JPH09149244A - Recording medium for digital image, its recording method and recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder for a digital image having a recording medium in which an image recorded therein is accurately decoded. SOLUTION: A scanner 1 reads an image recorded on an optical film. A histogram generating means 107 generates a higtogram from an image read by the scanner 101. An entry means 18 inputs a correction amount commands correction processing. A correction processing means 19 applies correction processing to an image read by the scanner 101 by using correction information based on the correction amount inputted by the input means 18 and on a higtogram generated by the histogram generating means 107. A recording means 7 records digital image data of the image subjected to correction processing by the correction processing means 19 to a 1st recording area of the recording medium and records the correction information to a 2nd recording area of the recording medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium for a digital image such as an optical disk in which a photographic image recorded on an optical film is recorded by being digitized, and a photograph recorded on the optical film. The present invention relates to a digital image recording method for digitizing an image and recording it on a recording medium, and a digital image recording apparatus for implementing the digital image recording method.

[0002]

2. Description of the Related Art For example, a photographic image recorded on an optical film is read by a scanner, and the photographic image read by the scanner is digitized to be recorded on a recording medium such as a photo compact disk. Recording device (hereinafter, simply referred to as an image recording device).

In this image recording apparatus, a 35 mm negative film and a positive film are usually used, and an optical film is scanned by a high resolution scanner.

Therefore, in the image recording apparatus as described above, first, the image obtained by the prescan of the scanner captures what kind of image the sensitivity characteristic of the image forming pixel array of the scanner captures, and encodes the scene content of the image. The color balance condition is analyzed to determine if it should be converted.
The analysis result is used for manually adjusting the sensitivity parameter of the scanner and correcting the image (hereinafter, referred to as image processing). Then, based on the amount of image processing, the image obtained by the main scan following the pre-scan is subjected to signal conversion, and the image data obtained by signal conversion is recorded as an image data file on the recording medium.

Therefore, the image data whose color balance has been adjusted is recorded on the recording medium, and a reproduced image having an appropriate color tone and intermediate color reproduction characteristics can be obtained from the recording medium.

[0006]

However, in the conventional image recording apparatus, since only the image data obtained by signal conversion is recorded in the recording medium, it is difficult to grasp the state during image processing. It was In particular, it has been difficult to grasp the deterioration state of an image during image processing and whether the image data is optimally image processed.

Further, it is impossible to accurately restore the image at the time of recording from the recording medium on which the image data is recorded by the image recording apparatus. For this reason, for example, it has not been possible to determine whether the film handled by the image recording apparatus has an image printed by overexposure or underexposure.

Further, when the image data recorded on the recording medium is image-processed again and recorded on the recording medium, the reproduced image having image deterioration is image-processed again, so that the image is remarkably deteriorated. Therefore, a good reproduced image could not be obtained from the recording medium on which the image data was recorded in this way.

Therefore, the present invention has been made in view of the above-mentioned conventional circumstances, and has the following objects.

That is, an object of the present invention is to provide a digital image recording medium capable of accurately restoring an image at the time of recording on the recording medium.

Another object of the present invention is to provide a recording medium for digital images, which enables the user to easily grasp the image state during image processing.

It is another object of the present invention to provide a digital image recording medium which can obtain a good image even when the image is processed again.

It is another object of the present invention to provide a digital image recording method for obtaining a recording medium capable of accurately restoring the image recorded on the recording medium.

Another object of the present invention is to provide a digital image recording method for obtaining a recording medium capable of easily grasping an image state during image processing.

Another object of the present invention is to provide a digital image recording method for obtaining a recording medium capable of obtaining a good image even when the image is processed again.

It is another object of the present invention to provide a digital image recording apparatus for obtaining a recording medium capable of accurately restoring an image recorded on the recording medium.

It is another object of the present invention to provide a digital image recording apparatus which obtains a recording medium capable of easily grasping an image state during image processing.

It is another object of the present invention to provide a digital image recording apparatus which obtains a recording medium capable of obtaining a good image even when the image is processed again.

[0019]

In order to solve the above-mentioned problems, in a digital image recording medium according to the present invention, an image recorded on an optical film is read by a scanner and corrected by an external input. A first recording area in which digital image data of an image obtained by performing correction processing on the image read by the scanner using the correction information based on the amount and the histogram obtained from the image is recorded; And a second recording area in which correction information is recorded.

In order to solve the above-mentioned problems, in the method of recording a digital image according to the present invention, first, the image recorded on the optical film is read by a scanner. And
Digital image data of an image obtained by performing a correction process on the image read by the scanner using the correction amount designated by the external input and the correction information based on the histogram obtained from the image is recorded on the recording medium. The correction information is recorded in the first recording area and the correction information is recorded in the second recording area of the recording medium.

Further, in the digital image recording method according to the present invention, when the correction process is instructed again by the external input, the correction process is performed again by using the correction information based on the current correction amount instructed by the external input. To do. And the second
It is characterized in that only the previous correction information recorded in the recording area is rewritten to the current correction information.

In order to solve the above-mentioned problems, a digital image recording apparatus according to the present invention comprises a scanner for reading an image recorded on an optical film, and a histogram generation for generating a histogram from the image read by the scanner. Means, an input means for externally inputting a correction amount and instructing a correction process, a correction amount externally input by the input means, and correction information based on the histogram generated by the histogram generating means. Correction processing means for performing correction processing on the image read by, and digital image data of the image corrected by the correction processing means is recorded in the first recording area of the recording medium, and the correction information is recorded. Recording means for recording in the second recording area of the recording medium.

Further, in the digital image recording apparatus according to the present invention, when correction processing is instructed again by the input means, the correction processing means corrects the correction amount based on the current correction amount instructed by the input means. The correction process is performed again using the information. Further, the recording means is characterized in that only the previous correction information recorded in the second recording area is rewritten to the current correction information.

[0024]

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

The digital image recording method according to the present invention is carried out by an image recording apparatus 100 as shown in FIG. That is, the image recording apparatus 100 is an application of the digital image recording apparatus according to the present invention, and the recording medium on which the image data is recorded by the image recording apparatus 100 is the digital image recording medium according to the present invention. .

First, the image recording apparatus 100 takes a photographic image (hereinafter, simply referred to as an image) from a film (not shown).
An image reading unit 1 to be described later, a buffer / switch 2 to which the output of the image reading unit 1 is supplied, a color palette 3 to which the output of the buffer / switch 2 is supplied, and an output of the color palette 3 are supplied. Three-dimensional LUT (Lookup
table) 4, a buffer / switch 5 to which the output of the three-dimensional LUT 4 is supplied, an external interface 6 connected to the buffer / switch 5, and data to be supplied between the buffer / switch 5 and the external interface 6 will be described later. Recording processing unit 7 and A / D connected to the recording processing unit 7
An (analog / digital) / D / A (digital / analog) converter 8 and an analog processing circuit 9 connected to the A / D / D / A converter 8 are provided. The output of the external interface 6 is SCSI (small computer
For example, a printer (not shown) is supplied as an input / output via an input / output terminal I ₁ . The output of the analog processing circuit 9 is supplied as an audio output to a speaker (not shown) via the output terminal I ₃ .

In addition, the image recording apparatus 100 has a buffer /
A buffer / switch 14 connected to the switch 2, a main memory control circuit 15 connected to the buffer / switch 14, a main memory 16 connected to the main memory control circuit 15, and a video connected to the buffer / switch 5. Memory control circuit 10 and video memory control circuit 10
A video memory 13 connected to the video memory 13 and D / to which data between the video memory control circuit 10 and the video memory 13 is supplied.
An A converter 11 and an analog processing circuit 12 to which the output of the D / A converter 11 is supplied are provided, and data between the buffer / switch 5 and the video memory control circuit 10 is supplied to a buffer / switch 14. It is designed to be.
Then, the output of the analog processing circuit 12 is supplied as a video output through an output terminal I ₂ to a monitor device (not shown) including a key input unit 18 described later.

The image recording apparatus 100 further includes a memory control CPU (central processing unit) 1 for controlling the main memory control circuit 15, the video memory control circuit 10, and the like.
7 and a system control CPU 19 that controls the operation of the entire apparatus based on the key input unit 18 described above.

The image reading unit 1 is supplied with a CCD (Charge coupled device) linear sensor 101 for outputting an image recorded on a film (not shown) as an electric signal, and an output of the CCD linear sensor 101. Analog processing circuit 102 and analog processing circuit 1
A / D converter 103 to which the output of 02 is supplied,
The shading correction circuit 104 supplied with the output of the converter 103, the one-dimensional LUT 105 supplied with the output of the shading correction circuit 104, the line correction circuit 106 supplied with the output of the one-dimensional LUT 105, and the line correction circuit 106. Histogram acquisition circuit 1 to which output is supplied
07, CCD line sensor 101 and A / D converter 10
3, a timing generator 108 for generating timing signals, a read control CPU 110 for mechanically controlling the image reading unit 1, and a CCD processing CPU for controlling signal processing for electric signals obtained by the CCD line sensor 101. And the output of the histogram collection circuit 107 is supplied to the buffer / switch 2.

The recording processing unit 7 described above includes a disk interface 701 to which data is supplied between the buffer / switch 5 and the external interface 6, and a data conversion circuit 7 connected to the disk interface 701.
02, an encoding processing circuit 703 connected to the data conversion circuit 702, a buffer memory 704 connected to the encoding processing circuit 703, a SCSI 705 and an audio compression processing circuit 708 connected to the buffer memory 704, and an SC.
SCSI706 connected to SI705 and SCSI7
The audio compression processing circuit 708 is provided with an A / D / D /
It is connected to the A converter 8.

In the image recording apparatus 100 as described above, the prescan is performed at a low resolution, and the main scan is performed at a high resolution after the prescan.

Therefore, when the image recording apparatus 100 is turned on by the operation of the key input unit 18 before the prescan is performed, the system control CPU 19 initializes the entire image recording apparatus 100. After the initialization is completed, for example, under the control of the memory control CPU 17, a start lamp (not shown) is turned on, and shading data when the film is read without being set is stored in the main memory 16. After that, the start lamp is turned off under the control of the memory control CPU 17.

Next, the user sets a target film, for example, a 35 mm color film (hereinafter simply referred to as a film) of 36 shots, on a film mounting table (not shown) of the image reading section 1. It is assumed that a plurality of images are recorded in frame units on this film.

When the film is set, the reading mechanism control CPU 110 detects the film and recognizes that the film is set. And the reading mechanism control CPU
Under the control of 110, a lamp (not shown) indicating that the film is set is turned on.

Here, the film set on the film mounting table is irradiated with image pickup light by a light source (not shown).

Next, under the control of the reading mechanism control CPU 110, the film is loaded, and the minimum density detection process and the frame-to-frame detection process are performed on the set film. Based on these detection results, the CCD processing CPU 109 controls the CCD line sensor 101 so that the output level is increased to cancel the base density.

Next, the system control CPU 19 controls the operation of the entire image recording apparatus 100 so as to perform the prescan operation. This prescan operation is performed for the purpose of designating the size of the set film and improving the image quality.

That is, the reading mechanism control CPU 110 is
Under the control of the system control CPU 19, the CCD line sensor 101 is controlled to move at high speed so that the image recorded on the film is read at low resolution frame by frame. Also, the CCD timing generator 108 generates a timing signal based on the control of the system control CPU 19 to the CCD line sensor 101 and the A / D converter 103. Further, the CCD processing CPU 109 controls the signal processing and the like in the image reading unit 1 based on the control of the system control CPU 19.

As a result, the image pickup light passing through the film is imaged on the photosensitive surface of the CCD line sensor 101, and CC
The D line sensor 101 is the CCD timing generator 10
On the basis of the timing signal generated by 8, the formed imaging light is photoelectrically converted. Then, the CCD line sensor 101
Supplies the image signal obtained by photoelectrically converting the imaging light to the A / D converter 103 via the analog processing circuit 102.

The A / D converter 103 receives the CC signal based on the timing signal generated by the CCD timing generator 108.
The image signal supplied from the D line sensor 101 via the analog processing circuit 102 is digitized, and the digitized image signal is supplied to the shading correction circuit 104 as image data.

Here, the image data obtained by the A / D converter 103 is data accompanied by shading due to the effects of illumination unevenness, sensitivity unevenness of the CCD line sensor 101, and the like.

Therefore, the shading correction circuit 104
In order to obtain an accurate brightness image without shading, the shading data stored in the main memory 16 as described above is used to perform correction processing on the image data from the A / D converter 103.

The image data corrected by the shading correction circuit 104 is stored in the memory control CP.
Under control of U17, the one-dimensional LUT 105, line correction circuit 106, histogram collection circuit 107, buffer /
It is temporarily stored in the main memory 16 via the switches 2 and 14 and the main memory control circuit 15. At this time, the system control CPU 19 controls the main memory control circuit 15 to control the write address of the image data in the main memory 16. At this time, the one-dimensional LUT1
05 and the histogram collection circuit 107 do nothing.

Next, the CCD processing CPU 109 controls the histogram collection circuit 107 so as to generate a histogram for the image data stored in the main memory 16. As a result, the histogram collection circuit 107 generates a histogram for the image data stored in the main memory 16.

Next, the CCD processing CPU 109 uses the histogram generated by the histogram collection circuit 107 to extract the maximum value, the minimum value and the average value of the image density and the color balance, and the R, G, B values. The determination process of the γ characteristic for each is performed. Then, the CCD processing CPU 109 performs the above-described extraction processing and determination processing on the image data of each frame, and writes the data obtained by these processing in the one-dimensional LUT 105.

Next, the system control CPU 19 sends the data written in the one-dimensional LUT 105 to the color palette 3.
And write in the three-dimensional LUT 4.

Next, the system control CPU 19 receives the image data stored in the main memory 16, that is, the image data of each frame obtained by the prescan operation, from the main memory control circuit 15, the buffers / switches 14, 2, and the like.
Memory control CPU 17 to supply to buffer / switch 5 via color palette 3 and 3D LUT 4.
Control. Further, the system control CPU 19 controls the main memory control circuit 15 so as to control the read address of the image data in the main memory 16. Therefore, the image data stored in the main memory 16 is signal-converted by the color palette 3 and the three-dimensional LUT 4 and supplied to the buffer / switch 5.

The image data supplied to the buffer / switch 8 is sent by the system control CPU 19 to the memory control CPU 1
It is temporarily stored in the video memory 13 via the video memory control circuit 10 by controlling 7. Also at this time, the system control CPU 19 controls the video memory control circuit 10 to control the write address of the image data in the video memory 13.

Next, the system control CPU 19 converts the image data stored in the video memory 13 into the D / A converter 11.
The CPU 17 controls the memory control CPU 17 so that the video memory 13 is supplied to the video memory 13 and the video memory control circuit 10 to control the read address of the image data in the video memory 13. As a result, the image data stored in the video memory 13 is supplied to the D / A converter 11.

The D / A converter 11 analogizes the image data from the video memory 13 and outputs the analogized image data as a video signal from the output terminal I ₂ via the analog processing circuit 12.

The video signal output from the output terminal I ₂ is supplied to a monitor device (not shown), and an image based on the video signal is displayed on the screen by the monitor device. Therefore, the monitor device displays images of all frames on one screen.

Next, the user observes the image of each frame displayed on the screen by the monitor device, and adjusts the brightness and color balance of each frame as necessary (hereinafter referred to as image quality adjustment). ) Is performed using the key input unit 18.

The system control CPU 19 uses the key input unit 1
Based on the image quality adjustment amount operated by 8, the contents of the color palette 6 and the three-dimensional LUT 7 are rewritten for each frame, and the sensitivity of the CCD image scanner 101 is corrected. The system control CPU 19 then adjusts the image quality adjustment amount for the color palette 6 and the three-dimensional LUT 7, and C
The memory control C is used to temporarily store the correction amount for the sensitivity of the CD image scanner 101 as correction data, that is, the correction data composed of R, G, B gains, offsets, and characteristic curve curves.
Control PU17. Therefore, the correction data at this time is stored in the main memory 16 by the memory control CPU 17.

Next, the system control CPU 19 sends a signal again by the color pallet 3 and the three-dimensional LUT 4 in which the image data stored in the main memory 16 has been rewritten, in the same manner as the above-mentioned processing for displaying the screen of the monitor device. The operation is controlled such that the converted data is output from the output terminal I ₂ . Therefore, the image after the image quality adjustment is displayed on the monitor device.

As a result of repeating the image quality adjustment by operating the key input unit 18 as described above, when the desired image quality is obtained,
Next, the user operates the key input unit 18 to instruct the apparatus to perform the main scan operation for each frame.

As a result, the system control CPU 19
Based on the correction data stored in the main memory 16, the operation control of the entire image recording apparatus 100 is performed so as to perform the main scan operation.

That is, the reading mechanism control CPU 110
Under the control of the system control CPU 19, the CCD line sensor 101 is controlled to move at a low speed so that the image recorded on the film is read in high resolution frame by frame. Also, the CCD timing generator 108 generates a timing signal based on the control of the system control CPU 19 to the CCD line sensor 101 and the A / D converter 103. Further, the CCD processing CPU 109 controls the entire image reading unit 1 regarding signal processing and the like under the control of the system control CPU 19.

Here, the memory control CPU 17 uses the color palette information relating to the contents of the color palette 3 rewritten during the prescan operation as described above to the CCD.
It is supplied to the processing CPU 109. And CCD processing CP
The U 109 rewrites the one-dimensional LUT 105 based on the color palette information supplied from the memory control CPU 17.

Therefore, the image signal obtained by the CCD line sensor 101 is processed by the analog processing circuit 102 and the A / D converter 10 in the same manner as the above-described prescan operation.
3. The shading correction circuit 104 is supplied to the one-dimensional LUT 105 rewritten as described above.
The signal is converted by the dimension LUT 105. One-dimensional LUT
The image signal subjected to signal conversion in 105 passes through the line correction circuit 106, the histogram collection circuit 107 as it is, and is supplied to the buffer / switch 2 as image data.

Next, the system control CPU 19 supplies the image data supplied to the buffer / switch 2 to the buffer / switch 5 and the video memory control circuit 10 via the buffer / switch 14, and as described above. The correction data used during the main scan operation is read from the main memory 16 and the memory control circuit 15 and the buffer /
The memory control CPU 17 is supplied to the buffer / memory 5 and the video memory control circuit 10 via the memory 14.
Control.

As a result, the video data control circuit 10 and the buffer / switch 5 are respectively supplied with the image data obtained by the main scan operation and the correction data stored in the main memory 16.

Subsequently, the system control CPU 19 sends the image data supplied to the buffer / switch 5 and the correction data stored in the main memory 16 from the input / output terminal I ₁ via the external interface 6 to, for example, The memory control CPU 17 is controlled so that the image data and the correction data are supplied to the recording processing unit 7 while being output to a printer not shown.

As a result, the image data and the correction data are supplied to the printer through the input / output terminal I ₁ .
The printer prints out an image and correction data based on the supplied image data.

The recording processing unit 7 also records the supplied image data and correction data on a recording medium.

That is, the recording process on the recording medium is as follows.
This is performed by controlling the recording operation of the entire recording processing unit 7 of the disk processing CPU 709.
Under the control of 709, the image data and the correction data from the buffer / switch 5 are transferred to the disk interface 7
01 and the data conversion circuit 702, the encoding processing circuit 7
03.

The encoding processing circuit 703 uses the disk processing C.
Based on the control of the PU 709, a predetermined still image encoding method,
For example, while the image data from the data conversion circuit 702 is encoded by the JPEG method, the data conversion circuit 70
2. Encode the correction data from 2. Then, the encoding processing circuit 703 stores the encoded image data and correction data in the buffer memory 704.

On the other hand, for example, the audio data corresponding to the image data encoded by the encoding processing circuit 703 is supplied to the audio compression processing circuit 708 under the control of the disk processing CPU 709, and by the audio compression processing circuit 708.
It is compressed by the ATRAC (Adaptive TRansform Acoustic Coding) method and stored in the buffer memory 704.

The audio data supplied to the audio compression processing circuit 708 is output from the audio output terminal I ₃ via the A / D / D / A converter 8 and the analog processing circuit 9 under the control of the disk processing CPU 709. Is output as.

Then, the image data, the correction data, and the audio data stored in the buffer memory 704 are controlled by the disk processing CPU 709 under the control of SCSI 705, 7.
It is supplied to the disk drive 707 via 06.

The disk drive 707 is driven and controlled by the disk processing CPU 709 to record each data from the SCSI 706 in a predetermined format on the optical disk which is a recording medium.

Therefore, on the optical disc, high-resolution image data and correction data are formatted for each frame and recorded as each image data file.

On the other hand, the image data and the correction data supplied to the video memory control circuit 10 are stored in the system control CPU.
19 controls the memory control CPU 17 to temporarily store it in the video memory 13. Then, the system control CPU 19 performs the operation control such that the image data and the correction data are output from the output terminal I ₂ as a video output signal in the same manner as the screen display process of the monitor device described above. Therefore, an image based on the image data obtained by the main scanning operation and the correction data corresponding to the image data are displayed on the screen of the monitor device.

As described above, the recording process on the optical disk is performed frame by frame, and when the recording process for all the frames is completed, that is, the reading mechanism control CPU 110 performs the main scan operation of the film set on the film mounting table. When the completion is recognized, the reading mechanism control CPU 110
Controls the film discharge operation on the film mounting table so as to discharge the set film. As a result, the set film is discharged. And
Under the control of the reading mechanism control CPU 110, a lamp (not shown) indicating that the film is set is turned off.

As described above, in the image recording device 100,
While recording the image data of each frame on the optical disc,
The correction data corresponding to the image data at the time of image quality adjustment (hereinafter, also referred to as image processing) by operating the key input unit 18 is also recorded.

Further, for example, when the image data recorded on the optical disc as described above is reproduced, the image quality is processed again, and the image data is recorded on the optical disc, the image recording apparatus 100 is used.
The original image data recorded on the optical disc is recorded on the optical disc as it is, and only the correction data is rewritten to the correction data when the image quality is processed again.

Next, the image data file or the like for each frame which is formatted and recorded on the optical disc will be specifically described.

First, the image recording apparatus 100 uses, for example, a file structure as shown in FIG. 2 as a basic file structure. That is, the file F is composed of a header portion H, an empty area D _M, and a data portion D _ada .

The start address of the data part D _ada is defined by the header part H, and the header part H is as shown in FIG.
The format table T _F arranged at the head and a plurality of tables T ₁ , T ₂ , ..., T _N.
Incidentally, FIG. 3 shows the file structure in which the empty area D _M is omitted.

The tables as described above each have the structure shown in FIG. 4, that is, an arbitrary table T _X.
Is a 1-byte table ID _X , a 1-byte next table pointer P _X, and an m-byte table data T.
_Data and an empty area T _{dm of} n bytes are sequentially arranged from the first 1st byte.

As the above table, for example, a table as shown in Table 1 is provided, and a table ID is defined in each table.

[0081]

[Table 1]

Further, as shown in FIG. 5, the information of each table includes a field name d ₁ , a data amount d _2, and a data format d ₃ .

Among the tables shown in Table 1 above, each information of the image parameter table, recording information table, color management parameter table, division management table, camera information table, and scanner information table will be specifically described. .

First, the information of the image parameter table is
For example, it consists of information as shown in Table 2.

[0085]

[Table 2]

In Table 2 above, "image size" is size information based on the number of pixels of the image. The "image constituent element" is information such as 4: 2: 0 or 4: 2: 2. “Vertical / horizontal identification” is rotation information for displaying an image.
The "compression rate" is information on the number of bits per pixel of the image. The "input device type" is information about a television-related device, a camera device, a scanner device, etc., and is a television system for a television-related device, a filter type for a camera device, and a scanner device. Is information such as the type of document. And each "valid data"
Is information when the range of valid data is expressed in abbreviated form.

The information in the recording information table is, for example, the information shown in Table 3.

[0088]

[Table 3]

The information of the color management parameter table is, for example, the information shown in Table 4.

[0090]

[Table 4]

In Table 4 above, "TBD" is R,
This is information such as G and B gains.

The information of the division management table is, for example, the information shown in Table 5.

[0093]

[Table 5]

In Table 5 above, "division screen configuration X"
Is information on the horizontal size of the short non-divided original screen, and "divided screen configuration Y" is information on the vertical size of the short non-divided original screen. Further, "position X in division" is position information in the horizontal direction of an image of an image data file including this division management table in the horizontal and vertical sizes described above, and "position Y in division" is the vertical direction. It is the position information of.

The information in the camera information table is, for example, the information shown in Table 6.

[0096]

[Table 6]

In Table 6, the "photometric method" is information such as average, center weight, spot, and multi-spot. The “light source” is information on daylight, fluorescent light, tungsten light, standard light, etc., and the “flash” is information on whether or not the flash is used.

The information in the scanner information table is
For example, the information is as shown in Table 7.

[0099]

[Table 7]

Therefore, with the above-mentioned file structure, the image data file for each frame recorded on the optical disc is, for example, as shown in FIG. 6, a plurality of tables T ₁ including a format table T _F. ~ T ₁₁
And a data section D _ata composed of image data encoded by the JPEG method.

As described above, in the image recording device 100,
Correction data corresponding to the image of each frame, that is, Table 7 above.
Since the information such as the scanner information table shown in FIG. 2 is recorded in the recording medium together with the image data of the image of each frame, the image at the time of recording can be accurately restored from this recording medium.

Further, since the adjustment amount such as color balance can be easily recognized from the correction data recorded on the recording medium, it is possible to easily grasp the deterioration state of the image during image processing.

Further, since the image recording apparatus 100 is adapted to output the correction data to the monitor device, the correction data displayed on the monitor device, that is, the value at the time of image processing is calculated from the value of the γ characteristic data or the like. Can be easily recognized. As a result, it is possible to determine overexposure, underexposure, an optimum exposure amount, etc. for the set film.

Furthermore, when the image is processed again and recorded on the recording medium, only the correction data is rewritten while the image data remains unchanged. It is possible to obtain a good reproduced image without deterioration.

[0105]

In the digital image recording medium according to the present invention, the image recorded on the optical film is read by the scanner, and based on the correction amount designated by the external input and the histogram obtained from the image. It has a first recording area in which digital image data of an image obtained by performing a correction process on an image read by the scanner using the correction information is recorded, and a second recording area in which the correction information is recorded. . As a result, the image at the time of recording the digital image data can be accurately restored from this recording medium. In addition, the correction data recorded in the second recording area makes it possible to easily grasp the deterioration state of the image during image processing. Further, when the correction processing is instructed again by the external input and the correction processing is performed again by using the correction information based on the current correction amount instructed by the external input, the correction processing is recorded in the second recording area. Only the previous correction information can be rewritten to the current correction information. As a result, a good image can be obtained even when the image is processed again and recorded on the recording medium.

In the digital image recording method according to the present invention, the image recorded on the optical film is read by the scanner. Then, the digital image data of the image obtained by performing the correction process on the image read by the scanner using the correction amount designated by the external input and the correction information based on the histogram obtained from the image is recorded. Recording in the first recording area of the medium. Further, the correction information is recorded in the second recording area of the recording medium.
Thus, from the recording medium obtained by this recording method,
The image at the time of recording on the recording medium can be accurately restored. Further, since the correction data is recorded in the second recording area, it is possible to easily grasp the deterioration state of the image during image processing from the recording medium obtained by this recording method.

Further, in the digital image recording method according to the present invention, when the correction processing is instructed again by the external input, the correction processing is performed again by using the correction information based on the current correction amount instructed by the external input. Then, only the previous correction information recorded in the second recording area is rewritten to the current correction information. As a result, a good image can be obtained from the recording medium obtained by this recording method even when the image is processed and recorded again.

In the digital image recording apparatus according to the present invention, the scanner reads the image recorded on the optical film. The histogram generation means generates a histogram from the image read by the scanner. The input unit externally inputs the correction amount and instructs the correction process. The correction processing means performs correction processing on the image read by the scanner using the correction amount externally input by the input means and the correction information based on the histogram generated by the histogram generation means. The recording means records the digital image data of the image subjected to the correction processing by the correction processing means in the first recording area of the recording medium and the correction information in the second recording area of the recording medium. . As a result, an image at the time of recording on the recording medium can be accurately restored from the recording medium obtained by this recording device. Further, since the correction data is recorded in the second recording area, it is possible to easily grasp the deterioration state of the image during image processing from the recording medium obtained by this recording device.

Further, in the digital image recording apparatus according to the present invention, when correction processing is instructed again by the input means, the correction processing means corrects the correction amount based on the current correction amount instructed by the input means. The correction process is performed again using the information. Further, the recording unit rewrites only the previous correction information recorded in the second recording area with the current correction information. As a result, a good image can be obtained from the recording medium obtained by this recording apparatus even when the image is processed and recorded again.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an image recording apparatus to which a digital image recording apparatus according to the present invention is applied.

FIG. 2 is a diagram for explaining a basic file structure of data recorded on a recording medium by the image recording apparatus.

FIG. 3 is a diagram for explaining a structure of a header portion in the file structure.

FIG. 4 is a diagram for explaining a configuration of a table of the header section.

FIG. 5 is a diagram for explaining the contents of the table.

FIG. 6 is a diagram for explaining a configuration of an image data file recorded on a recording medium by the image recording device.

[Explanation of symbols]

 1 image reading unit 2, 5, 14 buffer / switch 3 color palette 4 three-dimensional LUT 6 external interface 7 recording processing unit 8 A / D / D / A converter 9, 12 analog processing circuit 10 video memory control circuit 11 D / A converter 13 video memory 15 main memory control circuit 16 main memory 17 memory control CPU 18 key input unit 19 system control CPU 100 image recording device

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Claims (5)

[Claims] 1. An image recorded on an optical film is read by a scanner and read by the scanner using a correction amount designated by an external input and correction information based on a histogram obtained from the image. A digital image recording medium having a first recording area in which digital image data of an image in which a correction process has been performed on the image is recorded and a second recording area in which the correction information is recorded. 2. An image read by the scanner by reading the image recorded on the optical film with a scanner and using a correction amount designated by an external input and correction information based on a histogram obtained from the image. The digital image data of the image subjected to the correction processing is recorded in the first recording area of the recording medium, and the correction information is recorded in the second recording area of the recording medium. Recording method. 3. When the correction processing is instructed again by the external input, the correction processing is performed again by using the correction information based on the correction amount of this time instructed by the external input, and is recorded in the second recording area. 3. The method for recording a digital image according to claim 2, wherein only the correction information of the previous time which has been set is rewritten to the correction information of this time. 4. A scanner for reading an image recorded on an optical film, a histogram generating unit for generating a histogram from the image read by the scanner, and an input unit for externally inputting a correction amount and instructing a correction process. Correction processing means for performing correction processing on the image read by the scanner using the correction amount externally input by the input means, and the correction information based on the histogram generated by the histogram generation means; The digital image data of the image subjected to the correction processing by the correction processing means is recorded in the first recording area of the recording medium, and the correction information is recorded in the second recording area of the recording medium. A digital image recording device characterized by the above. 5. When the correction processing is instructed again by the input means, the correction processing means performs the correction processing again by using the correction information based on the current correction amount instructed by the input means, and 5. The digital image recording apparatus according to claim 4, wherein the recording means rewrites only the previous correction information recorded in the second recording area with the current correction information.