JPS63289566A - Image processing method - Google Patents

Abstract

PURPOSE:To recognize the region where the regions assigned by plural region assignment colors overlap as either of the regions even when said regions overlap by previously setting priority order to the region assignment colors. CONSTITUTION:The priority order is set to the respective region assignment colors so that the part overlapping on the region assigned by the region assignment color of the higher priority order within the region assigned by the region assignment color of the lower priority sequence is not detected as the region in the case of sequentially reading the originals subjected to the region assignment by the plural region assignment colors different from original colors 6 and detecting, in real time, the assigned regions 4, 5. Namely, the processing to determine the taking-out of the overlapped regions as which of the regions is executed in a region processing circuit 3. The region extraction by the prescribed priority order is thereby executed even if the regions assigned by the different region assignment colors overlap.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing method for a designated area of an image read from a document.

[Purpose of the invention]

An object of the present invention is to make it possible to recognize any of the regions when regions designated by a plurality of region designation colors overlap.

〔Example〕

FIG. 1 is a diagram showing the entire block diagram of image processing. 1
is a document reading device, which uses an image sensor such as a CCD to read the image of the document illuminated by a reading light source, and
Performs processing such as conversion, shading correction, color separation, color ghost correction, and MTF correction. Then, N+ is the sum of the N area designation colors written in advance on the manuscript and the manuscript color.
1 color and output the respective color signals P0, Pl,...
・、P.

Output. Note that Po is a color signal of the original color.

2 is an area detection circuit, which receives color signals Po, P+, . . .
The area specified by the color is detected from the PN and area signals Q1, Q2, . . . , Q9 are output.

3 is a region processing circuit, which processes region signals Q+, Qz, . . .
・Input QN and perform the processing described later to obtain the area signal R.
4, R2, . . . , outputs RN.

FIG. 2 is a diagram showing area designation when there are two area designation colors, that is, N=2. 4 is the first area designation color, 5 is the second
These are area specification colors, and each specifies a specific area using a closed loop. 6 is a manuscript.

As shown in Figure 2 (al), when specifying an area using two colors,
As shown in FIG. 2(b), the area specified with the first area specification color 4 is detected as an area 40 indicated by left diagonal hunting, and the area specified with the second area specification color 5 is detected on the right side. It is detected as a region 50 indicated by diagonal hunting. Therefore,
Here, the area specified by one area specification color overlaps the area specified by the other area specification color, and it is necessary to decide which area to extract the overlapping area as. is performed in the region processing circuit 3.

In this embodiment, a higher priority is set in advance for the area designation color 4 than for the area designation color 5, so that the area specified by the area designation color 4 is preferentially extracted in the area processing circuit 3. Therefore, as shown in Figure 2 tel,
Region 40 will be extracted.

FIG. 3 is a diagram showing a specific circuit of the area processing circuit 3 for giving priority. In this circuit, the area signal Ql
＞Qz ＞...>Priority is set in the order of QN.

The priority order of the area specification colors described above can be determined by providing a plurality of priority order setting circuits in the area processing circuit 3 and selecting one of them from the operation panel to set the desired priority order. Alternatively, if no special settings are made from the operation unit, preset priorities may be used.

〔Effect of the invention〕

As described above, according to the present invention, even if regions designated by different region designation colors overlap, region extraction is performed according to a predetermined priority order.

[Brief explanation of drawings]

Fig. 1 is a block diagram of image processing according to an embodiment of the present invention, Figs. 2 (a) to (C) are explanatory diagrams of area detection of two specified areas in an overlapping relationship, and Fig. 3 is an illustration of area detection. FIG. 3 is a circuit diagram of priority setting. Agent Patent Attorney Tsuneaki Nagao Figure 1 Figure 2 <a') (b) (C)

Claims (3)

[Claims] (1) In an image processing method that sequentially reads a document with areas specified by multiple area specification colors different from the original color and detects the specified areas in real time, a priority is set for each area specification color, and the priority An image processing method that prevents a portion of an area specified by a low priority area specification color that overlaps with an area specified by a high priority area specification color from being detected as an area. (2) The image processing method according to claim 1, wherein the priority order of the area designated colors can be set from an operation unit. (3) Claim 2 in which a preset priority order is used when the priority order is not set on the operation unit.
Image processing method described in section.