JP3025512B2 - Image input device using flat scanner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image input apparatus using a flat scanner.

2. Description of the Related Art Conventionally, there has been known a flat scanner that inputs an image of a desired range of a document at a desired angle using a CCD line sensor (hereinafter, referred to as a line sensor). In a flat scanner, a document table on which a document is placed and a line sensor are relatively rotatable, and the moving speed and the moving width of the line sensor are controllable. Rotate the document table or line sensor according to the angle, and adjust the moving speed of the optical system or line sensor according to the magnification specified on the layout designation sheet,
Further, the image of the document can be input by controlling the moving width of the line sensor in the trimming range.

There are two methods of loading originals: placing each original directly on the original table of the flat scanner according to the reference line displayed on the original table or its equivalent, the reference line displayed on the original holder or A method is known in which a document is set on a document holder one point at a time in accordance with the equivalent, and then the document holder is placed on a document table.

In the case of inputting a large number of documents, it is also known that a plurality of document holders are stored in a rack and the rack is set on a flat scanner. The document holders are pulled out one by one to sequentially input images.

[Problems to be Solved by the Invention] However, there are the following problems in image input in the conventional flat scanner. That is, when a document is mounted on the document table or the document holder, reference work such as cleaning of the document holder and positioning of the document on the document table or the document holder must be performed for each document, so that a large number of documents are input as images. In some cases it was very annoying.

In addition, when using the document holder, the preparatory work that can be performed in advance depends on the number of document holders held, and in order to input a large number of documents, many document holders are held or image input is completed. It is necessary to repeat the cycle of removing the original from the original holder and preparing the next original.However, the original holder is expensive and specially coated so that Newton rings do not occur. Holding a large number of document holders is a problem in terms of cost, and repeating the preparation work as in the latter case is troublesome as in the above-described problem.

Further, in printing plate making, plate making is generally performed in units of pages, and one page generally includes several originals. Therefore, the plate making operation is usually performed on a page basis.When a document is mounted on a document table or a document holder one point at a time as in the case of image input using a conventional flat scanner, when returning to a page unit, There has also been a problem that the arrangement becomes very troublesome.

Further, it is common practice to align the color tones of a plurality of originals within the same page or several pages. In this case, it is necessary to observe all or a part of the originals in advance to determine the color tones. However, there has been a problem that it is difficult to adjust and unify the color tone by the conventional method of inputting an image of a document one point at a time.

The above-mentioned problems are essentially caused when the manuscript is input one point at a time, and include the same problem when a plurality of manuscript holders are stored in the rack.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problem, and an object of the present invention is to provide an image input apparatus using a flat scanner capable of placing a plurality of documents at a time and inputting an image.

[Means for Solving the Problems] To achieve the above object, an image input apparatus using a flat scanner according to claim 1 includes an original table section and a line sensor section which are relatively rotatable. An image input device using a flat scanner including a flat scanner, a display unit, a digitizer, and a control device, wherein when a predetermined menu is selected by the digitizer, a line of the flat scanner is provided. Instructs the sensor unit to read the original at a predetermined magnification over the entire surface of the original table unit, displays the image of the original read by the line sensor unit on the display unit, and pastes the original on the screen of the display unit with a digitizer When the reference line and the reference position of the sheet are designated, the base of the document table is determined based on the designated reference line and the reference line of the document table previously recognized. The document table is rotated so that the reference line and the reference line specified by the digitizer are parallel, and trimming for each document is performed based on the reference line, reference position, and trimming range information for each document input from the digitizer. The range is determined, and the moving range of the line sensor unit is determined.

An image input device using the flat scanner according to claim 2, wherein the flat surface scanner includes a relatively rotatable original table unit and a line sensor unit, a display unit, a digitizer, and a control device. An image input device using a scanner, wherein when a predetermined menu is selected by the digitizer, the control device copies the document at a predetermined magnification over the entire surface of the document table with respect to the line sensor unit of the flat scanner. The reading of the original is instructed, the image of the original read by the line sensor is displayed on the display, and the position information of the origin, the reference line, and the trimming range of the original specified by the digitizer are displayed. Information, the position information of the feature points of the original image, and the position information of the origin on the screen of the display unit from the digitizer and the line corresponding to the reference line of the layout designation paper When position information and position information of a point corresponding to a feature point of the document image are input, the rotation angle, magnification, and trimming range of the document table of the flat scanner are determined based on the input position information, and the document is determined. The table unit is rotated by the determined rotation angle, and the line sensor unit is read at a speed corresponding to the determined magnification only in a portion of the determined trimming range.

[Operation and Effect of the Invention] According to the image input apparatus using the flat scanner of the present invention, it is possible to mount a plurality of documents on the document table or the document holder at a time. Alternatively, preparation work such as alignment of the original with the original holder can be greatly reduced.

In addition, it is possible to prepare for image input of a document regardless of the number of document holders held.

Further, since a plurality of originals can be collected in page units or several pages, it is easy to clean and return the originals to the original bag.

Furthermore, even when adjusting the color tone, another document can be viewed at the same time, so that the work becomes very easy.

[Example] Hereinafter, an example will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of an embodiment of an image input apparatus using a flat scanner according to the present invention, wherein 1 is a flat scanner, 2 is a document table section, 3 is a line sensor section,
4 is a control device, 5 is a memory, 6 is a display unit, 7 is a digitizer, and 8 is a data input line.

In the configuration shown in FIG. 1, the flat scanner 1 includes a document table section 2 on which a document is placed directly or mounted on a document holder, and a line sensor section 3 including a CCD line sensor and a drive circuit thereof. Further, the document table 2 and the line sensor 3 are relatively rotatable. In the following embodiments, the line sensor is fixed, and the document table 2 is rotated by a motor (not shown) or the like.

The control device 4 includes a microprocessor, an internal memory such as a ROM and a RAM, and instructs a rotation angle to the document table unit 2 and a moving speed to the line sensor unit 3 based on magnification information and trimming range information. Then, an instruction to read a document image is given by instructing a moving range, image data is taken in from image data obtained as a result of reading based on trimming range information, and stored in the memory 5. Further, the control device 4 displays the input image obtained by reading on the screen of the display unit 6 by the menu selection by the digitizer 7. Information such as angle information, magnification information, and trimming range information of the document required for image input is input from the digitizer 7 or the data input line 8. Furthermore,
The control device 4 includes a digitizer 7 or a data input line 8.
Performs density adjustment, color tone adjustment, and the like of image data based on the setup information input from.

The memory 5 is for storing input image data, and is composed of a large-capacity storage device such as a magnetic disk and a RAM.

The display unit 6 includes a display device capable of displaying images using a color CRT display device or the like.

The digitizer 7 selects a predetermined menu, position information of a desired position of a display image using a cursor displayed on the screen of the display unit 6, and a desired position of an allocation designation sheet directly placed on the digitizer 7. Can be input.

The data input line 8 controls image input information such as angle information, magnification information, and trimming range information of a document on-line from a document-attached sheet creating apparatus to be described later or off-line via a suitable recording medium such as a floppy disk. This is for inputting to the device 4.

Next, image input using the image input device using the flat scanner shown in FIG. 1 will be described. First, a plurality of originals are placed on the original table 2. For this purpose, it is preferable to use a document sticking sheet created by the scanner document sticking sheet creation device proposed by the present applicant in JP-A-61-295758. Details are omitted,
According to the scanner document sticking sheet preparation apparatus, as shown in FIG. 2, the reference line 301, the document No. 300N, the magnification value 300m expressed in%, the document sticking line 302, and the trimming indicating the trimming range. An original attachment sheet on which the line 303 is drawn can be obtained. In FIG. 2, it is needless to say that the angle of the original attachment line 302 with respect to the reference line 301 is equal to the angle between the image of the original and the reference line of the layout designation sheet. Further, the document sticking sheet creating apparatus stores position information of a trimming range of each document from a reference point (not shown) of the document sticking sheet, and magnification information of each document.

When the original attachment sheet as shown in FIG. 2 is obtained, each original is attached along the original attachment line 302 and is placed on the original table 2 of the flat scanner 1. At this time, if the original pasting sheet is made of a transparent sheet, the original can be pasted as it is, but if the original pasting sheet is made of an opaque sheet, the original can be pasted along the original pasting line 302. Cut out and paste the original. Also, when placing the original affixed sheet on the original table unit 2, the reference line 301 of the original affixed sheet is directly placed so as to coincide with the reference line displayed on the original table unit 2 or an equivalent thereof. Alternatively, the original attachment sheet may be placed on the original holder after being attached to the original holder.

Next, rotation angle information, magnification information, and trimming range information of the document table unit 2 necessary for image input are input to the control device 4, and these information are next determined according to the placement state of the document affixed sheet. Can be performed as follows.

First, the document is placed in such a state that the reference line 301 of the original affixed sheet coincides with or is parallel to the reference line of the original table unit 2 and the reference position of the original affixed sheet matches the reference position of the original table unit 2. In this case, since the angle of each original is determined by the original affixed sheet and the original table 2 does not need to be rotated, the menu of the digitizer 7 sets 0 ° as the rotation angle information of the original table 2. To instruct. On the other hand, regarding the magnification information and the trimming range information, the magnification information and trimming line
Can be input from the data input line 8 on-line or off-line via a suitable recording medium such as a floppy disk. Further, as image input information, in addition to the above information, setup information relating to color separation and the like are also required, and this information is also input to the control device 4 through the data input line 8 or the menu of the digitizer 7.
When necessary information is input in this way, the control device 4
Indicates a rotation angle of 0 ° to the document table section 2,
For the line sensor unit 3, a moving speed according to the magnification of each document and an image data capturing range according to the trimming range are instructed. Further, the control device 4 performs predetermined image processing such as density adjustment and color tone adjustment on the image data obtained as a result of reading based on the setup information. As a result, the image of the document can be input in a desired setup state.

Next, when the reference line and the reference position of the document pasting sheet do not match the reference line and the reference position of the document table section 2, first, a predetermined menu is selected by the digitizer 7 so that the document table section 2 is displayed. The entire image is read at a predetermined magnification, for example, 100%, the read image is displayed on the display unit 6, and the digitizer 7 designates the reference line and reference position of the document pasting sheet on the screen of the display unit 6. I do. That is, when a predetermined menu of the digitizer 7 is selected, the control device 4 instructs the line sensor unit 3 to read an image at a predetermined magnification over the entire surface of the document table unit 2 and reads the image. The obtained image is displayed on the display unit 6. First, the document table 2 is rotated so that the reference line of the document table 2 and the reference line specified by the digitizer 7 are parallel to each other. Then, since the control device 4 recognizes the reference position of the document table unit 2, it determines the difference between the reference position of the document table unit 2 and the reference position of the document sticking sheet specified by the digitizer 7. Next, the control device 4 determines the trimming range by adding or subtracting the above difference to or from the trimming range information input in the same manner as described above, and obtains the moving range of the line sensor unit 3. The magnification information and the setup information regarding the color separation are the same as described above.

As described above, when the original pasting sheet created by the scanner original pasting sheet creating apparatus is used, not only can many originals be placed on the original table unit 2 at one time, but also the image input operation is extremely difficult. Will be easier. However, in the above-mentioned original attachment sheet, the original may be attached with an inclination as shown in FIG. 2, so that the number of originals to be attached is larger than the maximum number of points that can be placed on the original table 2. Will also be less. In this case, a document pasting sheet prepared so that a document can be pasted at a high density from the scanner document pasting sheet producing apparatus described above is used. Then, magnification information, angle information, and trimming information for each document are input online or offline from a scanner document sticking sheet preparation device (not shown) via the data input line 8. Note that this angle information is an angle from a state where the document is attached to the document attachment sheet.

As a result, the control device 4 rotates the document table unit 2 based on the angle information and controls the reading range of the line sensor unit 3 based on the trimming information, so that image input of a plurality of documents is automatically performed sequentially. be able to.

For high-density attachment of a document, it is preferable to use a document attachment sheet created by the above-described scanner document attachment sheet creation apparatus. However, as shown in FIG. It can be carried out. 8 sheets of originals 10 ₁ to 10 ₈ are mounted with a minimum clearance in the third diagram. In this case, each document may be affixed to an appropriate sheet or may be directly placed on the document table 2.

In such a case, even if the magnification information, the angle information, and the trimming range information for each document are obtained in advance by a well-known method, they cannot be directly used except for the magnification information. This is because the angle of the original placed on the original table 2 is completely independent of the angle specified on the layout designation sheet. Therefore, first, in the same manner as described above, first, a predetermined menu is selected by the digitizer 7 to read over the entire document table unit 2 at a predetermined magnification, for example, 100%. It is displayed on the display unit 6. Now, reading is performed in the state of FIG. Of the image displayed on the display unit 6, the image 1 of the document 10 ₁
Assume that ₁₁ is as shown in FIG. Next, the operator
Assignments paper corresponding to the document 10 ₁ as shown in FIG. 5 1
3 is placed on the digitizer 7, and the position information of the origin O, the position information of any two points S ₁ and S ₂ on the reference line such as the printing plate line H, and the points having the features in the image (hereinafter referred to as feature points) 2)
The digitizer 7 inputs the position information of the points R ₁ and R _{2 and} the position information of the vertices A, B, C and D of the rectangle indicating the trimming range. Next, on the image displayed on the screen of the display unit 6, the operator determines the position information of the origin O ', the reference line of the layout designation sheet 13, that is, the reference line 12 corresponding to the plate surface line H.
The digitizer 7 inputs position information of arbitrary two points P ₁ and P ₂ on the reference line 12 and points Q ₁ and Q ₂ corresponding to feature points R ₁ and R ₂ of the image. Note that it is clear that the reference line 12 only needs to coincide with the main scanning direction or the sub-scanning direction of the line sensor unit 3.

When the input of the position information is completed, a predetermined menu is selected to instruct the control device 4 to perform a predetermined calculation, and the rotation angle, magnification, and trimming range of the document table section 2 are calculated. The rotation angle of the document table 2 is determined by the relationship between the straight line connecting S ₁ and S ₂ and the straight line connecting R ₁ and R ₂ on the layout designation paper 13 and the straight line connecting P ₁ and P ₂ on the document image. It can be calculated from the relationship with the straight line connecting Q ₁ and Q ₂ , the magnification can be calculated from the distance between R ₁ and R ₂ and the distance between Q ₁ and Q ₂ , and the trimming range Can be calculated from the relative positional relationship of A, B, C, and D to R ₁ and R ₂ and the magnification.

The above operation is performed on all the originals placed on the original table unit 2 to obtain information on the rotation angle, magnification, and trimming range of the original table unit 2 for each original. Also,
The setup information of each document is input through the digitizer 7 or the data input line 8 as described above.

When the input of all information necessary for image input is completed as described above, the operator instructs the start of image input by selecting a menu. Thus, the control unit 4, first, the original of the document No.1, for example, reads information about the document 10 ₁ from the internal memory, it is rotated by resultant angle calculated original table 2, the line sensor unit 3 At a speed corresponding to the magnification value, only the portion within the trimming range is read, and the obtained image data is stored in the memory 5.
The control device 4 performs this operation for all the originals.

As described above, it is possible to automatically and sequentially input images of a plurality of originals.

As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, A various deformation | transformation is possible. For example, in the above embodiment, the document table unit 2
Is rotated, but it is obvious that the document table section 2 may be fixed and the line sensor section may be rotatable. The trimming range for inputting an image may be set to be slightly larger than the trimming range input in advance in consideration of the fact that correction is performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of the configuration of an image input apparatus according to the present invention, FIG. 2 is a diagram showing an example of a document sticking sheet obtained by a scanner document sticking sheet creating device, and FIG. FIGS. 4 and 5 are diagrams illustrating an example in which the originals are placed at a density, and FIGS. 4 and 5 are diagrams for explaining the calculation of the rotation angle, magnification, and trimming range of the document table unit. FIG. 4 is displayed on the display unit. FIG. 5 is a diagram for explaining input of position information on a document image, and FIG. 5 is a diagram for explaining input of position information on a layout designation sheet. DESCRIPTION OF SYMBOLS 1 ... Flat scanner, 2 ... Original table part, 3 ... Line sensor part, 4 ... Control device, 5 ... Memory, 6 ...
Display unit 7 Digitizer 8 Data input line

Claims (2)

(57) [Claims] 1. An image input apparatus using a flat scanner including a relatively rotatable original table unit and a line sensor unit, a display unit, a digitizer, and a control unit. When a predetermined menu is selected by the digitizer, the control device instructs the line sensor unit of the flat scanner to read the original at a predetermined magnification over the entire surface of the original table unit, and the line sensor unit When the image of the read document is displayed on the display unit, and the reference line and reference position of the document pasting sheet are indicated on the screen of the display unit by the digitizer,
The document table is rotated based on the designated reference line and the previously recognized reference line of the document table so that the reference line of the document table and the reference line designated by the digitizer are parallel. A flat line scanner that determines a trimming range for each document based on a reference line, a reference position, and trimming range information for each document input from a digitizer, and determines a moving range of the line sensor unit. An image input device using the same. 2. An image input apparatus using a flat scanner including a document table unit and a line sensor unit which are relatively rotatable, a display unit, a digitizer, and a control unit. When a predetermined menu is selected by the digitizer, the control device instructs the line sensor unit of the flat scanner to read the original at a predetermined magnification over the entire surface of the original table unit. The image of the scanned document is displayed on the display unit. From the digitizer, the position information of the origin of the layout designation sheet corresponding to the document, the position information of the reference line, the position information indicating the trimming range of the document, the position information of the characteristic points of the document image Is input and the digitizer responds to the position information of the origin on the screen of the display unit, the position information of the line corresponding to the reference line of the layout designation paper, and the feature points of the original image When the position information of the point to be input is input, the rotation angle, magnification, and trimming range of the original table section of the flat scanner are determined based on the input position information, and the original table section is rotated by the determined rotation angle. An image input device using a flat scanner, wherein a line sensor section is read at a speed corresponding to the determined magnification only in a portion of the determined trimming range.