JP2721344B2 - Image processing method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing method, and more particularly, to an image processing method for copying a displayed image. [Related Art] In recent years, with the remarkable development of information processing technology, the technology of processing graphic information has been rapidly improved. Apparatuses represented by so-called CAD systems, graphic drawing apparatuses, graphic copying apparatuses and the like correspond to this. Usually, a pointing device such as a digitizer is often used as a conventional means used for inputting a figure with these devices, and an operation of sequentially inputting coordinates is repeated by this means. However, with such a pointing device, inputting coordinates one by one requires too much time and effort. [Problems to be Solved by the Invention] For this reason, automatic drawing input technology has been researched and developed.
This typical process is to read the drawing with a scanner or the like,
After performing processes such as binarization and thinning, each line segment is subjected to polygonal line approximation and displayed as a vector. However, at present, only limited operability such as deletion or movement of a desired line segment (vector) is provided to the operator. Therefore, for example, when a substantially rectangular figure is displayed on the display screen, the figure cannot be changed to a regular rectangle, and the figure must be newly created in another area by a drawing command or the like. . SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and specifies a region including a partial image to be subjected to fine-printing while checking the relationship between the partial image to be subjected to fine-printing and a wide range of images including the partial image. It is an object of the present invention to provide an image processing method which makes it possible to change the partial image to the intended copy-finished figure by the operation which does not require high input accuracy. [Means for Solving the Problem] To solve this problem, the image processing method of the present invention has the following configuration. That is, the image information is stored, the stored image information is displayed, a desired area is specified on a display screen displaying the image information, and the partial image information included in the specified area is used to determine the relevant area. The vector information of the image information is extracted, the position information of the partial image is detected from the extracted vector information, the instruction of the graphic type is input, and the positional information extracted from the partial image information is A graphic of the designated graphic type is generated using the graphic drawing parameters of the above, and the image information of the generated graphic is displayed in place of the partial image information. Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings. <Description of Basic Configuration (FIG. 1)> FIG. 1 is a block diagram of a graphic processing apparatus according to an embodiment. In the drawing, reference numeral 1 denotes a vector storage unit which stores line segment information (coordinate positions of a start point and an end point of a line segment) subjected to thinning and vectorization processing via an image reading unit (not shown), and 2 is described later. This is a symbol storage unit that stores various symbols obtained in the process. Each of the vector storage unit 1 and the symbol storage 2 is constituted by a RAM. Reference numeral 3 denotes a graphic display unit that forms a graphic based on information from the vector storage unit 1 or the symbol storage unit 2 and displays the graphic on the display device 4. Reference numeral 5 denotes a vector selection unit for selecting each vector in the displayed graphic, and selects a vector group whose shape is to be changed or corrected. Reference numeral 6 denotes a symbol name designation unit for designating, by its name, what kind of symbol the vector group selected by the vector selection unit 5 is converted or corrected. Reference numeral 7 denotes a vector / symbol conversion unit that converts the vector group selected by the vector selection unit 5 into the symbol specified by the symbol name specification unit 6. Here, the information converted into the symbol is stored in the symbol storage unit 2 described above. <Description of Processing Outline (FIGS. 2 to 7)> It is assumed that the vector storage unit 1 stores vector information in a format as shown in FIG. 2, for example. As shown in the figure, each vector information stores an identifier for identifying each vector information, and coordinates of a start point and an end point of the vector. Then, at the final position of the vector information, it can be determined that there is no subsequent vector information,
The content of the identifier is “0”. FIG. 3 shows a graphic displayed by the graphic display unit 3 based on the vector information described above. In FIG. 3, numbers 101 to 111 are given for convenience, and are not actually displayed. Hereinafter, the processing contents of the embodiment will be described according to each processing step in the flowchart of FIG. = Explanation of Step S1 = Now, looking at this display, if the operator wants to change or correct the shape of a certain figure, the vector selection section 5 selects a group of vectors constituting the figure to be changed. Specifically, the vector selection unit 5 is configured by a pointing device (a keyboard may be used), and the like.
Specify with the graphic cursor linked to it. At this time, the graphic cursor designates two diagonal points to set a rectangular area including the figure. And
Vectors including both the start point and the end point in the rectangular area are sequentially searched and extracted. = Explanation of Step S2 = Next, the symbol name is inputted in the symbol name designation section 6. The symbol name is, for example, “rectangle, diamond, ellipse” or the like. Therefore, when it is desired to form a rectangle using the vectors 101 to 106, the symbol name designation unit 6 inputs the name "rectangle". = Description of Step S3 = Next, the feature amount of the selected vector group is calculated. There are various types of feature values. Here, the size of the minimum rectangle including the selected vector group (hereinafter, this rectangle is referred to as a vector circumscribed rectangle) is set as the size, and the coordinates of two points specifying the rectangle are (Xmin, Ymin). , (Xmax, Ymax). Hereinafter, an algorithm for obtaining the size of the vector circumscribed rectangle will be described with reference to the flowchart of FIG. Note that V (i) indicates the i-th vector in the selected vector group, and (V (i) · xs, V (i) · ys) indicates the start coordinate of the i-th vector, and (V (i) ) ・ Xe, V (i) ・ y
e) represents the end coordinates of the vector. The function min (a, b) returns the smaller of the arguments a and b, and max (a, b)
Returns the larger one. First, in step S501, Xmin ← min (V (1) .xs, V (1) .xe) Ymin ← min (V (1) .ys, V (1) .ye) Xmax ← max ( V (1) · xs, V (1) · xe) Ymax ← max (V (1) · ys, V (1) · ye) i ← “2” n ← The number of selected vectors is executed (“←” Means that the left term is substituted into the right term).
That is, the minimum X and Y coordinate values of both end points of the first vector are substituted for Xmin and Ymin, and the maximum coordinate value is substituted for Xmax and Ymax. Set. Next, in step S502, it is determined whether or not "i>n", that is, whether or not the minimum value and the maximum value of each axis in the vector group have been obtained. If “i ≦ n”, step S5
Execute the following process. In steps S503 to S506, Xmin, Ymin, Xmax, and Yma are calculated based on the coordinates of the start and end of the i-th vector.
Determine whether x needs to be updated. If it is determined that the values need to be updated, the processing is executed in steps S507 to S510. For example, when it is determined that the i-th vector start or end X coordinate value is smaller than the previous minimum value Xmin in the X coordinate direction (step S503), the coordinate value is newly substituted for Xmin (step S507). After executing the processing in step S506 or step S510 in this way, i is incremented by "1" in step S511, and the process returns to step S502. In this way, when the processing from step S502 to step S511 is repeated until the variable i reaches the number of selected vectors, it is determined in step S502 that "i <n", and the above-described processing ends. Then, the minimum X coordinate value in the selected vector group is stored in the variable Xmin, and thereafter, the minimum value of the Y coordinate is stored in Ymin, and the maximum values of the X and Y coordinates are stored in Xmax and Ymax, respectively. Will be. For example, when the vectors 101 to 106 are selected, Xmin = 100, Ymin = 100, Xmax = 200, Ymax = 160. When the vectors 108 to 111 are selected, Xmin = 100, Ymin = 200, Xmax = 200 and Ymax = 260. = Description of Steps S4 and S5 = When the feature amount of the vector group selected as described above is obtained, in step S4, a symbol pattern of the designated symbol name is generated based on the feature amount. I do. For example, when vectors 101 to 106 are selected and "rectangle" is designated as a symbol name, a rectangle having coordinates (100, 100) and (200, 160) at both ends of a diagonal line can be specified. When “diamond” is designated for the vectors 108 to 111, the diamond can be specified by a line connecting the midpoints of the sides of the rectangle having the coordinates (100, 200) and (200, 260) as both end points of the diagonal. Thus, the specified shape can be specified only by the feature amount. In the embodiment, data of a format of (symbol name, diagonal coordinates A, diagonal coordinates B) is formed, and the data is stored in the symbol storage unit 2 in, for example, a format as shown in FIG. This storage processing is performed in step S5.
Run in = Description of Step S6 = After storing the data relating to the symbol pattern generation in the symbol storage unit 2, the information corresponding to the selected vector is deleted from the vector storage unit 1. Thus, the selected vector group is sequentially converted into a desired regular symbol form, stored in the symbol storage unit 2, and the vector group required to form the symbol is deleted from the vector storage unit 1. Become. Therefore,
When the graphic display unit 3 detects that a key (not shown) for displaying a regular pattern has been pressed, the graphic display unit 3 displays the information in the symbol storage unit 2 on the display device 4 in FIG. It is possible to display a regular figure as shown. In the embodiment, the vector groups 101 to 106 and the vector group 10
The process of generating a symbol for 8 to 111 has been described, and the symbol generation data is shown in absolute coordinates. After the first symbol is generated, the symbol generation data is generated using the relative coordinates with respect to the symbol. You can do it. Further, the coordinates may be indicated by relative coordinates with respect to the previous symbol generation data. In this way, for example, the vector 107 and the like can be corrected so as to connect the midpoint of the base of the rectangular symbol to the vertex of the rhombus, and the position of the rhombus is relatively translated, so that the This is because it is also possible to make a correction so as to match. As described above, by designating a desired vector group and inputting a desired graphic shape, it is possible to generate a normal graphic (symbol) as much as possible. Therefore, for example, if a frame (line drawing figure) such as a handwritten flow chart is input, it is possible to easily generate a regular easy-to-see flow chart. Furthermore, since regular symbol generation data is generated,
The amount of information stored in the symbol storage unit 2 can be extremely smaller than the total amount of vector information before generation. Although the vector storage unit 1 and the symbol storage unit 2 have been described as RAMs in the embodiment, the present invention is not limited to this as long as it is a storage device that can be additionally written. For example, it may be a magnetic disk device. Further, although the graphic display unit 3 and the vector symbol conversion unit 7 in the embodiment have been described independently of each other, it is also possible to accomplish these processes with one microprocessor. Therefore, in this case, if the microprocessor processes a program (stored in a ROM (not shown)) corresponding to the flowcharts of FIGS. 4 and 5, the same processing can be executed. Becomes [Effects of the Invention] As described above, according to the present invention, while confirming the relationship between a partial image to be subjected to a fair copy and a wide range of images including the partial image, an area including the partial image to be a fair copy is determined. By performing an operation of not requiring a high input precision of designating, it is possible to change the partial image to the intended clean copy graphic.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view schematically showing the configuration of a graphic processing apparatus according to an embodiment, FIG. 2 is a view showing the storage state of vector information in a vector storage unit of the embodiment, FIG. 4 is a diagram showing an example of display based on information in a unit, FIG. 4 is a flowchart for explaining the outline of the graphic processing of the embodiment, and FIG. FIG. 6 is a diagram showing a storage state of symbol generation data stored in the symbol storage unit in the embodiment, and FIG. 7 is a diagram showing an example displayed based on information in the symbol storage unit. . In the figure, 1... Vector storage unit, 2... Symbol storage unit,
3 ... Graphic display section, 4 ... Display section, 5 ... Vector selection section, 6 ... Symbol name designation section, 7 ... Vector / symbol conversion section, 101 to 111 are vectors.

Continuation of front page    (56) References JP-A-62-190565 (JP, A)                 JP-A-60-585 (JP, A)                 JP-A-62-165273 (JP, A)                 JP-A-60-84673 (JP, A)                 JP-A-62-17876 (JP, A)                 JP-A-63-148374 (JP, A)

Claims (1)

(57) [Claims] The image information is stored, the stored image information is displayed, a desired area is designated on the display screen displaying the image information, and the partial image information is included from the partial image information included in the designated area. The position information of the partial image is detected from the extracted vector information, the instruction of the graphic type is input, and the position information extracted from the partial image information is converted into the graphic of the specified graphic type. An image processing method, wherein a graphic of the designated graphic type is generated using drawing parameters, and image information of the generated graphic is displayed instead of the partial image information.