JPS63223630A - Image recording and reproducing system - Google Patents

Abstract

PURPOSE:To permit automatic detection of a photographing reduction rate of a film by photographing reference marks having regularity to the background part of an original to be photographed on the film, reading the marks at the time of reading the film and detecting the reduction rate at the time of photographing from the intervals at which the marks appear. CONSTITUTION:An image recording means (a) which records the marks having the prescribed regular intervals simultaneously at the same magnification to the peripheral region of an original image recording region F1 on an image information recording medium F such as film at the time of recording the original image P on the medium F and an image reading means (b) which reads the marks M recorded on the image information recording medium F by photoelectric conversion are provided. A measuring means (c) which measures the intervals of the marks M read by the image reading means (b) and a magnification detecting means (d) which detects the magnification of the original image recorded on the image information recording medium F from the measured value measured by the measuring means (c) and the predetermined original size of the intervals of the marks M are provided. The automatic detection of the photographing reduction rate of the film is thereby permitted.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an image recording and reproducing system that photographs image information on an image information recording medium such as a film, and photoelectrically reads and reproduces the photographed image information.

[Conventional technology]

Microfilm is generally known as an image information recording medium suitable for photographing, storing, and managing image information. Original documents such as blueprints and documents are photographed in a reduced size on microfilm, and during playback, the enlargement ratio for playback is determined based on the reduction ratio at the time the image was taken, and then the image on the microfilm is read by an image reading device. The information is read, the read information is enlarged at the determined magnification ratio, and the copying device is used to print the information.
It was reproduced and recorded on recording paper, etc. [Problems to be Solved by the Invention] However, the above-mentioned reduction ratio cannot be determined unless the information in the microfilm is output to an image display means such as a monitor and read by the operator. ,
Playback and recording at the correct magnification ratio required a very cumbersome and troublesome operation. 1: L 161111 A device was provided that recorded a bar code indicating the reduction ratio etc. near each image frame of microfilm and read the necessary information from the bar code, but a sensor dedicated to reading this bar code and a device were provided. , a method for recording barcodes on microfilm is required, and recording barcodes on microfilm is a cumbersome operation, so it has not been possible to achieve a significant reduction in operational work. . In view of the above-mentioned problems, the present invention eliminates the need for the conventional troublesome operation work, and automatically detects the reduction ratio at the time of shooting, regardless of the film (image information recording medium) taken at any reduction ratio. An object of the present invention is to provide an image recording and reproducing system capable of reproducing and recording by setting a reproduction/recording magnification. [Means for Solving the Problems 1] In order to achieve the above object, the present invention provides a method for recording an original image on an image information recording medium such as a film with variable magnification, in the peripheral area of the original image recording area on the medium. an image recording means for simultaneously recording marks having regular predetermined intervals at the same magnification; an image reading means for reading the marks recorded on the image information recording medium by photoelectric conversion; a measuring means for measuring the interval between the marks, and a magnification change ratio of the original image recorded on the image information recording medium based on the measured value measured by the measuring means and the original size value of the interval between the marks given in advance. The present invention is characterized by comprising a magnification change detection means. [Function 1] The present invention adds regular reference marks to the spine of a document to be photographed on an image information recording medium such as a film (hereinafter referred to as a film), and simultaneously photographs the document on the film. Since the mark is read at the time of scanning and the reduction ratio at the time of shooting is detected from the mark appearance interval, the reduction ratio at the time of shooting of the film can be automatically detected, and the appropriate playback/recording magnification is automatically set and the appropriate It is possible to print out image information of a large size. [Embodiment 1] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows the basic configuration of an embodiment of the present invention. (including the original image recording area Fl), marks M having regular predetermined intervals are simultaneously recorded at the same magnification in the peripheral area of the original image recording area Fl on the medium F. Reference numeral b denotes an image reading means, which reads the mark M recorded on the image information recording medium F and the original image P by photoelectric conversion during image reproduction. C is a measuring means, and image reading means b't" measures the interval between the read marks M. d is a variable magnification detection means, which calculates the measured value measured by the measuring means C and a pre-given ma. - The original size value of the interval between the marks M is used to detect the magnification ratio of the original image recorded on the image information recording medium F. The actual size value of the interval between the marks mentioned above can be obtained using an input means e such as a keyboard. Further, the magnification detected by the magnification detection means d is supplied to, for example, the image reproduction means f, and based on the magnification, the image reading means calculates, for example, the original size of the read document image. The image data that has been subjected to the variable magnification reproduction process is printed on a printer or output and displayed on a CRT display. In this figure showing an example of the configuration of a microfilm photographing device according to the present invention that can add marks, numeral 1 is a photographing table on which a document such as a blueprint of the object to be photographed is placed. are formed by printing, etc., with thin black ya2 stripes drawn uniformly at equal intervals. 3 and 4 are illumination systems for document illumination arranged at both the left and right ends of the photographing table 1, and 5 is the photographing table l. This is a camera for photographing the above original 6 on microfilm.The wi lines 2 drawn on the entire surface of the photographing table 1 are drawn at intervals of 80 mm, for example, and the line intervals are always constant everywhere, and the contrast of the lines 2 is As shown in FIG. 3, an A3 size document 6 such as a drawing is placed on the above-mentioned photographing table 1.
When the original 6 is placed, the original 6 blocks the lines 2 on the photographing table 1, and the lines 2 do not appear in the area where the original 6 is located, but equally spaced lines 2 appear only around the original 6. In this state, if the vicinity of the document 6 is also photographed on microfilm using the photographing camera 5, as shown in Fig. 4 (^) and (B),
The peripheral edge of the document portion 16 on the microfilm 11 (
Evenly spaced lines 12 are printed on the background). FIGS. 4(A) and 4(B) show microfilms 11 photographed as described above with different reduction ratios used as an aperture card 10. In other words, FIG. 4(A) shows the A3 size original described above. This shows an aperture card made from microfilm taken at a reduction rate of 1/15.
This figure (B) shows original 6 of the same size at a reduction rate of 1721.2.
This shows an aperture card made from microfilm taken with . As mentioned above, the reduction ratios of the microfilms in this figure (^) and this figure (B) are different, 1/15 and 1/21.2, so the line 12 imprinted on the microfilm 11 is The intervals are A and B, respectively, and A> as shown in this figure.
B, that is, the larger the reduction ratio during imaging, the smaller the distance between the lines. Therefore, the distance 11i (A, B) between the lines on the microfilm 11 due to this difference in reduction ratio is measured, and the reference line on the photographing table 1 is opened! l! The value of tX (e.g. 60
If we calculate the ratio of microfilm ll &
: The reduction ratio of the photographed document portion 16 is immediately known. That is, if the distance between 1412 lines on the microfilm 11 is the reference line distance x1 and the reduction rate is C, then the reduction rate C is expressed by the following equation (1). C=-...(1) Furthermore, if the magnification (enlargement rate) when accurately enlarging the size of the original document 6 during playback and recording is E, then the magnification E is calculated using the following formula (2
). X E = −= −−−−(2) L Here, since the above-mentioned value of Line distance on film ll 111[
It turns out that it is sufficient if iL can be detected. In this example, for convenience of explanation, microfilm 1
1 is described using a positive film, originally, most of the microfilm 11 is a negative film, and in this case, the black and white of the information on the film is reversed. It goes without saying that the present invention can be easily applied to this negative film as well. FIGS. 5(A) to 5(D) show a reading element using a COD (charge-coupled device) that can scan and read the line 12 of the microfilm 11 on the aperture card IO with the above-mentioned different reduction ratios. (hereinafter referred to as CCD)
21 at a certain time and the output waveform of the CCD 21 at that position. As shown in the figures (B) and (D), the pulse interval of the output of the CCD 21 is the line interval A of the microfilm 11.
, B, and becomes shorter as the reduction rate increases. By the way,
By measuring the pulse interval or frequency of the pulses using a predetermined clock, the distance between the lines can be determined. Also,
The CCD 21 is moved eight times in the sub-scanning direction by a drive motor as described later. FIG. 6 shows an example of the circuit configuration of a microfilm reader according to an embodiment of the present invention that can detect the reduction rate of photographic film. It is a value conversion circuit. 23 is a latch circuit that temporarily holds the image data binarized by the binarization circuit 22; 24 is a clock generation circuit that generates a sampling lock in the sub-scanning direction of the CCD 21; the sampling clock is generated by the latch circuit 23; sent to. 25 is a regularity detection circuit that detects the regularity of the line spacing of the microfilm background from the output signal S of the latch circuit 24; A photographing reduction ratio detection circuit calculates the photographing reduction ratio of the microfilm from the line spacing value, and 27 is a RAM that stores the output data of the photographing reduction ratio detection circuit 26 until the time of main scanning for actually reading and scanning the original 6. (random access memory)
It is a data memory like . The circuits 23 to 27 described above constitute a bliscan circuit 28, and perform a bliscan operation to detect the regularity of the line spacing of the microfilm background and the photographing reduction ratio of the microfilm during the bliscan before 8% reading of the original. A keyboard 29 is used to input data on the line spacing on the surface of the microfilm photographing table 1 before starting scanning, and the input line spacing data is supplied to the photographing reduction ratio detection circuit 26. This line spacing data is fixed in line spacing during film shooting, and unless it is changed, it is not input from the keyboard before scanning starts, but is stored in advance in the shooting reduction ratio detection circuit 26 in the briscan circuit 28. The initial value can be used. Reference numeral 30 denotes an image processing circuit, which scales the image data obtained by main scanning input from the binarization circuit 22 based on the photographing reduction ratio data of the film obtained by bliscan input from the data memory 27. Image processing. 31 is a printer that prints out image data processed by the image processing circuit onto recording paper. This printer 31 can be a variety of printers such as a general laser beam printer or an inkjet printer. Next, the operation of this embodiment with the above configuration will be explained. In response to the command to start reading the microfilm, the CCD 21 scans the microfilm 11 as shown in FIGS. 5(A) and 5(C), and the data obtained by the CCD 21 is
It is binarized by the digitization circuit 22. At the time of bliscanning, it is not necessary to read all the areas, and it is sufficient to read only the data necessary to detect the reduction ratio of the film. The output image data of circuit 22 is latched and sampled. The sampled image data S is shown in Figure 's5 (B),
The output waveform becomes as shown in (D), and is input to the line interval regularity detection circuit 25, which measures the pulse interval t of the data S, and from the value of t, the line open circuit 1IIL on the microfilm 11 is determined.
(corresponding to A and B in Figure 5 (^) and (C)). The regularity detection circuit 25 detects pulses that occur regularly over the entire main scanning direction of the CCD 21, and calculates the time interval t between the pulses so that the data in the information part is not mistaken for the background line 12. There is. The value obtained by this detection circuit 25 is input to the film shooting reduction ratio detection circuit 26, and this detection circuit z6 inputs the value to the keyboard 29.
The photographing reduction ratio C of the film is calculated using the above-mentioned equation (1) using the data of the regular line spacing X on the document photographing stand 1 inputted in advance from the above and the above-mentioned L. For example, in the case of FIG. 5(A), x = aomm,
When L = A = 4.0 m + o, L41 reduction rate C = -= - = - X 60 15 In other words, a reduction rate of 1/15 is calculated. In addition, in the case of Fig. 5(C), X = 60 mm, L w B
= 2.8+a+, that is, a reduction rate of 1/21.4 is calculated. The calculated reduction ratio value is temporarily stored in the data memory 27 and sent to the image processing circuit 30 during main scanning. The image processing circuit 30 performs image processing using the reciprocal (1/C) of the data (C) sent from the data memory 27 as a print magnification E, and outputs it to the printer 31 for printing on recording paper. As a result, in the case of Fig. 5 (^), 15 times,
In the case of FIG. 5(C), the read image is enlarged 21.4 times and output on the recording paper, so an image output that exactly matches the original size of the document 6 can be automatically obtained. In this embodiment described above, the reference marks at regular intervals in the background part are lines, and the interval between the lines is 6.
Although the reference mark is 0m+*, the present invention is not limited to this, and the reference mark may be a dot or a grid-like one.Also, it is not necessary to place the mark on the entire photographing platform, and an image sensor such as a CCD can detect the mark. The mark may be of any shape or size as long as it has a position and size that allows it to be read. Furthermore, the present invention is applicable not only to aperture cards but also to various image information recording media such as 16a+m and 35mm roll microfilms. Furthermore, if the above-mentioned regular reference marks exist in the entire background part of the film, the marks are hidden in the original image area of the film, so the image area is determined by the presence or absence of the marks. It is also possible to detect the position of. In addition, if the print magnification can be freely specified from the keyboard 29 and the image processing circuit 30 multiplies the specified print magnification by the reciprocal of the data sent from the data memory 27 to process the image, it is possible to perform arbitrary magnification. recorded images are obtained. FIG. 7 shows the internal structure of the microfilm reader according to the embodiment of the present invention.
A film 11 is attached to the corner window of the lamp 32 and the condenser lens 33.
The projected image of the film is formed by an imaging lens 34 onto the scanning surface of an image sensor 21 such as a COD having a linear array of light receiving elements. When the card IO is loaded along the guide 36, the sensor 37 reads information on the punched holes that have been punched in advance. For example, the punch hole information is as follows:
This is code information indicating the drawing number, manuscript size, scale, publication date, designer 10 number, etc. of the drawing photographed on the film 11. On the other hand, the image sensor 21 is fixed to a carriage 38 that moves in the sub-scanning direction indicated by the arrow, and a light shielding plate 39 provided at one end of the carriage 38 is located at a position (as shown in the figure) where a light shielding plate 39 provided on one end of the carriage 38 shields a photointerrupter 41 arranged on a scanning unit board 40. position) and waits for the card IO to be loaded. This stop position is referred to as the home position of the image sensor 21. Thereafter, when a reading command is given from a built-in control section (not shown), the recording scanning control section (not shown) controls the sub-scanning motor 42. The image sensor 21 and an image sensor drive circuit (not shown) are used to read and scan the image on the film 11. At this time, as described above, first, the mark (line) 12 on the microfilm 11 is read by the image sensor 21 in the pre-scan, the reduction ratio is calculated, and the image processing for enlargement is performed in the main scan based on the calculated reduction ratio. conduct. The carriage 38 is connected to a sub-scanning motor 42 via a wire 43.
After scanning to a predetermined position, the motor 42 is driven in reverse to return to the home position and stop, waiting for the next card 10 to be loaded. [Effects of the Invention] As explained above, according to the present invention, regular reference marks are added to the spine of a document to be photographed on an image information recording medium such as a film (hereinafter referred to as a film). The image is taken on the film at the same time, and when the film is read, the mark is read and the reduction ratio at the time of shooting is detected from the safe appearance interval, so the reduction ratio at the time of shooting can be automatically detected, and appropriate playback and recording can be performed. Image information of an appropriate size can be printed out by automatically setting the magnification. Therefore, according to the present invention, an operator can limit the reduction rate by reading the information in the film on a monitor screen with the naked eye, or determine the reduction rate based on the type of document in the film, etc. This eliminates the hassle of changing print magnification and projection lenses, and can be expected to significantly improve work efficiency. Further, according to the present invention, since the marks on the film are read by an image sensor for reading images, the reduction ratio of the image on the film is automatically adjusted without the need for a special sensor dedicated to reading marks. can be detected, thereby simplifying the device and reducing manufacturing costs. Furthermore, according to the present invention, it is possible to limit the image area, so even if there is a reference mark in the background (pack ground) of the document, the mark will not appear on the recording paper surface, resulting in a clean printed image. There is an advantage that you can get

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the present invention, FIG. 2 is a perspective view showing the configuration of a microfilm photographing apparatus according to an embodiment of the present invention, and FIG. 3 shows a document placed on the photographing table shown in FIG. A plan view of the main part showing the state in which it is placed, Figure 4 (^), (The illusion was created by photographing the original on microfilm with the device shown in Figure 2 at a reduction ratio of !/is and l/21.2. A plan view showing the Averchair card, and Figures 5 (^) to (D) are plan views showing the state when the image sensor (COD) scans the microfilm in Figures 4 (^) and (B). , a waveform diagram showing an example of the output waveform of the image sensor, FIG. 6 is a block diagram showing the circuit configuration of the microfilm reading device according to the embodiment of the present invention, and FIG. 7 shows the inside of the microfilm reading device according to the embodiment of the present invention. It is an exploded perspective view showing the configuration. 1... Shooting table capable of adding regular marks to the pack ground of film, 2... Marks (thin lines), 3.4-... Illumination system, 5 ...Camera for photographing, 6.. Original, 1O.. Aberchair card, 11-.. Micro film, 12-.. Thin line part, 1B-.. Original part, 21.. Image sensor (COD). ), 22--Binarization circuit, 23--Latch, 24--Clock generation circuit, 25--Line spacing regularity detection circuit, 26--Film shooting reduction ratio detection circuit, 27--・Data memory, 2 B-... Briscan circuit (film shooting reduction ratio detection circuit), 29-... Keyboard, 30-... Image processing circuit, 31-... Printer, 38... Carriage. Real e! Figure 6 is a block diagram showing the process of harvesting → mackerel.

Claims (1)

[Scope of Claims] 1) a) When recording an original image on an image information recording medium such as film with variable magnification, regular predetermined intervals are formed in the peripheral area of the original image recording area on the medium. b) an image reading means for reading the marks recorded on the image information recording medium by photoelectric conversion; c) the marks read by the image reading means; a measuring means for measuring the interval between marks; and d) the original image recorded on the image information recording medium based on the measurement value measured by the measuring means and the original size value of the interval between the marks given in advance. 1. An image recording and reproducing system comprising: a magnification change detection means for detecting a magnification change ratio. 2) The image recording and reproducing system according to claim 1, further comprising an input means for inputting the original size value. 3) In the system according to claim 1 or 2, scaling reproduction processing of the original image read by the image reading means is performed based on the scaling ratio detected by the scaling ratio detection means. An image recording and reproducing system characterized by having an image reproducing means that performs.