JPS61100876A - Method of segmenting graphic in graphic recognizing device - Google Patents

Abstract

PURPOSE:To make graphic recognition at high accuracy without influenced by outer form frame by segmenting upper and lower ends and right and left ends of whole graphic, right and left ends and upper and lower ends of each graphic, and further cutting out upper and lower ends and right and left ends of each cut out graphic. CONSTITUTION:An object of reading 2 is scanned in the direction of arrangement of graphics 1, and the first projection patterns 3 are made on Y-axis, and upper and lower ends as a whole are segmentted by a first segmenting device. Each segmented column is scanned in the direction at right angles to the direction of arrangement, and the second projection patterns 5- are made on X-axis. Right and left ends of each column are segmentted and the outer form frame 7 of the graphic 1 is substantially segmented. Outer frames 7- of the cut out graphic 1 is further scanned by a scanning device, and lower end and left and right ends of the graphic 1 are segmentted.

Description

[Detailed Description of the Invention] (Field of the Invention) The present invention is useful for determining whether a betting ticket such as a horse racing ticket or a car ticket is a winning ticket, or for reading an entrance ticket, a funeral, etc. Alternatively, the present invention relates to a figure cutting method in a figure recognition apparatus used for reading figures such as English characters, in which each figure is cut out from an object to be read, such as the voting ticket.

(lI! Essentials of the Invention) The present invention attempts to accurately cut out the outer frame of each figure in order to ensure good matching of each figure with a standard pattern.

(Prior art and its problems) As shown in FIG.
For the object 02 to be read, which consists of parallel figures, when recognizing the figures, a scanning means such as an image sensor is used to scan the figures in the parallel direction (X-axis direction) and in the direction perpendicular thereto (I).
(Y-axis direction), and the projection pattern is 0 in each direction.
3 and 04, and binarize it at slice levels 05 and 06, and cut out the upper and lower ends of the entire figure 01 arranged by scanning in the X-axis direction, and cutting out the upper and lower ends by scanning in the Y-axis direction. Figure 01 cut out...
・Cut out the left and right ends of the figures 01 arranged in After cutting out the figure OI, the upper and lower ends of each figure OI were cut out to cut out the outer frame 07 for each figure 01, . . . .

However, such conventional methods also
As shown in the figure, if there is a vertical or horizontal shift in the arrangement of the figures OI, each cut out figure 0
The top length or left and right length of the outer frame 07 for each figure 01 is longer than the top and bottom length or the left and right length of each figure 01, and when pattern matching with the 11M pattern, it is cut out. As a result of the outer shape frame 07 being made to correspond to the standard pattern, there is a drawback that the recognition accuracy is lowered, such as determining that it is unrecognizable even if the figure OIs should correspond to each other.

Furthermore, as shown in Figure 1O, if there is noise 08, such as ink splashing or blurring during printing, in the vicinity of figure 01, even though it is discontinuous with figure 01, First, the outer frame 07 is cut out with the fuss that includes those noises 08, and it is recognized as above! There was a drawback that accuracy decreased.

(Object of the Invention) The present invention has been made in view of the above circumstances, and an object of the present invention is to enable accurate cutting out of the outer frame of each figure.

(Phosphoric Acid and Effects of the Invention) In order to achieve the above four purposes, the figure cutting method of the figure recognition device of the present invention applies to a reading target consisting of parallel figures, each of which is composed of continuous lines. The scanning means scans in the figure parallel direction, the first cutting means cuts out the upper and lower ends of the figure, the scanning means scans the object to be read in a direction perpendicular to the figure parallel direction, and the second cutting means cuts out the upper and lower ends of the figure. The left and right ends of the figure are cut out, thereby cutting out an external frame for each figure, and then the first and second cutting means perform a cutting process on the outer frame for each figure.

In other words, first, cut out the top and bottom or left and right ends of the entire array of figures, then cut out the left and right or top and bottom ends of each figure, and then cut out the top and bottom and left and right ends of each figure. I'm going.

Therefore, due to cutting out the entire array of figures, the vertical length or horizontal length of the outer frame of each cut out figure becomes longer than the upper F length or the left and right lengths of the convex figure, respectively. If it is fixed, the long part can be removed by cutting out each shape, and even if there is noise such as springs or bleeding, it is not continuous across both the shape arrangement direction and the direction perpendicular to it. The gap can be removed and each shape is close to its outer edge! With the 7-fold support, the external frame can be accurately cut out, and when matching with the Shibei pattern, figures can be compared without being affected by the external frame, allowing highly accurate figure recognition.

(Description of Embodiments) Hereinafter, the figure cutting method of the figure recognition RA apparatus of the present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a flowchart showing the operation of the embodiment of the present invention. First, read pairs of figures such as alphabetic characters and numbers, each composed of continuous lines, arranged in parallel in the rhtx axis direction. J! 2, as shown in FIG. 2, a scanning means (not shown) such as an image sensor scans in the arrangement direction of the figures l, and creates a first projection pattern 3 on the Y axis, and , the projection pattern 3 is binarized at a first slice level 4, and the upper and lower ends of the arranged figures 1 as a whole are cut out by the first cutting means (step Nl).

Thereafter, as shown in FIG.
Each cut out column is scanned in the direction perpendicular to the arrangement direction, and its second projection pattern 5... is created on the X-axis, and the projection pattern 5 is scanned at the second slice level 6 by 2f.
Then, the left and right ends of each figure 1 are cut out for each row by the second cutting means, thereby cutting out substantially the outer frame 7 of the figure 1 (step N2).

Next, as shown in FIG. 4, the outer frame 7 of FIG. A pattern 8 is created on the Y axis, and the projected pattern 8 is binarized at the third slice level 9, and the first cutting means generates a figure! Cut out the upper and lower ends of (Step N3).

Thereafter, as shown in FIG. 5, the scanning means scans the outer frame 7 of the figure 1 in a direction perpendicular to the figure arrangement direction to create the projection pattern 710 on the X axis, and 4 projection pattern 10 at the 4th slice level 11
Then, the left and right ends of figure 1 are cut out by the second cutting means (step N4).

In step N3 and step N4, the projection pattern 8. The cutting width part 8a of each IO, IO
By removing a, the noise 12 mentioned above is removed. Furthermore, as shown in FIGS. 6 and 7,
In step N5 and step N6, the upper and lower ends and the left and right ends are cut out, and the noise 1
2 is removed to accurately cut out the outer frame of figure l.

According to the present invention, the cutting of the upper and lower ends and the cutting of the left and right ends may be repeated three or more times. In addition, in the case of repeating defeats and defeats, for example, compare the cutting result at that point with the cutting result from the previous time using a comparing means, and judge whether or not both cutting results are the same.
By repeating the extraction only when they are not the same, if there is no noise, the processing speed is increased without repeating the extraction, and if there is a lot of noise, the noise can be suppressed more reliably. It may be removed.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing an embodiment of the figure cutting method in the figure recognition device of the present invention, and FIGS.
The figures are front views showing the operating states of steps Nl to N6 in order, and FIGS. 8 to 10 are
FIG. 6 is a front view showing the operating state of each conventional example. 1. Figure, 2. Reading target.

Claims (3)

[Claims] (1) A scanning device scans a reading target consisting of parallel figures, each of which is composed of continuous lines, in the figure parallel direction, and a first cutting unit cuts out the upper and lower ends of the figure, and The scanning means scans the figure in a direction perpendicular to the figure parallel direction, the second cutting means cuts out the left and right ends of the figure, thereby cutting out an outer frame for each figure, and then an outer frame for each figure. A method for cutting out a figure in a figure recognition apparatus, characterized in that the first and second cutting means perform a cutting process on the figure. (2) The figure cutting method according to claim 1, characterized in that the cutting process for each of the figures by the first and second cutting means is repeated a plurality of times. (3) In the cutting process for each figure by the first and second cutting means, the cutting process result at that point and the previous cutting process result are compared, and only when the two cutting process results are not the same, the cutting process is performed. 3. The figure cutting method according to claim 2, wherein the method repeats the following steps.