JPS6074763A - Method for transferring picture information - Google Patents

Abstract

PURPOSE:To decrease the transfer time of lots of picture information by compressing data of picture information in the range where the picture is recorded actually and transmitting the compressed data while adding coordinate information representing the location to the compressed data. CONSTITUTION:When a picture processing area 2 on a document 1 enters within the visual field of an image sensor 3, picture information outputted from a photoelectric converting section 4 is stored to a picture memory 5 by the command of a control circuit 9. A horizontal projection circuit 6 and a vertical projection circuit 7 form respectively a horizontal projection and a vertical projection. The circuit 9 reads the picture information in the range of a quadrangle 12 specified by two coordinates P(x1,y1) and P(x2,y2) from a memory 5 and the information is subject to data compression by a data compressing circuit 8. Then the circuit 9 adds a coordinate value of the quadrangle 12 to the picture information subject to data compression and transfers the result to a data processor 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image information transfer method for scanning an image recorded on a form and transferring the obtained image information.

[Technical field of invention and its problems]

In an OCR/FAX compound device, an OCR with an image processing function, an image processing device, a facsimile device, etc., the image processing area where the image to be processed on the form is recorded is scanned with a photoelectric conversion device. Valued image information is
All data was compressed using the MH method or MH method, and then transferred to a data processing device that performs tti*lA processing. Generally, the amount of image information is enormous, so
Although data compression has been used to reduce the time required to transfer image information, there has been a desire to further reduce the transfer time.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an image information transfer method that can meet these conventional demands and shorten the time required to transfer a huge amount of image information.

[Summary of the invention]

The present invention compresses the image information in the range where the image is actually recorded among the image information obtained by scanning the image processing area on the form, and then converts the compressed image into the compressed data. [Embodiment of the Invention] The following is a drawing in which information is transferred with coordinate information indicating a position in the image processing area added. The present invention will be described in detail by taking as an example a case where the image information obtained through the image processing is transferred via a telephone line or a specific line to a data processing apparatus that performs image processing at a remote location.

FIG. 1 is a diagram showing an embodiment of the present invention, in which the left side of the dotted line T shows an image input device, and the right side shows a remote data processing device! It is assumed that both devices are connected by a line.

In FIG. 1, (1) is a form that has an image processing area (2) in which an image to be processed is recorded and is conveyed in the direction of arrow S by a driving force (not shown); (3)
1tj, the light emitted from a light source (not shown) is the form (1)
An image sensor (CCD) that inputs the reflected light reflected from the top and converts it into a video signal (41 binarizes the video signal output from the image sensor (3) and performs preprocessing such as noise removal. (5) is an image memory that temporarily stores the image information output from the photoelectric conversion unit (4); (6) is the photoelectric conversion unit (4);
The horizontal projection circuit inputs the image information outputted from the image memory (5) and creates and stores a horizontal projection of the image information to be stored in the image memory (5). 7 storage vertical projection circuit, (8) image memory (
5) is a data compression circuit that performs data compression of the image information read out; (9) is a control circuit that controls the entire image input device; 00) is located in a remote location and inputs image information; A data processing device that performs processing.

Next, the operation will be explained. When the image processing area (2) on the form (1) comes into the field of view of the image sensor (3), the control circuit (9) receives an instruction and the image information output from the photoelectric conversion unit (4) is stored in the image memory. (5) and store it in
A horizontal projection circuit (6) and a vertical projection circuit (7) respectively create horizontal and vertical projections. As for the method of creating the horizontal and vertical projections, techniques conventionally used in OCR may be used, and the explanation thereof will be omitted here.

Now, as shown in Figure 2, a rectangle (
11) Consider the case where an image tilted to the right is recorded.

Then, the horizontal projection memo IJ (
131 holds a horizontal projection H shown by diagonal lines. Similarly, a vertical projection memory I in the vertical projection circuit (7) holds a vertical projection H shown by diagonal lines. )
scans this horizontal projection memory (1■ and vertical projection memory α station and calculates the horizontal projection H1 vertical projection ■coordinate positions of the respective start and end points) l'+ + X2 + yl + y
Detect l. This detected coordinate xI + xt, yl
, Y2 reads out the 16 images in the range of a rectangle a2 defined by the upper left corner of the image processing area (2) (yl) and the coordinate value p (x2.yl) from the image memo January 51, ) to compress the data. Next, the control circuit (9) adds the coordinate values of the rectangle u21 to this data-compressed image information and transfers it to the data processing device αQ. The format of the image information to which the coordinate f1η is added and transferred is as shown in FIG. 3, 1a) and 1). In Figure 3+a), the rectangle (the upper left coordinate value and the lower right coordinate value of I are added. In Figure 3), the rectangle a
The upper left coordinate value x1+y1 and the upper left coordinate value x1+y
The difference (x, -x,) and (y, -yl) between 1 and the lower right coordinate value x, +Vt are added.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, within the image processing area, the white area where no image exists is cut off, and only the image information within the minimum rectangular range where the image exists is compressed. Since the coordinate values of the minimum rectangle are added to the image information and transferred, the time required to transfer the image information can be significantly shortened.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a diagram explaining the relationship between an image and its horizontal and vertical projections, and Fig. 3 1a) and rb) are diagrams showing how image information is transferred. FIG. l・・・・・・・・・・・・Form 3・・・・・・・・・・Image sensor 4・・・・
・・・・・・Photoelectric conversion section 5・・・・・・・・・・・・
Image memory 6...Horizontal projection circuit 7
・・・・・・・・・Vertical projection circuit 8・・・・・・
...Rata Compression Circuit (7317) Patent Attorney Nori Chika (7801) Patent Attorney Yamashita
-Figure 1, Figure 2, Figure 3 (,I)

Claims (1)

[Claims] The image information obtained by scanning the entire image processing area where the image on the form is recorded is stored, and of this stored image information, the image information is the image information within the smallest rectangular area where the image actually exists. An image information transfer method characterized in that data is compressed in seconds, and coordinate information indicating a position where the data-compressed image information exists within the image processing area is added to the data-compressed image information and then transferred. .