JPH057802Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an image processing device that scans an original document using a photoelectric conversion element such as an image sensor, converts the scanned image into an electrical signal, and then performs processing such as image editing, and more particularly to a device that indicates the position of the original document to be processed.

[Prior Art] A typical copying machine directly copies the original image by directly exposing a photoreceptor to light reflected from the original, and then developing and transferring it.
2. Description of the Related Art A system has been developed that scans a document with an image sensor or the like, converts it into an electrical signal, stores it in a storage device as image information, performs predetermined processing or editing, and then outputs it as an image. For example, it is possible to designate a part of the image information obtained by scanning and delete, move, or copy that part.

To specify the range for this image processing,
A device called a digitizer is used to position the tablet at a specified location on the table and detect the position of the tablet electrically or electromagnetically to read the coordinates of the document or place the document on the scale. The operator visually reads the coordinates and inputs the coordinates directly using a numeric keypad or the like. Also, the image once read
displayed on a CRT (cathode ray tube) display,
It is also known that a cursor, for example, is displayed on the screen of a CRT, and a position can be specified on the screen and the processing result can be checked in an interactive manner.

[Problem that the invention attempts to solve]

However, the method using a digitizer is expensive because it requires special equipment, and the method of inputting the coordinates read with a scale as numerical values is time-consuming and has the problem of inaccurate readings. Furthermore, the method of interactively specifying coordinates using a CRT display also requires expensive equipment and has the problem of increasing the size of the equipment.

The present invention was devised to solve the above-mentioned problems, and it is an object of the present invention to provide an inexpensive document position indicating device that can specify coordinates accurately and quickly.

[Means and actions for solving problems]

The present invention has a storage device that stores image information obtained by scanning a document with a photoelectric conversion element, and performs predetermined image processing on the image information in the storage device corresponding to a specified position on the document. In an image processing apparatus that performs image processing, an image display section that is supplied with image information from a photoelectric conversion element or a storage device and partially displays an image of a document, and an image display section that displays a portion of the document displayed on the image display section in the scanning direction. a pointer control means for displaying a pointer on the image display unit that moves in a direction perpendicular to the scanning direction; and a pointer control means for instructing the movement direction of the display portion by the scan control means and the movement direction of the pointer by the pointer control means. The present invention is characterized in that it is provided with a cursor key and a position detecting means that is supplied with a signal from the cursor key and detects the position on the document indicated by the pointer.

In the document position indicating device of the present invention, an image of the scanned document is partially displayed on the image display section, and a pointer is also displayed, and the display position and pointer are moved by operating the cursor keys to indicate the position. conduct.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an image editing device equipped with a document position indicating device according to the present invention, FIG. 2 is a sectional view of the scanning section, FIG. 3 is a plan view of the console, and FIG. 4 is a plan view of the cursor keys. FIG. 5 is a block diagram showing the control circuit of the document position indicating device, FIG. 6 is a plan view of the document to be processed, and FIGS. 7A, B, and C are, respectively,
FIGS. 8A to 8E, which are plan views of a display section partially displaying different parts of a document, are explanatory views showing the operation of specifying coordinates by the document position indicating device according to the present invention.

In the figure, 1 is an image editing device used in a copying machine, 2 is a scanning section, 3 is a platen cover,
4 is a console, 5 is an image display section, 6 is a registration guide, P is a document, 7 is an exposure lamp,
8 is a reflector, 9a, 9b, 9c are mirrors, 1
0 is a lens, and 11 is a CCD (charge coupled device) as a line image sensor.

As shown in FIG. 3, the console 4 includes a numeric keypad 41 for setting the number of copies, a number display device 42, a stop key 43, a start key 44, a trimming key 45, a masking key 46, and a cursor key 4.
7th grade will be provided. As shown in FIG. 4, the cursor keys 47 are comprised of an up cursor key 47a, a down cursor key 47b, a left cursor key 47c, a right cursor key 47d, and a cursor position determination key 47e.

The image display section 5 uses an LCD (liquid crystal display) device or a VFD (fluorescent display) device that can display dots, and its display size is large enough to accommodate one general character. Use a portrait size that can be displayed, for example, 10 mm wide and 257 mm long (A4 length).

When the image display section 5 is required to have a resolution of 300SPi (12 dots/mm), the image display section 5 should be
120 dots (12 dots x 10mm), 3084 dots in the length direction (12 dots x 257mm), i.e. overall,
It is necessary to have a display element of 370,080 dots (120 dots x 3084 dots), but if the purpose is only to indicate the editing position, it is possible to display a display with a dot density of 1/2 to 1/4 in the width and length directions, respectively. , the operator can understand text or pictures. For example, when the dot density is set to 1/4 in both the width and length directions, 30 dots (120 x 1/4) in the width direction and 771 dots (3084 x 1/4) in the length direction.
1/4), so the total number of elements is 23,130, which can significantly reduce the number of elements.

FIG. 5 is a block diagram showing the control circuit of the document position indicating device according to the present invention.
1 is an A/D conversion circuit to which a signal from the CCD 11 is supplied; 52 is a shading circuit; 53a to 5;
Reference numeral 3c denotes first to nth line buffers in which image information for one line in the main scanning direction of the document P is stored, and 5 is an LCD (liquid crystal) display device connected to line buffers 53a to 53c and displaying the contents. 54 is a buffer control circuit;
5 is a scanning stepping motor for moving the optical system such as the exposure line 7, reflector 8, and mirrors 9a to 9c of the scanning unit 2; 56 is a scanning control circuit that controls the rotation direction and amount of rotation of the stepping motor 55; , 57 is a pointer control circuit for displaying a pointer at a predetermined location on the image display section 5, 58 is a cursor position information detection circuit, and 59 is an editing control circuit.

Note that the line buffers 53a to 53c are
Assuming that the width of the image display section 5 is 120 dots,
A line memory for 120 lines is required, and assuming that 30 dots are one quarter of that, a line memory for 30 lines is required.

Next, the operation of the document position indicating device according to the present invention will be explained.

The original P is exposed by the exposure lamp 7 of the scanning section 2, and the reflected light from the original P is focused onto the CCD 11 by the mirrors 9a to 9c and the lens 10.
The CCD 11 is electrically main-scanned in its longitudinal direction and converts one line of the original scanned image into an electrical signal.
Further, an exposure lamp 7, a reflector 8, a mirror 9a
By moving the optical systems such as ~9c with a stepping motor 55 (not shown in FIG. 2), the original P is sub-scanned while being exposed to light, and the original P is
The entire surface of the image is scanned. The analog output voltage from the CCD 11 is converted into a digital signal by an A/D conversion circuit 51 and supplied to a shading circuit 52. In the shading circuit 52,
The amount of light at both ends of the document P is corrected, and the electric signal is converted into a binary signal by separating black and white using a predetermined threshold value.

The black and white binary signal is transmitted through a plurality of line buffers 53a to 53c corresponding to the number of dots in the width of the image display section 5.
are stored sequentially. These line buffers 53
a to 53c are constituted by line memories having a capacity for one line of scanning in the main scanning direction, that is, the longitudinal direction of the CCD 11, and the contents of each line buffer 53a to 53c are directly supplied to the image display unit 5, A part of the original image scanned is displayed vertically.

Right now, right cursor key 47d on console 4
Or if you press the left cursor key 47c,
A signal from the cursor key 47 is supplied to the scanning control circuit 56 via the buffer control circuit 54, the rotation of the scanning stepping motor 55 is controlled, and the scanning position of the original P is moved in the horizontal direction. At the same time, the signal from the cursor key 47 is sent to each line buffer 53a via the buffer control circuit 54.
-53c, and the contents of each line buffer 53a-53c are rewritten with new scanning information signals following the movement of the scanning position. Therefore, when a document P as shown in FIG. 6 is scanned, the image display section 5 displays a scrolling image of the area being scanned by the scanning section 2, as shown in FIG. 7 A, B, and C. The user can designate any position on the document P while visually confirming it.

Now, let us consider a case where a portion surrounding the letter "D" of a document P shown in FIG. 6 is specified.

Right cursor key 47d or left cursor key 4
7c, when the optical system is scanned and the desired position is displayed on the image display unit 5, that is, when the letter "D" is displayed as shown in FIG. 7B, press the right cursor key 47d or the left cursor key. Scanning is interrupted by releasing 47c.

FIG. 8A shows details of the display at this time, in which the letter "D" is displayed in the center of the image display section 5, and a pointer Q for detailed instructions is displayed above the vertical line in the center. Note that the position of the pointer Q can be determined by pressing the up cursor key 47a or the down cursor key 47b, and a signal from the cursor key 47 is supplied to the image display unit 5 via the pointer control circuit 57. Move up and down on the center vertical line. Note that if this pointer Q is displayed while blinking, it will be easier to distinguish.

In the state shown in FIG. 8A, the left cursor key 47c
When you press , the scanning position moves to the left, so the image on the image display section 5 moves to the right, and the letter "D" is displayed closer to the right as shown in FIG. 8B. Release your hand in this state.

Next, press the down cursor key 47b to move the pointer Q downward, and when it is located at the upper left of the letter "D" as shown in FIG.
Let go of 7b. When the cursor key position determination switch 47e is pressed to specify the position, the coordinates at this time are detected by the cursor position information detection circuit 58 and stored in the editing control circuit 59.

At this time, the coordinates in the horizontal direction can be determined by detecting the signal from the cursor key 47 and the signal from the buffer control circuit 54, and the coordinates in the vertical direction can be determined by detecting the signal from the pointer control circuit 57. be able to.

Next, when the right cursor key 47d is pressed, the scanning position moves to the right, so the image on the image display section 5 moves to the left, and the letter "D" is displayed closer to the left as shown in FIG. 8D. In this state, let go of your hand.

Next, press the down cursor key 47b to move the pointer Q downward, and when it is located at the lower right of the letter "D" as shown in FIG.
Let go of 7b. Here, when the cursor position determination switch 47e is pressed again to specify the position,
The coordinates at this time are the cursor position information detection circuit 58
is detected and stored in the editing control circuit 59.

By the above-described operation, the coordinates of the two points are specified, so it is possible to specify the rectangular range surrounding the letter "D" shown by the broken line in FIG.

Therefore, according to the present invention, the right cursor key 4
7d or the left cursor key 47c to scroll the partial document image displayed on the image display section 5 in the left-right direction, and press the upper cursor key 47a or the lower cursor key 47b to scroll the partial document image displayed on the image display section 5. Displayed pointer Q
The position on the document can be quickly and accurately specified by a simple key operation of moving the cursor up and down.

In addition, the editing control circuit 59 performs predetermined image processing based on these specified ranges and input from the trimming key 45 or the masking key 46.
Make edits.

When editing is completed, the number of copies to be made is set using the numeric keypad 41, and then the start key 44 is pressed to obtain edited copies.

Further, according to the present invention, the read image can be confirmed prior to editing work, and after that, the user can specify the editing location while visually confirming it. Furthermore, if the signal after editing or image processing is displayed on the image display section 5, the effect after editing or image processing can be confirmed.

In the above-described embodiment, the image display section 5 is moved by mechanically moving the position of the optical system.
I scrolled the image displayed on the page, but the original P
Once all images are stored in the page memory, the images displayed on the image display section 5 can be scrolled by supplying the contents of the page memory to the image display section 5 while sequentially changing the read address of the page memory. You can also do so.

Further, in the above-described embodiment, the image display section 5 is arranged vertically, but it may be arranged horizontally. In this case, the displayed image of the image display section 5 is scrolled in the vertical direction. Move pointer Q left and right.

[Effect of idea]

As described above, according to the present invention, the following effects can be obtained.

(i) Since only a portion of the document needs to be displayed, the number of display elements can be reduced, and an inexpensive display device can be used.

(ii) Accuracy similar to that of a CRT display can be obtained.

(iii) Positions can be specified quickly with simple cursor key operations.

(iv) Since the part of the document where the position is to be specified is displayed as an image together with a pointer, the position can be specified accurately.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an image editing device equipped with a document position indicating device according to the present invention, FIG. 2 is a sectional view of the scanning section, FIG. 3 is a plan view of the console, and FIG. 4 is a plan view of the cursor keys. FIG. 5 is a block diagram showing the control circuit of the document position indicating device, FIG. 6 is a plan view of the document to be processed, and FIGS. 7A, B, and C are, respectively,
FIGS. 8A to 8E, which are plan views of a display section partially displaying different parts of a document, are explanatory views showing the operation of specifying coordinates by the document position indicating device according to the present invention. DESCRIPTION OF SYMBOLS 1... Image editing device, 2... Scanning unit, 3... Platen cover, 4... Console, 5... Image display unit, 7... Exposure lamp, 11... CCD, 47
...Cursor key, 53a to 53c...Line buffer, 56...Scanning control circuit, 57...Pointer control circuit, 58...Cursor position information detection circuit, 59...Editing control circuit, P...Manuscript, Q...
pointer.

Claims (1)

[Scope of utility model registration request] It has a storage device that stores image information obtained by scanning a document with a photoelectric conversion element, and performs predetermined image processing on the image information in the storage device corresponding to a designated position on the document. The image processing device includes an image display section that is supplied with image information from the photoelectric conversion element or the storage device and partially displays an image of the document, and a display portion of the document that is displayed on the image display section. scanning control means for moving in a scanning direction; pointer control means for displaying a pointer on the image display section that moves in a direction perpendicular to the scanning direction; and a moving direction of the display portion by the scanning control means and the pointer control means. cursor keys for instructing the moving direction of a pointer; and position detection means supplied with a signal from the cursor keys and detecting a position on the document indicated by the pointer. A document position indicating device in the device.