JPH0621914B2 - Frame position setting method - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a frame position setting method in a microfish search device.

(Technical background of the invention and its problems) When automatically searching for a frame photographed by a microfiche using a microfish search device, the keyboard of this search device is operated to determine the address of the target frame (reference frame Enter the number of each row and column from
The retrieval device conveys the microfiche, automatically retrieves the frame at the position corresponding to this frame address, and projects the frame for this purpose on the reader screen.

FIG. 8 schematically shows an example of a frame arrangement in a conventionally used microfiche, in which the "reference frame" P ₀ (the address (0, 0, 0)), the "span coma" P _S (the address
up to (m, n)), (m + 1) frames in the horizontal direction (X-axis movement direction of the search device) in the figure, and (n +) in the vertical direction (column) direction (Y-axis movement direction of the search device) in the figure 1) It is assumed that the frames have been shot. Here, the shooting pitch of each frame is known because it is set at the time of shooting, and its value is set in the X-axis direction.
And A _y A _x, the Y-axis direction, this value is assumed to be inputted in advance by a manual operation to the inspection apparatus.

Therefore, conventionally, when the reference frame P _0, which is the reference point for setting the frame position, is first set at the projection position of the search device, the search device measures the distance from the origin (not shown) on the machine in this search device. Is measured by the amount of movement (for example, the number of pulses) when the film is conveyed, the position of the reference frame P ₀ is measured along the X axis and the Y axis, and detected as coordinate values (X ₀ , Y ₀ ). To do. When the frame to be searched, for example, the frame address (i, j) of “Σ” shown in FIG. 8 is input, the coordinate value (X _i , Y _j ) of the frame Σ is converted into the coordinate value of the reference frame P ₀ . (X ₀ ,
Y ₀ ) and the reference pitches A _x and A _y can be used to obtain and set the position from the following equation (1).

However, the microfiche to which such a position setting method can be applied is limited to those in which the respective frames are arranged in parallel to the moving direction (X and Y axes) of the search device, but actually, the film set at the time of shooting is set. Due to the displacement of the position etc., the arrangement of this frame is not necessarily parallel to the movement axis of the search device, and even if the position setting as described above is performed, the target frame is accurately set on the reader screen. I can't
There was a problem that the position had to be manually reset each time.

Therefore, a frame position setting method that solves such a problem is disclosed in US Pat. No. 4,287,564.
According to the disclosed frame position setting method,
As shown in FIG. 9 corresponding to the figure, it is assumed that the arrangement of the frames is inclined as shown with respect to the movement axis (X and Y axes) of the search device. Here, the number of frames ((m + 1) ×
(n + 1)) is known. Therefore, first, as described above, the position of the reference frame P ₀ is measured as the coordinate value (X ₀ , Y ₀ ), and the maximum address frame P _{M of the} same row as this reference frame P ₀ (the address (m, 0 )) Is measured as a coordinate value (X _m , Y ₀ ′), and the movement amount L _{x in} the X-axis direction and the deviation amount Δ _y in the Y-axis direction due to the inclination during the measurement are calculated from the coordinate value (2 ) Equation.

Then, using the movement amount L _x , the shift amount Δ _{y in the} Y-axis direction, and the number of frames m therebetween, the reference pitch A _x ′ and the reference correction amount δ _y per frame are calculated by the following equation (3). Ask.

Similarly, the position of the maximum address frame P _N (the address (0, n)) of the same column as the reference frame P ₀ is measured as the coordinate value (X ₀ ′, Y _n ), and in the Y axis direction between them. The shift amount L _y and the shift amount Δ _x in the X-axis direction due to the inclination are calculated from the coordinate values by the following equation (4).

Then, the reference pitch A _y ′ and the reference correction amount δ _x per frame are obtained from the following equation (5) using the movement amount L _y , the displacement amount Δ _{x in the} X-axis direction and the number of frames n therebetween.

Here, the reference correction amount δ _x in the X-axis direction is the shift amount between the frames in the same row (the first row in this example), and the reference correction amount δ _y in the Y-axis direction is the same column (the first row in this example). This is the amount of displacement between each frame in the column). Therefore, the reference correction amount δ _{y in} the Y-axis direction is accumulated by the row address, and the reference correction amount δ _{x in the} X-axis direction is accumulated by the column address and increases respectively.

Then, if you input the frame you want to search, for example, the frame address (i, j) of "Σ" shown in Fig. 9, the coordinate value of this frame Σ
(X _i , Y _j ) is the coordinate value (X ₀ , Y ₀ ) of the reference frame P ₀ and
By using the reference pitches A _x ′ and A _y ′ and the reference correction amounts δ _{x and} δ _y obtained from the equations (3) and (5), it can be obtained from the following equation (6).

Here, in this frame position setting method, the maximum inter-frame lengths L _x and L _y of the microfish row and column are measured as described above, and the maximum inter-frame lengths L _x and L _y are respectively the number of frames between them. Reference pitch A _x ′, A _y ′ divided by m, m
In addition, the reference correction amounts δ _x and δ _y are obtained from the displacement amounts Δ _x and Δ _y due to the inclination, and the reference pitches A _x ′ and A _y ′ are corrected. Even with a microfish that is in existence, the tilt can be corrected and the target frame can be set accurately.

However, in such a frame position setting method, the reference frame P ₀ and the maximum address frame of the row and column are
P _M and P _N must be photographed, and moreover, the frame must be a clear frame image because it becomes the reference position as described above. However, depending on the microfiche, for example, only the character that serves as an index is photographed in the reference frame P ₀ , or nothing is photographed in the maximum address frame P _M , P _N of the row and column for editing. However, there is a problem that the above-described frame position setting method cannot be applied to such a microfiche.

Further, conventionally, when searching for positioning a microfish frame, the above-described position adjustment data is obtained for each frame, so that a correct search cannot be performed at high speed.

(Object of the Invention) The present invention has been made under the circumstances described above.
An object of the present invention is to actually display frame images even in a microfiche in which the array of frames is shifted with respect to the moving direction of the search device, even if the reference frame or the maximum address frame of the row or column is not photographed. Provide a frame position setting method that allows you to search for frames corresponding to other frame addresses in advance by simply setting the desired multiple frames that have been shot, and then read and automatically position them when searching To do.

(Summary of the Invention) The present invention relates to a method for setting a frame position of a microfiche in a search device, and sets an arbitrary plurality of frames having different addresses photographed by the microfiche, and sets each address of the plurality of frames and the plurality of the frames. From each coordinate value on the frame search device, the positioning data capable of positioning any frame photographed on the microfiche is obtained, and the microfiche or the cartridge is registered in advance, and the registration data is used when the microfiche is used. Is read out, and the position of the frame can be set correctly and quickly without obtaining the correction amount at the time of search.

(Embodiment of the Invention) FIG. 1 shows an example of the structure of a microfilm retrieval apparatus to which the method of the present invention is applied. The selected microfiche 1 is placed on a retrieval table 2 and a light source 3 is used to form a lens system 4. Is irradiated through. The light transmitted through the search frame of the microfiche 1 is input to the mirror 6 via the lens system 5, and the frame image is projected on the screen 7 by its reflection.
The entire search device is controlled by a controller 10 including a CPU, and the controller 10 is connected to an external computer 30. The search table 2 is connected to the pulse motor M1 via the driver 11.
And M2 are respectively moved in the X and Y directions to be adjusted to the normal position, and the microfish 1 is selected by the fish selection mechanism 17 via the cartridge search device 16. A keyboard 15 is connected to the controller 10 for data input and operation commands, items required for searching are displayed on the CRT 12, and a memory 13 is connected to the controller 10. And a recording device for recording the position adjusting data according to the present invention on the microfiche 1 or the cartridge.
14 are connected.

With such a configuration, when data is registered, as shown in FIG.
Select in order at 17 and set on the search stand 2 (step S2
0), frame images are searched by driving the pulse motors M1 and M2 (step S21). Then, the frame image is adjusted to a standard position such that the frame image is located at the center of the screen 7, and the frame image is projected (step S22). The frame position adjustment amount at this time is set to the drive amount of the pulse motors M1 and M2 (for example, pulse The number is obtained as described later (step S23), and the data for position correction is registered for each frame (step S24). As shown in FIG. 3, the data registration for position correction is performed by the code plate 42 of the fish jacket 40 that houses the microfish 1.
A bar code (or magnetic ink code, OCR character, etc.)
It is printed by 41, or is stored in a memory element (EEPROM, EPROM, IC card, etc.) 51 provided in a fish cartridge 50 accommodating a large number of microfiche as shown in FIG. 4 via a terminal portion 52. You may do it. Further, the memory 13 may be nonvolatile RAM or ROM, and may be stored in an external memory such as a floppy disk, a hard disk, or a bubble memory, or in the inspection database of the external computer 30, in which the microfish mode, format, You may make it register with the data regarding position information.

In this way, if the position correction data of the frame image is obtained and registered in advance for each microfiche, if the data corresponding to the frame NO. Is read during the actual search,
From this data, it is possible to immediately adjust to the correct position and perform a search. FIG. 5 shows an example of the operation. By inputting the fish number and the frame address with the keyboard 15 (step S30), the micro fish of the fish number input by the fish selection mechanism 17 is selected from the cartridge and loaded. Then, the search frame is positioned at the search position by driving the pulse motors M1 and M2 via the driver 11. In this case, the position correction data registered as described above is read to determine whether or not position correction is necessary, and if necessary, position correction is performed by driving the pulse motors M1 and M2. Steps S31 and S32), and projection is performed at the correct position (step S33).

Next, how to adjust the frame position described above, that is, how to obtain the position correction data will be described.

FIG. 6 is a diagram for explaining an example of the frame position setting method according to the present invention, in which frame images are not captured on the frame P ₀ which is the “reference frame” and the maximum address frames P _M and P _N of the row and column. If the frame position setting method cannot be applied, the microfish search machine is converted to the "frame pitch adjustment mode" and the three frames in which the frame images are actually taken are set.
By accurately positioning the positions of these three frames, the coordinate value of the reference frame, the reference pitch, and the reference correction amount are obtained, and the arbitrary position setting of the address is realized. Here, these three frames can be set arbitrarily, but in order to accurately position the frames to be searched, as will be described later, these three frames are preferably located at positions as far apart as possible in the XY directions. The first frame “α” which is closest to the frame P ₀ and the frame image is captured, and the second frame “α” which is closest to the maximum address frame P _M of the row and in which the frame image is captured. Frame “β”
And the third frame “γ” that is closest to the maximum address frame P _N of the column and has a frame image captured.

FIG. 7 is a flowchart showing the operation of the frame position setting method, which will be described below with reference to FIG.

To search for a frame “Σ” as shown in FIG. 6, first, when the microfish searcher is switched to the “frame pitch adjustment mode” and the frame position setting is started, the first frame α (the address (a _x , a _y )) and the second frame β (its address (b _x , b _y )) are set, and first the first frame α
, And position it precisely on the center of the screen 7 using the “fine adjustment keys” of the keyboard 15 and set its coordinate values (X _a , Y _a ).
And measure the address (a _x , a _y ) of this frame α with CR
Display on T12 (step S1). Therefore, the address (a _x , a _y ) of the projected first frame α is _input to the keyboard 15
Is operated and the "start key" is operated to store the frame address (a _x , a _y ) and the coordinate value (X _a , Y _a ) of the first frame α in the memory 13 ( Step S2). Next, in the same manner, the second frame β is projected, the position is accurately positioned in the center of the screen 7 by using the “fine adjustment key”, and its coordinate value (X _b , Y _b ) is measured. The address (b _x , b _y ) of β is displayed on the CRT 12 (step S3). Therefore, the address (b _x ,
The b _y) and inputs by operating the keyboard 15, by operating the "start key", the second frame address of the frame β (b _x, b _y) and the coordinate values (X _b, Y _b) Is stored in the memory 13 (step S4). Similarly, the third frame γ is projected in the same manner, the "fine adjustment key" is used to accurately position it in the center of the screen 7, and its coordinate values (X _c , Y _c ) are measured. The address (c _x , c _y ) of γ is displayed on the CRT 12 (step S5). Therefore, this projected third
The address (c _x , c _y ) of the third frame γ is input by operating the keyboard 15, and the “start key” is operated to input the frame address (c _x , c _y ) and coordinates of the third frame γ. Value (X _c , Y _c )
Is stored in the memory 13 (step S6).

Here, the row and column addresses of the three frames α, β, and γ are different from each other, and the reference pitches A _x ′ and A _y ′ and the reference correction amounts δ _x and δ _y cannot be obtained as they are. . Therefore, first, for the second frame β, a frame β'having the same column address as the first frame α (the address (b _x , a _y )) and for the third frame γ the first frame α are used. Frames with the same row address as α γ ′
(That address (a _x , c _y ))
Let (X _b ′, Y _b ′), (X _c ′, Y _c ′). Then, each two frames alpha, beta 'between and alpha, gamma' movement amount l _x between ', l _y' and,
A Y-axis direction of the deviation amount delta _y 'and the X-axis direction of the deviation amount delta _x', determined from the following (7) and (8) from the coordinate value (step S7).

Then, the movement amount l _x ′, the deviation amount Δ _y ′, and the above 2
Using the number of rows (b _x -a _x ) between the rows α and β ′, the reference pitch A _x ′ and the reference correction amount δ _y ′ are converted into the above movement amount l _y ′,
The reference pitch A _y ′ and the reference correction amount δ _x ′ are calculated from the following (9) and (10) by using the shift amount Δ _x ′ and the number of columns (c _x −c _x ) in the column between the two frames α and γ. ) Equation (step S8).

Therefore, the coordinate values (X
_b , Y _b ) and (X _c , Y _c ) are the coordinate values (X _a ,
Y _a ) and the reference pitch obtained from the above equations (7) to (10)
Using A _x ′, A _y ′ and the reference correction amounts δ _x ′, δ _y ′, the following (1
It can be written as equation (1).

Then, by rearranging equation (11) above, the required reference pitch
A _x ′, A _y ′ and the reference correction amounts δ _x ′, δ _y ′ are obtained by the following equation (12), and these values are stored in the memory 13. (Step S8).

Then, the coordinate value (X ₀ , Y ₀ ) of the reference frame P ₀ is set to the reference pitch A _x ′, A obtained from the first frame α and the equation (12).
_{Using y} ′ and the reference correction amounts δ _x ′, δ _y ′, it is obtained from the following equation (13) and stored in the memory 13 (step S9).

Since the reference frame coordinate value, the reference pitch, and the reference correction amount necessary for setting the frame position have been obtained, the frame to be searched, for example, the frame address of "Σ" shown in FIG.
When (i, j) is input (step S10), the coordinate value (X _i , Y _j ) of this frame Σ is converted into the coordinate value (X ₀ , Y ₀ ) of the reference frame P ₀ and the reference pitch A _x ′. , A _y ′ and the reference correction amounts δ _x ′, δ _y ′ can be obtained from the following equation (14) (step
S11).

Here, in this frame position setting method, as described above, the arbitrary three frames photographed by the microfiche are set and their coordinate values are measured, and the row address of the first frame is set for the second frame. equal frames of the first frame and the column address is assumed for the same frame, and the third frame and its frame between length l _x ', l _y' and displacement amount Δ _x ', Δ _y' measured, the inter-frame length l _x ', l _y' and displacement amount Δ _x ', Δ _y' a reference pitch a _X respectively divided by the number of frames between them ', a _y' and the reference correction amount δ _x ', δ _y' To
Since the reference pitches A _x ′, A _y ′ and the reference correction amounts δ _x ′, δ _y ′, which are the reference values for searching the frames, are found to have errors in the values because they are obtained from the coordinate values of the three frames. The error is accumulated during the search, and the target frame cannot be set accurately. Therefore, in order to reduce the above-mentioned error, if the above-mentioned arbitrary three frames are set as far as possible between the three frames, the error will be very small without accumulating for each frame. The target frame can be accurately positioned. Further, even if the size of the microfiche changes or the dimensions thereof vary, the error is extremely small without being accumulated in each frame, and the target frame can be accurately positioned. Then, by repeating the above steps S10 to S11, the position of a predetermined frame can be set accurately, and this data is used as the position correction data of each frame.

Note that the above-mentioned position correction is for when there is an inclination, but XY
If there is only a deviation, it is sufficient to measure 2 frames. Further, when the position coordinates are obtained from the offset data, the span distance, and the number of frames, the method of Japanese Patent Application No. 57-78013 can be used.

(Effects of the Invention) As described above, according to the frame position setting method of the present invention,
Since the position correction data that has been obtained and registered in advance is read to correct the position, it is possible to automatically search at a high speed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example of a microfilm retrieval apparatus related to the present invention, FIG. 2 is a flow chart showing an example of data registration of the present invention, and FIGS. FIG. 5 is a diagram showing an example of data registration according to the present invention, FIG. 5 is a flow chart showing an example of contribution according to the present invention, FIG. 6 is a diagram for explaining a frame position setting method of the present invention, and FIG.
FIG. 8 is a flowchart showing the operation, and FIGS. 8 and 9 are diagrams for explaining a conventional frame position setting method. P ₀ …… Reference frame, P _M …… Maximum row address frame, P _N ……
Maximum column address coma, A _x ′, A _y ′ ... Standard pitch, L
_x ′, L _y ′, l _x ′, l _y …… frame length, α, β, γ …… frames set arbitrarily, Σ …… frame to be searched.

Claims (2)

[Claims] 1. A method of sequentially extracting a target microfiche from a plurality of microfiche and setting a position of a frame at a designated address among a plurality of frames photographed on the taken out microfiche,
An arbitrary plurality of frames having different addresses are selected for each of the plurality of microfiche, and a correction value necessary for setting the frame position is obtained from each coordinate value and each address on the search device of the selected plurality of frames. Registered correction value and reference format information, read out the correction value and reference format information corresponding to the extracted microfish from the registered correction value and reference format information, and read the frame of the specified address of the microfiche. The frame position setting method is characterized in that the position of is determined and set. 2. The frame position setting method according to claim 1, wherein the arbitrary plural frames having different addresses are two or three frames.