JPH04143869A - Picture processing method - Google Patents

Abstract

PURPOSE:To quickly obtain a desired picture by setting a processing area which has picture information related to picture information of density data or the like of a specific point, which is designated in a desired area of an original picture, in a certain condition. CONSTITUTION:A processing area 52 to be subjected to desired picture processing is set in a specific area 50. A CPU reads out picture data (r), (g), and (b) of the original picture 44 corresponding to a specific point 46 from an original picture storage part with respect to each color. A look up table is generated in accordance with these picture data (r), (g), and (b) and preliminarily set density width DELTAr, DELTAg, and DELTAb. This look up table is used to convert the original picture 44 in the specific area 50. Mask data of respective colors R, G, and B are generated. Thus, a desired picture processing range is easily set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing method that can set a processing area in an original image and perform desired image processing on the image within this area.

[Prior Art] Various methods have been proposed to obtain a desired image by performing image processing such as gradation correction and edge enhancement on an original image read by an image scanner or the like. In this case, if image processing is uniformly performed without specifying the processing range for the original image, some parts will be appropriately processed and some parts will not be.

Therefore, for example, it is read with an image scanner etc.
A method has been proposed in which a processing portion of an original image displayed on a CRT is specified using a light pen or the like, and desired image processing is performed on that portion.

[Problems to be Solved by the Invention] However, in the above method, although desired image processing can be performed on a specific range, there is a drawback that specifying the specific range is extremely troublesome.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an image processing method in which it is extremely easy to specify an image processing range for an original image, and thereby a desired image can be quickly obtained.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides an image processing method that performs desired image processing on a specific processing area of an original image, including displaying the original image on a CRT. At the same time, the specific point and the area determined by the parameter are simultaneously displayed in an overlapping manner, and then, after setting a specific area having image information that is associated under certain conditions with the image information of the original image corresponding to the specific point, The present invention is characterized in that a specific area is displayed on the CRT and desired image processing is performed on the specific area.

[Operation] As described above, in the image processing method according to the present invention, a processing area having image information that can be associated under certain conditions with image information such as density data of a specific point specified within a desired area of an original image. can be set, and desired image processing can be performed on this processing area. In this case, the processing area is automatically set based on the image information of the specific point, so
This makes it possible to quickly obtain a desired image.

[Examples] The image processing method according to the present invention will be described in detail below by giving examples and referring to the accompanying drawings.

FIG. 1 shows a schematic configuration of an apparatus to which the image processing method of this embodiment is applied.

In the figure, reference numeral 10 indicates an image processing device, and this image processing device 10 is connected to a CC via an A/D converter 12.
The D camera 14 is connected, and the console 16 is also connected. CCD camera 14 has RGB switching filter 1
8, the original image recorded on the document S is read.

The console 16 includes a CRT display 20, a keyboard 22, and a mouse 24, and gives desired instructions to the image processing apparatus 10 based on the original image displayed on the CRT display 20 or a processed image to be described later.

The image processing device 10 includes a CPU 26, a ROM 28, a processing condition storage section 30, a pre-LU storage section 32, an original image storage section 34R,
34G, 34B, a mask storage section 36, and a processed image storage section 38R138G, 38B, which are connected to a bus 40.

Note that a printer 42 is connected to the bus 40 for outputting the processed image as a hard copy.

The CPU 26 controls the entire image processing device 10, and
The OM 28 holds a program that defines the processing procedure in the CPU 26. The processing condition storage unit 30 stores processing conditions for the original image set using the keyboard 22 or the mouse 24. The pre-LU storage unit 32 stores a look-up table (LUT) for converting an original image into a processed image based on the processing conditions, or for creating mask data to be described later.

The original image storage units 34R, 34G, and 34B are separated by an RGB switching filter 18 and store original images of RSG and B colors read by the CCD camera 14. The mask storage unit 36 stores a specific area set to perform desired image processing on the original image as mask data. The processed image storage units 38R138G and 38B store processed images obtained by performing desired image processing on the specific area of the original image.

The image processing device 10 to which the image processing method according to the present embodiment is applied is basically configured and constructed as described above.Next, the image processing method using this image processing device IO will be explained. .

First, the original image reading operation will be explained based on the flowchart shown in FIG.

The original image recorded on the document S is read by the CCD camera 14 with the RGB switching filter 18 set to R (S1, S2). The original image read is an A/D converter]
After being converted into a digital signal by step 2, it is stored in the original image storage section 34R via the bus 40 and displayed on the CRT display 20 of the console 16 (S3
, S4). Next, the operations from 82 to S4 are repeated with the RGB switching filter 18 set to G and B, and the respective original images are stored in the original image storage sections 34G and 34B (S5).

Next, a case will be described in which a processing area is set for the original image based on the flowchart of FIG.

First, as shown in FIG. 4, display the original image 44 on the CRT display 20 (510), and use the mouse 24 to mark a specific point 46 on the original image 44 where desired image processing is to be performed, for example on the face. Match (311). Next, the diameter of the circumference 48 centered on the specific point 46 is adjusted using the mouse 24, and a specific area 50 surrounded by the circumference 48 is
is set (312). In addition, specific area 5G is mouse 2
4 can be arbitrarily adjusted.

Next, within the specific area 50, a processing area 52 to perform desired image processing is set.

Therefore, first, the CPU 26 reads image data r, g, and b of the original image 44 corresponding to the specific point 46 from the original image storage units 34R134G and 34B for each color (313). Then, lookup tables shown in FIG. The original image 44 within the area 50 is transformed (S14 to 516). In this way, mask data for each color of RSG and B is created.

Next, the RSG created as described above.

By determining the common portion of the mask data for each color of B, a common mask is created that defines a processing area 52 that is within the specific area 50 of the original image 44 and within a predetermined set density width (S17 ). The mask image 54 of this common mask is displayed on the CRT display 20 as shown in FIG. 6 (318). If the operator desires the mask image 54 shown in FIG. 6 (S19), the operator stores the corresponding mask image in the mask memory R36 (320). Furthermore, if the mask image 54 is not the desired one, the desired mask image 54 can be obtained by repeating the processes from 310 to S18 again.

Next, a case in which desired image processing is performed on the original image 44 within the processing area 52 will be described according to the flowchart in FIG.

First, the operator uses the mouse 24 or the keyboard 22.
Processing conditions are set using (S20). in this case,
As shown in FIG. 8, an original image 44 and a processing area 52 are displayed on the CRT display 20, and
A plurality of processing condition setting marks 59 are displayed. Note that this processing condition setting mark 59 is, for example,
It is assumed that the original image 44 in 2 is compatible with processing conditions such as making it "brighter" or "darker" than the one currently displayed.

Therefore, when the operator selects desired processing conditions using the mouse 24, the CPU 26 in the image processing apparatus 10
is the lookup table corresponding to the processing conditions as LU
Selected from the previous storage section 32, original image storage sections 34R, 34G
, 34B are subjected to gradation conversion to the original images 44 of each color and stored as processed images in the processed image storage unit 3.
8R, 38G, and 38B (S21).

Next, the CPU 26 executes the processing image storage sections 38R and 38G.
, 38B 522), and the processed images and the mask image 54 stored in the mask storage unit 36.
The common part 55 with is extracted as shown in FIG.
323).

Note that this common portion 55 can be obtained by calculating the logical product of the processed image and mask data.

Subsequently, the CPU 26 stores the mask data in the pre-LO storage section 32.
An inverted mask image is created by inverting using a lookup table (see FIG. 10) stored in the image, and a common portion 57 between this inverted mask image and the processed image is extracted as shown in FIG. (S24).

Finally, the common portion 55 obtained in step 323 (see FIG. 9) and the common portion 57 obtained in step 324 (see FIG. 11) are synthesized (S25>. Note that this synthesis is performed for each common portion 5
It can be executed by the logical sum of 5.57. Therefore, by performing this processing for each color of R, G, and B (S26) and further compositing, the inside of the processing area 52 becomes the processed image 56, and the outside of the processing area 52 becomes the original image. A composite image 58 that becomes image 44 can be obtained. This composite image 58 is displayed on the CRT display 20 (32
7). Note that if it is not the desired composite image 58, S
By repeating the processes 20 to 327, a desired composite image 58 can be obtained (S28).

Second, although the above explanation deals with the case where the processing area 52 is set within the specific area 50 defined by a circle with respect to the original image 44, the shape of the specific area 50 is different from the shape outside Tanabe. It is also possible to do so. In addition, the specific area 50 with a high degree of freedom is
It is also possible to create a zero shape. That is, the third
In 311 of the figure, a plurality of specific points 46 and specific areas 5
You can specify 0 and connect them as a logical OR. Furthermore, specific regions 50 of various shapes can be created using arbitrary logical formulas.
can be formed.

[Effects of the Invention] As described above, according to the image processing method according to the present invention, the following effects can be obtained.

That is, by specifying a specific point on the original image and setting a processing area based on the image information of the specific point,
A desired image processing range can be easily set. Therefore, it is possible to quickly shift from the image processing range setting work to the image processing work, which is particularly convenient when adjusting an image by setting various image processing conditions, for example.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of an image processing apparatus to which an embodiment of the image processing method according to the present invention is applied. FIG. 2 is a flowchart of an original image reading process in the image processing method according to the present invention. 3 is a flowchart of mask image creation in the image processing method according to the present invention, FIG. 4 is an explanatory diagram of the display when setting a specific area and processing area in the image processing method according to the present invention, and FIG. An explanatory diagram of a lookup table for setting a processing area in the image processing method according to the present invention, FIG. 6 is an explanatory diagram of a mask image in the image processing method according to the present invention, and FIG. 7 is an explanatory diagram of the image processing according to the present invention. Flowchart of image processing in the method; FIG. 8 is an explanatory diagram of display when setting processing conditions in the image processing method according to the present invention; FIGS. 9 and 11 are common parts in the image processing method according to the present invention. FIG. 10 is an explanatory diagram of a look-up table when creating an inverted mask image in the image processing method according to the present invention, and FIG. 12 is a composite image in the image processing method according to the present invention. It is an explanatory diagram of the display. 10... Image processing device 14... CCD camera 16... Console 20... CRT display 22... Keyboard 24... Mouse 26... CPU 28... ROM 30... Processing conditions Storage section 32... LU front storage section 34R, 34G, 34B... Original image storage section 36...
Mask storage unit 38R138G, 38B...processed image storage unit 42...
- Printer 44...Original image 46...Specific point 50...Specific area 52...Processing area 54...Mask image 56...Processing image 58...Synthetic image 59...Processing conditions setting mark

Claims (1)

[Claims] (1) In an image processing method that performs desired image processing on a specific processing area of an original image, the original image is displayed on a CRT, and areas determined by specific points and parameters are simultaneously displayed in an overlapping manner, and then, After setting a specific area having image information that is associated under certain conditions with the image information of the original image corresponding to the specific point, displaying the specific area on the CRT and displaying a desired image for the specific area. An image processing method characterized by performing processing.