 1, y 1) to the x axis and a perpendicular extension line from the mark coordinate B (x 2, y 2) to the y axis, obtain a first intersection point D coordinate (x 1, y 2), then lead out a line from the part coordinate a (x 1, y 1) and intersect the perpendicular extension line from the mark coordinate B (x 2, y 2) to the y axis at a second intersection point C, so that a set 45-degree included angle is formed between the AC and the AD, and connect the ACB to obtain the horizontal indicating line. In this embodiment, the processing manner of the vertical indicating line is similar to that of the horizontal indicating line, the vertical indicating line is formed by forming a third intersection point E by drawing a perpendicular line from the part coordinate a (x 1, y 1) to the y axis and drawing a perpendicular extension line from the mark coordinate B (x 2, y 2) to the x axis, obtaining a third intersection point E coordinate (x 2, y 1), then drawing a line from the part coordinate a (x 1, y 1) and intersecting the perpendicular extension line from the mark coordinate B (x 2, y 2) to the x axis with a fourth F point, so that an included angle of 45 degrees is formed between AE and AF, and connecting AFB to obtain the vertical indicating line. In addition, the included angle may be 30 degrees, 40 degrees, 50 degrees, or 60 degrees.
The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (3)
1. A method for automatically marking EPC pictures is characterized by comprising the following processing steps:
step 1: deriving an unmarked EPC two-dimensional plane map, then establishing a grid map with the same size as the EPC two-dimensional plane map, and overlapping the grid map and the EPC two-dimensional plane map;
the grid map consists of 3x3 pixel small grids, and a coordinate point set Q = (3m +2,3n + 2) | m =0,1,2.. N is formed in the grid map by taking the coordinates of 1x1 pixel grids in the middle of each small grid as coordinate points; n =0,1,2.. N };
step 2: respectively coding grids corresponding to the part graphs in the EPC two-dimensional plane graph and grids for marking OE numbers on the grid graph, so that coordinate points with different values are formed on each grid;
identifying and coding each small grid through image identification; the image recognition processing process is that the coordinate point set Q = { (3m +2,3n + 2) | m =0,1,2.. N is traversed; n =0,1,2.. N }, identifying each coordinate point q ∈ O, if R <255, g-restricted 255 and b-restricted 255 in RGB values of the coordinate point q, setting the value of the coordinate point q to be 1, otherwise, setting the value to be 0;
and step 3: respectively selecting a coordinate point of the position edge of the spare and accessory part and a coordinate point for marking the position edge corresponding to the OE number, and then connecting to form an indicating line;
the coordinate point with the value of 1 of the edge of the position where the selected part is located is a part coordinate A (x 1, y 1), and the coordinate point with the value of 0 of the edge of the position marked by the OE number is a marked coordinate B (x 2, y 2);
when the component coordinates A (x 1, y 1) are determined, the RGB values of the component coordinates A (x 1, y 1) are also judged, if R <255, G < -255 and B < -255 in the RGB values of the component coordinates A (x 1, y 1), the point is selected and the coordinates are determined, otherwise, the point is abandoned and no component is selected;
after the part coordinate A (x 1, y 1) and the mark coordinate B (x 2, y 2) are determined, whether the formed indicating line is a horizontal indicating line or a vertical indicating line is judged; the judgment process is to compare the size of | x1-x2| with | y1-y2|, and if | x1-x2| > | y1-y2|, the judgment process is to be a transverse indicator line; if | x1-x2| < = | y1-y2|, then it is a vertical indicator line.
2. The method for automatically marking EPC pictures according to claim 1, wherein in step 3, the horizontal indicating line is formed by forming a first intersection point D by drawing a perpendicular line from the part coordinate A (x 1, y 1) to the x-axis and a perpendicular extension line from the marking coordinate B (x 2, y 2) to the y-axis, obtaining a first intersection point D coordinate (x 1, y 2), drawing a line from the part coordinate A (x 1, y 1) and intersecting the perpendicular extension line from the marking coordinate B (x 2, y 2) to the y-axis at a second intersection point C, so that an included angle of a set angle is formed between AC and AD, and connecting ACB to obtain the horizontal indicating line.
3. The method of claim 1, wherein in step 3, the vertical indication line is formed by drawing a perpendicular line from the part coordinate a (x 1, y 1) to the y-axis and a perpendicular extension line from the mark coordinate B (x 2, y 2) to the x-axis to form a third intersection point E, obtaining a third intersection point E coordinate (x 2, y 1), drawing a line from the part coordinate a (x 1, y 1) and intersecting a fourth F point with the perpendicular extension line from the mark coordinate B (x 2, y 2) to the x-axis, so that an included angle of a set angle is formed between AE and AF, and connecting AFB to obtain the vertical line.
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