JPH0252570A - Picture processing unit - Google Patents

Abstract

PURPOSE:To attain effective utilization of an output picture by providing a memory storing a density data conversion table generated as to each picture to be displayed and an image memory editing plural pictures to be outputted. CONSTITUTION:A density data conversion table is generated based on a level window value set as to each picture while observing a picture displayed on a display device 5. The table is stored in a conversion table memory 13 of a picture processing section 4, a density conversion table is referenced to apply density conversion as to each picture data itself on the image memory 14. Thus, plural pictures with different level window for each picture are displayed on one pattern, of the display device 5 and plural pictures are outputted to a picture recording medium by an external copying machine 6 with the similar density to that of the picture confirmed by the pattern of the display device 6 and the output picture is utilized effectively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to image processing that performs various image processing on image data, displays the output data on a screen, and records the image on an image recording medium. The present invention relates to an image processing apparatus, and particularly to an image processing apparatus that can convert data into a density range set for each image, display and record the data when editing a plurality of images and recording an i-collection of images on an image recording medium.

[Conventional technology]

A conventional image processing device of this type, as shown in FIG.
A storage device 1 for storing image data, a central processing unit (CPU) 2 for performing various image processing on the image data from the storage device 1, and a display memory 3 for storing the results of the image processing. an image processing section 4 having an image processing section 4, a display 5 for displaying output data from the image processing section 4, an external copying device 6 for recording the output data on an image recording medium, and operations for operating each of the above components. It consisted of 7 tables. In FIG. 5, the reference numeral 8 is an external storage device for storing a plurality of image data, the reference numeral 9 is a main path connecting each component to the CPU 2, and the reference numeral 10 is an interface for connecting the external copying device 6. , reference numeral 11 is an interface for connecting the operator console 7, and reference numeral 12 is an interface for connecting the external storage device 8.

In such an image processing apparatus, in order to display image data obtained from an image input device or the like as a grayscale image on the display 5, density conversion is performed to make each data value correspond to a certain density. At this time, the display density setting is
This was done by adjusting the display density center value (level) and display density width (window) to display images at appropriate density. This density conversion is performed by storing a density data conversion table value in a ROM (read-only memory) that exists as a hardware inside the Desplay 5, and comparing it with the density information of the input image data and outputting it. It was converted into image density information.

[Problems to be Solved by the Invention] However, in such a conventional image processing device, since the ROM in the display 5 stores the conversion table values of density data, one screen of the display 5 can only process one type of density data. Only the level window could be set. Therefore, when displaying multiple images with different level windows on the screen of the display 5, only one image can be set to an appropriate display density, but the other images cannot be set to an appropriate display density. Met.

Furthermore, when outputting an image to an image recording medium such as a photo film using an external copying device 6 such as a laser printer, the density of the displayed image is simply converted to the ROM in the display 5 as described above. In this case, the density conversion of the actual image data was not performed, and the result was that the output image from the external copying device 6 and the image displayed on the display 5 had different densities. Therefore, no matter how appropriate the display density is set on the display 5, the density will not be appropriate for an image recorded and left on a single image recording medium, and the output image cannot be used effectively.

Therefore, one object of the present invention is to provide an image processing apparatus that can solve such problems.

[Means to solve the problem]

In order to achieve the above object, an image processing device according to the present invention includes a storage device that stores image data, a central processing device that performs various image processing on the image data from this storage device, and a central processing device that performs various image processing on the image data from the storage device. an image processing unit having a display memory for storing data for display; a display for displaying output data from the image processing unit; an external copying device for recording the output data on an image recording medium; and operations for each of the above components. In an image processing apparatus comprising an operation console for performing
A conversion table memory is provided for storing a density data conversion table created for each image to be displayed, and an image memory for editing a plurality of images to be output is provided inside the image processing section or external copying device. be.

[Effect]

The image processing apparatus configured in this manner edits a plurality of images to be output on an image memory provided inside the image processing section or an external copying apparatus. At this time, while viewing the images displayed on the display, a density data conversion table is created based on the level and window values set for each image, and is stored in a conversion table memory provided inside the image processing section. Then, referring to the density data conversion table for each image read from the conversion table memory, density conversion is performed for each image data entity on the image memory.

This makes it possible to display multiple images, each with a different level and window, on a single screen of the display, and to print the image onto an external copying device with the same density as the image confirmed on the display screen. Multiple images can be output to a recording medium.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of an image processing apparatus according to the present invention. This image processing device performs various image processing on image data, displays the output data on a screen, and records the image on an image recording medium.
As shown in FIG. 1, the image processing section 4 and the display 5
, an external copying device 6 , and an operation console 7 .

The image processing unit 4 performs various types of image processing on one image data, and includes a storage device 1 such as a magnetic disk that stores image data, and various types of image processing on the image data read out from the storage device 1. It has a CPU 2 that performs image processing and controls other components, and a display memory 3 that stores image data in order to display the results of the image processing performed by the CPU 2. The display 5 displays the image data output from the image processing section 4, and is composed of, for example, a CRT monitor. The external copying device 6 records the image data output from the image processing section 4 on an image recording medium such as film, and is composed of, for example, a laser printer. The operation console 7 is used to operate each of the above components, and includes control keys, switches, a display, and the like.

In FIG. 1, reference numeral 8 indicates an external storage device that stores a plurality of image data, and reference numeral 9 indicates each component and the above-mentioned CPU.
2, the reference numeral 1° is an interface for connecting the external copying device 6, the reference numeral 11 is an interface for connecting the operation console 7, and the reference numeral 12 is an external storage device R.
This is an interface for connecting 8.

Here, in one aspect of the present invention, a conversion table memory 13 and an image memory 14 are provided inside the image processing section 4.

The conversion table memory 13 stores a density data conversion table created for each image to be displayed on the screen of the display 5, and is composed of, for example, a RAM (random read/write memory). Further, the image memory 14 is
This is for editing a plurality of images to be output to the external copying device 6. For example, two images 11+I! It is said to be a memory with a capacity that can store .

Next, the operation of the image processing apparatus configured as described above will be described with reference to a flowchart represented by a PAD shown in FIG. First, a mode for outputting an image to the external copy bag [6] is selected using the operation console 7 shown in FIG. When the image output mode is selected in this manner, the editing flag is set to 10'' as shown in step A of FIG.

This is a flag for editing the image in the image memory 14 shown in FIG.
I It indicates the end of editing at that time. Next, the number of edited images is set to "0" (step B). When the initialization settings are completed in this way, processing D-K is performed until the 1 edit flag becomes 1" (step C). First, select the image and process D). Next, it is checked whether the selected image is correct or not (process F), and if it is correct, the number of edited images is added by 1'' (process G). At this time.

If the selected image is incorrect, no addition is performed.

Next, in order to select whether or not to end the editing settings, a change input is made to the m collection flag (processing H), and the 1 editing flag is changed (processing I). At this time, if you want to finish editing,
Set the edit flag to '1' (Process J), and if you want to continue editing, set the edit flag to '0' (Process K). In this way, single image editing settings are performed. When the one-image editing setting is completed, the process moves to the next step of image editing operation.

According to the image editing settings described above, unless the editing flag of the image is "O", processing M to 0 is performed (step L).

First, a density data conversion table is created using the level window of the first image set above and stored in the conversion table memory 13 shown in FIG. 1 (processing M). Here, the creation of the density data conversion table will be explained with reference to FIG. 3. In the graph of FIG. 3, the first quadrant represents the input data input to the display 5 and the concentration data D.
1, the fourth quadrant shows the relationship between the conversion characteristics of the input data and the conversion data D2 for performing density data conversion, and the third quadrant shows the relationship between the conversion characteristics of the input data and the conversion data D2 for performing density data conversion, and the third quadrant shows the relationship between the conversion characteristics of the input data and the conversion data D2 for performing density data conversion. This figure shows the relationship between the frequency of the display density D3 and the frequency of the display density D3. As shown in the first quadrant of FIG. 3, the image displayed on the display 5 is centered around a dotted level of a certain density.

When display is set in a certain density area W (window), the display density is converted data D! shown in the fourth quadrant. By creating a concentration data conversion table using the curve, the concentration information is displayed only in the concentration region W, and as shown in the third quadrant, concentration information in regions other than the concentration range is indistinguishable and easy to observe. Adjust the level window to concentration. Therefore, the creation of the concentration data conversion table is based on this adjusted level.
Based on the window value, convert data D as shown in the fourth quadrant.
It can be created using a z curve.

Next, after storing the density data conversion table created as described above in the conversion table memory 13 shown in FIG. Data conversion is performed using the density data conversion table in the memory 13, and the image data (for example, I+) is stored in a predetermined position in the image memory 14 shown in FIG. 1 (processing N). In this way, after performing the above processing up to N on the first image 11, the number of edited images is subtracted by ``1'' (O), and the above processing M-0 is repeated until the number of edited images becomes 0''. perform an action. When the number of images in the 1m collection reaches O# and editing is completed, the output operation to the external copying device 6 shown in FIG. do.

FIG. 4 is a block diagram showing another embodiment of the present invention.

This example is an image memo in the image processing section 4! 714
' is a small-capacity memory that can store only - images, and is inside the external copying device 6'.

Multiple images to be output 11. A buffer memory 15 is provided as an image memory for editing I2. In this case, the image processing section 4 does not need to include the large capacity image memory 14, but only needs to have a small capacity memory for -images, so it can be downsized. Furthermore, the image memory 14' can only perform density conversion of image data, regardless of the output format of a plurality of images.

Note that the image memory 14 in FIG. 1 or the buffer memory 1 provided in the external copying device 6' in FIG.
5 is a memory having a capacity capable of storing two images 2, respectively, but the present invention is not limited to this, and may be a memory having a capacity capable of storing three or more images.

〔Effect of the invention〕

Since the present invention is configured as described above, the display 5
A density data conversion table is created based on the level and window values set for each image while looking at the images displayed on the screen, and is stored in the conversion table memory 13 provided inside the image processing section 4. With reference to the density data conversion table for each image read from No. 13.

Density conversion can be performed for each image data entity on the image memory 14, 14'. Therefore, it is possible to display a plurality of images with different level windows for each image on one screen of the display 5, and also to display images on the external copying device 6° with the same density as the image confirmed on the screen of the display 5. 6' allows a plurality of images to be output to an image recording medium. Therefore, the output image can be effectively used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the image processing apparatus according to the present invention, FIG. 2 is a flowchart using a PAD to explain its operation, and FIG. 3 is a flowchart showing the creation of a density data conversion table. 4 is a block diagram showing another embodiment of the present invention, and FIG. 5 is a block diagram showing a conventional image processing apparatus. 1...Storage device, 2...Central processing unit (CPU),
3...Display memory, 4...Image processing section, 5
...Display, 6,6'...External copying device, 7
...Operation console, 8...External storage device, 13...Conversion table memory, 14.14'...Image memory,
15...Buffer memory. Figure 2

Claims (1)

[Claims] 1. An image processing unit having a storage device for storing image data, a central processing unit for performing various image processing on the image data from the storage device, and a display memory for displaying the results of the image processing. , an image processing device comprising a display for displaying output data from the image processing section, an external copying device for recording the output data on an image recording medium, and an operation console for operating each of the above components. In the above image processing section,
A conversion table memory is provided to store a density data conversion table created for each image to be displayed, and an image memory for editing a plurality of images to be output is provided inside the image processing section or external copying device. Characteristic image processing device.