JPH03179880A - Picture reading and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a partial copying without failure by discriminating whether or not a designated area is contained within a picture output range based on a data of a designated area when the area is designated and rotating the picture automatically when the designated area is not contained therein so as to contain the designated area within the picture output range. CONSTITUTION:When it is discriminated that a designated area 10 is not within a picture output range 30, an arithmetic circuit in a control circuit is used to apply coordinate transformation to coordinate data variables of apexes a-d respectively when the picture is rotated around a coordinate origin in the middle of a screen 2A as the center by 90 deg., and while the picture 11 projected on the screen 2A is rotated by 90 deg., whether or not the designated area 10 is contained in the picture output range 30 is discriminated. When the area is contained in the picture output range 30, a motor for prism rotation is controlled to rotate a prism by 45 deg. and the picture 11 projected on the screen 2A is rotated by 90 deg. to use the coordinate data variable after the coordinate transformation obtained precedingly and the picture in the range of the designated area 10 is outputted with trimming. Thus, the partial copying without fault is implemented with a simple operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image reading and reproducing device, and more particularly, to an image reading and reproducing device that optically enlarges and projects a film, reads it, and outputs it to a printer or the like. be.

(Prior Art) This type of device that enlarges and reproduces images recorded in reduced size on film is of the type that obtains enlarged reproduced images by exposing the optically enlarged image to a copying device, such as an electrophotographic device, through slit exposure. There are also known types that scan an enlarged image with a contact-type linear light-receiving sensor and output the image to a digital printer.

As an example, FIG. 5 shows a configuration diagram of an image reading and reproducing apparatus in which a contact type linear light receiving sensor is scanned just in front of the image forming surface of the screen. Here, 1 is a scanning unit thereof, 2 is a screen on which an enlarged image is projected, 20 is a light beam received on the screen 2, 17 is an imaging lens unit, 18 is a roll of microfilm, 19 is an illumination lamp, 15 1 is a first reflecting mirror, and 16 is a second reflecting mirror. The reduced image of the rolled microfilm 18 illuminated by the illumination lamp 19 is captured by the imaging lens unit 17.
, and is reflected by the first reflecting mirror 15 and the second reflecting mirror 16 to form an image on the screen 2 .

The configuration of this imaging lens unit is shown in FIG. Here, 21, 22 and 23 are drive motors for prism rotation, focusing and zooming, respectively. While the zoom lens 25 is driven, focusing is adjusted by the motor 22 via the gear 22^.

Note that the lens unit 17 can independently rotate an image by prism rotation, enlarge or reduce the image by zooming, and adjust focus by focusing through a control circuit using an operation switch (not shown). Returning to Figure 5 again, reflect! 5
and 6 are for folding the enlarged optical path to make the apparatus more compact, and the scanning unit 1 scans along the surface of the screen 2 in an isometric dotted line motion in response to a signal from an operation switch (not shown).

Conventionally, when copying a portion of an image that has been enlarged and projected, methods and devices for specifying the area include manually inputting coordinates from a keyboard using a digitizer, etc., and resistive voltage of a position sensor installed on the screen. A number of methods have been devised to detect a specified position from an object.

By the way, when an image recorded on a microfilm is projected onto the screen 2, there are cases in which the projected image 11 is vertically long as shown in FIG. 7, and horizontally long as shown in FIG. 7B. Therefore, in order to project both the vertically long image and the horizontally long image onto the screen 2 without any distortion, a screen 2A of a size that can cover and project the long sides of each image is required as shown in Fig. 8. becomes. At the same time, a scanning device that outputs an image to a digital printer using a linear light-receiving sensor uses a projection image 1! ! In order to output both vertically and horizontally without any keratin, a linear light receiving sensor with the same length as the long side of the image is required, but this would significantly increase the cost of the entire scanning system. Therefore, in many cases, a linear light receiving sensor corresponding to the short side direction is used to scan in the long side direction. Therefore, in such a case, a JKLM that shows the image output range 30 on the screen 2^ as shown in FIG. It is necessary to display an instruction marker such as , and rotate the image so that the image fits within it.

(Problem to be Solved by the Invention) However, in the device equipped with the screen and linear light receiving sensor as shown in FIG.
As shown in the figure, if the image 11 you are trying to output is horizontally long, but the image output range 30 is vertically long, rotate the image manually on the screen 2A each time you print out. After that, set the image output range 3.
The image 11 that you want to output must be placed within 0. Furthermore, if the specified area specified for partial copying of the image includes a part outside the image output range 30, the image is rotated so that the specified area falls within the image output range 30, and then the rotated image is Correct output cannot be obtained unless an area is designated for partial copying again. Furthermore, specifying an area for a rotated image may cause mistakes in the designated area.

As described above, conventional methods require complicated operations and further reduce work efficiency.

The purpose of the present invention is to focus on the above-mentioned conventional problems, and to solve them, it is possible to automatically output a specified image to an image output range without increasing the cost of the scanning system. Another object of the present invention is to provide an image reading and reproducing device capable of partial copying.

[Means to solve the problem]

In order to achieve such an object, the present invention provides an image reading and reproducing apparatus that scans and reproduces an image of a microfilm that is enlarged and projected onto a screen. an area specifying means for specifying, a determining means for determining whether the area specified by the area specifying means is within a reproducible image output range on the screen, and when the determination by the determining means is negative; The apparatus is characterized in that it comprises a coordinate conversion means for converting the coordinates of the specified area, and a means for rotating around the optical axis based on the converted coordinates.

(Function) According to the present invention, if it is determined that the specified area is outside the image output range based on the data of the specified area specified by the area specifying means, the image is automatically rotated,
At the same time, by converting the #A mark of the designated area, the image of the designated area can be placed within the image output range, and partial copying without failure can be performed with a simple operation.

(Example) Examples of the present invention will be described below in detail and specifically based on the drawings.

FIG. 1 shows an embodiment of the invention. In this example, in order to designate an area for partial copying of the projected image on the screen 2A, it is possible to specify an area for partial copying using a well-known digitizer or keyboard (not shown), or manually using a keyboard, or using a position provided on the screen. It is assumed that the specified position is detected by a device that detects the designated position based on the resistive partial pressure of the sensor. 12 is a control circuit according to the present invention, and the imaging lens 1
7 is operated functionally and controlled so that the image of the specified area falls within the image output range according to the procedure described later.

Now, as described above, the designated area lO has four vertices a,
When the masking/trimming selector switch (not shown) specified as shown in b, c, and d is switched to triggle to enable partial copying of only the specified range, the copy switch (not shown) is operated. However, here, Jl of the four vertices a, b, c, d of the specified area 10
[Data (xi, yl), (xi,
y3), (x2, yl), (x2, y3)
Also, the itv data of L and M are shifted to the markers J at the four corners of the image output range 30 displayed on the screen 2, respectively (Xl, Yl), (XI, Y3),
(X2, Yl), (X2, Y3), where the center of the screen 2A is the origin of the coordinates and the coordinate data variables xi, x2. yl, y2 and coordinate data constant X1. X2. Between Yl and Y2, XI<X2゜Yl<
Y2. It is assumed that there are relationships such as xi<x2 and yl<y2.

Next, the control procedure by the control circuit 12 will be explained with reference to FIG. 2 and FIGS. 3A to 3C.

In FIG. 2, it is first determined at 5TEPI whether or not a copy switch (not shown) has been pressed, and if the copy switch has been pressed, at 5TEP2 the rectangular designated area 10 specified using the above-mentioned means is 4 vertices a, b, c
, d coordinate data variables xi, x2°yx, yz are read out. Then, proceed to 5TEP3 and set these coordinate data variables xl, x2 . yl, y2 and the marker J indicating the image output range 30, coordinate data constants XI, X2 . Yl
, Y2. Therefore, as shown in Figure 3A, xi>
XI, x2<X2. If it is determined that the four vertices a, b, c, and d of the specified area IO do not protrude from the image output range 30 by satisfying the four conditions yl>Yl and y2<Y2, shift to 5TEPIO. Then, the coordinate data variable x1. x2. Using yl and y2, the image within the specified area IO is trimmed and output, and the process returns to 5TEPI and waits until the next copy switch is pressed.

In addition, in 5TEP3, the specified area 10 is the image output range 3.
0, i.e., the four vertices a and b of the specified area IO, as shown in b and c shown in FIG. 3B.

Parts of c and d protrude from the image output range 30,
Therefore, xi>XI, x2<X2. yl>Yl and! /
If any of the four conditions 2<Y2 is missing, use the arithmetic circuit in the control circuit (not shown) in 5TEP4 to rotate 9 with the coordinate origin at the center of the screen 2 as the center of rotation.
Coordinate data variables xi, yl, x2 . of vertices a, b, c, d when the coordinates are rotated by 0 degrees. Coordinate transform each y2,
5 It is determined whether the specified area 10 falls within the image output range 30 with the image projected on the screen 2 in TEP 5] 1 (not shown here, see FIG. 1) rotated by 90 degrees. . Note that the coordinate data variables after the above-mentioned coordinate transformation are xi' and x2'.

If yII, Y2', then xl' = xl cos90'' -yl 5in90
” =-y+yl' =xl 5in90@+yl
con90" = xlx2' = x2 cos90
'-y25in9Q°=-y2y2' =x25i
Since it is expressed as n90' + y2 con90' = x2, the coordinate data variables xi', x2', yl', y2' after the coordinate transformation obtained in this way and the marker J indicating the image output range 30, L, M coordinate data constants XI, X2. The judgment can be made by comparing Yl and Y2 by 5TEP5.

Here, as shown in Fig. 3C, xi'> XI, x2'
When the four conditions of <
If it is determined that the specified range of the specified area 10 is inappropriate even if rotated by 90 degrees, the specified range of the specified area 10 is determined to be inappropriate in 5TEP6, and an error message will be displayed on the display on the operation panel (not shown). Outputs messages requesting remanpower for the area.

Further, when the four conditions of xi'>XI, x2'<X2゜y1'>Yl, and y2'<Y2 are satisfied as shown in FIG. 3B, that is, the image 11 projected on the screen 2^ is 5TE when it is determined that the specified area 10 will fit within the image output range 30 even after rotation.
Proceed to P7 and install motor 2 for prism rotation mentioned above.
Operate 1 to rotate the prism 45 degrees, and screen 2
Image 11 projected on ^ is rotated 90 degrees and 5
Using the coordinate data variables xi', x2', yl', and y2' after the coordinate transformation obtained previously in TEP8, the image in the range of the specified area IO is trimmed and output.

When the output of the image is finished, the process advances to 5TEP9, and this time, the prism rotation motor 21 is moved in the opposite direction.
is rotated to return the image 11 projected on the screen 2A to its original position, returns to 5TEPI, and waits until the next copy switch is pressed.

As another embodiment, instead of rotating the prism 24 to rotate the image on the screen 2^, the linear light receiving sensor 14 may be rotated according to a designated area as shown in FIG.
By rotating the scanning direction A by 90@, or by providing a mechanism (not specifically shown) for rotating the film carrier holding the microfilm, both images themselves can be rotated, and a designated area can be partially copied. You can also do it. In addition, in FIG. 4, 13 is a linear light receiving sensor 14.
15 is the sensor unit 13 equipped with
It is a guide rail for scanning, and among the above,
When rotating the sensor in the scanning direction A, the entire scanning mechanism including the guide rail 15 is rotated.

(Effects of the Invention) As explained above, according to the present invention, based on the data of the specified area when an area is specified, it is determined whether the specified area fits within the image output range, and if the specified area does not fit within the image output range. In some cases, the image is automatically rotated to fit the specified area within the image output range, so image rotation can be easily performed at low cost without making the scanning system particularly large. If the image cannot be fit within the output range even after performing the following steps, an error message can prompt you to correct the image position or specified area. can be provided.

[Brief explanation of drawings]

The first section is a block diagram schematically showing an embodiment of the present invention, FIG. 2 is a flowchart showing the procedure of control operation according to the present invention, and FIGS. 3A to 3C are diagrams for outputting a specified area according to the present invention. 4 is a plan view of a screen according to a second embodiment of the present invention; FIG. 5 is a configuration diagram of a conventional example; FIG. 6 is a configuration diagram of an imaging lens unit; Figure 7 is a plan view of a screen in which a front view image becomes a vertically long image, Figure 7B is a top view of a screen in which a front view image becomes a horizontally long image, and Figure 8 is a plan view of a screen that can cover the long sides of a vertically long image and a horizontally long image. FIG. 9 is an explanatory diagram showing an example of specifying the image output range for FIG. 8; FIG. 1O is an explanatory diagram showing an example of moving a horizontally long image on the screen shown in FIG. be. DESCRIPTION OF SYMBOLS 1...Scanning unit, 2.2^...Screen, 10...Specified area, 12...Control circuit, 14...Linear light receiving sensor, 17...Imaging lens unit, 20...・Light flux, 21.22.23...Motor, J, LJ...Marker. 30... Image output range. f Ihi Sun Moon Ichifuno t ± Ita 11 71'< j 4p ¥ Man 1 Sword 11 1st figure 杢 i 芒! ! 2nd real row of the moon 1 n August 35 pile interval Conventional da 11 eyebrows 117 sl: J Rosuf 11-n dry [1 fi + sco Figure 7A Figure 7B Figure 8 Figure 9 ER3+': No ↑° on the screen
Left 15 I Elephant Seven Ga Car Day VI'Q + = 1 Mo] First Nzefu Une 2 Kei 1 Mi/) F Fraud Hi'J [Broom IO Diagram

Claims (1)

[Claims] 1) In an image reading and reproducing device that scans and reproduces and outputs an image of a microfilm enlarged and projected on a screen, an area for specifying an area to be reproduced and output from the image enlarged and projected on the screen. a specifying means; a determining means for determining whether or not the area specified by the area specifying means is within a reproducible image output range on the screen; 1. An image reading and reproducing apparatus comprising: coordinate conversion means for converting the coordinates of a converted area; and means for rotating the enlarged and projected image based on the converted coordinates. 3) The image reading and reproducing apparatus according to claim 1, wherein the means for rotating the enlarged and projected image is a means for rotating the means for holding the microfilm around the optical axis. 4) The means for rotating the enlarged and projected image is a means for rotating the means for scanning the enlarged and projected image around the optical axis together with the scanning direction. Image reading and playback device.