JPS6027084A - Window processing system of picture - Google Patents

Abstract

PURPOSE:To correct the window data within a frame memory with designation of positions by a cursor while displaying the quantized picture of a subject to a display device after writing the window data to a frame memory. CONSTITUTION:A window pattern is written to the 1st frame memory 3 in the form of the binary coded window data in accordance with the write address which is supplied from an address generating circuit 5 via a switching circuit 7. An AND is obtained with the window data by an AND gate 11, and the above- mentioned binary coded data is written to the 2nd frame memory. Then a standard subject is put under a camera 1 and this binary coded picture data is written to the 2nd frame memory 4 and then displayed on a CRT. A correction of the window data is indicated to a CPU6 with push of a correction command key 13. Then a cursor key 14 is operated with reference to the subject on the screen. The cursor is shifted up to the corrected area of the window, and an addition command key 15, etc. are operated.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a nine-image window processing method.

Conventional technology and problems Traditionally, single-image automation was used for the purpose of inspecting product defects, etc.

Processing is taking place. For example, an image of an article being conveyed on a heald conveyor is captured, quantized, pre-processed such as thinning processing, and further processed such as edge extraction and feature extraction, and then compared with reference data to determine the presence or absence of defects. There is something to judge. In such systems, in order to remove unnecessary or inconvenient images from images captured by a visual sensor, a window is often provided and only the images within the window are processed.

Conventionally, in order to set a window, a method has been adopted in which a standard quantized image of an article is displayed on a CRT, and the end point of the window area to be set is specified using cursor keys. However, this conventional method has a drawback in that it is only possible to set windows with relatively simple shapes such as rectangular or triangular shapes, considering the time and effort required for setting.

Another method is to approximate the window area with a set of broken lines or arcs, input the end points of the broken lines, the center of the arc, the radius, etc.
Although it is possible to set windows by processing in the PU, this still requires considerable effort and also has the problem of complicating the system.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a window processing method that can set windows with complex shapes using a relatively simple method and system. .

Structure of the Invention The present invention achieves the above object by writing a binarized image pattern displaying a desired window into a frame memory as window data.

Next, window processing is performed by performing a logical product on the quantized image of the target object and the window data read out from the frame memory.

Furthermore, in a preferred embodiment of the present invention, after writing the window data to the frame memory, while displaying the quantized image of the target object on the display device, the window data in the frame memory is written by specifying the position of the cursor key. configured to fix. .

The present invention will be explained in more detail below using examples.

Embodiment of the Invention Figure 2 is a partial configuration block diagram of an image processing system to which an embodiment of the present invention is applied, in which 1 is a camera source, 2 is a binarization circuit, 3 and 4 are first . A second frame memory, 5 is an address generation circuit, 6 is a CPU, 7, 8, 9, 10 are switching circuits, and 11 is an AND gate.

First, place a piece of paper 20 on which a window pattern is drawn in black and white below the camera 1, and press down the command key 12 to control the CPU.
6 to capture the image. Upon receiving this, the CPU 6 activates the address generation circuit 5, supplies the switching selection signal SEL to the switching circuits 7 and 8, and supplies the write signal W to the first frame memory. The address generation circuit 5 activated by the CPU 6 supplies vertical and horizontal synchronization signals SYN for capturing two images to the camera 1, and also supplies address signals for writing to the first frame memory via the switching circuit 7. . Camera 1 is.

The black and white window pattern drawn on the piece of paper 20 is transmitted to the vertical and horizontal synchronizing signals SYN supplied from the address generation circuit 5.
Import in sync with. The captured window pattern is
The binary value of "1"/"0" is binarized by the binarization circuit 2 placed in the latter stage, and the value in the window area is "1" and all other parts are "0". This window pattern is supplied to the first frame memory 3 via the switching circuit 8. Furthermore, this window pattern is supplied to the P1-containing window pattern supplied from the address generation circuit 5 via the switching circuit 7. It is written into the first frame memory as a binarized window disk according to the address.

In this manner, when the M product of window data is completed, the camera 1 is placed at a predetermined location such as near the belt conveyor. The camera] captures an image of the product (target object) being conveyed on the HELT conveyor under the synchronization signal from the address generation circuit 5 activated by the CPU 6 at a predetermined timing, and supplies it to the binarization circuit 2. . The output of the binarization circuit 2 is supplied to one input terminal of an AND gate 11 via switching circuits 8 and 9. On the other hand, the first frame memory 3
is also supplied with a read signal R and an address signal under the control of the CPU 6, and the read window data is coupled to the other input terminal of the ant game 1-11 via the switching circuit 10. In the AND gate 11, the binary data of the target object that has been logically ANDed with the window data is written into the second frame memory. In addition, the second
In the frame memory of
and an address signal from the address generation circuit 5 are supplied.

The window-processed data accumulated in the second frame memory in this way is read out by a read command from the CPUI and an address signal from the address generation circuit 5, and is provided for processing such as feature extraction in the subsequent image processing device. or displayed on a CRT for silent inspection. Further, by operating the switching circuit 10, the window data in the first frame memory 3 can be displayed on the CRT.

In a preferred embodiment of the invention, the window data written in the first frame memory 3 is modified by positioning the cursor keys.

That is, after writing the window data into the second frame memory 3 in exactly the same manner as in the case of "double series", a standard article is placed below the camera 1, and the binarized image data is transferred to the switching circuit 8. . Display it on T. Next, modify command key 1
By pressing 3, the window data can be modified by the CPU.
After commanding 6), see the screen of the item being displayed on the CRT)!
By operating the cursor key 14 while pressing the Q button to move the cursor to the modification point in the window, and pressing down the addition command key 15 or the deletion command key 16, window areas are added/deleted. In the added window area, the window data in the corresponding area in the first frame memory 3 is inverted from "0" to "1", and on the other hand, in the deleted window area, the window data in the corresponding area in the first frame memory 3 is inverted. The window data of the corresponding area within is inverted from "1" to "0".

In the embodiments described above, the second frame memory is used as a buffer, but it can be omitted if the windowed data is to be processed or displayed immediately.

Effects of the Invention As explained in detail above, the present invention has the following features: A binarized image pattern for displaying a desired window is written into a frame memory as window data. Since the window processing is performed by performing a logical product with the window data read from the frame memory, there is an advantage that a window with a complicated shape can be set using a relatively simple method and system.

[Brief explanation of drawings]

2 is a partial configuration block diagram of an image processing system to which an embodiment of the present invention is applied. 1...Camera, 2...Binarization circuit, 3...First frame memory, 4...Second frame memory, 5...Address generation circuit, 6...CPU, ? 〜10...Switching circuit, 11...And gate. Patent applicant Fanasoku Co., Ltd.

Claims (1)

[Claims] In a window processing method for quantized images. A binarized image pattern that displays the desired window is written to the frame memory as window data. After the writing, while displaying the quantized image of the target object on the display device, the wind rub in the frame memory is corrected by specifying the position of the cursor key. An image window processing power formula, characterized in that window processing is performed by performing a logical product of a quantized image of a target object with window data read from the frame memory. Rumuto 4- is lY → attack on the attack, the prayer age l, the reed publication, the gon stop surrounding H = around the dawn, Ine lα, the rigid axis, and the seven ≠ the company ÷ the marriage of Muboharu.