Image processing system

• US 5,003,614 A
• Filed: 09/15/1989
• Issued: 03/26/1991
• Est. Priority Date: 06/28/1984
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tatsumi, Eisaku, Kato, Yoshinori, Tanaka, Yuzuru, Tanioka, Hiroshi
• Primary Examiner(s): Moore, David K.
• Assistant Examiner(s): Couso, Jose L.
• Application Number:
  US07/408,429
• Time in Patent Office: 557 Days
• Field of Search: 382/9, 382/18, 382/40, 382/45, 382/48, 382/51, 382/57, 382/61, 382/67, 358/452, 358/453, 358/462-464
• US Class Current: 382/171
• CPC Class Codes: G06V 10/10 Image acquisition document image scanning and transmission H04N1/00; control of digital cameras H04N23/60
• CPC Class Codes: G06V 10/24 Aligning, centring, orientation detection or correction of the image
• CPC Class Codes: G06V 10/26 Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
• CPC Class Codes: G06V 30/43 Editing text-bitmaps, e.g. alignment, spacing; Semantic analysis of bitmaps of text without OCR
• CPC Class Codes: H04N 1/411 for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures

Abstract

An image processing system has an image processing function for use in, particularly, a word processor, a copying machine, or a facsimile apparatus. This apparatus includes an image reader to read and input image information; a keyboard to input character information; a recognizing unit for recognizing the character information in the image information inputted by the image reader; and an image processor for performing the editing of characters on the basis of the result by the recognizing unit. The character information includes lines of character strings, paragraphs in document information, spaces between words, spaces between characters, hyphens, or positions of words. The image processor means performs the image editing processes such as right alignment, deletion, rewriting, insertion, search, and the like with respect to the character information recognized by the recognizing unit. With this system, the character data inputted from the keyboard and the image data read by the image reader can be processed at the same level, so that the new documents can be freely produced.

Claims

1. An image processing system comprising:

input means for inputting document information including a plurality of lines;

converting means for converting the document information inputted by said input means into dot information;

removing means for comparing the height of dot information corresponding to respective ones of said lines with a predetermined value, and, in the case that the height is smaller than the predetermined value, for designating the line as spurious and for removing the line;

detecting means for detecting character string information in the plurality of lines of the document information from which the designated line has been removed by said removing means;

memory means for storing the character string information detected by said detecting means; and

editing processing means for changing the positional structure of the character strings comprising the plurality of lines the document formation in response to the character string information stored in said memory means.

2. An image processing system according to claim 1, wherein said detecting means detects each of the lines, and a base line of each of said lines in response to the change of histogram data in a first direction along said lines, and detects a position of a paragraph, a character area, a space between adjacent two characters, word area and a space between adjacent two words of each of said lines in response to the change of histogram data in a second direction normal to said first direction.

3. An image processing system according to claim 2 wherein said processing means includes means for rearranging said paragraph, said word and said character, the deletion of said word and said character, the insertion of said word and said character and the exchange of the length of said lines.

4. An image processing system according to claim 1, wherein said input means comprises an image reader which scans character strings in a direction along the lines of said character strings composing a document, in order to optically input said document information.

5. An image processing system according to claim 1, further comprising memory means for storing said document information input by said input means, as font data.

6. An image processing system according to claim 1, wherein said detecting means sets a predetermined frame for each line of said character strings in order to detect hyphenation, in response to said dot information existing in said frame.

7. An image processing system comprising:

input means for inputting, as dot information, document information including a plurality of lines comprising character strings;

removing means for comparing the height of dot information corresponding to respective ones of said lines with a predetermined value, and, in the case that the height is smaller than the predetermined value, for designating the line as spurious and for removing the line;

calculating means for generating and outputting histogram data of the dot information of the document information from which the designated line has been removed by said removing means;

detecting means for detecting a base line of each of the character strings in response to a frequency average and a standard deviation of the histogram data outputted from said calculating means; and

processing means for changing the structure of the character strings of the document information using the base line detected by said detecting means as a reference.

8. An image processing system according to claim 7, wherein said input means comprises an image reader which scans said character strings in a direction along the lines of said character strings, in order to input said dot information.

9. An image processing system comprising:

input means for inputting, as dot information, document information including a plurality of lines;

removing means for comparing the height of dot information corresponding to respective ones of said lines with a predetermined value, and, in the case that the height is smaller than the predetermined value, for designating the lines as spurious and for removing the line;

calculating means for generating and outputting histogram data of the dot information of the document information from which the designated line has been removed by said removing means;

detecting means for detecting a base line of each of the character strings in response to a difference in frequency of the histogram data output from said calculating means; and

processing means for editing the structure of the character strings of the document information using the base line detected by said detecting means as a reference.

10. An image processing system according to claim 9, wherein said input means comprises an image reader which scans said character strings in a direction along the lines of said character strings, in order to input said dot information.