Optical character reader

[Detailed Description of the Invention]

[Industrial Application] The present invention relates to the optical character reading device which reads the character of @ vote provided with a nine-character preprinted guide line, and relates to the optical character reading device which reads the list provided with the character preprinted guide line pattern which consists of A pot of a predetermined size especially. [Description of the Prior Art] The optical character reader which reads the character of the list provided with the character preprinted guide line printed by A pot of the predetermined size was performing the following character separation to JP,61-30313,B like a statement. That is, the point detected by check appearance (the lump of a signal "1" with the size below a fixed range is made into a point.) makes a left end the scanning sequence position which reached more than the fixed number, beginning from the vertical scanning sequence position of the leftmost of a quantization pattern, and moving to the direction of the right. In the range in which the dotted line of the length obtained by applying or subtracting the position gap width of a vertical dotted line from the scanning sequence position which applied the width of the character preprinted guide line to the left end should exist, the detected point makes a right end the scanning sequence position which reached more than the fixed number. Thereby, between a left end and right ends can regard it as one frame. In the range in which the dotted line of the length obtained by applying the position gap width of the interval of a frame and a vertical dotted line which adjoined from the right end of a frame should exist, the above-mentioned check appearance detects the left end of the following frame. The same scan is performed, a right end is detected and the detected point is eliminated, respectively. To the point beside the beginning of the upper end of an one more character preprinted guide line, and a lower end, the range to which the upper end of a character box and a lower end should exist within limits in which the dotted line of the above-mentioned length should exist is set up, It is a point position of a higher rank, respectively about the position of the point of the top of a point and the position of the bottom point which were detected by carrying out point detection at above-mentioned within the limits, It was considered as the low-ranking point position, the position gap width between horizontal points was applied to the point position of the above-mentioned higher rank, the range was determined that the upper end of a character box and a lower end should exist by reducing the position gap width between horizontal points in the point position of the above-mentioned low rank, the point detected within the limits of this was eliminated, and only an one-character pattern was detected. [Problem(s) to be Solved by the Invention] The frame of the upper end and lower end which the above-mentioned conventional technology detects the left end of a frame, and perform an example H setup of right end frame detection in consideration of a frame position gap, and detect a right end frame from the left end position, A detection range is set up and the primary frame detection to detect detects the 9th frame from the top point of a right-and-left edge frame, and f& low rank point by setup of a detection range in consideration of the information between frames, and a frame position gap from a right end position. Thus, since the virtual position information on a frame was performing delimitation, when a character etc. were filled in near the case where between one spacing and a frame is small, or a frame, there were problems, like it becomes it is difficult and impossible misreading or detecting delimitation. The object of the present invention detects a character preprinted guide line easily, and is .. It is in providing the optical character reading device which removes this and can extract an entry character pattern easily. [Means for Solving the Problem] A means to search for a contour point of an image pattern which contains an one-character preprinted guide line in an optical character reading device which reads a list provided with a character preprinted guide line which consists of A pot of a predetermined size in which the above-mentioned object is smaller than an one-character pattern. A means to judge whether it is an outline of a character preprinted guide line by size information of an outline of a pattern with a contour point discovered by the search, and a means to remove a pattern of an one-character preprinted guide line are provided, and it is attained by optical character reading device extracting only an entry character pattern. The method of pursuing an outline of a pattern with a means to search for a contour point of an image pattern, and a contour point for which it was searched should just use a publicly known method, for example, should just perform it by a method of a statement of JP,61-36818,A. [For Work ] A judging means of being an outline of a character preprinted guide line carries out the comparison judging of the size information of an outline discovered one time with a Contour threshold. Therefore, a frame is adjoined and a character is indicated. It does not misread, even when between frames is small. [Example] Hereinafter, the example shown in an attached drawing explains the present invention still in detail. Drawing 1 shows an example of the composition of the optical character reading device with which the 1 present invention was applied. As for a list and 3, in the list conveyance mechanism in which 1 contains a conveyance roller in Drawing 1, and 2, a light source and 4 are photo acceptance units. 5 starts 2 value-ized circuit, a memory and 7 start 6, and it equips. Character box position information is stored with the filing device 8. 9 -- a recognition bag -- [ -- it is . When list 2 reaches the reading section which is conveyed by list conveyance mechanism 1 and consists of one light source 3 and photo acceptance unit 4, it is optically scanned by 9 luminescence j [3. The light reflected by list 2 enters into photo acceptance unit 4, and photo acceptance unit 4 changes into an electric signal the frame pattern and character pattern on the list which enters one by one, and outputs them. As for photo acceptance unit 4, a semiconductor CCD sensor etc. are used. 2 value-ized circuit 5 is a predetermined threshold about an input electricity signal. It changes into the 2 Value-ized item of "0" or "1", and outputs to memory 6. Memory 6 stores the image of the pattern on a list as a 2 value-ized item pattern. Logging device 7 is one character at a time about the character pattern which performed 1 outline pursuit, extracted only the character pattern from the pattern in memory 6 while referring to the character box position information stored in file Wear [8, and was extracted!! It outputs to Identifying device 9. Next, it starts and explains the details of the character logging processing in Wear [7. In inside W of 0 figure in which the pattern which is read in a list and stored in memory 6 consists of frame pattern f Engineering~f and character pattern 08~C3 like Drawing 2, 2 g in height of a frame of frame width and H is an interval of a frame. logging device 7 reads position information x, y, and W on frame pattern f, stored in file Wear [18, H, and g -- frame pattern f -- more -- gx-gx and g. the case of 0 this example which sets window a to the Only outside -- g and Is -- about 2 wa(s) and g2 are about 3-m9 g and Is 1.5 W+g-gx. In window a set [ above-mentioned ] up, the contour point of a pattern is searched and an outline is pursued about the pattern which exists in window a. All the outlines of the pattern are extracted like Drawing 4 C1' and D1~Dn. The method of the above-mentioned outline pattern extraction can be easily done by the method of indicating to JP,61-36878,A. Outline length of the extracted outline size information. The pattern judged in one height as compared with each threshold of character preprinted guide line Contour to be a small outline is removed. Only an entry character can be easily extracted by repeating the account of @ by creating the ingredient list table removing one-character preprinted guide line D1~Dn, and showing the pattern which was not able to be removed in Drawing 5 as an entry character pattern. Logging device 7 can perform recognition of one character by transmitting the outline pattern data of character pattern CI' of Drawing 4 to recognition device 9. [Effect of the Invention] Since the character preprinted guide line pattern and the entry character pattern were easily separated and extracted according to the 0 present invention so that clearly from the above explanation, in the character and the frame, reading became possible also the same color, and the restrictions to a list design were eased.

[Brief Description of the Drawings]

The block diagram in which Drawing 1 shows one example of the 1 present invention, and Drawing 2 are a figure showing an example of the image pattern which is the target of processing of the 1 present invention, and Drawing 3, The figure showing an example of the window set up by the present invention from the pattern of Drawing 2, the figure in which Drawing 4 shows the outline pattern in a window, and Drawing 5 are table lineblock diagrams which the extracted pattern records. 1 ... List conveyance mechanism 2 [ 4 / ... Memory 7 / ... It starts and is Wear[8. / ... Filing device 9 / ... Recognition device / ... Photo acceptance unit 5 ... 2 value-ized circuit 6 ] ... List 3 ... Light source