JPH03201077A - Image processor - Google Patents

Abstract

PURPOSE:To display a desired image pickup subject at a high speed by storing the binary image data on each image pickup subject after setting the different labels to each image data and selecting and displaying the label image data corresponding to one or plural labels. CONSTITUTION:The different labels are allocated to each binary image data corresponding to each image pickup subject and stored in a binary image data storage means 14. These binary image data are stored in a label image data storage means 17. Then a label image data selection means 18 selects the label image data corresponding to one or plural labels based on the memory contents of the means 17. The selected label image data is displayed on a display means 21. Thus it is possible to display only the label image data corresponding to the desired label without rewriting the image data into a memory prepared separately. Then the processing speed is increased for an image processor.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an image processing device that binarizes and displays image data.

<Conventional technology> For example, in an automated factory inspection line, a workpiece is imaged with an imaging device such as a CCD camera, the obtained image data is binarized, and the area and circumference of the imaged part of the workpiece are calculated. 111' is recognized by measuring such things. At this time, dirt on the surface of the belt that conveys the workpiece is also imaged, and as a result, noise occurs in the image, and things other than the workpiece are also binarized. Therefore, in order to target only the image portion of the workpiece, labeling is performed on the binary image data, and only the image portion of the label corresponding to the workpiece is extracted and set as the measurement target.

FIG. 11 shows the configuration of a conventional image processing device 1 of this kind, which includes an imaging device 2 and an image signal from the imaging device 2.
It includes a binarization circuit 3 that performs digitization processing, and a binary image memory 4 that stores the binary image data obtained by the binarization circuit 3.

The stored contents of the binary image memory 4 are provided to a display circuit 8 and displayed on a display device 9.

In addition, the binary image data is processed by the CPU connected via path line 5.
6, the CPU 6 labels the binary image data and stores the label image data in the labeling image memory 7.

<Problems to be Solved by the Invention> When a binary image is displayed on the display device 9 as in this conventional example, image noise exists in the binary image, which not only makes it difficult to see the screen but also makes it difficult to work with the workpiece. There is a problem in that it is not possible to check on the screen whether the image part of the object is the object of measurement or whether the image area other than the workpiece is the object of measurement.

Therefore, the image part with the label corresponding to the workpiece is
Extract with PU6 and rewrite the contents of binary image memory 4,
Although it is possible to display the contents of the binary image memory 4 on the display device 9, this requires a rewriting process, and this rewriting time significantly slows down the processing speed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an image processing device that can display only a desired imaging target and can perform this at high speed processing.

Means for Solving the Problems> The image processing apparatus of the present invention includes a binary image data storage means for storing captured and binarized image data, and a storage content of the binary image data storage means. label image data storage means for allocating and storing different labels for each binary image data corresponding to the imaging target; label image data selection means for selecting label image data corresponding to one or more labels; and a display means for displaying an image corresponding to the label.

Effect> The binary image data stored in the binary image data storage means is stored in the label image data storage means with a different label assigned to each image data corresponding to each imaging object. Regarding the stored contents, label image data corresponding to one or more labels is selected by the label image data selection means, and the image data of the selected label is displayed on the display means.

Thereby, only the label image data corresponding to the desired label can be displayed without being rewritten in a separately prepared memory, and the processing speed is increased.

<Embodiment> FIG. 1 shows an image processing device 11 according to an embodiment of the present invention.
This shows the configuration of an imaging device 12 such as a COD camera.
, a binarization circuit 13 that binarizes the image signal from the imaging device 12, and a binary image memory 14 that stores the binarized binary image data. Binary image memory 1
The binary image data of No. 4 is assigned a different label to each imaging object under the control of a CPU (central processing unit F) 16 connected via a pass line 15, and is stored in a labeling image memory 17.

The storage contents of the labeling image memory 17 are inputted to the display selection circuit 19 via the label selection circuit 1. The 0 display selection circuit 19 selects between the binary image memory 14 and the label selection circuit 18 under the control of the CPU 16. The image data of the selected side is output to the display device 21 via the display circuit 20. Also, in the labeling image memory 17,
An address generation circuit 22 for rask scanning that outputs address data is connected.

FIG. 2 shows a specific example of the label selection circuit 18. This label selection circuit 18 includes a multiplexer 23 that selects either label image data from the labeling image memory 17 or address data from the address bus of the CPU 16. The output is given as an address input to the label selection memory 24. When address data is given from the CPU 9, data to be described later is given from the data bus of the CPU 16 via the buffer 25 as data input to the label selection memory 24, and thereby the memory contents shown in FIGS. 9 and 10 are It is formed.

FIG. 3 shows a specific example of the display selection circuit 19.

The display selection circuit 19 includes an AND circuit 26 to which image data from the binary image memory 14 is applied, and an AND circuit 27 to which image data from the label selection circuit 18 is applied.

One AND circuit 27 is supplied with a display selection signal S from the CPU 16, and the other AND circuit 26 is supplied with a signal obtained by inverting the display selection signal S by an inverting circuit 28.

The outputs of the AND circuits 26 and 27 are output to the display circuit 20 via the OR circuit 29.

FIG. 4 shows the procedure of storage processing in this embodiment, and FIGS. 5 and 6 show the storage contents of the binary image memory 14 and the labeling image memory 17. The image signal captured by the imaging device 12 in step l (indicated by rSTIJ in the figure) of FIG. 4 is transferred to the binarization circuit 13 in step 2.
The image is binarized and stored in the binary image memory 14 as shown in FIG. Each diagonal area 30 in FIG. 5 corresponds to a logic "1", and the other background areas 31 correspond to a logic "1".
0”.

In step 3 of FIG. 4, the CPU 16 calculates, for example, the area of each diagonal area 30, and in step 4, the area with the largest calculated value is labeled - "1".

'2J, r3', ... is assigned, background area 3
1 is given the label "0". In this way, label image data consisting of the background area 32 and the imaging target area 33 is obtained in the labeling image memory 17, as shown in FIG.

FIG. 7 is a flowchart showing the output processing of label image data, and FIG. 8 shows an example of display on the display device 21. Note that in this embodiment, it is determined that the imaging target area (the area indicated by the label "1") having the largest area is the workpiece that should be imaged.

First, in step 1 of FIG. 7, the labeling image memory 17
is raster-scanned, its stored contents are read out, and provided as address data to the label selection memory 24 via the multiplexer 23. Desired data from the CPU 16 is stored in the label selection memory 24 as shown in FIG. 9 or FIG. 10. Figure 9 is the 6th
This is a storage example when only label image data of label "1" is displayed in the figure, and FIG. 10 is a storage example when label image data corresponding to labels "r2J, r4" in FIG. 6 is displayed.

That is, in step 2 of FIG. 7, the label image data "0"rl",r2" from the labeling image memory 17 are
A determination as to whether "r3" matches a predetermined label is made based on whether the output when the label image data is used as an address is data rQJ or data "l". The output processing in step 3.4 corresponds to the case where the output is data "1" or data r□, respectively. In step 5, such image data is input to the display selection circuit 19 and output from the CPU 16. Based on the display selection signal S, the output is displayed on the display device 21 as shown in FIG.

<Effects of the Invention> As described above, the present invention assigns and stores different labels to each binary image data corresponding to each imaging target, and then selects label image data corresponding to one or more labels. Since the image corresponding to the selected label is displayed, the desired imaged object can be displayed without rewriting only the image data corresponding to the desired label, and the processing speed can be increased.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an image processing device according to an embodiment of the present invention, FIG. 2 is a block diagram showing an example configuration of a label selection circuit, and FIG. 3 is a block diagram showing an example configuration of a display selection circuit. Figure 4 is a flowchart showing the storage processing procedure, Figure 5 is an explanatory diagram showing the storage contents of the binary image memory, Figure 6 is an explanatory diagram showing the storage contents of the labeling image memory, and Figure 7 is the display. Flowchart showing the procedure; FIG. 8 is an explanatory diagram showing a display example of the display device; FIGS. 9 and 10 are explanatory diagrams showing the storage contents of the label selection memory;
The figure shows a block diagram of a conventional image processing device. 11... Image processing device 12... Imaging device 13
... Binarization circuit 14 ... Binary image memory 1
6...CPU 17...Labeling image memory 18...Label selection circuit 19...Display selection circuit 24...Label selection memory

Claims (1)

[Claims] Binary image data storage means for storing captured and binarized image data; and storage contents of the binary image data storage means are different for each binary image data corresponding to each imaged object. Label image data storage means for assigning and storing labels, label image data selection means for selecting label image data corresponding to one or more labels, and display means for displaying an image corresponding to the selected label. An image processing device comprising: