JPH05284297A - Picture automatic input device - Google Patents

Abstract

PURPOSE:To provide a picture automatic input device in which a series of operations from setting of a picture original to setup processing are implemented automatically. CONSTITUTION:The input device is provided with a holder 1 arranging and holding plural picture originals, a picture read optical system 2 to read a picture of a picture original having an image pickup element, a picture original set mechanism 3 reciprocated between the holder 1 and the picture read optical system 2, extracting the picture original one by one from the holder 1 and setting to an optical path of the picture read optical system 2 to keep a prescribed attitude, and a picture data processing means extracting at least automatically a highlight level and a shadow level based on the preliminary scanning data read by using the picture read optical system 2, setting automatically the decomposing condition of the picture data read by using the picture read optical system 2 and processing automatically the picture data based on the set decomposition condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic image input device for automatically inputting each image data of a plurality of image originals.

[0002]

2. Description of the Related Art Conventionally, for example, a color scanner is known as an image data input device for an image original. In this color scanner, an operator sets the image originals one by one on a setting unit such as a rotating drum and scans the image originals to read image data. In addition, the operator performs a setup operation for manually setting separation conditions such as tone reproduction and color reproduction by designating highlight points and shadow points for each image original. Therefore, an image data input device that can automatically perform the setup work has been proposed.

In this type of image data input device, for example, in the case of a color image original, the highlight level of the image original data is determined by the total value of the color separated image data obtained through the R, G and B filters. The shadow level is determined, the tone curve is determined based on the image data obtained through the ND filter, and the image data is automatically set up based on these data.

[0004]

However, although the conventional image data input device of this kind can automatically set up the image originals, the operator still sets the image originals one by one in the setting section. There is a problem that it is necessary to set and read the image data, and it takes time and labor to read a large amount of image originals.

Therefore, an object of the present invention is to provide an image automatic input device capable of automatically performing a series of operations from setting of an image original to setup processing.

[0006]

SUMMARY OF THE INVENTION An image automatic input apparatus according to the present invention comprises a holder for aligning and holding a plurality of image originals, and an image reading optical device for reading an image of the image originals. System, the holding member and the image reading optical system are reciprocated to take out the image originals one by one from the holding member and set so as to maintain a predetermined posture in the optical path of the image reading optical system. Image original setting mechanism and fine image data read by using the image reading optical system by automatically extracting at least a highlight level and a shadow level based on rough image data read by using the image reading optical system. And the image data processing means for automatically processing the precise image data based on the set decomposition conditions.

[0007]

According to the automatic image input device of the present invention, the holder holds a plurality of image originals in alignment. The image document setting mechanism removes the holding frame members on which the image documents are set one by one from the holder. Then, the image original is set in the optical path of the image reading optical system so as to maintain a predetermined posture. The image data processing unit automatically extracts at least a highlight level and a shadow level by prescan data obtained by prescanning an image original document, sets disassembly conditions (setup), and is read by a main scan. Automatically process image data.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic image input device according to the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a holder, 2 is an image reading optical system, and 3 is an image original setting mechanism. Holder 1
Has a role of aligning and holding a plurality of image originals (described later). As shown in FIGS. 2 and 3, this embodiment is composed of a rotary cylinder 4 and a lid 5. .. The rotary cylinder 4 is composed of an inner cylinder 6 and an outer cylinder 7, and the inner cylinder 6 and the outer cylinder 7
And are connected by a radiation connecting wall 8. The connection between the inner cylinder 6 and the outer cylinder 7 is not limited to this. The inner cylinder 6 is attachable to and detachable from the output shaft 10 of the motor 9, and 11 is a shaft that rotatably supports the holding body 1. The shaft 11 is projectingly provided on the support plate 12. Elastic sponge bodies 13 and 14 for carrying an original image are stretched around the outer peripheral wall of the inner cylinder 6 and the inner peripheral wall of the outer cylinder 7. Sponge body 13, 1
The notch 1 is provided at 4 with an appropriate interval in the circumferential direction.
5 are provided. A holding frame member 16 accommodating a document image is inserted into the cut portion 15. Holding frame member 16
Is detachably supported on the holder 1 by the sponge bodies 13 and 14. The mechanism for holding the image original 18 is not limited to this.

As shown in FIG. 4, the holding frame member 16 is formed of, for example, a rectangular paperboard, and an opening window 17 is formed in the center thereof so as to correspond to the size of the image original. An image original 18 having a film size of 4 × 5 inches (see FIG. 5) is set in the holding frame member 16 shown in FIG. 4, and the image original 18 is positioned around the opening window 17. The positioning contour line 19 is drawn. The image original 18 is set according to the positioning contour line 19. A holding frame member 16 having opening windows 17 of different sizes is prepared for image originals of different film sizes, and an image original of film size of 35 mm, for example, is set on the holding frame member 16 shown in FIG. .. A mark M for determining the size of the window of the holding frame member 16 is shown in FIG.
As shown in FIG. 7, it is printed below the angle determination line 21. Each original image 18 is attached to the holding frame member 16, and the holding frame member 16 is sandwiched from both sides by being folded in two from the center and fixed to the holding frame member 16. FIG. 6 shows the half-folded holding frame member 16, and the bar code 20 and the angle determination line 21 are printed on one of the outer surfaces thereof.
Details of the barcode 20 and the angle determination line 21 will be described later.

The holding frame member 16 folded in two is inserted into the rotary cylinder 4 from above and supported by the rotary cylinder 4.
The lid 5 is put on the holding frame member 16. As shown in FIGS. 8 and 9, the lid 5 is provided with an annular pressing protrusion 22. The annular pressing projection 22 abuts on the upper side of the holding frame member 16 to perform a function of pushing down the holding frame member 16, and the holding frame member 16 has a constant size regardless of the film size. As shown in FIG. 3, a holding frame member 16 that holds original images 18 of different film sizes
Even when the rotating cylinder body 5 is held, the holding frame member 1
The lower side of 6 is maintained in place. The image reading optical system 2 is composed of an illumination optical system 23 and an image receiving optical system 24 (see FIG. 13). The illumination optical system 23 is an illumination light source 25.
And a condenser lens 26. 27 is a power supply used for the illumination light source 25. Image receiving optical system 24
Is an imaging lens 28 and R, G, B, ND filters 28a,
The image pickup device 29 is composed of 28b, 28c, 28d and an image pickup device 29. A space between the illumination optical system 23 and the image receiving optical system 24 serves as an entry / exit space for the chuck member 30 that constitutes a part of the image original setting mechanism 3. The image original setting mechanism 3 includes, for example, a drive motor 31 and a movable base 32. The movable table 32 is guided in the vertical direction by guide bars 33 and 34, and a rack 35 is provided on one side thereof. A pinion 37 is attached to the output shaft 36 of the drive motor 31, and the pinion 37 is meshed with the rack 35 thereof. The movable table 32 has its drive motor 3
It is driven in the vertical direction by 1. A forward / reverse motor 38 for normally rotating and reversing the image original 8 is mounted on the movable table 32. The chuck member 30 includes the forward / reverse motor 3
8 is attached to the output shaft 39. Chuck member 3
0 is composed of a fixed holding plate 40 and a movable holding plate 41 made of a magnetic material. A guide pin 42 is projectingly provided on the fixed holding plate 40. The movable holding plate 41 is supported by the guide pins 42, and is biased by the spring 43 in a direction away from the fixed holding plate 40. 44 is the movable holding plate 4
It is a head for preventing the disengagement of No. 1. In this embodiment, an electromagnet (not shown) is provided on the fixed holding plate 40 so as to attract the movable holding plate 40 against the biasing force of the spring 43. The fixed holding plate 40 has an abutting portion 40a that abuts the lower side of the holding frame 16.

FIG. 1 shows a state in which the chuck member 30 is in the raised position and the lower side of the holding frame member 16 is clamped, and the movable table 32 is lowered to a predetermined position after the holding frame member 16 is clamped. Then, the holding frame member 16 is set in the optical path of the image reading optical system 2. Near the optical path of the image reading optical system 2, a bar code reading device 45 and an image pickup element 46 for reading the angle determination line are provided so as to face the holding frame member 16. The barcode reading device 45 reads the barcode information and outputs it to the CPU 47 as an image data processing means. The image sensor 46 reads the angle determination line 21 and the mark M, and reads the mark M
Output to 7. An operation command means such as a keyboard 48 and a mouse 49, and a display device 50 are connected to the CPU 47. The CPU 47 has a storage device 51, a setup arithmetic circuit 52, an arithmetic processing circuit 53, and a data storage device 54. The setup arithmetic circuit 52 creates a histogram of the density distribution based on the image data obtained through the ND filter 28d by the prescan, and whether there are many bright parts as a whole (so-called high key) or dark parts as a whole (so-called under). To judge. Further, the highlight level and the shadow level are determined based on the respective image data obtained through the respective R, G, B filters 28a, 28b, 28c. The CPU 47 determines a tone curve based on the highlight level, shadow level and histogram. For example, in the case of an undersized original, the tone curve as indicated by the symbol K in FIG. 11 is selected, and in the case of a high key original, the tone curve as indicated by the symbol L is selected. Various types of these tone curves are prepared according to the document density. The arithmetic processing circuit 53 converts the image data obtained by the main scanning based on the selected tone curve into halftone dot data, and the data storage device 54 stores the halftone dot data. The image pickup device 29 is scanned by the scan drive circuit 46 ′, and the image signal is analog-digital converted by the A / D conversion circuit 47 ′ and input to the storage device 51.

When the start button is operated by the ten-key pad, the CPU 47 drives the drive motor 31 to drive the chuck member 30 upward (see FIG. 1). Then, the CPU 47 operates an electromagnet (not shown) to sandwich the holding frame member 16. The chuck member 30 is driven to descend after holding the holding frame member 16. As a result, the image original 18
Is set in the optical path of the reading optical system 2 as shown in FIG. 13 (see S.1 in FIG. 12). The barcode reading device 45 reads the information of the barcode 20 (S.
2). The barcode 20 is used as file information (management code) such as the name and number of the original image. The holding frame member 16 may be set on the holding body 1 upside down. When the side opposite to the side where the barcode 20 is printed faces the barcode reading device 45, the barcode data of the barcode 20 is not input to the CPU 47. The CPU 47 determines whether or not the barcode data is input, and when the barcode data is not input, it is determined as a reading error (S.3). The CPU 47 outputs a chuck member reversal command signal to the forward / reverse motor 38 via the controller 55 (S.4). As a result, the document frame holding member 16 is inverted and the barcode 20 is read by the barcode reading device 45.
(S.5). Next, the CPU 47 reads the bar code information (S.6). Then, the CPU 47 determines again whether a reading error has occurred (S.7).
The CPU 47 uses the original frame holding member 16 that has been set.
Error list is created (S.8). This error list is displayed on the display device 50. Then, the CPU 47 rotates the motor 9 by a predetermined angle. As a result, the next holding frame member 16 is positioned right above the chuck member 30.
S. 3 or S.I. 7, when the reading error does not occur, the file name of the document image is registered (S.
9). Next, the image sensor 46 reads the angle determination line data and the film size data (S.1).
0). The image sensor 46 has, for example, 17 × 6 image elements. Assuming that the angle determination line 21 is inclined with respect to the optical axis O of the image reading optical system 2 as shown in FIG. 14, the output of the image element in the shaded portion becomes a black level.
The output of the remaining picture elements is at the white level. here,
The 1st picture element of the row and the 17th picture element are made to correspond to the length L of the angle determination line 21 in a one-to-one correspondence, and the Y1th pixel of the column corresponding to the 1st row of the row. Assuming that the child and the image element corresponding to Y2 in the column corresponding to the 17th row in the horizontal row have a black level, the inclination θ of the image document 18 with respect to the optical axis O of the image reading optical system 2 is sin θ = (Y1 −Y2) / L is calculated (S.11).

In FIG. 14, Y1 = 4 and Y2 = 1.

Next, the CPU 47 performs a prescan (S.12). This prescan is R, G, B, ND
The filters 28a to 28d are alternately inserted into the optical path of the image receiving optical system 24. R, G, B filters 28a-28
The highlight level and the shadow level are calculated by the total value of the color separated image data obtained through c. ND
A histogram as a density distribution is created from the image data obtained through the filter 28d. Then, a tone curve is created (S.13). Next, the CPU 47
Performs main scanning (main scanning) (S.14). The image signal obtained by the main scanning is temporarily stored in the storage device in association with the file number (S.15). And
The main scanning image data is rotated using the obtained angle θ, and the optical axis O of the image reading optical system 2 of the image original 18 is processed.
The inclination of the image data is corrected based on the inclination with respect to (S.16). Next, the arithmetic processing circuit 54 performs arithmetic processing, converts it into halftone dot data, and saves it (S.1).
7). After the reading of the main scan image data is completed, the chuck member 30 is raised by the CPU 47, and the holding frame member 16 is returned to the original position of the holding body 1. Then, the holding body 1 is rotated by a predetermined angle by the motor 9. In addition, the image original 18
When the size of the image sensor 2 is different, the image of the image original 18 is made to match the size of the image sensor 29,
It is preferable that the image element of No. 9 can be used to the maximum extent and the reading resolution can be improved. In this way, the quality of the image can be optimized, and even if image processing such as scaling (enlargement / reduction) and rotation is performed in a subsequent process, deterioration of the image can be minimized. Therefore, when the document holding frames 16 having different film sizes are set in the optical path of the reading optical system 2, the imaging lens 28 is moved along the optical axis O to change the magnification, and the image on the image pickup device 29 is changed. Make sure that the size of is constant. For example, when the film size of the image document 18 read immediately before is the size shown in FIG. 15A and the film size of the image document 18 this time is the size shown in FIG. The lens 28 is moved in the direction of the arrow and the position of the image sensor 29 in the optical axis direction is adjusted so that the size of the image 18 ′ on the image sensor 21 becomes constant. Well-known means are used for the moving mechanism of the imaging lens 28 and the position adjusting mechanism of the image pickup device 29, and thus detailed description thereof will be omitted.

This reading is repeated for each image original 18, and when the reading of all the image originals 18 is completed,
The CPU 47 completes the reading (S.18).

Although the embodiment has been described above, the holding frame 1
The image original setting mechanism 3 and the image original setting mechanism 3 may have a structure similar to that of an automatic changer device used in a so-called slide projector.

[0018]

The automatic image input device according to the present invention has the effect of automatically performing a series of operations from setting of an image original to setup processing.

[Brief description of drawings]

FIG. 1 is a diagram showing a raised state of an image original setting mechanism of an automatic image input device according to the present invention.

FIG. 2 is a plan view showing the internal structure of the holder shown in FIG.

FIG. 3 is a diagram showing a cross-sectional structure of the holder of FIG.

FIG. 4 is a plan view showing a state in which a document holding frame is opened.

FIG. 5 is a plan view of an image original.

FIG. 6 is a diagram showing a state in which a document holding frame is closed.

FIG. 7 is a diagram showing another example of a document holding frame.

FIG. 8 is a plan view showing a lid of a holder.

9 is a cross-sectional view of the lid body shown in FIG.

10 is a diagram showing a detailed configuration of a CPU shown in FIG.

FIG. 11 is a diagram for explaining setting of a tone curve.

FIG. 12 is a flowchart of an image automatic input device according to the present invention.

FIG. 13 is a diagram showing a state in which an image original is set in an optical path of an image reading optical system.

FIG. 14 is a diagram showing an example of angle calculation.

FIG. 15 is a diagram showing a state of an image forming lens of an image reading optical system when different film sizes are set.

[Explanation of symbols]

 1 Holder 2 Image Reading Optical System 3 Image Original Setting Mechanism 9 Motor 16 Holding Frame Member 17 Opening Window 20 Bar Code 21 Angle Determination Line 30 Chuck Member 31 Drive Motor 38 Forward / Reverse Motor 46 Image Sensor 47 CPU

Claims (2)

[Claims] 1. A holding body for aligning and holding a plurality of image originals, an image reading optical system for reading an image of the image originals, an image reading optical system, and the holding body and the image reading optical system. And an image reading optical system, which are reciprocally moved between them to take out the image originals one by one from the holding body and set them in an optical path of the image reading optical system so as to maintain a predetermined posture. At least the highlight level and the shadow level are automatically extracted based on the pre-scan data read by automatically setting the decomposition condition of the image data read by using the image reading optical system, and the setting is performed. An image automatic input device, comprising: image data processing means for automatically processing the image data based on a decomposition condition. 2. The image according to claim 1, wherein the image data processing means has a storage means for storing the image data, and the storage means also stores a management code of the image original. Automatic input device.