JP2530660B2 - Image processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image processing apparatus that processes an image of an object.

[Background technology]

Conventionally, an image processing apparatus Y of this type that processes an image of an object is an image capturing apparatus 1 that captures an object X as shown in FIG. 6, and image data output from the image capturing apparatus 1 is numerical data. And the image data processing unit 2 which processes as. However, in such a conventional example, the numerical data (width, length, area, position data, etc.) obtained by processing the captured image and the determination result are output each time. Therefore, when obtaining the image processing data obtained by calculating the numerical data of the images obtained by multiple times of imaging, the data table 10 for storing the numerical data of the multiple times of captured images and the external data processing unit 11 are provided. It is necessary to provide an external arithmetic processing unit Z equipped with the above, which requires an interface unit for exchanging data between the two devices Y and Z, and the arithmetic processing is performed separately, so the configuration is complicated. However, there was a problem that the cost became high.

[Object of the Invention]

The present invention has been made in view of the above points, and an object thereof is to provide an image processing apparatus that can perform data processing of captured images a plurality of times, has a simple configuration, and is inexpensive. Especially.

[Disclosure of Invention]

(Structure) The present invention includes an image pickup means for picking up an image of an object to obtain image data of the object, an image data processing means for obtaining numerical data from image data output from the image pickup means, and at least the image data processing. A first data table for storing numerical data output from the means; and a second data table for storing and storing the storage content of the first data table and substituting the transferred storage content for the first data table. Data table and the numerical data of the first data table or the numerical data of the first and second data tables are compared and calculated to obtain calculated data, and the calculated data obtained is stored in the first data table. The image data processing means is configured to perform the first processing every time image data is output from the imaging means.
Performing a process of updating the numerical data stored in the data table of the latest numerical data, the arithmetic processing means,
A process of transferring the numerical data stored in the first data table before the update to the second data table and updating the storage content of the second data table each time the image data is output from the imaging unit. And the updated second
Processing for substituting the stored contents of the data table in the first data table after updating, and a plurality of numerical data corresponding to the output of the image data for a plurality of times stored in the first data table after the substituting and A comparison operation is performed on a plurality of operation data to obtain the latest operation data, and the operation data obtained is stored in the first data table. Uses the processing results of multiple captured images, including the latest numerical data and the latest calculation data, and the multiple numerical data and multiple calculation data corresponding to the multiple image data obtained by imaging multiple times. It is possible to provide an image processing apparatus that can perform the required processing, has a simple configuration, and is inexpensive.

(Embodiment 1) FIG. 1 shows an embodiment of the present invention, in which an image pickup device 1 as an image pickup means for picking up an image of an object X to obtain image data of the object X, and an image output from the image pickup device 1. An image data processing unit 2 which is an image data processing means for obtaining numerical data from data, a first data table 4a for storing at least numerical data output from the image data processing unit 2, and a storage of the first data table 4a. The contents are transferred and stored, and the transferred contents are the first data table 4a.
The second data table 4b assigned to the and the numerical data of the first data table 4a or the numerical data of the first and second data tables 4a, 4b are compared and obtained to obtain the operation data and the obtained operation. The image data processing unit 2 is provided with an arithmetic processing unit 3 as an arithmetic processing unit for storing data in the first data table 4a, and the image data processing unit 2 outputs image data from the image pickup apparatus 1 (processing in FIG. ) Each time the numerical data stored in the first data table 4a is updated to the latest numerical data, and the arithmetic processing unit 3 outputs the image data from the imaging device 1 before the update. A process of transferring the numerical data stored in the first data table 4a to the second data table 4b and updating the stored contents of the second data table 4b;
Processing for substituting the updated storage contents of the second data table 4b into the updated first data table 4a (processing)
Then, after the substitution, a comparison operation is performed on a plurality of numerical data and a plurality of operation data corresponding to the output of the image data for a plurality of times stored in the first data table 4a to obtain and obtain the latest operation data. First calculated data
Processing (processing) stored in the data table 4a. However, “current numerical data” and “current calculated data” in FIG. 1 are the latest numerical data or the latest calculated data, numerical data before the previous time, or a numerical data group including the calculated data before the previous time and the calculated data. Similarly, "previous numerical data" and "previous calculation data" indicate the latest numerical data or each data group before the last time excluding the latest calculation data (see FIG. 2).

The operation of the embodiment will be described below. Now, the image data obtained by picking up the image of the object X by the image pickup device 1 is calculated by the image data processing unit 2 to obtain numerical data such as dimension data (for example, width data) of the object X. Is completely the same as the conventional example. In the present embodiment, the first data table 4a continuously stores numerical data for the past multiple times including the latest numerical data, and the second data table 4b stores consecutive past numerical data. Numerical data for a plurality of times is stored, and these consecutive numerical data for a plurality of times are added.

Now, FIG. 2 shows a procedure for updating the stored contents of the first and second data tables 4a, 4b when the width data A, B, C, D are sequentially obtained, and the dotted arrow indicates the first Of all the data from the data table 4a to the second data table 4b, and the solid arrow shows the transfer of data from the second data table 4b to the first data table 4a. It should be noted that C51 to C54 indicate the present numerical data, and OC51 to OC54 indicate the previous numerical data. First, when the first inspection is started, both data tables 4a and 4b are empty, and numerical data (width data) A obtained by data processing of the captured image data is stored in C51.

Next, when the second inspection is started, the latest numerical data B obtained this time causes the first data table 4a
Before the contents of C51 are rewritten, the previous numerical data A currently stored in C51 is OC of the second data table 4b.
The latest numerical data A transferred to 51, then the latest numerical data B enters C51, and the previous numerical data A transferred to OC51 of the second data table 4b according to the substitution formula of C52 = OC51 is the first data table. Enter C52 on 4a. Thereafter, every time the inspection is started in the same manner, the data processing of the image data table and the updating (substitution, transfer) of the first and second data tables 4a and 4b are repeated, and the first data table 4a
In the upper C51 to C54, four consecutive numerical data including the latest numerical data D, the previous numerical data C, the two-preceding numerical value data B, etc. are stored.

On the other hand, in the arithmetic processing unit 3, the arithmetic data obtained by adding the numerical data C51 to C54 is obtained and stored in the first data table 4a, and this arithmetic data is used as width data with little inspection error. It

Therefore, according to the present invention, the image data processing unit 2 for obtaining numerical data from the image data output from the image pickup apparatus 1, and the first data storing at least the numerical data output from the image data processing unit 2 The storage contents of the table 4a and the first data table 4a are transferred and stored, and the transferred storage contents are stored in the first data table 4a.
The second data table 4b assigned to the and the numerical data of the first data table 4a or the numerical data of the first and second data tables 4a, 4b are compared and obtained to obtain the operation data and the obtained operation. Numerical data stored in the first data table 4a each time the image data processing unit 2 outputs image data from the image pickup apparatus 1 and an arithmetic processing unit 3 that stores data in the first data table 4a. Is updated to the latest numerical data, and the arithmetic processing unit 3
However, each time the image data is output from the image pickup apparatus 1, the numerical data stored in the first data table 4a before the updating is transferred to the second data table 4b to store the stored contents in the second data table 4b. And the second updated
Processing for substituting the stored contents of the data table 4b into the updated first data table 4a, and a plurality of numerical data corresponding to the output of the image data for a plurality of times stored in the first data table 4a after the substitution Also, the comparison calculation is performed on a plurality of calculation data to obtain the latest calculation data and the obtained calculation data is stored in the first data table 4a. It is possible to perform processing using the processing results of the captured images a plurality of times without using the arithmetic processing unit Z, no interface circuit for data input / output is required, and both processing units 2, 3
Can be formed using the same CPU, and an image processing apparatus with a simple configuration and low cost can be realized.
In addition, the first data table 4a and the second data table
The CPU forming the two processing units 2 and 3 may execute the processing of transferring and substituting numerical data and operation data with the 4b.

In addition, using only commonly used addition / subtraction / multiplication / division operations and logical operations, processing that has conventionally been performed by using a data buffer for the number of times and time series data processing, for example, the previous numerical data and calculation data as in this embodiment In order to obtain the sum of the latest numerical data and the calculated data, the data buffer that stores the previous numerical data and the calculated data and the process that finds the previous numerical data and the calculated data and calculates the difference are conventionally required. However, in the present embodiment, by substituting and transferring the previous numerical value data or operation data of the second data table 4b into the first data table 4a,
The previous numerical data and the calculated data can be treated as the latest numerical data and the calculated data, and the difference can be obtained by the normal subtraction processing.

(Embodiment 2) FIG. 3 shows another embodiment. In an image processing apparatus similar to that of Embodiment 1, numerical data and calculation data are compared with predetermined values obtained by referring to the judgment reference table 5a. The determination result logical operation unit 6 is provided in addition to the data determination processing unit 5 that determines the latest and previous numerical data and arithmetic data, respectively, in the first and second data tables 4a and 4b. Is stored, the determination result and the logical operation result are also stored.
That is, in the present embodiment, the arithmetic processing unit 3, the data determination processing unit 5, and the determination result logical operation unit 6 correspond to the arithmetic processing means, and these can be formed by the same CPU. In this embodiment, the data determination processing unit 5 determines whether the product (target X) is a good product “1” or a defective product “0”.
The judgment result logical operation unit 6 obtains the logical product of the previous judgment result and the present judgment result. Therefore, by judging the quality according to this logical operation result, a reliable judgment can be made.

The operation of the embodiment will be described below. FIG. 4 is a flow chart showing the operation of the data determination processing and the logical operation processing, S21 is the determination result, D1 is the logical operation result, and OS21 and OD1 that are preceded by "O" are the previous results. Now, when the inspection starts, the entire contents of the first data table 4a are transferred to the second data table 4b, and the second data table 4b storing the previous data is updated.

Next, the captured image data is processed to obtain numerical data C21, which is stored in the first data table 4a. Next, the operation data obtained by substituting the numerical data and performing the operation is stored in the first data table 4a.
Subsequently, the numerical data C21 is compared with predetermined judgment criteria MIN and MAX, and if pass (MIN <C21 <MAX), S21 = '1', and if fail (C21 <MIN or C21> MAX), S21 = It is set to "0", and this determination result S21 is stored in the first data table 4a. Finally, the determination results S21 and OS21 are substituted, logical operation (logical product in this embodiment) is performed, the logical operation result D1 is stored in the first data table 4a, and the state is returned to the state of waiting for the inspection start.

(Embodiment 3) FIG. 5 is a diagram for explaining the operation of still another embodiment, in which S21, which is an inversion of the determination result S21, is used as the operation input, and the continuous multiple times of logical operation results D1 to D4 are given as the first and second operations. Data table 4
The logical operation results D1 to D4 are further logically operated (logical product operation in this embodiment), and the operation result is stored as D5 in the first and second data tables 4a and 4b. And the first and second data tables
The updating operation of 4a and 4b is the same as that of the first embodiment, and the description thereof will be omitted.

Here, when the production line is monitored by the image processing device, the calculation result D5 obtained as described above is obtained.
Indicates that the defective product (S21 = “1”) is continuously generated (four in the embodiment), so immediately when D5 becomes “1”. Controlled to stop the production line.

According to the above configuration, when the image processing apparatus is used for monitoring the production line and it is detected that a defect has continued a predetermined number of times or more in order to detect a serious trouble in a process, conventionally, it is particularly continuous. Although a device for counting the number of defective products is required, in the present embodiment, the substitution and transfer of the previous numerical data and operation data from the second data table 4b to the first data table 4a is performed N-2 times. By repeating the processing, the judgment results (calculation data) of all N times can be treated as the latest judgment results (calculation data), and continuous serious troubles of defective products can be detected by the process of obtaining a normal logical sum.

〔The invention's effect〕

The present invention, as described above, includes an image pickup means for picking up an image of an object to obtain image data of the object, an image data processing means for obtaining numerical data from image data output from the image pickup means, and at least the image data processing. A first data table for storing numerical data output from the means; and a second data table for storing and storing the storage content of the first data table and substituting the transferred storage content for the first data table. Data table and the numerical data of the first data table or the numerical data of the first and second data tables are compared and calculated to obtain calculated data, and the calculated data obtained is stored in the first data table. The image data processing means is configured to perform the first data processing every time the image data is output from the imaging means. A process of updating the numerical data stored in the table to the latest numerical data is performed, and the arithmetic processing unit is stored in the first data table before the updating each time image data is output from the imaging unit. Transfer the numerical data to the second data table
Processing for updating the storage content of the data table, the processing for assigning the updated storage content of the second data table to the updated first data table, and the storage for the first data table after the substitution The plurality of numerical data corresponding to the output of the image data for a plurality of times and the plurality of calculation data are compared to obtain the latest calculation data, and the obtained calculation data is stored in the first data table. And a process of storing the first
The data table of includes the latest numerical data and the latest calculation data, and the plurality of numerical data and the plurality of calculation data corresponding to the plurality of image data obtained by imaging the plurality of times provide a plurality of imaging times. There is an effect that it is possible to provide an image processing apparatus that can perform processing using an image processing result, has a simple configuration, and is inexpensive.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of one embodiment of the present invention, FIG. 2 is an operation explanatory diagram of the same as above, FIG. 3 is a block circuit diagram of another embodiment, FIG. 4 is an operation explanatory diagram of the same as above, and FIG. Is an operation explanatory view of yet another embodiment, and FIG. 6 is a block circuit diagram of a conventional example. Reference numeral 1 is an image pickup device, 2 is an image data processing unit, 3 is a calculation processing unit, 4a is a first data table, 4b is a second data table, and 5 is a data determination processing unit.

Claims (1)

(57) [Claims] 1. An image pickup means for picking up an image of an object to obtain image data of the object, an image data processing means for obtaining numerical data from image data output from the image pickup means, and at least output from the image data processing means. Data table for storing numerical data to be stored, and a second data table for transferring and storing the storage content of the first data table and substituting the transferred storage content for the first data table And numerical data in the first data table or numerical data in the first and second data tables are compared and calculated to obtain calculated data, and the calculated data is stored in the first data table. The image data processing means includes the first means each time the image data is output from the imaging means.
Performing a process of updating the numerical data stored in the data table of the latest numerical data, the arithmetic processing means,
A process of transferring the numerical data stored in the first data table before the update to the second data table and updating the storage content of the second data table each time the image data is output from the imaging unit. And the updated second
Processing for substituting the stored contents of the data table in the first data table after updating, and a plurality of numerical data corresponding to the output of the image data for a plurality of times stored in the first data table after the substituting and An image processing apparatus, comprising: performing a comparison operation on a plurality of operation data to obtain the latest operation data; and storing the obtained operation data in the first data table.