JPS61251288A - Image processing device - Google Patents

Abstract

PURPOSE:To use a cheap ITV camera and a display device or the like as a picture input and output device by feeding a picture image data inputted by an interlaced scanning to a picture image processing section as a sequential scanning type image data of a different picture element speed and outputting the processed image data by the interlaced scanning by the picture element speed on being inputted again. CONSTITUTION:A change-over signal generating section 85 alternately generates a signal 0 and a signal 1 at every time when a frame change over signal is received two times, and according thereto, change over switches 63, 73, 83, 84 are respectively connected to an input terminal of A or B. For instance, when the change over switches 63, 73, 83, 84 are changed over to the terminal of A, an image data inputted from an image input device by an interlaced scanning is written in the first input image memory 61, and while this time, a storing content of the second input image memory 62 is inputted to an image processor 3 by a sequential scanning. The image data obtained by a processing in the image processor 3 is written in the second output image memory 72 by the sequential scanning and while this time, a storing content of the first output image memory 71 is outputted by a standard television system interlaced scanning.

Description

DETAILED DESCRIPTION OF THE INVENTION - [Summary] An image processing device that supplies image data input by interlaced scanning to an image processing unit as sequential scanning image data of different pixel speeds.

The image data processed by the image processing unit is output by interlaced scanning based on the pixel speed when the image data is input again.

[Industrial application field]

The present invention relates to an image processing device that can be used for, for example, extracting certain features from image information obtained by a robot's eyes and transmitting the extracted characteristics to a robot's hand (robot hand). .

The eyes of the robot are generally equipped with an industrial television camera ([
In many cases, imaging devices such as TV cameras and video cameras are used, and these imaging devices employ interlaced scanning based on the standard television format.

On the other hand, the image data used in one image processing unit is the digitized image information such as the density and color of each pixel of the image to be processed, which is arranged in a grid shape at a constant pitch9. When extracting the contour of an object in an image from image data, a process called scanning using a 3×3 pixel differential calculation filter is used.

Therefore, it is not preferable to supply image data input by interlaced scanning to the image processing section as is.

Furthermore, when outputting the image data obtained through processing by means of a display or the like for monitoring, it is advisable to use a standard television system, and it is desirable that the image data be constructed so that it can be output by sequential scanning.

In addition, in the standard television system, the size of 9 images is 51
Assuming 2 x 512 pixels, the reading speed per pixel (referred to as pixel speed here) is 83 ns, but
Since the average value including the retrace time is 120 ns, it is preferable to input the pixel speed to the image processing section at this pixel speed.

[Conventional technology]

FIG. 3 is an explanatory diagram of a conventional example of an image processing apparatus used for the above purpose.

Reference numeral 1 denotes an image input device such as a scanner that reads and inputs images by sequential scanning.

Reference numeral 2 denotes an input image memory that temporarily stores image data for one frame inputted by the image input device 1.

3 is an image processing unit that performs some processing on the image data stored in the input image memory 2;

Reference numeral 4 denotes an output image memory that stores image data obtained by processing in the image processing section 3.

5 is a display device for displaying image data stored in the output image memory.

[Problem that the invention seeks to solve]

The problem with the above conventional example is that it is expensive because a standard television system cannot be used as a single image input device or display device.

There is also a problem that the processing in the image processing unit 3 cannot be performed at high speed using the Vibration system.Therefore, an object of the present invention is to provide an inexpensive ITV camera, display device, etc. based on the standard television system. An object of the present invention is to provide an image processing device that can be used as an output device and can perform processing using a pipeline.

[Failure to solve the problem]

FIG. 1 is a block diagram of the principle of the present invention, and FIG. 3 shows the same reference numerals as those of the conventional example.

Reference numeral 6 denotes a first conversion circuit that outputs image data input by interlaced scanning at a first pixel speed of the standard television system by sequential scanning at a second pixel speed (for example, 120 na/pixel).

Reference numeral 7 denotes a second conversion circuit which outputs the image data obtained by the processing in the first image processing section 3 through interlaced scanning at the first pixel speed of the standard television system.

[Effect]

That is, an imaging device according to the standard television system, such as an ITV camera or a video camera, is used as an image input, and the image data inputted by interlaced scanning is converted to sequential scanning, and at this time, the pixel speed is set to, for example, 8na/
The image data is converted from a pixel to 120 ns/pixel and supplied to the image processing section, and the image data obtained by the image processing section is outputted again according to the standard television system, and 2 image input/output devices and other inexpensive devices are used. can.

〔Example〕

FIG. 2 is a configuration diagram of the embodiment, which is similar to FIG. 1.

61, 62, and 63 are constituent elements of the first conversion circuit 6.

61 and 62 are a first input image memory and a second input image memory, each of which stores image data for one frame.

63 is a 2-person power 1-output selector switch.

71, 72 and 73 are components of the second conversion circuit 7.

71 and 72 are a first output image memory and a second output image memory, both of which store one frame of image data.

73 is a 2-person power 1-output selector switch.

81, 82, 83, 84, and 85 are components of the address supply section 8 that is commonly used by the first conversion circuit 6 and the second conversion circuit 7.

Reference numeral 81 stores image data inputted by interlaced scanning according to the standard television system into the first input image memory 6.
1 or the second input image memory 62, and to output the image data stored in the first output image memory 71 or the second output image memory 72 by interlaced scanning according to the standard television system. a first address generator that generates an address;

82 converts the image data written into the first input image memory 61 or the second input image memory 62 into 120n3.
/ To read the image data by sequential scanning of the pixel speed of the pixel, and the image data obtained in the image processing section 3, 1
A second address generator generates an address for writing into the first output image memory 71 or the second output image memory 72 by sequential scanning at a pixel speed of 20 ns.

83 and 84 are two-man power one-output changeover switches.

Reference numeral 85 denotes a switching signal generating section that generates switching signals for the changeover switches 63, 73, 83, and 84.

The switching signal generator 85 alternately generates signals "0" and "l" every time it receives the frame switching signal S twice, and accordingly, the changeover switches 63, 73, 83, and 84 operate as follows. Select the input connected to the A or B input terminal, respectively.

For example, when the changeover switches 63, 73, 83, and 84 are switched to terminal A, image data input from one image input device by interlaced scanning is written to the first input image memory 61. .

During this time, the stored contents of the second input image memory 62 are input to the image processing device 3 by sequential scanning.

On the other hand, the image data obtained by the processing in the image processing section 3 is sequentially scanned and stored in the second output image memory 72.
During this time, the contents of the first output image memory are output in an interlaced manner in the standard television system.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to use an inexpensive ITV camera, display device, etc. based on the standard television system as an image output device, and it is possible to perform image processing at high speed using a pipeline. can.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of the present invention. FIG. 2 is a configuration diagram of the embodiment. FIG. 3 is an explanatory diagram of a conventional example. In the figure. 3 is an image processing section, and 6 is a first conversion circuit. 7 is the second conversion circuit. 61 and 62 are first and second input image memories, respectively. 71 and 72 are first and second output image memories, respectively. 81 and 82 are first and second address generation units, respectively. 63, 73, 83, and 84 are two-man power output selector switches.

Claims (1)

[Scope of Claims] A first conversion circuit (6) that outputs image data input by interlaced scanning at a first pixel speed by sequential scanning at a second pixel speed; It is characterized by comprising an image processing unit (3) that processes image data, and a second conversion circuit (7) that outputs the image data obtained by the processing by interlaced scanning at the first pixel speed. Image processing device.