JPH10171043A - Picture recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the contrast of a picture recorded on a photosensitive material constant regardless of the exposure condition of a photographing time by correcting the gradation values of every pixel of picture data according to the density of a film picture changed by the exposure condition when the film picture is recorded on a photographic film. SOLUTION: By a CPU 96, the density of the picture is fetched before the picture data is fetched from a picture memory and it is judged which area out of the superover area(Oo area), the over area(0 area), the normal area(N area) and the under area(U area) the density of the negative film picture belongs to. Besides, a LUT 94 is switched according to a judged result. The conversion characteristic of the LUT 94 is decided so that the dynamic range(difference between the maximum value and the minimum value) of the output data becomes constant regardless of the density of the picture shown by the picture data fetched from the picture memory. Thus, even when the density of the picture belongs to the Oo area or the U area, the contrast of the picture displayed on a liquid crystal panel 31 can be equally kept high to the time of the normal area(N area).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus and, more particularly, to image data obtained by photographing a film image recorded on a photographic film, and forming an image on a recording material based on the obtained image data. The present invention relates to an image recording apparatus for recording the image.

[0002]

2. Description of the Related Art In a photographic printer, a film image recorded on a photographic film (for example, a negative film) is printed on a photosensitive material to produce a photographic print. Light transmitted through the image is projected onto a photosensitive material (recording material) such as photographic paper and printed. In recent years, in addition to the first exposure unit for directly exposing the transmitted light of the film image to the photosensitive material and printing the film image as described above, a photograph including the second exposure unit for exposing the index print image to the photosensitive material Printers have been proposed.

In a second exposure unit of the photographic printer, a film image recorded on each frame of the photographic film is converted into a C image.
The imaging device is configured to sequentially capture images by an imaging device such as a CD and store the obtained image data in an image memory. When exposing an index print image, image data is read out from the image memory for several frames (corresponding to one line), and an image in which the images of the frame are arranged in a line is formed, and the formed image is displayed on a liquid crystal panel. At the same time, the liquid crystal panel is irradiated with light, and the light transmitted through the liquid crystal panel is exposed on a photosensitive material. By repeating this for a plurality of rows, an index print in which a plurality of film images recorded on a photographic film are arranged in a matrix is created. The user can easily search for a film image or the like by referring to the index print.

[0004] The density of a film image photographed and recorded on a photographic film varies greatly depending on the exposure amount (exposure, shutter speed, aperture) at the time of photographing. For this reason, in the above photographic printer, in the first exposure section, the density of the film image (eg, LATD) is measured by photometry of the film image recorded on the photographic film, and the CC filter is determined according to the measured density of the film image. After dimming the light to irradiate the film image by controlling the image exposure, the second exposure unit captures the film image. As a result, it is possible to prevent the level of the image data obtained by imaging from becoming extremely low or saturated, and to keep the gradation value of each pixel of the image represented by the image data within a predetermined range.

[0005]

However, in general, the exposure-color density characteristic of a photographic film is not directly proportional (an example of the exposure-color density characteristic of a negative film is shown in FIG. 4). Does not become constant. For this reason, even for a film image obtained by shooting and recording a certain subject, the contrast of the film image changes according to the exposure amount at the time of shooting, and the contrast is displayed on the liquid crystal panel based on image data obtained by imaging the film image. Even when an image is displayed and the image is recorded on the photosensitive material, there is a problem that the contrast of the image recorded on the photosensitive material cannot be kept constant.

The present invention has been made in view of the above facts, and it is possible to keep the contrast of an image recorded on a photosensitive material constant irrespective of exposure conditions at the time of photographing when recording a film image on a photographic film. It is an object to obtain an image recording device that can.

[0007]

According to one aspect of the present invention, there is provided a recording medium for recording an image on the basis of image data for each pixel obtained from a film image recorded on a photographic film. An image recording device for recording each of pixels of an image represented by the image data in accordance with an exposure condition when the film image is recorded on a photographic film or a density of a film image that changes according to the exposure condition. And a gradation value correcting means for correcting the gradation values of the above.

According to the first aspect of the present invention, the exposure conditions when a film image is recorded on a photographic film, or the density of the film image changes depending on the exposure conditions. The characteristic curve representing the exposure-color density characteristic of the photographic film does not become a straight line as described above, and the contrast of the film image photographed and recorded on the photographic film differs depending on the exposure at the time of photographing. For example, when photographing is performed with overexposure, the color density of the photographic film becomes saturated, thereby lowering the contrast of the film image. Therefore, when an image is recorded on a recording material based on image data obtained by capturing a film image, the gradation value of the image data is changed by each gradation value correcting means in accordance with the density of the photographic film. If the correction is performed every time, the contrast of the image represented by the image data can be kept constant.

4. A method according to claim 3, wherein said tone value correcting means corrects the tone value of said image data by calculating a correction value corresponding to said density and correcting it with the calculated correction value. A method of preparing a plurality of conversion tables for converting the gradation value of each pixel represented by image data into data for recording an image on a recording material, and switching these conversion tables according to exposure conditions or densities Etc. can be adopted.

According to a second aspect of the present invention, in the first aspect of the present invention, the gradation value correcting means may be configured such that the exposure condition or the density is within a first range lower than a standard value or a second range higher than the standard value. When it is determined that the image data is within the range, the gradation value of each pixel is corrected so that the dynamic range of the gradation value of each pixel of the image represented by the image data is extended.

In general, in a photographic film, when the exposure condition at the time of photographing is within a predetermined first range lower than a standard value or within a predetermined second range higher than the standard value, the change in the exposure amount at the time of photographing is changed. , The degree of change in the color density becomes smaller. For this reason, in the invention according to claim 2, when the exposure condition or the density at the time of the photographing is within the first range or the second range, the floor of each pixel of the image represented by the image data is set. Correction is performed so that the dynamic range of the key value (the difference between the maximum value and the minimum value) is extended. According to this, even when the exposure condition or the density of the film image at the time of photographing is in the first or second range, the contrast of the image represented by the image data can be improved similarly to the standard time.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a printer processor 10 to which the image recording apparatus of the present invention is applied. The printer processor 10 includes a main print unit 21 and a sub print unit 22 that expose images on the same photographic paper (recording material).
And a printing unit 58 constituted by
And a processor unit 72 for performing processing such as development, fixing, washing, and drying on the photographic paper image-exposed in step (1).

The printing section 58 includes a work table 14 that projects forward (to the left in FIG. 1) of the casing 12. On the upper surface of the work table 14, a negative carrier 18 for setting a negative film 16, a keyboard 15 for an operator to input various commands and data, and the like are arranged. Below the work table 14, a light source section 36 of the main print section is arranged. The light source unit 36
A light source 38 including a halogen lamp or the like is provided, and the light emitted from the light source 38 is subjected to a color correction filter (Color-Correc).
The negative guide 16 is guided to the negative film 16 set on the negative carrier 18 through an option filter (hereinafter, referred to as a “CC filter”) 40 and a diffusion tube 42. The CC filter 40 is composed of three sets of filters of C (cyan), magenta (M), and yellow (Y). I have.

Above the work table 14 (upper side in FIG. 1), a cover 4 for opening and closing the front side of the casing 12 is provided.
4 are arranged. Inside the cover 44, an optical system 46 constituting the main print unit 21 and a sub print unit 22 for performing sub print such as index print are arranged.

The optical system 46 has a half mirror 43 and splits the light transmitted through the negative film 16 in two directions. A lens 48, a black shutter 50, and a reflection mirror 51 are sequentially arranged on the optical path of the light transmitted through the half mirror 43, and the light transmitted through the negative film 16 is transmitted through the lens 48 and the reflection mirror 51 to the photographic paper 54. The upper part is irradiated at a predetermined magnification.

As shown in FIG. 2, a lens 45 and a half mirror 4 are provided on the optical path of the light reflected by the half mirror 43.
7 are arranged in order. On the optical path of the light reflected by the half mirror 47, a scanner 108 including a CCD sensor or the like is arranged. An image signal processing unit 102 is connected to the scanner 108 via an A / D converter (not shown), and an image signal representing a negative image (film image) output from the scanner 108 is converted into digital image data. The image signal is supplied to the image signal processing unit 102. On the optical path of the light transmitted through the half mirror 47, a negative density measuring unit 56 is arranged. The negative density measuring unit 56
It comprises a scanner 56B composed of an OS sensor and the like, and a negative density measuring device 56A. Negative density measuring instrument 5
6A is a LAT of a negative image recorded on each frame of the negative film 16 based on an image signal from the scanner 56B.
D (Integrated transmission density: Large Area Transmittans Demsity
) Is measured for each of the RGB component colors.

The negative controller 56 is connected to the main controller 20 which controls the entire printer processor 10. The main control unit 20 includes a CPU, ROM, RA (not shown).
M, an input / output controller and the like. The main control unit 20 controls the L of the negative image measured by the negative density measurement unit 56.
Based on the ATD and data input by the operator through the keyboard 15 (FIG. 1), the main print unit 2
1 to determine the amount of exposure when exposing the image, and output information representing the determined amount of exposure to the CC filter
The insertion amount of the filter 40 is adjusted.

The image signal processing unit 102 is connected to a monitor 104 such as a CRT. Image signal processing device 102
Performs predetermined signal processing (negative / positive conversion, CRT γ correction, etc.) on the image data captured from the scanner 108 and displays the image on the monitor 104. Here, monitor 1
The image displayed in 04 corresponds to an image in which the result of actually printing the image on the printing paper 54 is estimated. An image memory 106 is connected to the image signal processing unit 102, and the image data after signal processing by the image signal processing unit 102 is stored in the image memory 106.

The sub-printing section 22 has a light emitting diode (hereinafter referred to as "R") which emits red component color light as an exposure light source.
-LED ") 27, a light-emitting diode (hereinafter, referred to as" G-LED ") 26 that emits green component color light, and a light-emitting diode (hereinafter," B-LE ") that emits blue component color light.
D ”). These LEDs 25
Operations of the light source control units 27 to 27 are controlled by the light source control unit 24. L
The B-LED 25 among the EDs 25 to 27 is arranged on the exposure optical axis X set above the main print unit 21.
A dichroic mirror 28 is arranged on the optical path of the light emitted from the B-LED 25, and the optical axes of the red light emitted from the R-LED 27 and the green light emitted from the G-LED 26 are the exposure optical axes. X is matched.

On the light emission side of the dichroic mirror 28, a liquid crystal panel 31 is arranged on a plane perpendicular to the exposure optical axis X. The liquid crystal panel 31 is a dot matrix display in which a large number of liquid crystal cells whose light transmittances are individually controlled are arranged in a matrix. By applying a predetermined driving voltage V to each liquid crystal cell, the light of each liquid crystal cell is controlled. The image is displayed by changing the transmittance.

An exposure lens 35 is arranged on the light exit side of the liquid crystal panel 31 so that an image formed by light transmitted through the liquid crystal panel 31 is formed on the photographic paper 54 by the exposure lens 35. .

A mirror 30 is arranged on the light incident side of the liquid crystal panel 31 outside the image display area of the liquid crystal panel 31, and a light source light quantity sensor 29 is arranged on the light reflecting side of the mirror 30. Similarly, a mirror 34 is arranged on the light emission side of the liquid crystal panel 31, and a transmitted light amount sensor 33 is arranged on the light reflection side of the mirror 34.

The liquid crystal panel 31 includes an LCD driver 32
The sub-control unit 23 is connected via the. Sub-control unit 23
Is connected to the image memory 106. Sub-control unit 2
Reference numeral 3 denotes a plurality of frames (for example, five frames) of image data stored in the image memory 106 at a predetermined timing, and a plurality (five frames) based on the captured image data.
Is created in one line, and the LCD driver 32 is driven based on the created image data to display an image (index image) on the liquid crystal panel 31.

As shown in FIG. 1, a paper magazine 64 for winding and storing the printing paper 54 in a layer is mounted on the upper portion of the casing 12 opposite to the cover 44. In the vicinity of the paper magazine 64 mounting portion, a roller pair 66 is provided.
Is arranged. The roll-shaped photographic paper 54 stored in the paper magazine 64 is moved by the roller pair 66 to the casing 1.
2, is wound around a roller 67 before the cover 44, hangs down, and passes through a predetermined exposure position. When passing through the exposure position, the photographic paper 54
The images are exposed at 1 and 22, respectively. The image-exposed photographic paper 54 is changed in direction by rollers 68A to 68C, and is conveyed to the processor 72.

The processor section 72 includes a color developing processing tank 74 storing a color developing processing liquid, a bleach-fixing processing tank 76 storing a bleach-fixing processing liquid, and a plurality of rinsing tanks 78 storing a washing processing liquid. Is provided. Print section 5
The photographic paper 54 to which the image has been exposed at 8 is supplied to the color developing tank 7.
4. The respective processes of development, fixing, and washing are performed by being sequentially transported through the bleach-fixing processing tank 76 and the plurality of rinsing tanks 78. The photographic paper 54 that has been rinsed in the rinsing tank 78 is conveyed to the drying unit 80 and dried by exposing it to high-temperature air.

The printing paper 54 after the completion of the drying process passes through the paper density measuring section 90 and is conveyed to the cutter section 84.
The cutter unit 84 detects a cut mark given to the printing paper 54 by the cut mark sensor 86, and
The photographic paper 54 is cut into frames by 8 to form a photographic print.

The photographic print cut by the cutter unit 84 is discharged out of the casing 12 and sent to the sorter unit 92, where it is sorted by the sorter unit 92. From the photographic prints sorted by the sorter unit 92, a defective print such as a so-called out-of-focus image is extracted by an inspection operation, and then a normal photographic print is returned to the customer together with the negative film 16.

When the index image is exposed by the sub print unit 22, the sub control unit 23 fetches image data representing several frames of the index image from the image memory 106 one frame at a time. A driving voltage V to be applied to each pixel (liquid crystal cell) of the liquid crystal panel 31 is set based on the image data, and each pixel of the liquid crystal panel 31 is driven by the set driving voltage V to display an image. At this time, the exposure amount-color density characteristic of the negative film is not directly proportional, and the degree of change in the color density with respect to the exposure amount at the time of shooting is not constant. The contrast changes.

FIG. 4 shows an example of the exposure amount-coloring density characteristics of the negative film. When the exposure amount at the time of photographing is a normal region (N region), the degree of change in the color density with respect to the change in the exposure amount shows an appropriate value, while the super over region (Oo region) or the exposure In the case of the under area (U area) with insufficient amount, the slope of the characteristic curve is small, and the degree of change in the color density with respect to the change in the exposure amount is small. When the exposure amount at the time of photographing is in the over region (O region), the degree of change in the color density is maintained at an appropriate level, as in the case of the N region.

In the present embodiment, the sub-printing unit 2 is also used for an image photographed and recorded on a negative film under various exposure conditions.
2 so that a uniform digital print image can be obtained, a look-up table (hereinafter referred to as “LUT”) for setting a drive voltage V applied to each pixel of the liquid crystal panel 31 is provided for each of the U, N, O, and Oo. It is prepared for each area,
The LUT is switched by determining to which of the above areas the image recorded on the negative film 16 belongs.

FIG. 3 is a functional block diagram showing the LUT switching function of the sub control unit 23. In a memory such as a ROM in the sub-control unit 23, four types of LUTs 94, 94,... Are stored corresponding to respective areas of U, N, O, and Oo. The control unit (CPU) 96 fetches the density (LATD) of the image of the negative film 16 from the main control unit 20 before fetching the image data from the image memory 106, and determines to which region the density of the negative image belongs. Is determined, and the LUT 94 is switched according to the determination result. Each LUT 94 converts input image data into data representing the drive voltage V and outputs the data. The output data from the LUT 94 is temporarily stored in the RAM 98, and is output to the LCD driver 3 at a predetermined timing.
2 is output. The conversion characteristics of the LUT 94 are determined such that the dynamic range (the difference between the maximum value and the minimum value) of the output data is constant irrespective of the density of the image represented by the image data (input data) fetched from the image memory 106. I have. For this reason, even when the density of the image recorded on the negative film 16 corresponds to the Oo area or the U area, the data of the drive voltage having a large change rate is obtained, and the contrast of the image displayed on the liquid crystal panel 31 is different from the normal state. Can be kept equally high.

Next, the operation of the present embodiment will be described. When creating a photographic print and an index print by the printer processor 10, the operator sets the negative film 16 on the negative carrier 18 on the work table 14 and instructs the start of printing through the keyboard 15. Upon receiving the print start instruction, the main control unit 20 of the printer processor 10 conveys the negative film 16 to position an image of a predetermined frame at the exposure position, and then turns on the light source 38. Thus, the positioned image is irradiated with light, and the light transmitted through the image is formed on the scanner 56B, and the density (LATD) of the image is measured by the negative density measuring unit 5.
Measured at 6. Next, the main control unit 20 captures the density value d of the image measured by the negative density measurement unit 56, calculates a correction amount for obtaining an appropriate photographic print based on the captured density value d, and calculates the correction amount. The movement of the CC filter 40 is controlled based on the corrected amount. Thus, the positioned image can be exposed on the photographic paper 54 at an appropriate density (amount of transmitted light).

The image signal processing unit 102 includes a CC filter 4
When the movement of 0 is completed, the image data is fetched from the scanner 108, and the fetched image data is subjected to a predetermined signal processing (negative / positive conversion, CRT γ correction, etc.), and the image is displayed on a monitor 104 such as a CRT. . At this time, since the position of the CC filter 40 is adjusted so that the image on the negative film 16 is printed at an appropriate density, the image data from the scanner 108 always falls within a predetermined level range regardless of the density of the negative image. .

When the image is displayed on the CRT 104, the operator verifies the image. If the image passes, the operator inputs information indicating the success of the verification through the keyboard 15, and if correction of the exposure condition is necessary, inputs correction information. I do. When the information indicating the pass of the test is input, the main controller 20 controls the black shutter 50 to expose the transmission image of the negative film 16 to the photographic paper 54. Further, the main control unit 20 includes the keyboard 15
When the correction information is input through, the CC filter 40 is further controlled in accordance with the input correction information, and the transmission image of the negative film 16 is exposed on the photographic paper. Each time the image is exposed by the main printing unit 21, the image signal processing unit 102 stores the image data after the signal processing in the image memory 106.
To memorize.

Thus, in the main printing section 21,
The images recorded on the negative film 16 are sequentially exposed on the photographic paper 54 frame by frame, and image data representing the exposed negative images is stored in the image memory 106.

When the image data of the negative image recorded on all the frames of the negative film 16 is stored in the image memory 106 and the index print can be created, the sub control unit 23 of the sub print unit 22 An image data of a predetermined number of frames is taken in, and an index image (an image in which the images of the number of frames are arranged in a line) is created. Then, the drive voltage V to be applied to each pixel of the liquid crystal panel 31 according to the image data of the created index image
Is set using a predetermined LUT 94, and the liquid crystal panel 31 is driven by the set driving voltage V to display an image. Thereafter, the sub-control unit 23 turns on the LEDs 25 to 27 to irradiate the image displayed on the liquid crystal panel 31 with light, and prints the image formed by the light transmitted through the liquid crystal panel 31 on the photographic paper 54.

The sub-control unit 23 exposes a reduced image by arranging the images recorded on the negative film 16 in a matrix by repeating the above processing. At this time, the sub control unit 23 displays the image on the liquid crystal panel 31 and the LED 2
Lighting of 5 to 27 is performed for each component color of RGB. Thus, an index color image is formed on the printing paper 54.

The main print section 21 and the sub print section 2
The photographic paper 54 on which the image has been printed and exposed in step 2 is sent to the processor section 72. In the processor section 72, the photographic paper 5
4 is immersed in a color developing solution, a bleach-fixing solution, and a rinsing solution in order, and then subjected to a developing process. The dried photographic paper 54 is cut for each frame by the cutter unit 84 to become a photographic print and an index print.

Next, referring to the flowchart of FIG.
The setting process of the drive voltage V performed by the sub control unit 23 will be described.

In step 100, the density value d of the negative image represented by the image data to be fetched from the image memory 106 is fetched from the main controller 20. The correspondence between the image data and the density of the negative image is determined, for example, by adding a frame number corresponding to each of the density value d stored in the main control unit 20 and the image data stored in the image memory 106. You can know by.

In step 102, the density value d of the captured negative image is set to the under area (U area), the normal area (N area), the over area (O area), and the super over area (Oo area) shown in FIG. It is determined in which of the density areas there exists. This determination is made by previously setting values that define the upper and lower limits of each of the U, N, O, and Oo density regions, and comparing these values with the density value d.

In step 104, the LUT 94 (see FIG. 3) corresponding to the determined density area is selected. In the next step 106, image data (for one frame) is fetched from the image memory 106, and the fetched image data is stored in the liquid crystal panel
Is converted into voltage data representing one drive voltage V. This conversion is performed for each pixel corresponding to the area where the image represented by the image data is displayed among all the pixels corresponding to the display area of the liquid crystal panel 31. Thereby, the image memory 10
The setting process of the drive voltage V for the image data taken in from Step 6 is ended.

The voltage data output from the LUT 94 is stored in the RAM 98 (FIG. 3). Sub-control unit 23
By repeating the above processing, voltage data for a predetermined number of frames constituting one index image
When stored in M98, the stored voltage data is
Output to the driver 32. Thereby, the liquid crystal panel 31
The driving voltage V set by using the LUT 94 corresponding to each image is applied to each pixel, and an image (index image) is displayed.

As described above, in the present embodiment, the drive voltage of the liquid crystal panel 31 is changed for each density region (U, N, O, Oo) of the negative image recorded on each frame of the negative film 16. An LUT 94 for setting is prepared, and the LUT is switched and used depending on which of the areas U, N, O, and Oo the density of the negative image is in. Therefore, the density of the image recorded on the negative film 16 is reduced. It is possible to select the LUT 94 having the optimum conversion characteristic and to convert the image data into the driving voltage V using the selected LUT 94. For this reason, the density gradation of the index image displayed on the liquid crystal panel 31 (the gradation of the light transmittance of each pixel of the liquid crystal panel 31) is controlled to be constant irrespective of the negative density, and the image to be printed on the printing paper 54 is controlled. The contrast can be kept constant.

Particularly, in this embodiment, the U region and the Oo
Since the conversion characteristic of the area LUT 94 is set so that the rate of change of the output voltage data with respect to the input image data is large, the density of the negative image recorded on the negative film 16 is U or Oo. , A print image equivalent to that at the time of normal (N) or over (O) can be obtained. For example, the degree of change in the voltage data representing the drive voltage applied to the liquid crystal panel 31 becomes larger as shown by the solid line a in FIG. 6 with respect to the conversion characteristics of the LUTs for the N region and the O region indicated by the broken line b in FIG. By setting as described above, even when the density of the negative image belongs to the U or Oo region, the change rate of the drive voltage applied to each pixel of the liquid crystal panel 31 is increased as in the case of belonging to the N or O region, A high-contrast image can be displayed on the liquid crystal panel 31.

In the above embodiment, a printer processor for creating an index print in which images recorded on each frame of a negative film are arranged in a matrix has been described as an example. However, the present invention is not limited to this. Instead, the present invention can also be applied to a photographic printer or the like that creates a photographic print by modulating the intensity of laser light based on an image signal obtained by simply imaging a negative film.

In the above embodiment, the density of the image recorded on the negative film is under (U), normal (N), over (O) and super over (Oo).
The LUT is switched according to the determination result. However, the present invention is not limited to this. The density region of the negative image is divided more finely than the four regions. , It may be determined to which of the regions belongs.

Further, in the above embodiment, the image density of the negative film was measured, and the density area of the image was determined based on the measured density value. However, the present invention is not limited to this, and the present invention is not limited to this. Information on exposure at the time of shooting when recording an image of a subject or the like (exposure, shutter speed)
May be acquired, and the density area may be determined based on the acquired information. As a method of acquiring the exposure amount at the time of shooting, for example, a method of recording the information indicating the exposure and shutter speed by a camera at the time of shooting on a magnetic track provided on a negative film, and reading the recorded information with a photographic printer, etc. Can be taken.

[0050]

As described above, according to the present invention, the contrast of an image recorded on a recording material can be kept constant irrespective of the exposure conditions at the time of photographing, and an image with good finish quality can be obtained. Has an excellent effect that

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a printer processor to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of a printer unit.

FIG. 3 is a functional block diagram illustrating an LUT switching function of a sub control unit.

FIG. 4 is a graph showing an example of an exposure amount-coloring density characteristic of a negative film.

FIG. 5 is a flowchart illustrating a drive voltage setting processing routine;

FIG. 6 is a graph showing a relationship between a negative image density and a driving voltage V of a liquid crystal panel as an example of an LUT; a broken line in the figure shows characteristics of a normal or over LUT; 3 shows the characteristics of the LUT.

[Explanation of symbols]

 Reference Signs List 10 printer processor (image recording device) 16 negative film (photographic film) 20 main control unit 21 main print unit 22 sub-print unit 23 sub-control unit (determination unit, gradation value correction unit) 31 liquid crystal panel 54 photographic paper (recording material) ) 94 LUT 96 control unit 106 image memory 108 scanner

Claims (3)

[Claims] An image recording apparatus for recording an image on a recording material based on image data for each pixel obtained from a film image recorded on a photographic film, wherein the film image is recorded on a photographic film. A tone value correcting means for correcting a tone value for each pixel of an image represented by the image data according to an exposure condition at the time of exposure or a density of a film image changed by the exposure condition. . 2. The image processing apparatus according to claim 1, wherein the gradation value correction unit determines whether the exposure condition or the density is within a first range lower than a standard value or within a second range higher than a standard value. 2. The image recording apparatus according to claim 1, wherein the gradation value of each pixel is corrected so that the dynamic range of the gradation value of each pixel of the image to be expanded is extended. 3. The image processing apparatus according to claim 1, wherein the gradation value correction unit converts a plurality of conversion tables having different conversion characteristics for converting a gradation value represented by the image data into data for recording on a recording material, using the exposure condition or the density. 2. The image recording apparatus according to claim 1, wherein the switching is performed according to the following.