JP2000194827A - Image retrieval system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image retrieval system for restoring image information in the case that the image information of an object preserved in a photographing device is changed in the image retrieval system for which the photographing device for photographing and recording the image of an original and electronically filing the image and a reader for reading the retrieval mark of a photographing medium, performing retrieval and reading the image are connected. SOLUTION: When the automatic restoration of the image information is instructed, whether or not the image information of a data base is erased or the like is checked (1004). When it is erased or the like, the address information of a corresponding microfilm is read from the data base and transmitted to a retrieval device C and the image on the microfilm is retrieved (1005 and 1006). By a microfilm scanner MS, the image on the microfilm is read and the image information is recorded in the data base (1007 and 1008).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for projecting an image of a subject (original document) onto a photographing medium such as a long microfilm, for example, and projecting the image on a reading sensor surface of an image reading means. The present invention relates to an image retrieval system in which a photographing device for reading and a photographed image information converting device for electrically reading image information sequentially photographed on a long microfilm with a microfilm scanner or the like are connected.

[0002]

2. Description of the Related Art Rotary cameras are used to reduce the size of images of objects (documents) such as documents, drawings, bills, checks, stock certificates, etc., and record them on a microfilm or the like. Images recorded on microfilm have excellent storability, high density and evidential ability, but require development after photographing. In addition, in order to immediately search and edit an image after photographing, an image (electronic file) in which an image of a subject is read and recorded as an electric signal by a photoelectric conversion element is superior.
For this reason, it has become necessary to use a photographing record on a microfilm or the like together with an electronic file.

[0003] In a conventional rotary type camera using both a photographing record and an electronic file, a subject is fed to a photographing position, and while the subject and the microfilm are moved, an optical image of the microfilm is formed by an imaging lens. In addition to taking an image formed on a surface, the optical path is optically divided on the way, guided to an image reading means, electrically read, and recorded on a recording medium such as a magnetic disk.

[0004] Further, a reader printer or the like having an optical mechanism for enlarging and projecting image information recorded on a microfilm or the like on a reduced scale on a reading screen, and a printer mechanism for projecting onto a photoreceptor and outputting a copied image. Using the image forming apparatus described above, it was possible to perform operations such as viewing and printing image information in the microfilm.

[0005]

When the image information of a subject stored by a conventional photographing apparatus is corrupted due to falsification, erasure, or the like, the subject is photographed again or stored on a microfilm. There is no choice but to redo the shooting using the image information as a paper medium using a reader printer or the like, causing a great deal of trouble for the user.

An object of the present invention is to connect a photographing device for photographing and recording an image of a document and electronically filing the image, and a reading device for reading a search mark on a photographing medium to search and read the image. The present invention provides an image search system for restoring image information when image information of a subject stored in an imaging device is changed in the image search system.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an image capturing apparatus, comprising: capturing an image of a document on a photographic medium by an image capturing unit; reading the image as an electric signal by a first image reading unit; A photographing device to be sent to the device, a search mark in the photographing medium is detected by a detecting means to search for image information of the photographing medium, and the searched image information is read as an electric signal by a second image reading means and stored in a recording device. In an image search system having a reading device for sending, a recording device for recording at least the image information and the search information, and a display device for displaying at least the image information, the information content of the image information in the recording device is With respect to the changed image information, the image of the photographing medium is read as image information by the reading device using the search information recorded in the recording device. Te, by recording to the recording apparatus, characterized by returning the image information that has changed.

In this way, when the image information of the document recorded in the recording device is altered or erased or otherwise changed, the image information recorded on the photographing medium which is hard to be changed and has excellent storability is obtained. , It is possible to always provide the user with highly reliable image information.

[0009] The state of the photographing medium on which an arbitrary image is recorded may be recorded in the recording device as to whether the image can be read or not.

In this manner, the state of the photographing medium can be known before reading the image to be restored, and if the state cannot be read, appropriate processing for reading can be performed. Thus, image information can be efficiently restored.

[0011] The search information may be recording position information of an arbitrary image on the photographing medium, and the image information may be searched by detecting the search mark corresponding to the recording position information by the detecting means. Good.

In this way, image information to be restored can be efficiently searched.

A photographing device for photographing an image of a document on a microfilm by an image photographing means, reading the image as an electric signal by a reading sensor of the image reading means and sending it to a memory, and a retrieval mark in the microfilm. A reading device that detects the microfilm image information detected by the detection means, reads the searched image information as an electric signal by a photoelectric conversion element, and sends it to a memory; and a memory that records at least the image information and the search information. A display that displays at least the image information, wherein, among the image information in the memory, the image information whose information content has been changed, using the search information recorded in the memory for the microfilm. Is read as image information by the reading device, and the By recording the re, characterized by returning the image information that has changed.

In this way, when the image information of the document recorded in the recording device is altered or erased or otherwise changed, the image recorded on the photographing medium which is hard to be changed and which has excellent storability is obtained. , It is possible to always provide the user with highly reliable image information.

Whether the state of the microfilm on which an arbitrary image is recorded is developed, undeveloped after photographing,
Whether the image has not been developed during photographing may be recorded in the memory.

In this way, the state of the microfilm can be known before reading the image to be restored, and if the microfilm is in an undeveloped and unreadable state, the appropriate processing for reading is performed. Therefore, the image information can be efficiently restored. The search information may be recording position information of an arbitrary image on the microfilm, and the image information may be searched by detecting the search mark corresponding to the recording position information by the detecting unit.

This makes it possible to efficiently retrieve image information to be restored.

An inspection signal indicating whether or not the information content of arbitrary image information recorded in the recording device has been changed is recorded in the recording device, and whether or not the image information has been changed based on the inspection signal is determined. The determination may be made.

This makes it possible to quickly determine whether or not the image information has been changed. Further, by incorporating the judgment work based on the inspection signal into the procedure, the changed image information can be automatically restored under various conditions.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiment.

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an external connection diagram of an image search system according to the present invention.

The photographing device RF is a photographing device for photographing a subject on a microfilm as a photographing medium and recording image information and address information (recording position information) at the same time.

The microfilm scanner MS is a device for converting image information on a microfilm into an electric signal by a photographing element.

The microfilm search device C is a device for searching for a microfilm from frame information added to an image of a rolled microfilm.

Personal computers PC1, PC2
Are input devices such as a microcomputer for system control, an internal memory such as a RAM and a ROM, an external memory such as a floppy disk or a cartridge disk, an external communication means such as a network, a keyboard and a pointing device. And a display means such as a display for exchanging information with an externally connected device and organizing information.

The photographing device RF includes a cable L1 capable of communicating information such as image information, address information, and device control information.
Is connected to the personal computer PC1, and image information, address information and the like taken by the photographing device RF are sent to the personal computer PC1 via the cable L1.

In the personal computer PC1 as a recording device, the sent image information and address information are organized, and a database of the image information and the images photographed on the microfilm is created. The personal computer PC1 and the personal computer PC2 are connected by a cable L3 capable of communicating image information, address information, and the like. The personal computer PC2 transmits address information of an image photographed on a microfilm from the personal computer PC1. obtain.

The personal computer PC2 is connected to the microfilm scanner MS via a cable L2 capable of communicating information such as image information, address information, and device control. Based on the address information, the microfilm search device C connected to the microfilm scanner MS searches for an image on the microfilm,
The image on the microfilm is converted into image information by the microfilm scanner MS, and the image information is sent to the personal computer PC2.

FIG. 2 is a schematic configuration diagram showing one embodiment of a subject transport system of the photographing apparatus RF. When the subject S is placed on the sheet feeding table 12 inclined downward, the subject S moves in the direction of arrow a due to gravity, and the subject S is separated from the sheet feeding roller 13 rotating in the direction of arrow b and the separation roller 14 rotating in the direction of the arrow c. Are sent one by one.

A lower belt 17 is stretched around the belt rollers 16 and 21, and an appropriate tension is held by a tension roller 20.
The subject S is conveyed by the lower belt 17 by the rotation of.

The idle roller 15 and the guide unit 18 hold the subject S by pressing it against the lower belt 17. An object sensor 10 detects the object S and is used for adjusting the timing of the photographing operation.

Then, the subject S is conveyed from the horizontal direction to the vertical direction by the lower belt 17 and passes through the subject guide glass 32. At this time, the sides of the subject S are simultaneously illuminated by the pair of illumination lamps 31. Nip rollers 22 and 23 are provided above and below the guide glass 32, respectively. Further, an appropriate tension is held by the belt roller 26, and the subject S having passed through the guide glass 32 is conveyed by the rotation of the upper drive roller 29. Further, the idle roller 24 presses and holds the subject S against the upper belt 28.

Further, the subject S changes the transport path from the vertical direction to the horizontal direction by the upper belt 28, and the arrow d
It progresses in the direction and is discharged to the stacker 30.

The subject guide glass 3 which is an exposure unit
On both sides of the first mirror 2, first mirrors 3 each forming an angle of 45 ° left and right with respect to the plane of the subject S moving in the vertical direction
Reference numerals 3 and 33 'are supported by a base structure (not shown) inside the photographing apparatus RF body in the same manner as the above-described roller shaft for conveying the subject.

FIG. 3 is a perspective view of a mirror configuration showing an optical system of the photographing apparatus RF. In the exposure section, images on both sides of the subject S illuminated by the pair of illumination lamps 31 are reflected by the first mirrors 33 and 33 'and projected onto a camera 38 as an image photographing means for photographing an image or the like on a photographing medium. In the first optical system A, the light passes through the slits 34 and 34 ′, and the passed image is reflected obliquely downward by the second mirror 35. This image is reflected upward again by the third mirror 36, then reflected forward by the fourth mirror 37, and the image reflected by the fourth mirror 37 is shown in FIG.
Is transmitted through an imaging lens 39 of a camera 38 shown in FIG. 1 and is imaged on a microfilm Fa on a capstan 40.

The capstan 40 is connected to a drive system of the main body of the photographing apparatus RF via a capstan clutch (not shown). The capstan clutch is connected and the capstan 40 is rotated in accordance with the timing at which the subject S comes to the shooting position.
Is transported. Note that an encoder (not shown) serving as a detection unit is connected to the capstan 40 so that the movement amount and the remaining amount of the microfilm Fa can be detected.

On the other hand, the subject S is exposed at the same exposure position as the camera 38 in the second optical system B projected to the reading section 45 as the first image reading means having the solid-state image pickup device. The image passes through and is reflected obliquely downward by the second mirror 42. After this image is reflected upward again by the third mirror 43,
The image reflected forward by the fourth mirror 44 is converted into an electrical signal corresponding to the optical information of the image by the reading unit 45, and the external communication unit 46
The image information is sent to the externally connected personal computer through the external communication unit 46.

FIG. 5 is a block diagram of the reading section 45 and its periphery. In the figure, reference numeral 50 denotes a solid-state imaging device (CCD) as a reading sensor for a front surface of an image, and reference numeral 50 'denotes a solid-state imaging device (CCD) as a reading sensor for a back surface of an image. This solid-state imaging device 50,
The signals converted from light by 50 'are digitized by A / D converters 51 and 51', respectively. The digitized image information is corrected by the multi-value image processing unit 53 to correct the light amount difference between the central part and the peripheral part of the illumination lamp 31 (shading correction), to correct the gradation (γ correction), Correction (edge enhancement) that emphasizes a change in shading of an image is performed. The image information processed in this way is binarized by the image binarization circuit 54 depending on whether it is above or below the threshold value. The binarized image information is supplied to the binary image processing unit 5
At 5, a frame erasing process for removing a portion other than the image area is performed. The image information processed in this way is sent to an externally connected personal computer via the external communication unit 46.

FIG. 6 is a front view of a microfilm scanner as a reading device equipped with a microfilm search device as an information search device of the present invention.

MS is a microfilm scanner, C is a microfilm search device mounted on the microfilm scanner, 130 is a reader screen, 116 is a projection lens, and 203 is a control device (keyboard) as input means. The control device 203 includes an input unit 123 and a display unit 127. As input means, there are a numerical key (numeric keypad) for setting an image address on a film and a search key for instructing a search. Usually, after inputting an address numerical value to be set with the numerical key, the search key is pressed. By pressing the button, the image address can be specified.

FIG. 7 is a perspective view of an optical system in the microfilm scanner. As will be described later, a desired image frame portion of the rolled microfilm Fb is searched for on the projection glass portion G which is a projection position by an automatic image frame searching operation of the microfilm searching device C. The image frame portion has a light source lamp 114, a spherical mirror 114a,
It is illuminated from the lower side by illumination means including a condenser lens 115 and the like, and the illumination light transmitted through the film is transmitted to the projection lens 116 and fixed first to fourth mirrors 141 to 14.
The projection optical system 4 is enlarged and projected at a predetermined magnification on the back surface of the reader screen (light diffusion plate) 130 by the optical system of the reader unit, and the micro image can be viewed as an enlarged image from the front side of the screen 130.

Reference numeral 145 denotes a scanner having a scanning first mirror 146 and a second mirror 147. Reference numeral 148 denotes a photoelectric conversion unit provided with a photoelectric conversion line sensor (second image reading means, photoelectric conversion element) such as a CCD. The scanner 145 is controlled to move forward and backward at right angles to the optical path between the fixed second mirror 142 and the fixed third mirror 143 of the reader unit optical system, and when used as a reader, the scanning first mirror 146 retreats from the optical path. It is held in the state position. When the user wants to scan and record the micro image enlarged and projected on the screen 130, the user instructs the image scan to activate the photoelectric conversion unit 148.
45 is moved in the direction of entering the optical path, and the scanning first mirror 146 scans the image light on the optical path. The scanning light passes through the scanning second mirror 147 and passes through the slit 14.
9, the image reaches the photoelectric conversion element 150, and an image scanned by the photoelectric conversion unit 148 is extracted as an electric signal. The photoelectric conversion unit 148 includes a photoelectric conversion element, an electric signal amplification circuit, a storage unit, and the like.

FIG. 8 is an external view of the microfilm retrieval apparatus C. The microfilm search device C of this example is a unit device that is detachable from the microfilm scanner MS, and includes a carrier lower unit 132 and a carrier upper unit 132a.
32 is fixedly mounted on the microfilm scanner MS. G is a projection glass part.

FIG. 9 is a perspective view of the internal mechanism of the carrier upper unit 132a of the microfilm search device. 1
32b is a bottom plate of the carrier upper unit 132a.
Reference numeral 101 denotes a film supply cartridge in which a long microfilm Fb as an information recording medium is stored in a roll shape. The film cartridge 101 is set on a film mounting portion of the upper carrier unit 132a from the side of the front door 132c of the upper carrier unit 132a. Reference numeral 102 denotes a capstan roller for driving the microfilm Fb in the cartridge 101. M1
Is a solenoid for bringing the capstan roller 102 into contact with the microfilm Fb, and 104 is a spring for moving the support arm 103, the plunger 103a and the capstan roller 102 to separate the capstan roller 102 from the microfilm Fb.

M2 is a film rewinding motor for rotating the film spool in the cartridge 101. S2 is a brake solenoid for the film rewind motor M2. When the brake solenoid S does not operate, the motor M2 is rotatable. When the brake solenoid S2 operates, a control plate 105 fixed to the motor shaft is used.
To prevent the rotation of the motor M2.

Reference numerals 106 and 107 are film guide rollers. Reference numeral 108 denotes a take-up reel. M3 is a film winding motor for rotating the winding reel 108, S3 is a brake solenoid for the motor M3, and 109 is a brake plate. 114A represents the optical center of the image projection unit. A guide plate is provided for guiding the film along a film feeding path between the cartridge 101 and the take-up reel.

Reference numerals 117a and 117b denote mark detecting means for detecting a search (measurement) mark M provided on the side of each image frame portion of the microfilm Fb. In this embodiment, the projection glass is a projection position. In the section G, both sides of the film feeding path are provided, and 117a is a detecting means on the A channel side and 117b is a detecting means on the B channel side. The detection means 117a and 117b have a built-in photoelectric conversion element,
In the process in which the microfilm Fb is being conveyed forward or backward as described later, the light from the lamp 114 is interrupted by the search mark M to detect the search mark, and a search mark detection signal is used as mark information in a process to be described later. Output to the means 120. 128 is a photo encoder for detecting the transport speed and transport amount of the film.

The operation of the photographing apparatus RF according to the first embodiment of the present invention will be described with reference to the flowchart of FIG.

When the user attempts to record a subject, the subject is scanned on the microfilm by the photographing device RF and the subject is scanned (1001). Image information and microfilm address information are transmitted from the photographing device RF to the personal computer PC1 (1).
002). The personal computer PC1 creates a database of image information and address information (100
3). At this time, for example, a checksum (inspection signal) of the image information for determining the falsification of the image information is also recorded on the database.

The operation of automatically returning image information according to the first embodiment of the present invention will be described with reference to the flowchart of FIG.

When the automatic restoration of the image information is instructed,
It is checked whether the image information of the database in the memory of the personal computer PC1 has been erased or falsified by checking the checksum information (100).
4). If the erasure or alteration has been performed, the personal computer PC2 reads the address information of the corresponding microfilm from the database in the memory of the personal computer PC1, and transmits the address information to the search device C (1005). The search device C searches for an image on the microfilm using the transmitted address information of the microfilm (1006). The image on the microfilm is read by the microfilm scanner MS, and the image information is transmitted to the personal computer PC2 (1007). In the personal computer PC2, the transmitted image information is transferred to the personal computer PC1.
To be recorded in a database in the memory of the personal computer PC1 (1008). These automatic restorations are performed for all image information in the database or image information arbitrarily selected by the user (100
9).

The automatic restoration of the image information in the above example may be performed at the instruction of the user, may be performed automatically at any time, or may be performed automatically at every access to any database. Or any of these conditions may be arbitrarily combined.

In this embodiment, the display of the screen 130 of the microfilm scanner MS and the displays of the personal computers PC1 and PC2 constitute a display device.

In the present embodiment, the photographing device and the microfilm scanner are connected to different personal computers, but they may be connected to the same personal computer.

In this embodiment, the database in which the image information, the address information, and the like are recorded is created in the memory of the personal computer PC1, but may be stored in the personal computer PC2.
C1 and a memory in a personal computer (not shown) connected to the personal computer PC2, and similarly, a memory (not shown) connected to the personal computers PC1 and PC2.

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIGS.

The operation of the photographing apparatus RF according to the second embodiment of the present invention will be described with reference to the flowchart of FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

When the user attempts to record a subject, the subject is scanned on the microfilm by the photographing device RF and the subject is scanned at the same time. (2001).
Image information and microfilm address information are transmitted from the photographing device RF to the personal computer PC1 (2002). The personal computer PC1 creates a database of image information and address information (200
3). At this time, for example, a checksum of the image information for determining the falsification of the image information is also recorded on the database. If the remaining amount of the microfilm becomes zero during the shooting, or if the user wants to stop shooting and develop even if the microfilm has the remaining amount, the shooting is terminated (2004) and the microfilm can be developed. The fact that the state has been reached is recorded in the database in the memory of the personal computer PC1 (2005). When the user actually develops the microfilm (2006), the microfilm is developed and recorded in a database in the memory of the personal computer PC1 (2007).

The operation of automatically returning image information according to the second embodiment of the present invention will be described with reference to the flowchart of FIG.

If the automatic restoration of the image information is instructed,
It is checked whether the image information of the database in the memory of the personal computer PC1 has been erased or falsified by checking the checksum information or the like (200).
8). If the erasure or alteration has been performed, the personal computer PC2 reads from the database in the memory of the personal computer PC1 whether the corresponding microfilm has been developed (2009). If undeveloped, it is determined whether the microfilm can be developed or cannot be developed due to reasons such as shooting (2010). If development is possible, development is performed and recorded in a database in the memory of the personal computer PC1 (2011). If the image cannot be developed, another image is processed. The address information of the corresponding microfilm is read from the database, and the address information is transmitted to the search device C (201).
2). The search device C uses the transmitted microfilm address information to search for an image on the microfilm (2013). Micro film scanner MS
To read the image on the microfilm and transmit the image information to the personal computer PC2 (201).
4). The personal computer PC2 transmits the transmitted image information to the personal computer PC1 and records the image information in the database in the memory of the personal computer PC1 (2015). These automatic restorations are performed for all image information in the database or image information arbitrarily selected by the user (2016).

In the above example, the undeveloped microfilm is developed and the image information is restored. However, since the development of the microfilm generally takes time, the restoration of the image information on the undeveloped microfilm is performed. May be omitted and another image may be processed to speed up the process of automatically restoring image information.

The automatic restoration of the image information according to the present embodiment may be performed at the instruction of the user, may be performed automatically at any time, or may be performed automatically at every access to any database. Or any of these conditions may be arbitrarily combined.

In the present embodiment, the photographing device and the microfilm scanner are connected to different personal computers, but they may be connected to the same personal computer.

In this embodiment, the database in which the image information, the address information, and the like are recorded is created in the memory in the personal computer PC1, but may be stored in the personal computer PC2. A memory in a personal computer (not shown) connected thereto may be used, and similarly, a memory (not shown) connected to the personal computers PC1 and PC2 may be used.

[0066]

As described above, according to the present invention, when a change such as falsification or erasure is made to the image information of a document recorded in a photographing apparatus, the photographing medium is less likely to be changed and has excellent storability. Since the information can be restored from the image recorded in the user, highly reliable image information can always be provided to the user.

Further, by recording the state of the photographing medium in the recording device, the changed image information can be efficiently restored.

[Brief description of the drawings]

FIG. 1 is an external connection diagram of an image search system according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing one embodiment of a subject transport system of the photographing apparatus according to the embodiment of the present invention.

FIG. 3 is a perspective view of a mirror configuration showing an optical system of the photographing apparatus according to the embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a camera of the photographing apparatus according to the embodiment of the present invention.

FIG. 5 is a block diagram of a reading unit and its surroundings of the photographing apparatus according to the embodiment of the present invention.

FIG. 6 is a front view of a microfilm scanner equipped with the microfilm search device according to the embodiment of the present invention.

FIG. 7 is a perspective view of an optical system in the microfilm scanner according to the embodiment of the present invention.

FIG. 8 is an external view of a microfilm search device according to an embodiment of the present invention.

FIG. 9 is a perspective view of an internal mechanism of a carrier upper unit of the microfilm search device according to the embodiment of the present invention.

FIG. 10 is a flowchart illustrating an operation of the image capturing apparatus according to the first embodiment of the present invention.

FIG. 11 is a flowchart illustrating an operation of automatically returning image information according to the first embodiment of the present invention.

FIG. 12 is a flowchart illustrating an operation of the image capturing apparatus according to the second embodiment of the present invention.

FIG. 13 is a flowchart illustrating an operation of automatically returning image information according to the second embodiment of the present invention.

[Explanation of symbols]

 RF imaging device 38 Camera 45 Reading unit Fa, Fb Microfilm, S Subject 117a. 117b Mark detection means 148 Photoelectric conversion unit 203 Control device MS Microfilm scanner C Microfilm search device PC1, PC2 Personal computer L1, L2, L3 Cable

Claims (7)

[Claims] A photographing device for photographing an image of a document on a photographing medium by image photographing means, reading the image as an electric signal by a first image reading means, and sending the electric signal to a recording device; A reading device that detects the image information of the photographing medium by detecting by the detecting unit, reads the searched image information as an electric signal by the second image reading unit, and sends the electric signal to the recording device; and records at least the image information and the search information. And a display device for displaying at least the image information. The image search system according to claim 1, further comprising: searching for image information whose information content has been changed among the image information in the recording device. By reading the image of the photographing medium using the information as image information with the reading device and recording the image information on the recording device, Image retrieval system characterized by returning the image information. 2. The image retrieval system according to claim 1, wherein the recording device records whether the state of the photographing medium on which an arbitrary image is recorded is readable or unreadable. 3. The search information is recording position information of an arbitrary image on the photographing medium, and a search for the image information by detecting the search mark corresponding to the recording position information by the detecting unit. The image retrieval system according to claim 1 or 2, wherein 4. A photographing device for photographing an image of a document on a microfilm by an image photographing means, reading the image as an electric signal by a reading sensor of the image reading means, and sending the electric signal to a memory; A reading device for detecting image information of the microfilm by detecting with a detecting means, reading the searched image information as an electric signal by a photoelectric conversion element, and sending it to a memory; and a memory for recording at least the image information and the search information. An image search system comprising: a display for displaying at least the image information; and an image information in which information content has been changed among the image information in the memory, using the search information recorded in the memory. Is read as image information by the reading device, and the memo is read. By recording to,
An image retrieval system for restoring changed image information. 5. The memory according to claim 1, wherein the state of the microfilm on which an arbitrary image is recorded is developed, undeveloped at the end of photographing, or undeveloped during photographing. Item 5. The image search system according to Item 4. 6. The search information is recording position information of an arbitrary image on the microfilm, and the search information is searched for by detecting the search mark corresponding to the recording position information by the detection unit. The image retrieval system according to claim 4 or 5, wherein 7. An inspection signal indicating whether or not the information content of any image information recorded in the recording device has been changed is recorded in the recording device, and whether or not the image information has been changed based on the inspection signal. The image retrieval system according to claim 1, wherein the determination is made.