JP2001154281A - Image processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processor capable of preventing the deterioration of sharpness even in the case of obtaining an image by the reflected light and the transmitted light of light radiated to color photographic film. SOLUTION: In an image processing part 138, a high frequency component is removed by LPFs 159A to 159C from base layer reflected read data and emulsion surface reflected read data read at low resolution and transmitted read data read at high resolution after performing enlarging and reducing processing to the data, and color correcting processing, gradation conversion correcting processing and automatic dodging processing are performed to the data in an MTX circuit 160, in an LUT 162, and in an automatic dodging part 166, respectively. A low frequency component is removed from the transmitted read data by a subtraction part 161, and sharpness emphasizing processing is performed to the data by a sharpness emphasis part 168. The high frequency component data to which the sharpness emphasizing processing is performed and the low frequency component data to which the color correction processing is performed are synthesized by an addition part 167.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus, and more particularly to an image processing apparatus for performing image processing on an image recorded on a color photographic film during or after black and white development.

[0002]

2. Description of the Related Art A color photographic film such as a color negative film and a color reversal film is composed of a blue photosensitive layer for forming a yellow dye image by blue exposure, a green photosensitive layer for forming a magenta dye image by green light exposure, and a red light sensitive layer. To form a cyan dye image.

In the photographic processing of a color negative film,
The developer is oxidized in the process of reducing the halide grains containing the latent image to silver, and a dye image is formed by coupling with the dye-forming coupler using the oxidized developer. Conventionally, undeveloped silver halide is removed by a fixing step and undesired developed silver images are removed by a bleaching step.

In recent years, there has been an increasing demand for simplification of photographic processing of such color negative films. For example, JP-A-6-295035 discloses imagewise exposure of each color portion of red (R), green (G) and blue (B) without forming a dye image by developing a color photographic film in black and white. An image forming method is described in which image information representing the following is extracted from a silver halide color photographic element, that is, a silver image. This silver image can be obtained by irradiating light from the front side and back side of the color negative film, and detecting light reflected and transmitted from the front side (emulsion side) and back side (base side) of the color negative film. .

[0005]

However, a conventional color photographic film does not include a baryta layer having a high reflectance like color paper, and cannot reflect light efficiently. Therefore, in order to read an image with a high S / N (signal / noise) ratio, a large amount of light must be applied to the film. In particular, when reading the reflected light from the base surface side, it is necessary to irradiate a larger amount of light because the antihalation layer made of colloidal silver attenuates the light.

However, when a large amount of light is irradiated, heat is generated, and the heat may deform or damage the film, so that the amount of irradiation cannot be increased. Further, when reading reflected light, sharpness is greatly reduced due to occurrence of flare and multiple reflection within a layer, as compared with reading of transmitted light. Further, the sharpness is also deteriorated by a color shift due to a positional shift between a sensor that reads reflected light and a sensor that reads transmitted light.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an image processing apparatus capable of preventing deterioration of sharpness even when an image is obtained by reflected light and transmitted light of light applied to a color photographic film. The purpose is to provide.

[0008]

In order to achieve the above object, the present invention is directed to a blue-sensitive, green-sensitive, and red-sensitive photosensitive halide on a transparent support. An image recorded on a color photographic light-sensitive material having at least three photographic light-sensitive layers containing a silver emulsion and processed so that a silver image is formed in each photographic light-sensitive layer after the image is exposed. An image processing apparatus for processing, and a light source for irradiating light to the front side and the back side of the color photographic light-sensitive material, and reading the reflected image information at low resolution by reflected light from the front side and the back side of the color photographic light-sensitive material, A reading sensor for reading transmitted image information at a high resolution by light transmitted through the color photographic light-sensitive material.

A color photographic light-sensitive material contains at least 3 light-sensitive silver halide emulsions containing blue (B), green (G), and red (R) light on a light-transmitting support. Photographic photosensitive layers. After the photographed image is exposed to such a color photographic light-sensitive material, it is subjected to black-and-white development processing or color development processing so that a silver image is formed in each photographic light-sensitive layer.

[0010] The light source irradiates light to the front side and the back side of the color photographic light-sensitive material on which the silver image is formed. This light source
A light source constituted by an LED or the like that irradiates light (IR light) having a wavelength reflected by the silver image, for example, a wavelength in an infrared region can be used. When a color photographic light-sensitive material is color-developed, light having a wavelength reflected by a dye image formed on each layer, that is, L light, G light, and B light are irradiated.
A light source constituted by an ED or the like may be used.

The reading sensor reads the reflected image information at a low resolution, for example, by the light reflected from the front side and the back side of the color photographic material by the light source. The reading sensor reads transmitted image information at a high resolution, for example, by transmitting light transmitted through the color photographic light-sensitive material by the light source. That is, in the case of a color photographic light-sensitive material in which a blue-sensitive layer, a green-sensitive layer, and a red-sensitive layer are stacked in this order, for example, the B image information is reflected by the light reflected by the silver image of the blue-sensitive layer, and the silver image of the red-sensitive layer. The R image information is read by the read sensor by the reflected light. The G image information can be obtained, for example, by subtracting the R image and the B image from the image information of the three layers by the transmitted light read from the reading sensor.

The reading sensor includes a front side low resolution sensor for reading reflected image information at low resolution by reflected light from the front side of the color photographic photosensitive material, and the color photographic photosensitive material. A backside low-resolution sensor that reads reflected image information at low resolution by reflected light from the backside of the material, and a high-resolution sensor that reads transmitted image information at high resolution by transmitted light transmitted through the color photographic photosensitive material. can do.

Further, the reading sensor reads the reflected image information at a low resolution by the reflected light from one of the front side and the back side of the color photographic light-sensitive material. A dual-purpose sensor that reads transmitted image information at high resolution by transmitted light that has passed through, and a low-resolution sensor that reads reflected image information at low resolution by reflected light from the other of the front and back sides of the color photographic photosensitive material. May be. As described above, by using the sensor for reading the reflection image information and the transmission image information as the dual-purpose sensor, the apparatus can be simplified and the cost can be suppressed.

The low-resolution sensor, high-resolution sensor, and dual-purpose sensor include, for example, an area CCD that can read a frame image of a color photographic light-sensitive material at a time and a line CCD that can read an image in one line. Can be used.

In the case of reading at low resolution, for example, when the reading sensor includes a plurality of photoelectric conversion elements for photoelectrically converting reflected light, the moving means may perform the photoelectric conversion. This can be realized by moving the reading sensor in a predetermined direction during photoelectric conversion by the element.

That is, the reading sensor includes a plurality of photoelectric conversion elements, for example, photodiodes, for photoelectrically converting the reflected light, and the moving means includes, for example, when there is a gap between adjacent photoelectric conversion elements. The photoelectric conversion element is moved in the vertical direction and the horizontal direction so as to detect the light applied to the photoelectric conversion element. As a result, although the resolution is reduced, the amount of light to be irradiated does not need to be increased even when performing reflection reading.

In addition, if reading is performed every time movement is performed, not during accumulation of electric charges, reading at high resolution can be performed. Therefore, it is possible to use the same sensor for reading the transmitted light and the reflected light.

Further, as described in claim 6, the output from the adjacent photoelectric conversion element may be combined so as to be read at a low resolution.

By combining the outputs from the adjacent photoelectric conversion elements in this manner, the resolution is reduced, but the sensitivity can be apparently improved, and it is possible to perform reflection reading even if the irradiation light amount is not increased. I'm done.

According to the present invention, at least three kinds of photographic light-sensitive layers containing blue-sensitive, green-sensitive and red-sensitive photosensitive silver halide emulsions are provided on a light-transmitting support. An image processing apparatus for processing an image recorded on a color photographic light-sensitive material that has been processed so that a silver image is formed in each photographic light-sensitive layer after the image is exposed, wherein the color photographic light-sensitive material is A light source for irradiating light to the front and back sides of the color photographic light-sensitive material, and a read sensor for reading reflected image information by reflected light from the front and back sides of the color photographic light-sensitive material and reading transmitted image information by light transmitted through the color photographic light-sensitive material Extracting high-frequency component information from the transmitted image information read by the reading sensor, and extracting the extracted high-frequency component information and the reflected image information read by the reading sensor. It is characterized in that it comprises a generation means for generating image information form.

As described above, the light source emits light having a wavelength in the infrared region (IR light), for example. The reading sensor reads the reflected image information at a low resolution, for example, by the reflected light reflected from the front side and the back side of the color photographic photosensitive material by the light source. The reading sensor reads transmitted image information at a high resolution, for example, by transmitting light transmitted through the color photographic light-sensitive material by the light source. That is, as described above, the blue-sensitive layer,
In the case of a color photographic light-sensitive material in which a green sensitive layer and a red sensitive layer are laminated in this order, for example, B light is reflected by the silver image of the blue sensitive layer.
The image information is represented by R reflected by the silver image of the red sensitive layer.
The image information is read by the reading sensor. Further, the G image information can be obtained by subtracting the R image and the B image from the image information of the three layers by the transmitted light read from the reading sensor.

The generating means extracts high-frequency component information from the transmitted image information read by the reading sensor using, for example, a high-pass filter or the like, and combines the extracted high-frequency component information with the reflected image information to generate image information. The low-frequency component information may be extracted from the transmission image information, and the high-frequency component information may be extracted by subtracting the low-frequency component information from the transmission image information.

As described above, since the generating means generates image information by synthesizing the high-frequency component information extracted from the transmitted image information and the reflected image information, it is possible to appropriately perform image processing only on the high-frequency component information. Can be. For example, high-frequency components can be subjected to graininess suppression and sharpness processing.

Therefore, as described in claim 4, it is preferable that the generating means synthesizes the high frequency component information after further performing the sharpness processing. This sharpness processing is performed so that, for example, the ratio between input information and output information becomes a predetermined value (for example, 1) or more. Thereby, image information in which sharpness is enhanced can be obtained.

That is, the high frequency component information of the synthesized image information is information obtained from the transmission image information, and does not include the high frequency component information of the reflection image information. For this reason, an image in which sharpness is enhanced can be obtained. Further, since the sharpness enhancement processing is performed only on the transmission image information obtained from the reading sensor, color shift can be suppressed.

According to a third aspect of the present invention, the generating means further extracts low frequency component information from the reflected image information read by the reading sensor, and extracts the extracted low frequency component information and the high frequency component information. May be combined to generate image information.

This low frequency component information can be extracted by, for example, a low-pass filter. Thereby, image processing can be appropriately performed on each of the high frequency component information and the low frequency component. For example, low-frequency component information can be subjected to color correction processing, gradation conversion processing, and the like.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION A color photographic film is developed in black and white so that a silver image containing no dye information is produced, developed, dried without performing bleaching, fixing and washing with water.
An embodiment in which the present invention is applied to an image reading apparatus that reads a silver image recorded on a color photographic film before or after drying is described. When black and white development is performed, red light (R light), green light (G light),
Although light sources having various wavelengths of blue light (B light) can be used, a case where a silver image is read using infrared light (IR light) will be described in this embodiment. When reading an image in a state in which development is not stopped or in a state of development, use of R, G, and B light causes a problem that the silver halide is exposed to the read light. If used, that problem can be avoided.

FIG. 1 shows the overall configuration of the image processing system 10. As shown in FIG. 1, the image processing system 10 includes a magnetic information reading unit 12, a reference exposure unit 14,
Black and white developing section 16, buffer section 18, film scanner 2
0, an image processing device 22, a printer unit 24, and a processor unit 26.

The image processing system 10 reads a film image (silver image) recorded on a color photographic film such as a negative film or a reversal film (positive film), performs image processing, and converts the image after the image processing into photographic paper. For example, 135-size photographic film, 110-size photographic film, and photographic film having a transparent magnetic layer (240-size photographic film: so-called APS film), 120-size and 2-size photographic films
A film image of a photographic film having a size of 20 (Broni size) can be processed. Photographic film 2
8 is conveyed in the direction of arrow A in FIG. 1 with the emulsion side (B photosensitive layer side) facing up. In the image processing system, an image may be formed on heat-sensitive paper by heat, or an image may be formed on a recording medium such as plain paper by xerography or ink jet.

When the photographic film 28 to be processed is an APS film as shown in FIG. 2, the magnetic information reading section 12 records the magnetic information recorded on the magnetic layer 30 formed below the image frame of the APS film 28A. Used when reading. The magnetic information includes, for example, information on the film type such as film sensitivity information and DX code.

As shown in FIG. 2, unexposed areas which can be used freely by the user are provided at the leading end and the trailing end of the APS film 28A. In the present embodiment, this unexposed area is used as the reference exposure area 32. When the photographic film 28 is a 135-size photographic film, an unexposed portion existing on the leading or trailing end side of the film as shown in FIG.

The reference exposure section 14 performs reference exposure on a reference exposure area 32 to form image information used when determining image processing conditions. The image processing condition may be determined by reading the image information of the reference exposure area 32 after reading all the image frames after storing the data obtained by reading the image frames. If determined, the image processing can be performed while reading the image frame. Therefore, the reference exposure area 32 on the leading end side of the photographic film 28 should be subjected to the reference exposure so that the image processing conditions can be determined before reading the image frame. Is preferred.

The reference exposure section 14 is composed of an exposure section 34 and an LED driver 36 as shown in FIG. The exposure unit 34 is an LE in which a plurality of LEDs 38 are arranged.
A diffusion plate 42 is provided on the LED side of the D substrate 40, and a wedge 44 for generating a light intensity distribution along the film transport direction is provided on the light diffusion side of the diffusion plate 42.

The LED substrate 40 is divided into four regions as shown in FIG. 5, and LEDs 46R for emitting red light (R light) are arranged in the uppermost region in FIG.
Monochromatic exposure area), green light (G light) in the second area from the top
Are arranged (G single-color exposure section),
LE that emits blue light (B light) is located in the third area from the top
D46B are arranged (B monochromatic exposure section), and LEDs 46R, 46G, and 46B are alternately arranged in the lowermost area (gray exposure section).

It is preferable that the number of LEDs 46R, 46G and 46B be determined so that the light amount balance of R, G and B in the gray exposure portion is close to the standard daylight color temperature such as D65.

The LED board 40 is connected to the LED driver 36. Each LED 38 on the LED board 40
Light is emitted uniformly when a predetermined current is supplied from the ED driver 36. Further, the LED driver 36 can appropriately control the current supplied to each LED according to the film type by obtaining film sensitivity information from the magnetic information reading unit 12, for example.

The light emitted from each LED is diffused by the diffusion plate 42 and applied to the photographic film 28 via the wedge 44. The wedge 44 changes the amount of exposure to the photographic film 28. For example, as shown in FIG. 3, the wedge 44 continuously or stepwise moves from the upstream side to the downstream side in the transport direction (the direction of arrow A) of the photographic film 28. So that the amount of exposure is small. Note that the exposure amount may be increased continuously or stepwise. The upstream side of the wedge 44 in the transport direction of the photographic film 28 can be linearly exposed in a direction substantially orthogonal to the transport direction as shown by a line 48 in FIG. In addition, wedge 4
Instead of using 4, the exposure amount may be changed by gradually increasing the current supplied to each LED along the film transport direction.

The reference exposure area 32 of the photographic film 28 formed by the reference exposure section 14 having the above-described configuration is used to mix the R, G, and B lights, and the R, G, and B lights as shown in FIG. Light, ie, gray light, is used for reference exposure. In addition, linear exposure is performed in a direction substantially perpendicular to the transport direction of the photographic film 28. By detecting this line 48 as a trigger line, it can be detected that the reference exposure area 32 has been subjected to the reference exposure.

The reference exposure section 14 may be constituted by using a light source such as a halogen lamp instead of the LED as shown in FIG. 7, for example. The reference exposure unit 14 shown in FIG. 7 includes a halogen lamp 50, and a shutter 52 is arranged on the light irradiation side of the halogen lamp 50. On the light emission side of the shutter 52, a diffusion box 56 in which diffusion plates 54 are attached vertically, a color separation filter 58 for separating light into R light, G light, and B light, and the wedge 44 described above are arranged in this order. Have been.

The color separation filter 58 includes a filter that transmits only the R light of the incident light, a filter that transmits only the G light of the incident light, and a filter that transmits only the B light of the incident light. It is arranged at a site corresponding to the 5 LED array sites. The LEDs 46R, 46
It is preferable to dispose a color temperature conversion filter such as D65, which is close to a standard daylight color temperature, in a portion where G and 46B are alternately arranged. Thus, the same reference exposure as in FIG. 6 can be performed. Further, in order to reduce the cost, the correction may be performed based on the relationship between the color temperature of the halogen lamp and the color temperature of D65 without disposing a filter.

The black-and-white developing section 16 performs black-and-white development by applying a developing solution for black-and-white development to the photographic film 28. As shown in FIG. 8, the black-and-white developing unit 16 includes a jet tank 6 for jetting a developing solution onto the photographic film 28.
2 is provided.

At the lower left of the injection tank 62, a developer bottle 64 for storing a developer to be supplied to the injection tank 62 is disposed, and the developer is filtered on the upper portion of the developer bottle 64. A filter 66 is provided. A liquid feed pipe 70 in which a pump 68 is arranged on the way connects the developer bottle 64 and the filter 66.

Further, on the right side of the injection tank 62, a sub tank 7 for storing the developing solution sent from the developing solution bottle 64 is provided.
2 from the filter 66 to the liquid feed pipe 74
Extends to the sub tank 72.

Accordingly, when the pump 68 is operated, the developing solution is sent from the developing solution bottle 64 to the filter 66 side, and the filtered developing solution passing through the filter 66 is sent to the sub-tank 72, where The liquid is once stored.

A liquid feed pipe 76 for connecting between the sub tank 72 and the injection tank 62 is disposed between them, and a filter 66, a sub tank 72, and a liquid feed pipe 76 are provided.
The developing solution sent from the developing solution bottle 64 by the pump 68 via the above-mentioned means fills the injection tank 62.

A tray 80 connected to the developer bottle 64 by a circulation pipe 78 is disposed below the injection tank 62. The tray 80 collects the developer overflowing from the injection tank 62, and the circulation pipe 78 To return to the developer bottle 64. In addition, this circulation pipe 7
Numeral 8 is connected to the sub-tank 72 in a state of protruding and extending into the sub-tank 72, and is configured to return unneeded developer accumulated in the sub-tank 72 to the developer bottle 64.

Further, as shown in FIG. 9 and FIG.
A nozzle plate 82 formed by bending an elastically deformable rectangular thin plate is provided at a portion facing the transport path E of No. 8.

As shown in FIGS. 9 and 10, the nozzle plate 82 has a longitudinal direction of the nozzle plate 82 along a direction intersecting the conveying direction A of the photographic film 28.
At a certain interval, a plurality of nozzle holes 84 (for example, several tens μm in diameter)
m) are formed over the entire width of the photographic film 28, thereby forming a nozzle row extending linearly. The plurality of nozzle rows are arranged on the nozzle plate 82 in a zigzag pattern.

That is, a plurality of nozzle rows formed by a plurality of nozzle holes 84 arranged linearly are provided so as to extend in the longitudinal direction of the injection tank 62, respectively.
The developing solution filled in the injection tank 62 from the nozzle holes 84 constituting these nozzle rows is used for the photographic film 28.
It can be discharged so as to be injected to the side.

When the developing solution is sprayed from the spray tank 62, the photographic film 2 conveyed at a substantially constant speed.
8 is developed in black and white.

The buffer 18 absorbs a speed difference between the speed at which the photographic film 28 is transported at a substantially constant speed in the black-and-white developing unit 16 and the speed at which the photographic film 28 is transported by the film carrier 86 described later. . When the transport speed in the black-and-white developing unit 16 and the transport speed in the film carrier 86 are the same, the buffer unit can be omitted.

The film scanner 12 has a black and white developing section 16
It reads an image recorded on the photographic film 28 developed by the above, and outputs image data obtained by the reading. As shown in FIGS. 1 and 11, a film carrier 86 is provided.

The upper side of the film carrier 86 is shown in FIG.
As shown in the figure, LEDs 88 are arranged in a ring shape, and an illumination unit 90A for irradiating the photographic film 28 with light is arranged. The light emitted from the illumination unit 90A has a wavelength in the infrared region as shown in FIG.
0 nm) (IR light). This lighting unit 90
A is driven by the LED driver 92.

On the upper side of the illumination unit 90A, an image forming lens 94A for forming an image of the light reflected on the layer B of the photographic film 28 as shown in FIGS.
The area CCD 96A for detecting light reflected from the B layer of
They are arranged in order along the optical axis L. Area CCD 96
A is a monochrome CCD in which CCD cells (photoelectric conversion cells) 180 as a large number of photoelectric conversion elements each having sensitivity in the infrared region are arranged in a matrix, as shown in FIGS. The light receiving surface is arranged so as to substantially coincide with the image forming point position of the image forming lens 94A. This CC
The D cell is constituted by, for example, a photodiode. Further, the area CCD 96A is arranged on a pixel shift unit 98A as a moving means as shown in FIG. The area CCD 96A constitutes the reading sensor of the present invention.

As shown in FIG. 18, piezo elements 101AX and 101AY driven by a piezo driver 99A are connected to the pixel shift unit 98A. The piezo driver 99A causes the piezo elements 101AX, 1
The pixel shift unit 98A, that is, the area CCD 96A, can be shifted in the X direction and the Y direction by oscillating 01AY in the X direction and the Y direction in FIG.

Thus, for example, if the resolution of the area CCD 96A is 1.5 million pixels, as shown in FIG. 20C, the X1 direction, Y1 direction, X2 direction
By sequentially moving the area CCD 96A in the direction and the Y2 direction to read the image, the image can be read at four times the resolution, that is, 6 million pixels.

The area CCD 96A and the imaging lens 9
4A, a black shutter 100A is provided.

The area CCD 96A is a CCD driver 10
It is connected to the scanner control unit 104 via 2A.
The scanner control unit 104 includes a CPU, a ROM (for example, a rewritable ROM), a RAM, and an input / output port, and these are connected to each other via a bus or the like. The scanner control unit 104 is a film scanner 2
0 controls the operation of each unit. In addition, the CCD driver 10
2A generates a drive signal for driving the area CCD 96A, and controls the drive of the area CCD 96A.

Below the film carrier 86, an illumination unit 90B, an imaging lens 94B, an area CCD 96B arranged on a pixel shift unit 98B, and a CCD driver 102B are arranged in this order. These are the illumination unit 90A, the imaging lens 94A, and the area CC described above.
D96A and the CCD driver 102A have the same configuration, but the area CCD 96B is a part of the IR light applied to the photographic film 28 by the illumination unit 90B and reflected by the R layer of the photographic film 28 as shown in FIG. And the transmitted light transmitted through the photographic film 28 is detected from the light applied to the photographic film 28 by the illumination unit 90A. The area CCD 96B corresponds to the reading sensor of the present invention.

A light correction ND filter 106 is arranged between the illumination unit 90B and the film carrier 86. The ND filter 106 for bright correction is shown in FIG.
As shown in FIG. 3A, the transmission light except for one of a plurality of (five in this embodiment) openings 110 provided on the turret 108 which is rotatable in the direction of arrow B is provided. Filters 112A to 112D with different rates
Are fitted respectively.

The film carrier 86 is a photographic film 2
The photographic film 28 is positioned such that the center of the screen of the image recorded in the image 8 is positioned at a position (reading position) that coincides with the optical axis L.
Is transported.

The film carrier 86 is provided with a DX code reading sensor 114, a frame detection sensor 116, and light correction reflectors 118A and 118B. The DX code reading sensor 114 has a 13
DX optically recorded on 5 size photographic film 28
Read code 120. The frame detection sensor 116 detects an image frame position of the photographic film 28. As a result, the center of the screen of the image is positioned at a position corresponding to the optical axis L.

The light correction reflectors 118A and 118B are arranged at positions facing each other with the photographic film 28 interposed therebetween. As shown in FIG. 14B, the turret is rotatable along the arrow C direction. One of the openings 1 (five in this embodiment) provided on the
With the exception of 24, the reflection plates 126A to 126A
126D are respectively fitted.

The photographic film 28 is a film carrier 86
And the image is positioned at a position (reading position) where the center of the screen of the image coincides with the optical axis L. Further, the scanner control unit 104 keeps the aperture 124 of the light correction reflectors 118A and 118B in a state where the image is positioned at the reading position.
The turrets 122 and 108 are rotated so that the opening 110 of the ND filter 106 for bright correction is positioned on the optical axis L, and the area C corresponding to a predetermined reading condition is
The charge accumulation times t1, t2, and t3 of the CDs 96A and 96B are set in the CCD drivers 102A and 102B, respectively. The area CCDs 96A and 96B charge the reflected light from the emulsion surface side (B layer side) of the photographic film 28, the reflected light from the base surface side (R layer side), and the transmitted light transmitted through the photographic film 28. The photoelectric conversion is performed during the storage time, and the photoelectrically converted charge is stored.

By the way, in an area where the output signal of the CCD has a linearity, the S / N ratio becomes better when reading is performed under bright conditions, and the S / N ratio becomes worse when reading is performed under dark conditions. Therefore, the brightest point of the read image is the saturation point of the CCD (the brightest point at which linearity can be obtained).
It is desirable to set the reading conditions so as to be close to the above, but this is difficult in reflection reading.

Therefore, in this embodiment, in the reflection reading, during charge accumulation, as shown in FIG.
The pixel is sequentially shifted in the direction, the Y1 direction, the X2 direction, and the Y2 direction. That is, charges in a region surrounded by a solid line in FIG. Thereby, substantially 1/4
And the reading condition can be set such that the brightest point of the read image is close to the saturation point of the CCD without irradiating a large amount of light.
The N ratio can be improved. Further, the apparent opening of the light receiving section of the CCD is widened, so that aliasing can be suppressed. In the case of transmission reading, normal pixel shift is performed, and reading at high resolution is performed.

That is, as shown in FIG. 17 (I), when the illumination unit 90A is turned on by the scanner control unit 104, the B layer side of the photographic film 28 is irradiated with IR light.
The light reflected on the layer B of the photographic film 28 is detected by the area CCD 96A as shown in FIG. 17A (specifically, photoelectrically converted charges are accumulated). During this charge accumulation, the piezo driver 99A operates as shown in FIG.
As shown in (C), the piezo elements 101AX and 101AY
Is vibrated to sequentially move the area CCD 96A in the X1, Y1, X2, and Y2 directions as shown in FIG. The electric charge thus accumulated is as shown in FIG.
As shown in (D), the signal representing the amount of reflected light is the area C
Read from CD 96A.

At the same time, the piezo driver 99B
(Not shown), as shown in FIGS. 17F and 17G, the piezo elements 101BX and 101BY (not shown) are vibrated to move the area CCD 96B to X as shown in FIG.
It is sequentially moved in one direction, Y1 direction, X2 direction, and Y2 direction. Then, for each movement, the light transmitted through the photographic film 28 is detected by the area CCD 96B as shown in FIG.
As shown in (H), the signal representing the transmitted light amount is the area C
Read from CD96B.

When the detection of the transmitted light and the reflected light of the R layer is completed, the illumination unit 90B is turned on by the scanner control unit 104 as shown in FIG.
17B, the base layer side is irradiated with IR light, and the light reflected on the R layer of the photographic film 28 is reflected in the area C as shown in FIG.
It is detected by the CD 96B (specifically, photoelectric conversion). During the charge accumulation, the piezo driver 99B causes the piezo element 101B as shown in FIGS.
FIG. 2 shows the area CCD 96B by vibrating X and 101BY.
0 (B), X1 direction, Y1 direction, X2 direction,
It is sequentially moved in the Y2 direction. The charge thus accumulated is read from the area CCD 96B as a signal representing the amount of reflected light as shown in FIG.

Thus, the reflected light of the R layer and the B layer is read at a low resolution, and the transmitted light is read at a high resolution.

The amount of light emitted by the illumination units 90A and 90B, the lighting times t4 and t5, and the area C
Charge accumulation time t1, t2, t by CD96A, 96B
3 is optimally set according to the film type and the like by a setup calculation by the control unit 140 described later.

The amount of light reflected by the B layer changes according to the amount of developed silver contained in the B layer (blue photosensitive layer), that is, the amount of silver image in the B layer. Therefore, photoelectric conversion of the light reflected by the B layer is equivalent to reading image information of a yellow dye image obtained when color development is performed instead of black and white development. Similarly, photoelectrically converting the light reflected by the R layer (red-sensitive layer) corresponds to reading image information of a cyan dye image obtained when color development is performed.
Also, photoelectrically converting the transmitted light corresponds to reading an image obtained by mixing a yellow dye image, a magenta dye image and a cyan dye image in a green photosensitive layer obtained by color development.

The signals output from the area CCDs 96A and 96B are amplified by amplifier circuits 128A and 128B, respectively, are converted into digital data representing the amount of reflected light by A / D converters 130A and 130B, and are correlated double sampling circuits ( CDS) 132A and 132B. The CDSs 132A and 132B sample the feedthrough data indicating the level of the feedthrough signal and the pixel data indicating the signal level of each pixel, respectively, subtract the feedthrough data from the pixel data for each pixel, and calculate the operation result (each Data corresponding to the amount of charge stored in the CCD cell) are sequentially output to the image processing device 22 as image data.

The image data output from the CDSs 132A and 132B is input to the light / dark correction units 134A and 134B, respectively. The light / dark correction units 134A and 134B perform light / dark correction based on predetermined dark correction data and light correction data.

The light / dark correction section 134 A is provided with an area CCD 96.
Data (data representing the dark output level of each cell of the area CCD 96A) input to the light / dark correction unit in a state where the light incident side of A is shielded by the black shutter 100A is stored as dark correction data in a memory (not shown) for each cell. The dark correction is performed by reducing the dark output level of the cell corresponding to each pixel from the input image data. The setting of the dark correction data is performed, for example, at the start of the inspection of the apparatus, at a predetermined time interval, or at each scan, and is preferably performed at a frequency capable of correcting the dark output level fluctuation. The darkness correction by the lightness / darkness correction unit 134B can be performed in the same manner as described above.

When the light correction is performed on the image data of the image recorded on the photographic film 28 that has been subjected to the normal color development by the light / dark correction section 134A, first, a white plate or the like having a high reflectance is used. And the reflected light is read by the area CCD 96A, and the gain of each cell is determined based on the input data (the density variation of each pixel represented by this data is caused by the variation of the photoelectric conversion characteristics of each cell). Is determined and stored in a memory (not shown) as bright correction data. Then, the input image data of the frame image to be read is corrected for each pixel according to the gain determined for each cell. The brightness correction by the brightness correction unit 134B can be performed in the same manner as described above. When the transmitted light from the illumination unit 90A is read and the brightness is corrected, the brightness correction is performed in a state where the light from the illumination unit 90A is transparent.

However, when the brightness correction is performed on the image data of the image recorded on the photographic film 28 that has been subjected to the black and white development, when the white plate is used, or when the brightness correction is performed in a state where the photographic film 28 is left out, the photographic film The image density is too bright as compared with the image density recorded in No. 28, so that the bright correction cannot be performed properly. For this reason, it is preferable that the density of the unexposed portion of the photographic film 28 be used as the reference density for light correction, and that the light correction be performed such that a reflector or a filter close to this is located on the optical axis L. As a result, the brightness correction of the photographic film 28 that has been subjected to the black and white development can be properly performed. The selection of the reference density for light correction is performed by the control unit 140 described later.
This is performed by the setup calculation.

Further, the brightness correction may be performed such that the unexposed portion of the photographic film 28 is located on the optical axis. As a result, the ND filter 106 for bright correction and the reflectors 118A and 118B for bright correction become unnecessary, and the cost can be reduced. In this case, the charge accumulation time and the light amount are set so as to be close to the saturation point (the brightest point in a state where linearity can be obtained) of the area CCDs 96A and 96B in reading the unexposed area. Is stored in a memory (not shown) as bright correction data.

When reading at a high S / N, prescanning is performed for each frame, and the charge accumulation time and light amount may be set using the brightest point of the frame, or the unexposed light may be set. The charge accumulation time and the light amount are set based on the read data of the unit, and if it is determined that the exposure is an overexposure negative by the first scan, the light accumulation condition is increased (the charge accumulation time is increased and the light amount is increased). You may scan again.

The image data subjected to the light / dark correction processing by the light / dark correction units 134A and 134B are output to the image processing device 22, respectively.

As shown in FIG. 1, the image processing device 22
A frame memory 136, an image processing unit 138, and a control unit 140 are provided. The frame memory has a capacity capable of storing the image data of the frame image of each frame, and the image data input from the film scanner 20 is stored in the frame memory 136. The image data input to the frame memory 136, that is, the base layer reflection reading data, the emulsion surface reflection reading data, and the transmission reading data are output to the image processing unit 138 and the control unit 140 as shown in FIG.

The image processing section 138 performs various image processing in accordance with the processing conditions determined and notified for each image by the control section 140, and the base layer reflection reading data and the emulsion surface reflection reading data have a low resolution. Since the read data and the transparent read data are read at a high resolution, first, the enlargement / reduction units 157A, 157B, and 157C match the pixel position and the image size of each data.
That is, when the transmission read data input with the electronic scaling factor being m is electronically scaled by the scaling unit 157C,
In the scaling units 157A and 157B, electronic scaling is performed at an electronic scaling factor twice as large as m. As a result, the pixel position and image size of the base layer reflection read data and emulsion surface reflection read data read at low resolution and the transmission read data read at high resolution can be matched.

The control unit 140 includes a CPU 142, a ROM 1
44 (for example, ROM whose storage contents can be rewritten), RAM
146, an input / output port (I / O) 148, a hard disk 150, a keyboard 152, a mouse 154, and a monitor 156, which are connected to each other via a bus. The CPU 142 of the control unit 140 calculates (sets up) various image processing parameters to be performed in the image processing unit 138 based on the read data of the reference exposure unit input from the frame memory 136, and sends it to the image processing unit 138. Output. This calculation is performed as follows.

For example, a conversion characteristic f1 for converting the reflection density of R into the transmission density of R from the read data of the reflected light of the R single-color exposure area of the reference exposure area 32 and the read data of the transmitted light of the R single-color exposure area. Ask for. As described above, since the exposure amount gradually decreases from the upstream side in the transport direction of the photographic film 28 in each exposure area, data of high density to low density in each exposure area can be obtained. Therefore, the conversion characteristic f
1 is to obtain a conversion curve for converting the reflection density of R into the transmission density of R by, for example, calculating a value obtained by dividing the read data of the reflected light from the read data of the transmitted light for each density region. it can. Here, when the reflection density of R is D _HR and the transmission density of R is D _TR , D _TR = f1
(D _HR ).

Similarly, the CPU 142 reads the reflected light reading data of the B monochromatic exposure area of the reference exposure area 32,
A conversion characteristic f2 for converting the reflection density of B into the transmission density of B is obtained from the read data of the transmitted light in the B monochromatic exposure area. Here, the reflection density of B is D _HB , and the transmission density of B is D
_{When TB} is set, D _TB = f2 (D _HB ).

The control unit 140 calculates the conversion characteristic f
1 and f2 are output to LUTs (look-up tables) 158A and 158B of the image processing unit 138, respectively.
In the LUTs 158A and 158B, the input R image, B
Each of the read image data is log-converted into reflection density data, and the converted reflection density data is converted into conversion characteristics f1, f
2 is converted into transmission density data. When the conversion characteristic is obtained and converted into the transmission density in this way, the reflection density is about twice the transmission density in the middle density area because the light passes through the layer twice, and the density is saturated in the high density area. For example, when the reflection reading and the transmission reading are mixed, the gray balance cannot be properly corrected when the reflection reading and the transmission reading are mixed. In the LUT 158C, the input transmission reading data is log-converted to obtain transmission density data.

The transmission density data obtained in this manner is stored in LPFs (low-pass filters) 159A, 159B,
The low frequency component is extracted by 159C and output to the MTX (matrix) circuit 160. In addition, LPF159C
The transmission reading data from which the low frequency components have been extracted by
It is also output to the subtraction unit 161. In the subtraction unit 161, the LU
The transmission reading data of the low-frequency component output from the LPF 159C is subtracted from the transmission density data before the low-frequency component output from T158C is extracted to obtain transmission density data of the high-frequency component.

The transmission density data of the high frequency component is subjected to graininess suppression processing and sharpness enhancement processing by the sharpness enhancement section 168. At this time, since the sharpness enhancement processing is performed using only the data from the transmission reading signal without using the data from the reflection reading signal, an image with higher sharpness can be obtained. Further, since the signal of the high-frequency component is obtained from the transmission reading signal obtained from one area CCD 96B, the color shift can be suppressed.

Note that, for the graininess suppression processing and the sharpness enhancement processing, for example, a method in which the unsharp masking processing is realized by a non-linear LUT can be used.
As shown in, by cutting the signal whose absolute value of the input signal is equal to or less than a predetermined threshold th, the granularity can be suppressed,
The sharpness is enhanced by setting the ratio between the input signal and the output signal whose absolute value is equal to or greater than the threshold value th, that is, the slope to, for example, 1 or more. Further, for example, Japanese Patent Application Laid-Open No. 9-22460
By using the method described in Japanese Patent Application Laid-Open Publication No. H10-260, granularity suppression and sharpness enhancement can be performed with higher accuracy.

The signal of the high frequency component which has been subjected to the sharpness enhancement processing is synthesized by the addition section 167 with the low frequency signal subjected to each processing by the MTX circuit 160, the LUT 162, and the automatic dodging section 166 to be described later.

That is, the original signal of the transmission density data is represented by S,
When the low-frequency component signal is U, the corrected image signal S ′
Is represented by the following equation.

S ′ = U + f (SU) (1) Here, the function f is to cut off the signal whose absolute value of the input signal is equal to or less than the predetermined threshold th as shown in FIG.
The function is such that the ratio (slope) of the input signal and the output signal whose absolute value is equal to or greater than the threshold value th is 1 or more.

The corrected image signal S 'may be obtained as follows. That is, as shown in FIG. 23, signals from LUTs 158A to 158C are
160 to the LUT 15 by the LPF 159.
Only the low frequency component signal is extracted from the original signal output from 8C. Then, the LUT 158C
The low-frequency component signal is subtracted from the original signal output from, and a high-frequency component signal is extracted, and the extracted high-frequency component signal is subjected to sharpness enhancement by a sharpness enhancement unit 168. Then, the signal of the high-frequency component subjected to the sharpness enhancement processing by the addition unit 167 and the MTX
The circuit 160, the LUT 162, and the automatic dodging unit 166 combine the low-frequency signal subjected to each processing.

In this case, the corrected image signal S 'is expressed by the following equation.

S '= S + f (SU) (2) By the way, since the transmission reading data is the transmission density data of the R, G, and B layers, the transmission density data of the R, G, and B layers is calculated. If the D _TRGB, transmission density data D _TG of G can be expressed by _{D TG = D TRGB -D TR -D} TB. This calculation is performed by the MTX circuit 160.

The reflection density of the R layer read from the base layer side and the reflection density of the B layer read from the emulsion surface side in the G monochromatic exposure area become zero assuming no color mixture. . This is because the R layer and the B layer in the G monochromatic exposure region do not reflect the R layer and the B layer because no developed silver is present in the R layer and the B layer. However, the reflection read data of the R layer and the B layer are affected by the lower layer (G in the present embodiment), so that color mixing occurs, and if this is the case, turbid color reproduction will result. Similarly, assuming that there is no color mixture, the reflection density of the B layer, the transmission density of the G layer, and the transmission density of the R layer and the G layer in the B monochromatic exposure area are zero, assuming no color mixture. Become. However,
Actually, as described above, each layer is affected by the other layers, so that color mixing occurs.

Thus, by determining the transmission density of each layer in each monochromatic exposure area, the effect of color mixing is eliminated as described below. First, a color mixing coefficient aij representing the degree of color mixing of the j color in the i color is calculated. Where i, j
= 1,2,3, 1 represents R, 2 represents G, and 3 represents B.

When the data of the transmission densities of R, G, and B when there is no color mixture are R, G, and B, R, G, and B when there is color mixture
The transmission density data R ′, G ′, B ′ for G and B are expressed by the following equations.

R ′ = R + a12 · G + a13 · B G ′ = a21 · R + G + a23 · B B ′ = a31 · R + a32 · G + B (3)

[0101]

(Equation 1)

Here, the color mixing coefficients a12 and a32 can be obtained from the transmission density D _TR of the R layer and the transmission density D _{TB of the} B layer in the G single color exposure area.
3 and a23 can be obtained from the transmission density D _TR of the R layer and the transmission density D _{TG of the} G layer in the B monochromatic exposure area, and the color mixing coefficients a21 and a31 are the transmission density D _TB of the B layer in the R monochromatic exposure area. And the transmission density D _{TG of the} G layer.

The CPU 142 calculates a color correction coefficient by calculating an inverse matrix of the equation (3) constituted by the above-described color mixing coefficients,
Output to TX circuit 160. An arbitrary color chart is exposed in advance without performing R, G, and B monochromatic exposures, and a color correction coefficient is optimized and obtained by a least square method or the like from the read data and a color reproduction target value. You may. Further, in the above description, color correction is performed using a 3 × 3 matrix, but high-precision color correction may be performed using a 3 × 10 matrix.

The MTX circuit 160 calculates R, G, and B data without color mixture using the correction coefficient,
162. The LUT 162 performs gray balance correction and contrast correction. In the CPU 142,
The parameters for performing the gray balance correction and the contrast correction are determined.

That is, the conversion characteristic f3 is obtained from the read data of the gray exposure area of the reference exposure area 32 and the predetermined target gray density. However, in general photography, the gray balance cannot be sufficiently corrected from the read data of the gray exposure area of the reference exposure area 32 because the image is captured by light sources having various color temperatures. For this reason, the light source correction coefficient of the photographing light source is estimated for each frame, and the LUT
162. That is, the LUT 162 performs gray balance correction using the conversion characteristic f3 as a reference of the grayscale conversion characteristic, and further performs grayscale balance correction by performing correction using a light source correction coefficient. Further, since the contrast of the black-and-white development is different from the contrast of the reference color development, a contrast correction for correcting the contrast is performed.

The image data on which the gray balance correction and the contrast correction have been performed are subjected to dodging processing by the automatic dodging unit 166. Then, the image data of the low frequency component subjected to the automatic dodging process is combined with the image data of the high frequency component subjected to the sharpness enhancement process by the sharpness enhancement unit 168 in the adding unit 167. The LPF 159, the subtractor 161 and the adder 16
7. The sharpness enhancement unit 168 corresponds to the generation unit according to the present invention.

The image data subjected to the image processing in this manner is converted into image data to be displayed on the monitor 154 by the 3D (three-dimensional) LUT color conversion unit 170, and is also converted by the 3DLUT conversion unit 172 to the printer unit. At 24, it is converted into image data to be printed on photographic paper.

The printer unit 24 includes, for example, an image memory,
It is configured to include R, G, and B laser light sources, a laser driver that controls the operation of the laser light sources, and the like (all not shown). The recording image data input from the image processing device 22 is read out after being once stored in the image memory,
It is used for modulating R, G, B laser light emitted from a laser light source. The laser light emitted from the laser light source is
Scanning is performed on the printing paper via a polygon mirror and an fθ lens, and an image is exposed and recorded on the printing paper. The photographic paper on which the image has been exposed and recorded is sent to the processor unit 26 where color development is performed.
Each processing of bleach-fixing, washing with water and drying is performed. As a result, the image recorded on the photographic paper by exposure is visualized.

Next, the operation of the present embodiment will be described by taking as an example the case of processing an APS film.

First, prior to the processing of the photographic film 28, the above-described light / dark correction is performed, and the light correction data and the dark correction data are set in a memory (not shown) in the light / dark correction units 134A and 134B.

Then, the photographed film (APS)
When the film (film) 28 is conveyed in the direction of arrow A in FIG. 1, the magnetic information reading unit 12 reads the magnetic information recorded on the magnetic layer 30, that is, the information on the film type such as the film sensitivity.

Next, the photographic film 28
In FIG. 4, the reference exposure area 32, which is an unexposed area provided on the leading end side of the photographic film 28, is subjected to reference exposure from R to G to B in each color of R, G, B, and gray from a low density area to a high density area. You.

The photographic film 28 subjected to the reference exposure in the reference exposure section 14 is developed in black and white by the black and white developing section 16. Thus, the silver halide exposed by the photographing in each of the R, G, and B layers of the photographic film 28 is developed, and a silver image of each color is formed.

The black-and-white developed photographic film 28 is conveyed to the film scanner 20 via the buffer unit 18, and
When the reference exposure area 32 is detected by the frame detection sensor 116, the reference exposure area 32 is positioned such that the center of the reference exposure area 32 is located on the optical axis L.

Then, the turrets 108 and 122 are rotated by the scanner control unit 104 such that the opening 110 of the bright correction ND filter 106 and the openings 124 of the bright correction reflectors 118A and 1118B are located on the optical axis L. Let it.

Next, the scanner control unit 104 applies the charge accumulation time t1 to the CCD drivers 102A and 102B.
t2 and t3 are set respectively, and the lighting units 90A and 90B
Is turned on at lighting times t4 and t5, and the photographic film 28 is irradiated with IR light. As a result, the area CCDs 96A, 9A
The reference exposure area 32 is read by 6B. That is, the reflected light of the B layer is detected by the area CCD 96A, the reflected light of the R layer, and the transmitted light of each layer are detected by the area CCD 96B.

Each detection signal is supplied to the amplifier circuits 128A and 128A.
A / D converters 130A, 13A
0B, each is converted into digital data, and CDS1
Brightness / darkness correction units 134A, 134 via 32A, 132B
B, and the brightness correction processing is performed by the brightness correction units 134A and 134B.

The image data subjected to the light / dark correction processing is output to the frame memory of the image processing device 22,
Output to 0. The CPU 142 of the control unit 140 determines the conversion characteristic f1 for converting the reflection density of R into the transmission density of R from the read data of the reflected light and the read data of the transmitted light of the R single-color exposure area of the reference exposure unit 32. A conversion characteristic f2 for converting the reflection density of B into the transmission density of B is obtained from the read data of the reflected light and the read data of the transmitted light in the B monochrome exposure area of the unit 32, and the LUT 158
A, set to 158B.

Next, the CPU 142 determines the conversion characteristics f1, f
A color mixing coefficient is calculated from the transmission density data of each single-color exposure area obtained in step 2, and an inverse matrix of a matrix composed of the color mixing coefficients is calculated to obtain a color correction coefficient, which is output to the MTX circuit 160. Next, the CPU 142 obtains a conversion characteristic f3 from the read data of the gray exposure area of the reference exposure area 32 and a predetermined target gray density, and sets the conversion characteristic f3 in the LUT 162.

In this way, color correction, gray balance,
Parameters for correcting contrast and the like are calculated based on the reference exposure data, and set in the image processing unit 138.

When the reading of the reference exposure area 32 is completed, the image frame 1 is positioned so as to be positioned on the optical axis L, and the image frame 1 is read. That is, reflection reading of the base surface side of the photographic film 28 is performed at low resolution by the area CCD 96A, and the area CCD 96B
Accordingly, the reflection reading on the base surface side of the photographic film 28 is performed at low resolution, and the reading of transmitted light is performed at high resolution.
These read data are output to the image processing device 22 after being subjected to light / dark processing and the like.

In the image processing device 22, first, the scaling unit 15
7A, 157B and 157C, the pixel position and the image size of each data are matched. That is, the scaling unit 157
In C, when the transmission read data input with the electronic scaling factor being m is electronically scaled, the scaling units 157A and 157
In B, the electronic magnification is changed at an electronic magnification twice as large as m. As a result, the pixel position and image size of the base layer reflection read data and emulsion surface reflection read data read at low resolution and the transmission read data read at high resolution can be matched.

Then, the image processing section 138 performs image processing under the conditions set by the control section 140. That is, the reflection density data of the input R image and B image are each log-converted by the LUTs 158A and 158B, and the converted data is converted into transmission density data by the conversion characteristics f1 and f2. Also, the input transparent reading data is log-converted by the LUT 158C.

Next, each transmission density data is stored in the LPF159
A, 159B and 159C extract low frequency components,
Output to MTX circuit 160. In addition, LPF159C
The transmission reading data from which the low frequency components have been extracted by
It is also output to the subtraction unit 161. The subtraction unit 161 uses the LUT
The transmission density data of the low-frequency component output from the LPF 159C is subtracted from the transmission density data before the low-frequency component output from the 158C is extracted to obtain transmission density data of the high-frequency component. The transmission density data of the high frequency component is subjected to graininess suppression processing and sharpness enhancement processing by the sharpness enhancement unit 168.

On the other hand, each image data of the low frequency component is color-corrected by the MTX circuit 160 using a color correction coefficient.
R, G, and B data without color mixture are calculated. Then, the LUT 162 performs gray balance and contrast correction using the conversion characteristic f3 as a reference of the gradation conversion characteristic. The correction of the gray balance is performed in a form including the correction of the gradation balance by the light source correction coefficient as needed.

The image data on which the gray balance has been corrected is enlarged / reduced to a predetermined magnification by the enlargement / reduction unit 164, subjected to the dodging process by the automatic dodging unit 166, and subjected to the automatic dodging process to the low-frequency component. Are combined with the image data of the high-frequency component subjected to the sharpness enhancement processing by the sharpness enhancement section 168 in the addition section 167.

The image data that has been subjected to the image processing in this manner is output to the monitor 154 by the 3DLUT color conversion unit 170.
Is converted to image data for display on
The LUT conversion unit 172 converts the image data into image data to be printed on photographic paper in the printer unit 24.

The image data subjected to the image processing is exposed to photographic paper by the printer unit 24. The photographic paper exposed according to the image data is sent to the processor section 26 and subjected to color development, bleach-fixing, washing and drying. As a result, the image recorded on the photographic paper by exposure is visualized. In this way, the images recorded in the image frames are sequentially read, subjected to image processing, and printed on photographic paper.

As described above, in the present embodiment, in reflection reading, pixel shift is performed during charge accumulation.
As a result, it is possible to set the reading condition so that the brightest point of the read image is close to the saturation point of the CCD without irradiating a large amount of light, The S / N ratio can be improved. Further, the apparent opening of the light receiving section of the CCD is widened, so that aliasing can be suppressed.

Further, at the time of reflection reading, sharpness enhancement processing is performed using only data from the transmission reading signal without using data from the reflection reading signal, so that an image with higher sharpness can be obtained. .
Further, since the signal of the high-frequency component is obtained from the transmission reading signal obtained from one area CCD 96B, the color shift can be suppressed.

In the above description, an example in which a silver image is formed by black-and-white development has been described. However, a silver image may contain dye image information as long as it is substantially a silver image, and may be 60% or more of the image density. May be derived from developed silver.
Therefore, a silver image containing dye information obtained by color-developing a color film may be used.

When a color film is color-developed, the silver image containing the dye information can be read only by using infrared light without reading the dye image. An upper layer light source for irradiating the upper photosensitive layer with light of a dye and a complementary color contained in the silver image in the layer, and a lower layer photograph of the dye and complementary light contained in the silver image of the lower photographic photosensitive layer in the lower photographic photosensitive layer A light source for the lower layer that irradiates the photosensitive layer side, and a light of a complementary color to the dye contained in the silver image in the photographic photosensitive layer of the intermediate layer is irradiated to the upper photographic photosensitive layer side or the lower photographic photosensitive layer side. A dye image may be read by providing a light source for the intermediate layer and a reading sensor for reading image information by light reflected from the upper and lower layers of the color photographic film and light transmitted through the color photographic film. Specifically, image information on the cyan dye image and the silver image in the red-sensitive layer is obtained by detecting the reflected light using the R light, and the green light is detected by detecting the transmitted light using the G light. Information including image information on the magenta dye image and the silver image in the photosensitive layer is obtained. By detecting the reflected light using B light, the image information on the yellow dye image and the silver image in the blue photosensitive layer can be obtained. can get. Since the density of the B image is high due to the inherent absorption of silver halide, and because the yellow filter remains, the reading load of reflection reading is considered to be lighter than that of transmission reading. To speed up development, fixation,
It is effective when reading without bleaching is desired.

In this case, the lighting units 90A and 90B may be configured as follows. That is, for example, as shown in FIG. 22A, the lighting unit 90A is configured by arranging an LED 88B that emits B light and an LED 88G that emits G light in a ring shape and arranging the LEDs 88B and 8D.
8G may be turned on alternately, and the lighting unit 90B may be arranged by disposing the LEDs 88R that emit R light in a ring shape. In the image processing unit 138, the base surface reflection read data shown in FIG. 19 is replaced with R light reflection read data, the emulsion surface reflection read data is replaced with B light reflection read data, and the transmission read data is replaced with G light read data. Process.

In the present embodiment, the configuration using the area CCD has been described. However, the present invention can be applied to a case where a line CCD is used instead of the area CCD. In this case, as a line CCD for reflection reading,
A line CCD having a larger photodiode area than a line CCD for transmission reading is used. This allows
The sensitivity is four times higher than that of the line CCD for transmission reading, and the light amount can be reduced to １ ／. Alternatively, the accumulated charges of adjacent odd-numbered pixels and even-numbered pixels may be integrated and read. As a result, the resolution is reduced to １ ／, and the light amount can be reduced to １ ／.
Further, the averaging process may be performed on the reflection read data after the A / D conversion. This allows the S / N ratio to be 3d
b can be improved. In the above case, when the number of pixels of the line CCD for transmission reading is 2,000 pixels, the main scanning for reflection reading is 1000 pixels, and the main scanning for transmission reading is 2,000 pixels.

A line CCD for reflection reading of the R layer and a line CCD for transmission reading of the G layer may be used in common, and illumination for emitting R light and G light may be alternately turned on. Alternatively, a separate line CCD may be provided and a filter transmitting only R light may be provided, and a filter transmitting only G light may be provided to simultaneously light the light sources emitting R light and G light.

[0136]

As described above, according to the present invention,
The generating means generates the image information based on the high frequency component information extracted from the transmission image information and the low frequency component information extracted from the reflection image information, so that a separate image is generated for each of the high frequency component information and the low frequency component information. Processing such as sharpness processing for high frequency components and color correction processing for low frequency component information can be appropriately performed.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image processing system according to an embodiment.

FIG. 2 is a plan view of an APS film.

FIG. 3 is a plan view of a 135 film.

FIG. 4 is a schematic configuration diagram of a reference exposure unit.

FIG. 5 is a plan view of the LED substrate.

FIG. 6 is a view showing a reference exposure area of the APS film.

FIG. 7 is a schematic configuration diagram illustrating another example of a reference exposure unit.

FIG. 8 is a schematic configuration diagram of a monochrome developing unit.

FIG. 9 is a perspective view of an injection tank.

FIG. 10 is a bottom view of the injection tank.

FIG. 11 is a schematic configuration diagram of a film scanner.

12A is a bottom view of the lighting unit, and FIG. 12B is a side view of the lighting unit.

FIG. 13 is a diagram showing the wavelength of irradiation light.

FIG. 14A is a plan view of a bright correction ND filter,
(B) is a plan view of a light correction reflector.

FIG. 15 is a diagram illustrating reading of an image using IR light.

FIG. 16 is a diagram showing a DX code;

FIG. 17 is a timing chart showing an image reading timing.

FIG. 18 is a schematic configuration diagram of a pixel shifting unit.

FIG. 19 is a schematic configuration diagram of an image processing unit.

FIG. 20 is a diagram for describing pixel shifting of an area CCD.

FIG. 21 is a diagram illustrating a relationship between an input signal and an output signal when sharpness enhancement is performed.

FIG. 22 is a side view of the lighting unit.

FIG. 23 is a modification example of the image processing unit.

[Explanation of symbols]

 Reference Signs List 10 image processing system 12 magnetic information reading unit 14 reference exposure unit 16 monochrome developing unit 18 buffer unit 20 film scanner 22 image processing device 24 printer unit 26 processor unit 90 lighting unit 94 imaging lens 96A area CCD 96B area CCD 98A, 98B pixel Shift unit 134 Light / dark correction unit 136 Frame memory 138 Image processing unit 140 Control unit 150 Hard disk 158, 162 LUT 160 MTX circuit 168 Sharpness enhancement unit

Claims (8)

[Claims] 1. A light-transmitting support having at least three kinds of photographic light-sensitive layers containing blue-sensitive, green-sensitive, and red-sensitive photosensitive silver halide emulsions, wherein the image is exposed to light. An image processing apparatus for performing image processing on an image recorded on a color photographic light-sensitive material that has been processed so that a silver image is generated in each photographic light-sensitive layer after the light-sensitive material, A light source for irradiating the color photographic light-sensitive material, and a read sensor that reads reflected image information at low resolution by reflected light from the front side and back side of the color photographic light-sensitive material, and reads transmitted image information at high resolution by light transmitted through the color photographic light-sensitive material. And an image processing apparatus comprising: 2. A method according to claim 1, further comprising the step of providing at least three kinds of photographic light-sensitive layers containing a blue-sensitive, green-sensitive and red-sensitive silver halide emulsion on a light-transmitting support, wherein the image is exposed An image processing apparatus for performing image processing on an image recorded on a color photographic light-sensitive material that has been processed so that a silver image is generated in each photographic light-sensitive layer after the light-sensitive material, A light source for irradiating the color photographic light-sensitive material, and a read sensor that reads reflected image information by light reflected from the front side and the back side of the color photographic light-sensitive material, and reads transmitted image information by light transmitted through the color photographic light-sensitive material; and the read sensor. High frequency component information is extracted from the read transmission image information, and the extracted high frequency component information is combined with the reflection image information read by the reading sensor to generate image information. An image processing apparatus comprising: 3. The method according to claim 1, wherein the generating unit further extracts low frequency component information from the reflected image information read by the reading sensor, and combines the extracted low frequency component information with the high frequency component information to generate image information. The image processing apparatus according to claim 2, wherein the image processing apparatus generates the image. 4. The image processing apparatus according to claim 2, wherein the generation unit synthesizes the high-frequency component information after further performing a sharpness process. 5. The reading sensor includes a plurality of photoelectric conversion elements for photoelectrically converting the reflected light, and further includes a moving unit for moving the reading sensor in a predetermined direction during photoelectric conversion by the photoelectric conversion elements. The image processing apparatus according to claim 1, wherein: 6. The read sensor according to claim 1, wherein the read sensor includes a plurality of photoelectric conversion elements for photoelectrically converting the reflected light, and combines outputs from adjacent photoelectric conversion elements. The image processing apparatus according to claim 1. 7. The front-side low-resolution sensor for reading reflected image information at low resolution by reflected light from the front side of the color photographic light-sensitive material, and the reflection sensor reflected by light reflected from the back side of the color photographic light-sensitive material. 4. A low-resolution sensor for reading back image information at a low resolution, and a high-resolution sensor for reading transmitted image information at a high resolution by light transmitted through the color photographic material. The image processing device according to claim 6. 8. The reading sensor reads the reflected image information at a low resolution by reflected light from one of the front side and the back side of the color photographic light-sensitive material, and transmits the transmitted image information by transmitted light transmitted through the color photographic light-sensitive material. A low-resolution sensor for reading reflected image information at low resolution by reflected light from the other side of the front side and the back side of the color photographic light-sensitive material. The image processing device according to claim 6.