JPH06103351A - Document register device - Google Patents

Abstract

PURPOSE:To simplify a document registering job and also to improve the registering efficiency by reading plural color characteristics corresponding to each color of a document with an image reader and registering these color characteristics after synthesizing them. CONSTITUTION:When both 1st and 2nd image readers 16 and 22 have the same reading subject position and the same picture element density, the image information read by both readers 16 and 22 are stored in a storage 38 with the image signals of the same position synthesized by an image processor 36. Then, the image information read by both readers 16 and 22 and outputted basing on the color sensitivity characteristic of an image reading element are properly amplified. These amplified information undergo the A/D conversion for each picture element and then undergo the multilevel conversion. Then, the sum of the multilevel signals of the picture element corresponding to each other is calculated. Thus both readers 16 and 22 read the desired color information out of a document at a high threshold level and can synthesize these color information. As a result, the clear images can be recorded with no mixture of noises.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document registration apparatus capable of reading and registering a portion of different colors in a document without losing the colors at once.

[0002]

2. Description of the Related Art Conventionally, there is a document such as a credit application form in which a part of a form is colored in red or green, and a document recorded with a blue pen or color-recorded with pressure-sensitive paper. . When such a document is read by a single image reading device, for example, the form cannot be read and drops out.

However, in general, these three items are required for document recording.
Not only are colors other than colors used, but some colors may be recorded lightly. In such a case, in the conventional color scanner, it is necessary to adjust the output levels of the three image reading elements in order to clearly read the light color. However, in this case, the reading sensitivity for other colors also changes. .

For this reason, when some of the plurality of colors are light, it is difficult to clearly read all the colors, and it is troublesome to adjust the color balance. Further, when the color balance is changed, the faithful color reproducibility originally required for the color scanner cannot be obtained.

Therefore, it has been conventionally practiced to prepare a color filter corresponding to a color used for a document and read each color separately by one image reading element. For example, in the case of a document recorded in two colors, the filter is changed for each color and the document is read twice with the color characteristics corresponding to the color of the document.

[0006]

[Problems of the prior art] However, when a document is read twice, not only the recording work is performed twice, but also the read image information is associated and stored, and the information is processed by combining them again. Also had a problem.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and when a document includes portions of different colors, the portions of different colors can be surely read and registered, and the reading operation can be performed. An object of the present invention is to provide a document registration device that is simple and efficient.

[0008]

According to the present invention, an object of the present invention is to provide a plurality of image reading devices for reading substantially the entire area of a document recorded in a plurality of colors with color characteristics corresponding to the plurality of colors, and a plurality of image reading devices. This is achieved by a document registration device including an image processing device that synthesizes image information read by the device and a storage device that stores the synthesized image information. Here, it is preferable that at least one of the plurality of image reading devices can select color characteristics.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining the configuration of a scanner unit of an embodiment of the document registration apparatus of the present invention, FIG. 2 is a schematic diagram of a document to be read, and FIG. 3 is an embodiment of the document registration apparatus of the present invention. It is a figure explaining the structure of.

In FIG. 2, 10 is a document to be read for registration, and 12 is a form printed in red in this document. The required entry 13 is entered here in blue. In addition, it may be printed in black.

In FIG. 1, reference numeral 14 is a conveying device for the document 10.
The document 10 is conveyed at a constant speed in the direction of the arrow. Reference numeral 16 denotes a first image reading device that reads the entire area of the document 10, and includes an optical system 18 and an image reading element 20 so as to read the form of the document 10.

The image reading element 20 reads the document 10 pixel by pixel like a CCD, and may be a one-dimensional element or a two-dimensional element. Since it is transported, a one-dimensional element is used.

Since the image reading element 20 has spectral characteristics different from those of the human eye, the image reading element 20 can be clearly seen by the eyes.
Cannot read all colors in high contrast. For example, if the image reading element 20 having low sensitivity to red or green tries to read red or green information, even a slight noise of other colors is read, which is not preferable. Therefore, the image reading element 20 used here has a high sensitivity to red, which is the color of the form of the document 10.

Reference numeral 22 is a second image reading device for reading the entry 13 of the document 10, and includes the optical system 24 and the image reading element 2.
6 and 6. The image reading device 22 has a color characteristic different from that of the first image reading device 16. For example, when the color of the entry 13 is light blue by a pen or pressure sensitive paper, a red filter 28 is inserted.

When passing through the red filter 28, light blue information can be read with high contrast, while red information is low in contrast and hardly read. Therefore, the first image reading device 16 and the second image reading device 22
And can read information of different colors of red and blue with high contrast.

Since an example using a red color filter is shown here, it is suitable for a document in which a document having a red form is filled in with blue, but an appropriate color characteristic is obtained depending on the color used in the document to be read. You can select and use the filter of.

In principle, the first image reading device 16 and the second image reading device 22 are image reading devices that read the entire area of the document 10, and are installed so that images at the same position are read simultaneously or in synchronization. .

It is preferable that both the image reading devices 16 and the image reading device 22 have the same reading target position and are synchronized with each other.
Pixel processing may be performed so that both images read from the same position of the document 10 can be combined and stored in a storage device.

In registering a document, when the document 10 to be registered is set in the scanner section 30 and a reading instruction is given from the keyboard 32 or the like, the document 10 is conveyed by the conveying device 14 according to a command from the CPU 34. At this time, the first image reading device 16 sequentially reads the form of the document 10 over substantially the entire width, and the second image reading device 22 sequentially reads the entries 13 other than the form of the document 10.

When the first image reading device 16 and the second image reading device 22 have the same reading target position and the same pixel density, the image information read by both the image reading devices 16 and 22 is read. The image processing device 36 synthesizes the image signals at the same position and stores them in the storage device 38.

The image processing device 36 may be a circuit having the following functions, for example. After the image reading device 16 and the image reading device 22 appropriately amplify the output image information based on the color sensitivity characteristics of the read image reading elements 26 and 20,
The image information is A / D converted for each pixel and then multivalued, and the sum of the multivalued signals of the corresponding pixels is obtained.

As described above, since the first image reading device 16 and the second image reading device 22 can read and combine desired color information in the document with a high threshold value, a clear image can be recorded without noise. To be done.

When the document image recorded in this manner is instructed to be searched by inputting a document name or the like from the keyboard 32, the image display device 4 displays it as an image with high contrast.
It is displayed at 0 and is output to the printer 42 as needed.

In this embodiment, two image reading devices 16,
However, when the number of colors included in the document is three or more, it is preferable to provide three or more image reading devices having different color characteristics.

[0025]

According to the first aspect of the present invention, a document having various colors is read at once by an image reading device having a plurality of color characteristics corresponding to each color of the document, and these are combined and registered. The parts of different colors can be clearly read and recorded, and since the reading can be done only once, the document registration work is easy and efficient.

According to the second aspect of the present invention, the color characteristics of at least one image reading device can be selected. Therefore, it is easy to deal with the case where the color of the form or the entry is changed.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration of a scanner unit of an embodiment of a document registration apparatus of the present invention.

FIG. 2 is a schematic diagram of a document to be read.

FIG. 3 is a diagram illustrating a configuration of an embodiment of a document registration apparatus of the present invention.

[Explanation of symbols]

 10 document 12 form 13 entry 16 first image reading device 22 second image reading device 28 filter 36 image processing device 38 storage device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 1/21 2109-5C 1/387 4226-5C

Claims (2)

[Claims] 1. A plurality of image reading devices for reading substantially the entire area of a document recorded in a plurality of colors with color characteristics corresponding to the plurality of colors, and image information read by the plurality of image reading devices. A document registration device comprising: an image processing device for combining and a storage device for storing combined image information. 2. The document registration device according to claim 1, wherein at least one of the plurality of image reading devices can select a color characteristic according to a color recorded in the document.