JPH08149367A - Image reading system and image reading method - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide an image reading device capable of directly moving a roll-shaped film having a large number of frames to read an image. In particular, the purpose is to facilitate setting of the origin position of the film. [Structure] Photographic film (100) or optical system (10, 1)
In the scanner (4) which reads the image of the film while moving 1) relatively, the read image (70) is displayed on the display 50 so that the operator can indicate the origin position of the film with the arrow 61. To

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document image reading device (hereinafter referred to as a scanner). In particular, when reading a roll-shaped film, only the frames (frames on which image information is recorded) taken are read and displayed on the monitor, and the unexposed portions between the frames are not displayed on the monitor.

[0002]

2. Description of the Related Art A conventional photographic film scanner is disclosed in Japanese Patent Laid-Open Nos. 3-14581 and 5-244349.
Some are disclosed in Japanese Patent Publication. These scanners
A film mount (one film frame held by an outer frame made of plastic or the like) is placed on a carriage, and the carriage is moved to read the image information in the frame. In the case of strip film for 6 frames,
First, put the strip film in the film holder, and set the piece you want to read in alignment with the aperture of the film holder. Then, the image information in the frame is read by placing the film holder on the carriage and moving it.

Further, in Japanese Patent Laid-Open No. 5-75922,
A scanner is disclosed in which a magnetic layer is provided on a film and magnetic information such as a frame number can be read at the same time as image information on the magnetic layer. Although this scanner is a roll of film, it can recognize the reading start position because it has magnetic information such as frame numbers.

[0004]

However, the image information of a roll film having a large number of frames (for example, 24 frames) without a magnetic layer and the like cannot read arbitrary frames by the above-mentioned scanner. Even if the document itself is moved directly and read continuously, the size of one frame is not clear like the aperture of the film mount or film holder, so the position where the image is read and the document are aligned. Difficult to do.

Further, the positional relationship between the image reading device and the document may be shifted due to the slip between the film feeding roller and the film during the reading. If there is a frame number on the magnetic layer, it can be confirmed even if there is slippage, but if the frame number of the film cannot be recognized, the amount of misalignment will increase in accordance with the film feed amount. Further, even when a film is fed by an image pickup device such as a camera, the position where the film is exposed varies due to slippage and the like.

Therefore, the present invention is an image reading apparatus which reads an image by directly moving the roll-shaped film itself having no magnetic recording layer so that the image in the frame which has been exposed accurately can be read. The purpose is to provide a device.

[0007]

In order to achieve this object, the image reading system of the present invention comprises a photographic film (100) or an optical system (10, 11) in which a plurality of frames are photographed.
(4) a scanner (4) for reading the image of the photographic film while moving any one of them, a display (50) for displaying the image read by the scanner, and a display for indicating the origin position of the film. An origin position input section (51) for designating an arbitrary point (61) on the film image, and a control device (7) provided with an input section (51) for designating a reading start position based on the origin position. .

The image reading method of the present invention is C
The image of the photographic film read by the CD sensor (11) is displayed on the display (S502), and an arbitrary point on the original image displayed on the display is designated to indicate the origin position of the image of the photographic film (S505). The position where the reading of the image on the film is started is designated based on the origin position (S506).

[0009]

According to the invention of claim 1, the read image is displayed, and the operator can set the origin position on the displayed image. Therefore, the roll-shaped photographic film can be set at any position. Even if set, the reading start position will be accurate. According to the invention of claim 4, the read image is displayed, and the operator can set the origin position on the displayed image. Further, it is possible to detect the occurrence of film slippage during the main scan.

According to the eighth aspect of the present invention, since the film on which a plurality of frames have been photographed is read and the space between at least two frames is automatically detected, the operator can set the origin position without moving the inside of the frames. Can be recognized.

[0011]

EXAMPLES Examples of the present invention will be described. Figure 1
It is sectional drawing of the scanner which reads image information on a personal computer from roll-shaped photographic film using the scanner of this invention. The film entrance guide 1 on which the photographic film 100 is placed is attached to the film insertion opening 5 of the scanner body 4. The film outlet guide 3 for storing the photographic film 100 is attached to the film outlet of the scanner body 4. The scanner body 4 is connected to the personal computer 7 via a connector cable 16. The scanner body 4 is driven by operating an operation unit such as a keyboard 51 or a mouse 52 connected to the personal computer 7.

The photographic film 100 placed on the film entrance guide 1 is discharged from the film discharge opening 6 through the film insertion opening 5, the film moving guide 2 and the film exit guide 3 by the rotation of the roller described later. Will be done. The film moving guide 2 is divided into two parts from the film insertion port 5 to the position where the driving roller 13 and the pressing roller 14 are located and from the position where the driving roller 13 and the pressing roller 14 are located to the film discharge port 6.

The stepping motor 12 is controlled by an electric control board 15. The film 100 is sandwiched between the driving roller 13 and the pressing roller 14 and moved by the rotation of the stepping motor 12. The driving roller 13 and the pressing roller 14 are two rollers and two rollers so as to press the perforation portions on both sides of the film 100.
It consists of a shaft connecting two rollers. Further, the driving roller 13 and the pressing roller 14 are constituted by rubber rollers whose surfaces are processed with fluorine so that the film does not get caught in the rollers and become entangled.

With respect to a frame designated by the personal computer 7 (36 mm × 24 mm exposed in this embodiment),
The three-color LED 10 sequentially illuminates the film 100 with RGB light. Then, the transmitted light of the film 100 is photoelectrically converted by the CCD sensor 11 (for example, 2500 pixels) in which pixels are arranged in a one-dimensional direction (main scanning direction). The photoelectrically converted image signal is stored in a frame memory through a sample hold circuit, an amplifier circuit, an A / D circuit and the like (not shown).
In the moving distance (sub scanning direction) of the film 100, one pulse of the stepping motor 12 corresponds to one pixel of the CCD 11. Therefore, when one pulse is applied to the motor 12, the moving drive roller 13 rotates and the photographic film 100 moves. Is moved by one line. Then, the LED 10 sequentially emits RGB light. For example, when 4000 pulses are applied to the motor 12, two-dimensional color image information of 4000 × 2500 pixels can be obtained. The two-dimensional color image signal stored in the frame memory is transferred to the personal computer 7 via the electric control board 15 and the connector cable 16 and is transferred to the personal computer 7.
Is stored.

In FIG. 1, the scanner 4 and the computer 7 are separate units connected by a cable 16,
It may be integrated. Setting of the roll film 100 and image reading will be described with reference to the flowchart of FIG. The operator puts the driving roller 13 and the pressing roller 14 in a sandwiched state. Then, the film is inserted through the film insertion port 5 until the leading end of the film hits the driving roller 13. Then, the pressing roller 14 is separated from the driving roller 13 to provide a gap.
The operator inserts the leading end of the film into the back by a few millimeters and sandwiches the film between the drive roller 13 and the pressing roller 14 (step S501).

In step S502, the keyboard 5
1 or the mouse 52 or the like starts the reading origin position finding operation. First, an image of one line is read and displayed on the display 50 of the personal computer 7 (so-called prescan is performed). In step S503, it is confirmed whether or not a key input for instructing the stop is input from the keyboard 51 of the personal computer 7, and when the stop is input, the reading is ended. If not, the stepping motor 12 is driven to move the film by the number of lines designated in advance (step S504). The reason for moving by the number of lines designated in advance is that it is not necessary to move one line at a time and read with high resolution because the reading origin position is searched. Then, the image of one line is read again, and the reading is repeated until a stop instruction is input or the number of times reaches a predetermined number (step S503).

FIG. 3 shows a screen on which the operation of steps S502 to S504 (positioning of the reading origin) has been performed. At the bottom of the screen, "cursor shape", "scale", "enlargement", "reduction", "cancel", "reading start position", and "end" so that various operations can be performed with the function keys of the keyboard 51.
Is displayed. When the function key corresponding to the screen is pressed, the operation is executed.

In the film image 70, the first frame, the unexposed frame 102, and the second frame which are read from the middle are displayed. The reason why the first frame is displayed halfway is as follows. The amount of the operator pinching the leading edge of the film between the pressing roller 14 and the driving roller 13 varies each time the film is set. Therefore, if the operator inserts the leading edge of the film between the pressing roller 14 and the driving roller 13 and then starts reading as it is, the image of the first frame is displayed from the middle.

Therefore, it is desirable to read the image at the low resolution and position the origin before reading the image at the high resolution. If the reading origin is not set, even if an instruction is made to read the image of one frame of the fourth frame, the edge of the screen will be cut off and the unexposed portion of the space 102 will be displayed. In step S505, the operator looks at the film image 70 displayed on the display 50 of the personal computer 7 when the reading is stopped, while looking at the mouse 52 of the personal computer 7.
The reading origin position 71 (see FIG. 5) is designated and input by moving the mouse cursor 61 (see FIG. 3 and FIG. 4) which moves on the display 50 in conjunction with. In the present embodiment, if the central position 71 of the space 102 is designated, the exposed portion (inside the frame 101) can be displayed clearly on the display 50.

The shape of the mouse cursor 61 is illustrated by an arrow in FIGS. 3 and 4, but when the "cursor shape" is selected with the function key, a cross mark, a triangular mark or the like can be selected. If "enlarge" is selected with the function key, the image is enlarged as shown in FIG. This makes it easier to indicate the origin position. When "scale" is selected with the function key, a scaled ruler 62 is displayed in accordance with the film image 70. This makes it easier to indicate the origin position and is useful when it is necessary to set the distance between the frames as shown in FIG.

When the function key "reduction" is selected in the enlarged display shown in FIG. 4, the image returns to that shown in FIG. After instructing the reading origin position 71 and selecting "end" with the function key, the screen is switched to a screen for setting parameters required for image reading (FIG. 6).
In step S506, the parameters as shown in FIG. 6 are set. The reading start position is, for example, the first frame,
The number of pieces such as the second piece. Although not shown, you can specify the number of pixels to read, or the reading length such as mm,
Alternatively, the mouse cursor 61 may be used to point at the image 70 displayed on the display 50. Further, the operator inputs parameters necessary for image reading. For example, the size (number of lines, trimming size) of the read image, the read resolution (how many pixels to read one line), the number of read frames (the number of images), and the distance (mm) between the images are input. here,
10 μm per stepping motor pulse (1 pixel)
Suppose you move. In FIG. 6, the reading resolution is set to 6 pixels. Since the image size is set to read 600 lines in the horizontal direction, an image of 36 mm is read. The distance between the images is set to 38 mm. Therefore, the spaces between 2 mm are skipped.

It should be noted that each input error is corrected by using "Delete" on the keyboard 51. To delete all parameter settings, select “Cancel” with the function key to switch to the previous screen (FIG. 4) without setting parameters. "End" with the function key
If is selected, the parameters of the displayed contents are set.

In step S507, reading start is input to start reading (so-called main scan). If the reading start position is before the current position, the film is fed backward and brought to the reading start position. The designated frame is displayed on the screen every time one frame has been read. When the designated number of images have been read, "END" is displayed and the reading operation ends (step S508).

The image being read may be displayed while the image is being read even if the reading of one frame is not completed. Alternatively, an image having a size smaller than the reading resolution may actually be displayed by the image processing of the personal computer 7 and may be displayed as a thumbnail on the display 50 of the personal computer 7. Furthermore, in order to represent the current reading position, the number of frames or the read amount (mm) may be displayed. Furthermore,
Input of an instruction for interrupting or stopping the reading may be accepted.

On the other hand, the film feed error of the drive roller 13 or the film feed may not be accurately performed when the image is taken by an image pickup device such as a camera. In this case 1
The length 74 of 02 (FIG. 5) varies. Therefore, if an excessively large number of read frames (the number of images) is specified when setting the read parameters, the end of the screen is cut off and the unexposed part of the space 102 is displayed on the last frame.

Therefore, another embodiment capable of determining whether or not the image reading is accurately performed will be described with reference to FIGS. 7 and 8. The flowchart of FIG. 7 is designed to give a warning when the edges of the screen are cut and the unexposed portion of the frame 102 is displayed due to slippage between the roller and the film.

In step S601, after setting the origin position, the operator starts the reading start position, the image size (in FIG. 8, the image size can be selected from each trimming size), the resolution, The number of images, the distance between images 75, the length between frames 102, and the presence / absence of a warning are instructed (FIG. 8). For example, the reading start position is the fourth frame, the image size is the standard size (36 × 24 mm), the resolution is 20 pixels, the number of images is 20 frames, the distance 75 between images is 38 mm, and the space between frames is 1 frame.
02 is set to 2 mm with a warning. In addition, 1
The length of 02 may be recognized by displaying a scale on the frame 102 as shown in FIG.

Then, the scanner 4 moves the film 100 to the reading start position 72 of the fourth frame. Then, in response to the input instruction to start reading, reading is started (step S602). In step S603, the total sum variable Nrgb of the image data between frames is initialized to Nrgb = 0. In step S604, the image data from the one-dimensional CCD sensor 11 is input to the memory.

In step S605, it is determined whether or not the current film position is the frame interval 102. Step S6
01, the distance between images 75 is 38 mm, and the space between frames 102 is 2 m
Since m is specified, the film position can be recognized in calculation. If it is the frame interval 102, the process proceeds to step S606, and the image of the frame interval 102 is captured, and if it is the frame inside 101, the process proceeds to step S607.

In step S606, first, the image data obtained by sequentially irradiating RGB light is binarized to obtain the image data total Lrgb of one line. This image data total sum Lrgb is added to the total sum variable Nrgb. Step S60
At 7, it is determined whether one frame (38 mm) has been read. If one frame has not been read, the designated pixel (for example, 20 pixels) is moved (step S608). If one frame is read, the process proceeds to step S609.

That is, in steps S602 to S608, the image (36 mm) from the read start position 72 of the fourth frame to the end position 76 within the frame is read, and the space between frames 1 is read.
Read the distance 74 (2 mm) of 02. Specifically, assuming that the stepping motor 1 pulse (1 pixel) moves by 10 μm, the CCD sensor 11 reads the image data of each color of RGB every 20 pulses applied to the stepping motor 12 (1 line). 180
The image data of the line and the frame interval 102 is 10 lines.
Then, the total image data Nrgb for the frame 102
(10 lines of Lrgb) is obtained.

In step S609, is the sum total variable Nrgb, which is the sum of the binarized RGB values read by the frame interval 102, substantially equal to the threshold value Mrgb registered in ROM (READ ONLY MEMORY) in advance? Determine whether or not.
If the total sum variable Nrgb is substantially equal to the threshold value Mrgb, the process proceeds to step S610, and if they are equal, step S61.
Go to 1. The threshold value Mrgb is obtained by multiplying a value M for one line obtained by irradiating a standard negative or positive film with RGB light by a predetermined number of lines. That is,
Mrgb = (value for one line M x distance between set frames /
Resolution).

In step S610, it is determined whether or not the set number of images has been reached. In this embodiment, the process returns to step S602 until 20 frames are reached, and when 20 frames are reached, the reading is finished (step S612). On the other hand, in step S611, a warning is displayed that there is a malfunction in the film feeding, and the reading is stopped (step S61).
2).

In step S609 of this embodiment, it is determined whether or not the sum total variable Nrgb and the threshold value Mrgb are substantially equal. It is smaller than the length, and the total sum variable Nrg
It may be determined whether or not b is larger than the threshold value Mrgb. Next, an embodiment in which the image in the frame 101 is read without specifying the origin position of the film will be described with reference to FIGS.

In step S701, the operator designates the reading start position, the image size (line), the resolution (pixel) and the number of images (FIG. 11). For example, the reading start position is the sixth frame, the size of the image is horizontal 30 mm × vertical 20 mm,
The resolution is set to 10 pixels and the number of images is set to 2 frames. Then, the scanner 4 receives the input instruction to start reading from the state in which the operator has sandwiched the film between the pressing roller 14 and the driving roller 13 (step S501 described above), and starts reading (step S702).

In step S703, the total sum variable Nrgb of the image data between the frames is initialized to Nrgb = 0, and the variable A for counting the length between the frames is initialized to A = 0. The variable B for counting the length is B =
Initially set to 0, a variable C for counting the horizontal length of the frame 101 is initialized to C = 0, and the number D between frames is D =
Initially set to 0.

In step S704, the image data Lrgb for one line is initialized to Lrgb = 0. In step S705, the image data obtained by irradiating the RGB light is binarized to obtain the image data total Lrgb of one line. In step S706, the one-line image data total Lrgb is compared with the one-line image data total threshold Orgb stored in advance in the ROM or the like. The threshold value Orgb is a value obtained by experimentally irradiating a negative or positive unexposed portion with RGB light. If the total sum Lrgb of one line and the threshold value Orgb are substantially equal to each other, the frame interval 1
02 is confirmed, and the process proceeds to step S707. If the sum Lrgb of one line and the threshold value Orgb are not substantially equal to each other, it is confirmed that the frame 101 is present and the process proceeds to step S711.

In step S707, the length of the frame interval 102 is added for each number of read lines (A = A + 1). In step S708, the length A of the frame interval 102 is the frame interval 102.
It is determined whether the length is less than or equal to the reference value Ast. As the reference value Ast, for example, the maximum frame interval AA (3 to 5 mm) determined by the film feeding mechanism of a photographing device such as a camera is stored, and this value is read out to read pixels (10 μm
Divide by m). That is, in the setting shown in FIG. 11, the reference value Ast is 30 to 5 because every 10 pixels are read.
It becomes 0. Then, the slip of the driving roller 13 and the pressing roller 14 can be detected. If the length between the frames is abnormally large, a warning is issued (step S709), and if it is within the reference value, the process proceeds to step S710.

In step S710, the image data total sum Lrgb is added to the total sum variable Nrgb. Step S7
In 11, the number of lines being read in the frame 101 and the frame interval 102 is added (B = B + 1). Step S71
In step 2, it is determined whether or not the number of read lines B is equal to or less than a reference value Bst of the total length of one frame 101 and two frame spaces 102. As the reference value Bst, for example, 42 to 46 mm in which the horizontal aperture length is 36 mm and the distance between the two frames is 6 to 10 mm is stored, and this value is divided by the read pixel (10 μm per pixel). If the reading length is abnormally large, a warning is issued (step S713), and if it is within the reference value, step S714.
Proceed to.

In step S714, is the total sum variable Nrgb, which is the sum of the binarized RGB values read by the frame interval 102, substantially equal to the threshold value Mrgb registered in the ROM (READ ONLY MEMORY) in advance? Determine whether or not.
If the total sum variable Nrgb is substantially equal to the threshold value Mrgb, it means that there is a frame interval 102, and the process proceeds to step S715. If they are equal, the process proceeds to step S718. This threshold Mrgb is RGB for standard negative or positive film.
The value M for one line obtained by irradiating light is multiplied by a predetermined number of lines. That is, Mrgb = (value for one line M × (maximum frame interval AA / resolution −1)).

In step S715, the summation variable Nrgb
Is cleared (Nrgb = 0). In step S716, the number of spaces 102 is counted (D = D + 1).
If there are two pieces between the pieces 102, the inside of the piece 101 can be specified, and the process proceeds to step S721. If the number of the piece spaces 102 is one, the next piece space 102 has not been found yet, so the process proceeds to step S718 (step S718).
717).

In step S718, it is confirmed whether or not the number of frames 102 is one. If the number of pieces 102 is 0, the process proceeds to step S720. If the number of pieces 102 is 1, the process proceeds to step S719.
The number C of reading lines of 1 is counted and step S720
(Step S719). In step S720,
It moves by the set reading resolution (pixels) (Fig. 1
1).

In step S721, the first frame interval (D =
1) Find the center C1 of the distance to the second frame (D = 2). That is, since the reading line number C in the frame 101 is counted in step S719, the value is halved. In step S722, C1 in the middle of the frame 101
The image is automatically trimmed based on the set image size (FIG. 11), displayed on the display 50, and the process ends (step S722).

The automatic trimming described above will be described in detail with reference to FIG. FIG. 12 shows the size relationship between the image 80 of the frame 101 (exposure portion where the picture is shown) of the film 100, the image 81 actually read, and the image 82 to be trimmed. In the actually read image 81, the range in which the frame interval 102 exists on both sides is read (S704 to S720). During this period, the length of the space 102 is measured (S707). In addition, 101
The length 78 in the left-right direction is confirmed (S719). next,
The image center position is calculated from the left and right lengths of the obtained frame (S721), and the image 82 of a desired size designated in advance is trimmed by sorting from the obtained image center position (S722).

In the above-described embodiment, the exposed length 77 in the vertical direction (direction perpendicular to the film feeding direction).
Don't ask. However, the unexposed portion can be determined from the output of the one-dimensional CCD sensor 11. For example,
Of the RGB binarized data for one line, the first tens of pixels and the last tens of pixels are compared with a predetermined value. It can be determined whether or not it is an exposed portion.

If the value set on the screen shown in FIG. 11 is not within the predetermined range, a warning may be displayed on the display 50 of the personal computer 7 without calculating the image center position. . Alternatively, the read range 81 of the film 100 may be temporarily displayed on the display 50, and the operator may manually perform trimming to specify the range with the mouse 52 or the like.

Next, a method of controlling the scanner 4 with the personal computer 7 will be described. Control commands 91, 92 from the personal computer 7
Are sent to the scanner 4 via the connector cable 16. The control command is expressed in ASCII alphanumeric characters. First, the movement command is used to move the film from the current position to the reading start position. For example, MV representing a movement command
And the number of pixels representing the movement distance from the current position. When one pixel is 10 μm and it is moved by 1 mm, the moving distance is 100. Equation (1) is obtained.

MV 100 ... (1) Next, image reading is performed using a read command. The offset distance from the reading start position to the actual reading is 0 pixels in the film feed direction (reverse scanning direction) and 0 pixels in the main scanning direction. Further, when the reading resolution is set to every 6 pixels, the number of read pixels is 640 in the backward scanning direction, and 480 in the main scanning direction, the equation (2) is obtained when reading.

BX 0,0,6,6,640,480 (2) In this case, if one pixel is 10 μm, 3 on the film surface.
An image of 8.34 mm x 28.74 mm is read.
Further, the film moves from the reading start position to the position of 38.34 mm. On the other hand, the image data 93 obtained by the scanner 4 is sent to the personal computer 7 via the connector cable 16. The image data is represented by RGB data.

The image data 93 has, for example, approximately 16 million colors when the color expression is represented by three colors of RGB (red, green, and blue) of 256 gradations of each color. 256 steps of each color become 8-bit data 93 (FIG. 13).

[0051]

According to the present invention, when a photographic film having a plurality of frames photographed is read, the photographic film can be obtained by prescanning without setting the photographic film on the scanner so that only the frames can be accurately read. The origin position can be set on the screen and the inside of the frame can be detected automatically.

[Brief description of drawings]

FIG. 1 is a schematic diagram when a personal computer is connected to a scanner showing the present embodiment. .

FIG. 2 is a flow chart of the film origin position determination according to the present embodiment.

FIG. 3 is a first example of display on the monitor for setting the film origin position.

FIG. 4 is a second example of the display on the monitor for setting the film origin position.

FIG. 5 is a diagram showing an exposed portion and an unexposed portion of the strip film.

FIG. 6 is a first example of a screen displayed on a monitor for setting reading parameters.

FIG. 7 is a flow chart diagram for detecting image reading and its reading abnormality.

FIG. 8 is a second example of a screen displayed on a monitor for setting reading parameters.

FIG. 9 is a flow chart diagram for performing automatic image reading and automatic trimming.

FIG. 10 is a flow chart diagram for performing automatic image reading and automatic trimming.

FIG. 11 is a third example of a screen displayed on a monitor for setting automatic trimming reading parameters.

FIG. 12 is a diagram showing a reading range, an exposure range, and a trimming range of a film at the time of automatic trimming.

FIG. 13 is an image data format diagram.

[Explanation of symbols]

4 ... Scanner 7 ...
PC 10 ・ ・ ・ ・ ・ ・ LED light source 11 ・ ・ ・ ・
.... One-dimensional CCD 13 ... Drive roller 14 ...
..Pressing roller 50 ..... Display 51 ..
・ ・ Keyboard 52 ・ ・ ・ ・ Mouse 61 ・ ・ ・ ・ ・ ・
・ ・ Indicating arrow 62 ・ ・ ・ ・ ・ ・ Scale 100 ・ ・ ・ ・ ・ ・
·· the film

Claims (16)

[Claims] 1. An image reading device that reads an image of the document while moving either the document or the optical system relatively, a display unit that displays the image read by the image reading device, and an origin position of the document. An origin position input unit for designating an arbitrary point on the document image displayed on the display unit for instructing, and an input unit for designating a position to start reading the image of the document with reference to the origin position. An image reading system, comprising: a control device provided. 2. The control device further comprises an output unit for outputting a signal for starting the reading of the image of the original document and for outputting a signal for stopping the reading of the image of the original document. Item 1. The image reading system according to Item 1. 3. The image reading system according to claim 1, wherein the original includes photographic film obtained by photographing a plurality of frames, and the reading start position is a frame number. 4. An image reading device for reading an image on the photographic film while relatively moving either a photographic film having a plurality of frames photographed or an optical system, and a display unit for displaying the image read by the image reading device. And an origin position input unit for designating an arbitrary point on the film image displayed on the display unit for designating the origin position of the film, based on the image output from the image reading device and the origin position. And a controller for determining whether or not the film is normally fed. 5. An inter-frame length input unit for setting the length in the sub-scanning direction between the unexposed portions between the frames, wherein the determination unit outputs from the image reading device. 5. It is determined whether or not the feeding of the film is normal based on the image of the unexposed portion thus formed and the length between the frames.
The image reading system described in 1. 6. The image reading system according to claim 5, further comprising a malfunction warning unit that warns a malfunction when the film is not fed normally. 7. The image reading system according to claim 1, wherein the image reading device and the control device are integrally configured. 8. A photoelectric conversion means for reading an image on the photographic film while relatively moving either a photographic film having a plurality of frames or an optical system, and unexposed based on the image read by the photoelectric conversion means. And a display unit for displaying an image in the frame sandwiched between the two frames based on the space between the at least two frames detected by the detection unit. An image reading device characterized by the above. 9. The image reading device according to claim 8, wherein the detection unit detects a frame interval by comparing a threshold value stored in advance with an image read by the photoelectric conversion unit. apparatus. 10. A reading range setting unit for setting an image of a desired size on the film, and a calculation unit for calculating a central portion of the frame based on a position between the two frames. 9. The image reading apparatus according to claim 8, wherein the display unit distributes and displays the image of the desired size around the center portion of the frame. 11. An image reading method for reading an image of an original by photoelectric conversion means while moving either the original or the optical system relatively, wherein the image of the original read by the photoelectric conversion means is read. An arbitrary point on the document image displayed on the display unit is displayed to indicate the origin position of the image of the document, and the reading of the image of the document is started based on the origin position. An image reading method characterized by indicating a position. 12. The image reading method according to claim 11, wherein the original includes a photographic film obtained by photographing a plurality of frames, and the reading start position is a frame number. 13. An image reading method in which an image of the original is read by a photoelectric conversion means while relatively moving either the original or the optical system, wherein the image of the original prescanned by the photoelectric conversion means. Is displayed on the display unit, an arbitrary point on the document image displayed on the display unit is designated to indicate the origin position of the image of the document, the reading parameter is set for main scanning, and the origin position is set. An image reading method comprising performing a main scan and displaying the result on the display while following the parameters as a reference. 14. The image reading method according to claim 13, wherein the prescan is performed at a low resolution. 15. The image reading method according to claim 13, wherein slippage of the document is detected by detecting a length between frames during the main scan. 16. An image reading method for reading an image of the film by photoelectric conversion means while relatively moving either a photographic film having a plurality of frames photographed or an optical system, the reading parameter of the photographic film being provided. Is set, the image of the photographic film is read for a predetermined length, at least two frames of the unexposed portion are detected, and the inside of the frame of the photographic film is discriminated.