JPS6224375A - Filtering control system - Google Patents

Abstract

PURPOSE:To attain the enlargement for each segmenting unit with a simple constitution by adding an adder to a filtering device which segments a picture for each prescribed area and displays the density of the picture at the center of a desired area. CONSTITUTION:The density of pictures is displayed for each (10X10) area by means of a filtering device 1 having a prescribed (5X5) area. In this case, the (10X10) area is divided into 4 pieces of (5X5) areas D, E, F and G. When a control device (part) 2 indicates (10X10), the device 1 segments the picture data supplied from a picture memory 4 and calculates the densities (d, e, f and g) of the areas D-G respectively. These densities are written to each center corresponding to the (5X5) areas of the memory 4. Furthermore the device 1 extracts those densities (d-g) to supply them to an adder 3 and writes the result of this addition to the center of the (10X10) of the memory 4 in the form of the (10X10) densities.

Description

[Detailed Description of the Invention] [Summary] This is a filtering control system, in which an adder is provided in a filtering device that cuts out an image into units of a predetermined area and displays the gray scale of the image, and performs filtering by enlarging the predetermined area. By adding the shading for each predetermined unit, the shading of an enlarged area is obtained, and filtering can be expanded.

[Industrial application field]

The present invention relates to a filtering control method that can expand the area of filtering in a filtering device used for image processing.

Image processing devices using display devices and the like are used in the field of information processing.

This image processing is performed not only on two-dimensional images but also on three-dimensional images.

A filtering device is used as one of the means for handling stereoscopic images. This filtering device displays the density in units of a predetermined area of an image. Therefore, there is a need for an efficient filtering control system that can arbitrarily enlarge a predetermined area.

[Conventional technology]

Image filtering involves cutting out an image into a predetermined area and displaying the density within the predetermined unit area at the center of the area. Filtering will be explained with reference to FIG.

For example, 5×5 (
Assume that a filter (omitted after the unit dot) is used.

The image data is stored in the image memory 4, and the filtering device 1 retrieves this image data. The input image is 1
If the size is 0 x 10 and extraction is performed in units of 5 x 5, the extraction unit will be the first extraction as shown by the solid line in Figure 4, then the second extraction as shown by the dotted line, and sequentially 10 The extraction is performed by moving one pixel to the right until the first time.

Next, the image is moved one pixel in the Y-axis direction and the 111th extraction is performed. Therefore, the 10×10 image is extracted for the 100th time and the extraction is completed.

Each time it is extracted, the filtering device 1 extracts the 5×5 B(i,j) stored in the register 1-1 and A(
i and D are input to the calculation unit 1-2.

The calculation unit 1-2 calculates Σ(A (i+j) x B (i,
j))). The filtering device 1 sequentially stores the calculation results in the center of each corresponding cutout portion of the image memory 4 (as shown in FIG. 5) starting from the first result.
Write up to the 00th result.

However, if the unit to be extracted protrudes from the input image as in the first and second calculations, as shown in Figure 6, the pixels in the protruding portion are assumed to have a density value of "0" and are calculated. do.

However, commonly used filtering devices limit the cutting unit to a maximum of 5×5.

Therefore, the amount of image data is large, for example 10 x 1
If an attempt is made to extract 0, the above-mentioned calculations must be performed by software, resulting in a slow processing speed and the inconvenience of having to change the size of the processing device used as the control section.

[Problem that the invention seeks to solve]

In the conventional method, the maximum number of filtering units is 5.
×5, making it difficult to enlarge.

The present invention was created in view of these points, and an object of the present invention is to provide a filtering control method that can enlarge the extraction unit with a simple configuration.

[Means for solving problems]

An adder is provided in a filtering device that cuts out an image into units of a predetermined area and displays shading of the image in the center of the required area.

[Effect]

When filtering is performed by enlarging a predetermined area, each shade within the predetermined area is added based on the enlarged area, and the addition result is used as the shade of the enlarged area.

In the present invention, filtering of an enlarged unit can be performed by simply adding the shading of a predetermined area within the enlarged area, and processing can be performed at high speed and efficient filtering control can be performed without depending on the control device.

〔Example〕

FIG. 1 shows an embodiment of the present invention, in which a filtering device 1 is connected to a control section 2 that performs control. This control section 2 generally uses a processing device. An adder 3 is attached to the filtering device l. An image memory 4 for storing image data is also connected to the filtering device 1.

For example, a case where the filtering device 1 with a predetermined area of 5 x 5 is used to display shading in units of area of 10 x 10 will be explained using FIG. 2. As shown in Fig. 2(a), an area of 10 x 10 is divided into four 5 x 5, i.e.
Divided into D, E, F, and G.

When the processing device 2 instructs 10 x 10, the filtering device 1 cuts out the image data input from the image memory, and divides the image data into shading 42 of D, then shading e of E.

The gradations f and g are sequentially calculated to correspond to each 5×5 image memory 4. Write this shade in the center of each.

Furthermore, the filtering device 1 has a density of 4 (1 it).

Take out e, f, and g, input them to the adder 3, and add the result to the image memory 4 at the center of 10 x 10.
Write as 0 shading.

If a filtering device with a predetermined area of 5×5 is used, 7
When enlarging ×7, it becomes as shown in Figure 2 (bl).In other words, it is divided into 4 parts, and each E
, F, and G are subjected to concentration calculations with the concentration set to 0.
The densities d, , e, f, and g are determined and added. The addition result is 10 x 10 as shown in Figure 2 ('b).
written in the center of

〔Effect of the invention〕

As described above, according to the present invention, the cropping area of image data can be arbitrarily expanded with an extremely simple configuration.
It is extremely effective in practice.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 (81 is an explanatory diagram in the case of 10 x 10 enlargement,
is an explanatory diagram for the case of 7x7 expansion, Figure 3 is a conventional system configuration diagram, Figure 4 is a block diagram to explain the conventional filtering control method, and Figure 5 is a schematic diagram showing storage of calculation results. FIG. 6 is a schematic diagram for explaining the handling in the case where the take-out unit protrudes. In the figure, ■ is a filtering device, 2 is a control device, 8 is a filter, and 2 is a filter. Figure 2 (01 7 x 7 (scream ←) - 1st order's annotation flash @ 2 Figure (b) Image 2i, ssi again file 1 - Karasumi fshij'lD 3rd
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Claims (1)

[Claims] In a system comprising a filtering device (1) that cuts out an input image into predetermined area units and displays shading of the image in the center of the predetermined area, and a control unit (2) that controls the filtering device, the filtering device A filtering control system comprising: an adder (3), and when performing filtering in which the predetermined area is enlarged, each of the shadings within the enlarged area is added to obtain the shading of the enlarged area.