JPS61134879A - Picture processing unit - Google Patents

Abstract

PURPOSE:To retrieve simply and efficiently the result of processing of a desired picture part by providing a reference memory storing an address data and in which an address corresponding to an address of a picture obtaining information has written information. CONSTITUTION:In obtaining the result of processing of a picture for a specific area, representative point addresses (X,Y) of the specific area are designated. The address corresponding to the said addresses (X,Y) of a reference work memory 4 is accessed by the address designation and data (address data corresponding to a table memory 3) stored in the address is read. Thus, the table memory 3 is accessed by the address data read from the reference work memory and the result of processing to a picture of the said specific area stored in the said address is read from the table memory 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a highly practical image processing apparatus that is capable of efficiently accessing the processing results of an image by using position information (address) of the image.

[Technical background of the invention and its problems]

In an image processing process, information obtained by processing an input image is often searched in correspondence with the input image. For example, a drawing reading device recognizes various symbols (symbol marks and part codes) written on a drawing, and stores the recognition results in correspondence with position information on the drawing. Then, according to drawing processing such as proofreading (correction) and drawing of the drawing, the above I'! ! The identification results are searched as appropriate.

By the way, conventionally, in this type of image processing apparatus, the processing results of each area of a drawing (image) are processed into the above-mentioned drawing (of that area).
For example, as shown in FIG. 3, the stored information is stored using the position information (address: X, Y) as a clue when searching for the processing result Search for the desired processing result (
The memory address (x, y) storing the processing result is calculated. That is, the position information (X
, Y) in order from the first address of the memory, detect the address (x, y) of the memory when the desired position information (X, Y) is obtained, and search for that address ( The processing result (here, information about the capacitor C1) stored in (x, y) is obtained.

However, according to such image processing methods, when the image size increases or the number of image regions to be processed increases, a large amount of time is required to search the memory using the above-mentioned position information as a cue. The amount of processing required becomes enormous. As a result, problems such as difficulty in efficiently searching for the information occurred.

[Purpose of the invention]

The present invention has been developed with these circumstances in mind, and its purpose is to simply and efficiently search for information obtained by processing an image, corresponding to the position of the image. The object of the present invention is to provide a highly practical image processing device that can perform the following tasks.

[Summary of the invention]

The present invention provides an image processing apparatus that includes an image memory that stores an image to be processed and an information memory that stores information obtained by processing the image stored in the image memory. has a configuration,
For example, a frame memory superimposed on the image memory includes a reference memory that stores address/data in which the information is written in the information memory at an address corresponding to the address of the image from which the information to be written in the information memory is obtained. When an image address of the image memory is specified, the information memory is accessed using the address data read from the reference memory to obtain the processing result of the image at the specified address, that is, a specific image. This is to obtain the processing results of the area.

〔Effect of the invention〕

Thus, according to the present invention, by simply specifying an address indicating a specific area in an image, the address indicating the address of the information memory in which information (processing results) obtained by processing the image of that specific area is stored. - Data is read from the reference memory in accordance with the address indicating the specific area, and the information memory is accessed according to this address/data, so the processing results of the desired specific area in the image can be easily obtained. Moreover, it is possible to search efficiently.

Moreover, in this way, the address data of the information memory that stores the processing results is directly obtained in correspondence with the image address, so even if the image size increases or the number of processed image areas increases. However, the time required to search for processing results does not increase, and the amount of processing does not increase.

Therefore, the processing results of the desired image part can be obtained very easily.
Efficient (search is possible, etc.) and has great practical effects.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of the main parts of the apparatus according to the embodiment.

The image memory 1 stores an image to be processed inputted via the processing/control unit 2, for example, a drawing image read and inputted via a drawing reading device.
Writing and reading of the image data is controlled under the control of a. The image stored in the image memory 1 is appropriately read out to the processing/control section 2 and subjected to predetermined image processing. This image processing includes, for example, processing for recognizing each of the various drawing symbols written in the drawing image, and obtaining the part name indicated by the drawing symbol as a result of the recognition. The processing results obtained by processing the above image are:
The information is sequentially stored in a table memory (information memory) 3. Writing and reading of data to and from table memory 3 is controlled by address section 3a.

The reference work memory 4 is composed of a frame memory, for example, 1 bit thick, having an address configuration corresponding to the image memory 1, and reading and writing of data therein is controlled by an address section 4a.

Therefore, access control by the address sections 1a and 4a to the image memory 1 and the reference memory 4 is performed simultaneously upon receiving common address data (X, Y) from the processing/control section 2, , 4 fil, mutually corresponding addresses are accessed simultaneously. Further, the address section 3a that controls access to the table memory 3 receives address data (
When reading the information, the table memory 3 is accessed according to address data read from the reference memory 4, which will be described later.

Here, when the result obtained by processing the image is written to the address (x, y) specified by the address section 3a of the table memory 3, the reference work memory 4
Address data l (x, y: commonly given from the processing/control unit 2 to the address unit 3a and the reference work memory 4) indicating the address of the table memory 3 where the information is written is obtained as a result of the processing. At the same time, the image is written to an address corresponding to the address (X, Y) of the image memory 2 where the image is written.

If the image address (X, Y) is a representative point of the image, for example, a coordinate point indicating the center of gravity of the image area or the position of its circumscribed rectangle, it can be used as the address indicating that point. If the representative point cannot be easily determined, it is given as an address indicating all points in the area.

By the way, the address on the reference work memory 4 corresponding to the image address (X, Y) is determined as follows. Now, corresponding to the image address indicated by the address data (X, Y), data on the reference work memory 4 necessary for storing the address data of the table memory 3 storing the processing results is stored. The number of bits is the number of bits necessary to express the address of the table memory 3.
When the thickness of the reference work memory 4 is expressed as bits, it is equal to or more than [(n+1)/k] bits.

However, [*] indicates the largest integer not exceeding *. In the case of this embodiment, since the thickness of the reference work memory 4 is 1 bit as described above, the address data (X.

Y), the necessary data/data on the reference work memory 4 are
The number of bits may be n bits or more. Preferably, the reference work memory 4 is configured to be capable of writing and reading data of [(n+1)/k] bits or more in parallel.

Therefore, for the representative point address (X, Y) of the image, on the reference work memory 4, for example,
An area of n bits in the direction and 1 bit in the y direction (1 in Figure 2)
2 squares) is set as one address space, and addresses ([X+n-1/n], Y) are associated with each other.

The address data of the table memory 3 is stored in the n-bit address space in the X direction starting from the address ([X+n-1/n], Y).

In this way, when information (processing results) obtained by processing an image is written to the table memory 3 in the reference work memory 4, the write address data (x, y) of the table memory 3 is Write address (X.

The information is written in sequence to addresses corresponding to Y).

Note that the reference work memory 4 may be provided separately from the image memory 1;
It may also be realized as a stack of frame memories stacked on top of each other. That is, it is also possible to clear the image memory 1 at the time when the processing on the image is completed and use this image memory 1 as the reference work memory 4.

Also, the size ratio of the image memory and reference work memory 4 is I
In the case of J, address control may be performed assuming that the address (X, Y) of the image memory 1 corresponds to the address (X/β, V/β) of the reference work memory 4.

When referring to the processing results of the specific area of the image stored in the table memory 3, the process is performed as follows. In this case, instead of directly searching the table memory 3 as in the conventional case, the reference memory 4 is referred to, and the address for the table memory 3 is determined from the reference memory 4.
This is done by reading data and accessing the table memory 3.

That is, when obtaining a processing result for a specific area of an image, the representative point address (X, Y) of the specific area is specified. With this address specification, the address corresponding to the above address (X, Y) of the reference work memory 4 is accessed,
The data stored at that address (address data for table memory 3) is read out. The table memory 3 is accessed by the address data read from the reference work memory 4 in this way, and the processing result for the image of the specific area stored at the corresponding address is read from the table memory 3.

In this way, according to this device, by specifying the address of a specific area for an image, the address data of the table memory 3 storing the processing results of that specific area is read out from the reference work memory 4, and the The desired processing result is quickly read out from the table memory 3.

Furthermore, this search process is always executed in a constant manner, regardless of the size of the image or the number of image areas. Therefore, unlike the conventional method, problems such as a long search processing time and an enormous amount of processing are not caused. In addition, great practical effects can be achieved, such as the device configuration not becoming too complicated.

Note that the present invention is not limited to the embodiments described above. For example, the size of each memory 1, 3, 4, address structure, etc. can be determined according to the device specifications, and the correspondence between the addresses of the image memory 1 and the reference work memory 3 can also be modified as appropriate. It is possible. In short, the present invention
Various modifications can be made without departing from the gist of the invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the main parts of an apparatus according to an embodiment of the present invention, and FIG.
The figure shows an example of the structure of the reference work memory in the embodiment apparatus, and FIG. 3 is a diagram for explaining the concept of conventional image processing result search. 1... Image memory, 2... Processing/control unit, 3...
Table memory (information memory), 4... Reference work memory, 1a, 3a, 4a... Address section.

Claims (5)

[Claims] (1) It has an image memory, an information memory for storing information obtained by processing the image stored in the image memory, and an address configuration corresponding to the image memory, and processes the image in the information memory. and a reference memory for storing address data of the information memory where the information is written to an address corresponding to the address on the image memory of the image from which the information was obtained. An image processing apparatus characterized in that, when an image address of the image memory is specified, the information memory is accessed using address data read from the reference memory. (2) The image processing apparatus according to claim 1, wherein the reference memory forms a stack of frame memories superimposed on the image memory. (3) The reference memory consists of a frame memory with a thickness of k (k: natural number) bits, and when the address/data of the information memory is represented by n bits, [(n+k-1)
2. The image processing apparatus according to claim 1, wherein data of more than /k] ([*]: largest integer not exceeding *) bits or more is written and read in parallel. (4) The image processing apparatus according to claim 1, wherein the address of the image from which the information to be written to the information memory is obtained consists of a representative point address of the target image area. (5) The image processing apparatus according to claim 1, wherein the address of the image from which the information written to the information memory is obtained consists of all addresses within the target image area.