JPH1169149A - Image reading processor and image processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform image processing by subjecting the head image to image processing by an image processing means and transferring the image subjected to the image processing, thereby performing image processing such as color adjustment inside a processor. SOLUTION: This image reading processor 10 is provided with an image processing means 13 to perform the image processing of a read image and transfer the processed image. That is, in the processor 10, an image reading means 11 reads an image, an image storing means 12 stores the read image and image processing means 13 performs image processing of the stored image such as color adjustment. In such cases, if an external terminal 20 sends compensation quantity P, the stored image is undergone image processing based on the value P. An image transfer means 14 transfers the image after it is undergone image processing to the terminal 20, etc. With this, because image processing such as color adjustment can be done inside the processor 10, it is possible to efficiently perform image processing without depending on the throughput of the terminal 20 to be connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an image reading processing apparatus and an image processing method, and more particularly to an image reading processing apparatus for reading and transferring an image, and an image processing method for performing image processing between the image reading processing apparatus and an external terminal. About.

[0002]

2. Description of the Related Art An image reading processing device,
2. Description of the Related Art A scanner is used for irradiating a figure or a photograph with light, reading the reflected light with a CCD (Charge Coupled Device) or the like, and inputting image information to a PC (Personal Computer).

[0003] In recent years, film scanners which take in images of 35 mm negative / positive film as digital data into a PC have been used in a wide range of fields such as printing, publishing and design.

FIG. 8 is a diagram showing a processing sequence of a conventional system including a film scanner and a PC. The film scanner 100 and the PC 200 are connected by SCSI having a high data transfer speed. It should be noted that the dotted arrows in the figure represent serial communication, and the thick arrows represent data. [S50] The film scanner 100 pre-scans the image film to generate a pre-scan image. [S51] The film scanner 100 transfers the pre-scan image to the PC 200. [S52] The PC 200 performs color adjustment. [S53] The PC 200 displays the color-adjusted prescan image. [S54] The user 30 confirms the pre-scanned image and performs color correction. If the color correction is completed, the process proceeds to step S55. If the color correction is necessary, the correction amount is set and the process returns to step S52. [S55] The user 30 sends a color correction end notification to the PC 200.
Set to. [S56] After receiving the color correction end notification from the PC 200, the film scanner 100 performs a main scan of the image film. [S57] The film scanner 100 transfers the main scan image to the PC 200. [S58] The PC 200 performs final color adjustment on the main scan image with the correction amount at the end of the color correction. [S59] The PC 200 displays the main scan image color-adjusted in step S58.

As described above, the film scanner 100 transfers the pre-scanned image to the PC 200. And PC2
The amount of correction is set using the driver software or the like above 00, and image processing such as color adjustment is performed.

[0006]

However, in the conventional system described above, the image read by the film scanner 100 is generally processed on the PC 200,
The speed of the image processing depends on the processing capability of the PC 200.

For this reason, the processing speed of the film scanner 100 also depends on the processing capability of the PC 200, and there is a problem that the processing speed greatly differs depending on the use environment of the user 30 even if the same film scanner 100 is used.

Further, when an application other than the driver software is activated on the PC 200, the processing speed is further reduced. The present invention has been made in view of such a point, and it is an object of the present invention to provide an image reading processing apparatus that performs image processing such as color adjustment inside the apparatus and performs image processing efficiently.

It is another object of the present invention to provide an image processing method in which image processing such as color adjustment is performed inside the apparatus and image processing is efficiently performed.

[0010]

According to the present invention, in order to solve the above-mentioned problems, in an image reading processing apparatus for reading and transferring an image, an image reading means for reading an image, and an image storing means for storing the read image And when the correction amount is sent from the outside, an image processing unit that performs image processing based on the correction amount on the stored image, and an image transfer unit that transfers the image after the image processing. An image reading processing device is provided.

Here, the image reading means reads an image. The image storage means stores the read image. When the correction amount is sent from outside, the image processing means performs image processing on the stored image based on the correction amount. The image transfer means transfers the image after the image processing.

In an image processing method for performing image processing between an image reading processing device and an external terminal, the image reading processing device reads an image, performs image processing to generate a preliminary image, and reads the image. A processing device that transfers the preliminary image to the terminal, the terminal sets a correction parameter for the image processing, and the image reading processing device performs the image processing on the preliminary image based on the correction parameter. Between the image reading processing device and the terminal, transfer of the preliminary image, the image processing based on the setting of the correction parameter and the image processing based on the correction parameter, repeat the image processing correction, the optimal correction parameter in the terminal Setting, the terminal sets an image processing correction end notification, and the image reading processing device reads the image again. Wherein the image reading processing device performs the image processing with the optimum correction parameter to generate an optimally processed image, and the image reading processing device transfers the optimally processed image to the terminal. A method is provided.

Here, between the image reading processing apparatus and the terminal, the image processing correction including the transfer of the preliminary image, the setting of the correction parameter, and the image processing based on the correction parameter is repeated, and the optimum correction parameter is set at the terminal. . Then, the image reading processing device performs image processing on the image read again using the optimum correction parameter to generate an optimally processed image, and transfers the image to the terminal.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a principle diagram of an image reading processing apparatus according to the present invention. The image reading processing device 10 is connected to the terminal 20.

The image reading means 11 reads an image.
The image storage means 12 stores the read image. The image processing means 13 performs image processing such as color adjustment on the stored image. In this case, when the correction amount P is sent from the external terminal 20, image processing based on the correction amount P is performed on the stored image. The image transfer means 14 transfers the image after the image processing to the terminal 20 or the like.

Next, the operation will be described. FIG. 2 is a flowchart showing an operation procedure of the image reading processing device 10 of the present invention. [S1] The image reading means 11 reads an image. [S2] The image storage means 12 stores the read image. [S3] The image processing means 13 performs image processing such as color adjustment on the stored image. [S4] The image transfer means 14 sends the processed image to the terminal 2.
Transfer to 0 etc.

As described above, the image reading processing apparatus 10 of the present invention has a configuration in which the image processing means 13 is provided to perform image processing on the read image and transfer the image after the image processing. As a result, image processing such as color adjustment can be performed inside the image reading processing apparatus 10, so that the connected terminal 2
It is possible to efficiently perform image processing without depending on the processing capability of 0.

Next, an internal configuration when the image reading processing apparatus 10 of the present invention is applied to a film scanner will be described. FIG. 3 is a diagram showing the internal configuration of the film scanner 10a. In the figure, dotted arrows indicate serial communication, broken arrows indicate control lines, and thick arrows indicate data.

The system control microcomputer section 16
It is a master CPU that controls the operation inside the film scanner 10a. When an instruction (SCSI command) is received from the PC 21, the content of the instruction is sent to the system control microcomputer 16 after its validity is determined by a SCSI control microcomputer 14a to be described later.

The system control microcomputer section 16 interprets a command and executes an operation corresponding to the command while issuing a command to another microcomputer section. The status etc. to be sent to the PC 21 is also assembled, and the status is SC
It is sent to the SI control microcomputer section 14a.

SCSI control microcomputer section 14a
Is a CPU that controls the SCSI control unit 14b, and performs direct communication with the PC 21. Also, PC
It determines the validity of the command from the controller 21 and transfers the command to the system control microcomputer 16. In addition, a request and an operation result from the system control microcomputer unit 16 are transferred to the PC 21.

The SCSI control unit 14b is an SPC
(SCSI Protocol Controller) It comprises an IC, a buffer for connecting image data to an image data bus inside the film scanner 10a, and peripheral circuits.

In the SCSI data phase, the image data is sent to the internal image data bus, and the other data (parameters) are transferred to the SCSI control microcomputer unit 1.
4a to the internal communication bus.

The memory control microcomputer section 12a
The CPU controls the memory 12b and the color adjustment unit 13a. The memory 12b is a memory for storing optically read image data and compressed data.
It has a capacity of × 3072 × 3 colors.

The color adjusting section 13a is composed of a one-dimensional LUT (look-up table), a three-dimensional LUT, and a bus switch. LUT for optically read image data
Color conversion according to

The compression control microcomputer 15a, which is an image compression means, is a CPU for controlling a compression block. Processing such as setting the compression ratio and fixing the length of the compressed file is performed. The compression unit 15b, which is an image compression unit, includes JPEG compression, RGB-YUV color gamut conversion, a compressed file temporary storage buffer, and peripheral circuits. Image data (RGB) sent from the memory is converted to luminance and color difference (YUV)
After sub-sampling the color difference signal,
PEG compressed.

Scanner control microcomputer section 11a
Is a CPU that controls the scanner control unit 11b and the overall optical processing. The scanner control section 11b includes a CCD, an A / D converter, a scanner correction circuit, and the like.

The system control microcomputer section 16 and the SCSI control microcomputer section 1 described above
4a, the scanner control microcomputer unit 11a, the memory control microcomputer unit 12a, and the compression control microcomputer unit 15a are configured in a multiprocessor format.

Next, the overall operation of the film scanner 10a will be described. FIG. 4 is a flowchart showing the overall operation of the film scanner 10a. [S10] Prescan the film image data. [S11] Color adjustment is performed on the prescanned image. [S12] The prescan image after color adjustment is transferred to the PC 21. [S13] The user converts the pre-scanned image after color adjustment to a PC
Check on 21. If further color adjustment is required, the correction parameters are transmitted to the film scanner 10a. Here, the correction parameter is a change value of the correction amount relatively added. If the color correction is completed, the process proceeds to step S14. If the color correction is required, the process proceeds to step S11.
Return to [S14] The main scan of the film image data is performed, and the final color adjustment is performed. [S15] The final scanned image after the final color adjustment is
Transfer to C21.

Next, the flow of data in the system including the film scanner 10a and the PC 21 will be described. FIG. 5 is a diagram showing a data flow of the system. At the time of pre-scan, the light from the lamp 11b-1 is applied to the film 1, and the reflected light is read by the line CCD 11b-2. The read film data is stored in the A / D converter 1
1b-3, passes through the scanner correction unit 11b-4, and is stored in the memory 12b-1 as negative information.

This transfer path is connected to the line CCD 11b-2 →
A / D converter 11b-3 → scanner correction unit 11b-4 →
The memory control unit 12a-1 becomes the memory 12b-1. In addition, a frame is cut out for each frame on the memory 12b-1, and a color correction value is calculated.

At the time of pre-scan image transfer, the color correction data for each frame is transferred to the pre-scan image data (128 × 192) by a command from the PC 21 in the one-dimensional LUT 13a-
The data is transferred while being set in the one- and three-dimensional LUT 13a-2.

The transfer path is as follows: memory 12b-1 → memory control unit 12a-1 → one-dimensional LUT 13a-1 →
3D LUT 13a-2 → Bus switch unit 13a-3 →
The SCSI control unit 14b is changed to the PC 21 and is converted into positive information and transferred to the PC 21.

Each time processing such as frame position adjustment and color correction is performed on the PC 21, the PC 21
Is retransmitted. At the time of color correction by the user, the user checks the prescanned image color-adjusted by the film scanner 10a on the monitor of the PC 21. If further correction is desired, a correction amount P is set. Only the correction parameter of the relatively added correction amount P is transferred from the PC 21 to the film scanner 10a.

This transfer path is from the PC 21, the SCSI controller 14b, the bus switch 13a-3, and the memory controller 12a-1. Then, color correction is performed in the film scanner 10a using the transferred correction parameters, and the prescan image is transferred to the PC 21 again.

At the time of the main scan, the line CCD 11b-2
The film data read by the A / D converter 11b-3,
The LUT correction for each frame determined at the time of the pre-scan is performed through the scanner correction unit 11b-4 and the memory 12b
-1 is stored.

This transfer path is connected to the line CCD 11b-2 →
A / D converter 11b-3 → scanner correction unit 11b-4 →
One-dimensional LUT 13a-1 → three-dimensional LUT 13a-2 → memory control unit 12a-1 → memory 12b-1. At this point, the data is converted from negative to positive and recorded in the memory 12b-1.

At the time of main scan image data transfer, if the image captured by the scan operation is transferred to the PC 21 as it is, non-compression transfer is performed. In the case of an uncompressed image, since an image that has been subjected to color correction for each frame already determined by pre-scanning is recorded in the memory 12b-1, the one-dimensional L
The UT 13a-1 and the three-dimensional LUT 13a-2 are transferred after being converted into a linear table.

The transfer path is as follows: memory 12b-1 → memory control unit 12a-1 → one-dimensional LUT 13a-1 →
3D LUT 13a-2 → Bus switch 13a-3 → S
The CSI control unit 14b changes to PC21.

In the case of a compressed image at the time of main scan image data transfer, the image captured by the scan operation is first compressed. The film scanner 10a employs a JPEG compression / expansion LSI equipped with a fixed length algorithm. The compression process is divided into the following two stages.

One is to set a target file size (compression ratio), and then infer a JPEG parameter to be set from the information amount of the entire image (1PASS). The second is 2PASS which creates an actual compressed file according to the parameters set as a result of 1PASS. Therefore, the entire image is compressed by transferring it twice.

Then, the file is transferred from the memory 15b-1 storing the compressed file to the memory 12b-1 for transfer to the PC 21. This transfer path is stored in the memory 15
b-1 → JPEG compression section 15a-1 → bus switch 13
a-3 → memory controller 12a-1 → memory 12
b-1.

Then, the compressed file is converted into a one-dimensional LU.
The T13a-1 and the three-dimensional LUT 13a-2 are transferred after being converted into a linear table. This transfer path is connected to the memory 12b-
1 → memory control unit 12a-1 → one-dimensional LUT1
3a-1 → 3D LUT 13a-2 → Bus switch 13
a-3 → SCSI control section 14b → PC21.

Next, an outline of a system processing sequence between the film scanner 10a and the PC 21 will be described. FIG. 6 is a diagram showing a processing sequence of a system including the film scanner 10a and the PC 21. The film scanner 10a and the PC 21 are connected to a SCSI with a high data transfer speed.
Connected by In the figure, dotted arrows indicate serial communication, broken arrows indicate control lines, and thick arrows indicate data. [S20] The film scanner 10a pre-scans the image film. [S21] The film scanner 10a performs color adjustment (when correction parameters are received, based on the correction parameters).
Generate a prescan image. [S22] The film scanner 10a transfers the prescan image to the PC 21. [S23] The PC 21 displays a pre-scan image. [S24] The user 30 confirms the pre-scanned image and performs color correction. If the color correction is completed, the process proceeds to step S26. If the color correction is necessary, a correction parameter is set and the process proceeds to step S25.
Go to [S25] The PC 21 transmits the correction parameters to the film scanner 10a. [S26] A color correction end notification is set in the PC 21. [S27] The PC 21 transmits the optimum correction parameter, that is, the final correction parameter to the film scanner 10a. [S28] The film scanner 10a performs a main scan. [S29] The film scanner 10a performs color adjustment using the optimal correction parameters at the end of color correction. [S30] The film scanner 10a transfers the main scan image after color adjustment using the optimum correction parameters. [S31] The PC 21 displays the main scan image.

As described above, the film scanner 10a of the present invention is configured to perform color adjustment inside the film scanner 10a and transfer the image after the color adjustment. This makes it possible to perform color adjustment efficiently without depending on the processing capacity of the PC 21 to be connected.

Also, since the color-converted image is transferred by the film scanner 10a, only the relative correction parameters need to be provided on the PC 21, and the user always checks the color-converted image on the film scanner 10a side. Meanwhile, color correction can be performed.

In the above description, the image reading processing device 10 is described as the film scanner 10a, but the present invention can be applied to other image scanners and the like. Next, the image processing method of the present invention will be described. FIG. 7 is a flowchart showing a processing procedure of the image processing method of the present invention. The image processing method performs image processing between the image reading processing device and an external terminal. [S40] An image is read and image processing is performed to generate a preliminary image. [S41] The image reading processing device transfers the preliminary image to the terminal. [S42] The terminal sets correction parameters for image processing. [S43] The image reading processing device performs image processing on the preliminary image based on the correction parameters. [S44] Image processing correction including transfer of a preliminary image, setting of correction parameters, and image processing based on the correction parameters is repeated between the image reading processing device and the terminal, and the terminal determines the optimum correction parameters. [S45] The terminal sets an image processing correction end notification. [S46] The image reading processing device reads the image again. [S47] The image reading processing device performs image processing using the optimum correction parameters to generate an optimum image processing image. [S48] The image reading processing device transfers the optimal image processing image to the terminal.

As described above, the image processing method of the present invention performs image processing on a read image and transfers the read image to a terminal, further performs image processing based on a correction parameter from the terminal, and transfers the image again. did. This allows the terminal to send only the correction parameters without performing the image processing, so that the image processing can be performed efficiently without depending on the processing capability of the terminal.

[0049]

As described above, the image reading processing apparatus of the present invention is provided with an image processing means for performing image processing on a read image and transferring the image after the image processing. Thus, since image processing such as color adjustment can be performed inside the image reading processing apparatus, image processing can be performed efficiently without depending on the processing capability of the connected terminal.

Also, the image reading processing method of the present invention
The read image is subjected to image processing and transferred to the terminal, and further subjected to image processing based on a correction parameter from the terminal and transferred again. This allows the terminal to send only the correction parameters without performing image processing,
Image processing can be performed efficiently without depending on the processing capability of the terminal.

[Brief description of the drawings]

FIG. 1 is a principle diagram of an image reading processing device according to the present invention.

FIG. 2 is a flowchart showing an operation procedure of the image reading processing device of the present invention.

FIG. 3 is a diagram showing an internal configuration of a film scanner.

FIG. 4 is a flowchart showing the overall operation of the film scanner.

FIG. 5 is a diagram showing a data flow of the system.

FIG. 6 is a diagram showing a processing sequence of a system including a film scanner and a PC.

FIG. 7 is a flowchart showing a processing procedure of the image processing method of the present invention.

FIG. 8 is a diagram showing a processing sequence of a conventional system including a film scanner and a PC.

[Explanation of symbols]

10 image reading processing device, 11 image reading means, 12 image storage means, 13 image processing means,
14 ... image transfer means, 20 ... terminal, P ... correction amount.

Claims (7)

[Claims] 1. An image reading processing apparatus for reading and transferring an image, comprising: an image reading means for reading an image; an image storage means for storing the read image; An image reading processing apparatus, comprising: an image processing unit configured to perform image processing on the image based on the correction amount; and an image transfer unit configured to transfer the image after the image processing. 2. The image reading processing apparatus according to claim 1, further comprising image compression means for compressing the read image. 3. The image reading processing apparatus according to claim 1, wherein the image reading processing apparatus is operated by being connected to a terminal. 4. The apparatus according to claim 1, wherein said image processing means performs color adjustment as said image processing. 5. The image reading processing apparatus according to claim 1, wherein the image processing unit performs the image processing based on a relative correction parameter as the correction amount. 6. An image processing method for performing image processing between an image reading processing device and an external terminal, wherein the image reading processing device reads an image, performs image processing to generate a preliminary image, and reads the image. A processing device that transfers the preliminary image to the terminal, the terminal sets a correction parameter for the image processing, and the image reading processing device performs the image processing on the preliminary image based on the correction parameter. Between the image reading processing device and the terminal, transfer of the preliminary image, the image processing based on the setting of the correction parameter and the image processing based on the correction parameter, repeat the image processing correction, the optimal correction parameter in the terminal Setting, the terminal sets an image processing correction end notification, and the image reading processing device reads the image again. Wherein the image reading processing device performs the image processing with the optimal correction parameter to generate an optimally processed image, and the image reading processing device transfers the optimally processed image to the terminal. Method. 7. The image processing method according to claim 6, wherein color adjustment is performed as the image processing.