JPH01316881A - Image processing device - Google Patents

Abstract

PURPOSE:To provide a various kinds of image processing functions and to dynamically execute a library by storing a various kinds of processing data in a processing data storage means, and processing an input image by an image processing means by reading out the processing data from the processing data storage means. CONSTITUTION:The title device is constituted by adding an image processing unit 10 to process image data by reading out the image data in which an image is transferred to and stored in an image memory 9 and also, to read out the program code of an image processing, and to process the image data based on the program code, and a memory 11 for external program to store the program codes that are a various kinds of processing programs of the image processing unit 10. The image data inputted to a latch 13 for input is fetched in a programmable logic array part 14 with an appropriate timing, and the program code is down-loaded on the programmable logic array part 14 in advance from the memory 11 for external program, and the image data is image-processed based on the program code.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing apparatus in the field of image processing, and particularly to an image processing apparatus that can flexibly perform a plurality of image processes.

[Conventional technology]

Figure 3 is a block diagram of a conventional image processing device. In the figure, (1) is the CPU that performs various arithmetic operations to control the entire device, (2) is the main memory, and (3) is the image capture device. (4) is an A/D converter that converts the analog signal image captured by the camera (3) into a digital signal; (5) is the A/D converter captured from the camera (3); A frame memory that stores the converted digital signal, (6) a monitor that displays the converted image as a digital signal processed image by a D/A converter (7), which will be described later, and (7) a frame memory (5
) is a D/A converter that converts the digital signal stored in (8) into an analog signal, and (8) is the frame memory (5).
(9) is an image memory; (12) is an image processing unit group (1 to n) that performs image processing of image data in the image memory;

Next, the operation of the above conventional device will be explained.

First, the graphic processor (8) performs image input control according to instructions from the CPU (1), and controls the input of the camera (3).
), the input image is taken into the frame memory (5) via the A/D converter (4). The captured image data is transferred to the image memory (9) and subjected to various image processing in the image processing unit group (IL) to (12□). In this case, the image processing unit group (121) to (1
2) is limited to one type of image processing per unit, such as image smoothing, and if n types of image processing are required, n image processing units are required.

Further, this image processing unit is realized by hardware in this case to improve processing speed. After the above image processing is completed, the image data is stored in the image memory (9), and if necessary, after being transferred to the frame memory (5),
The image is displayed on the monitor (5) via the D/A converter (7) under the control of the graphics processor (8).

(Problems to be Solved by the Invention) Since the conventional image processing device is configured as described above, it is necessary to create several image processing units using hardware, resulting in a large device size and high cost. There were issues such as:

This invention was made in order to solve the above-mentioned problems, and it is possible to reduce the scale of the image processing unit, provide a rich library of image processing functions, and dynamically execute this library. The purpose is to obtain equipment.

[Means for Solving the Problems] An image processing apparatus according to the present invention includes a logic circuit of an image processing unit that samples and quantizes an input image and processes various processing data into a digital signal of the image in a processing data storage means. The input image is processed by the image processing means by storing each processing data and reading each processing data from the processing data storage means.

(Function) The image processing means in the present invention generates a desired image processing circuit by downloading the processing data in the processing data storage means, dynamically performs this download under the control of the CPU, and generates a desired image processing circuit by downloading the processing data from the processing data storage means. By converting this into program code, a single image processing unit can perform multiple processes.

(Example) Hereinafter, an example of the present invention will be described based on FIG. 1. FIG. 1 shows a block configuration diagram of the image processing device according to the present embodiment, in which CPtJ (1), main memory (2), camera (3), A/D converter (4),
The functions of the monitor (5), D/A converter (6), frame memory (7), graphic processor (8), and image memory (9) are similar to those of the prior art shown in FIG. 3 above.

In FIG. 1, the image processing device according to the present embodiment transfers and stores the image captured in the conventional device to the image memory (9), reads out the stored image data, and performs image processing. an image processing unit (10) that reads a program code and processes image data based on the program code; and an external program memory (11) that stores program codes that are various processing programs for the image processing unit (10). This is a configuration that adds .

In this case, it is necessary to download the desired program code to the image processing unit (10) from the external program memory (11) in advance. Also, if you download each process, one image processing unit (
10), various image processing can be realized. Furthermore, there may be a plurality of image processing units (lO).

The detailed block diagram of the image processing unit (lO) is shown in FIG.
The image data input to 3) is taken into the programmable logic array section (14) at an appropriate timing, and a program code is downloaded in advance to this programmable logic array section (14) from the external program memory (11). The image data is subjected to image processing based on this program code.

Further, the program logic array section (14) can be easily constructed by using a commercially available chip, for example, a logic cell array (LCA) as it is.

The image data outputted from the programmable logic array section (14) is outputted to the output data latch (15) and written to the image memory (9) at an appropriate timing.

In the above embodiment, the programmable hardware circuit of the programmable logic array section (14) was used as the image processing unit, but various hardware module groups that require high-speed processing, such as a programmable controller (sequencer), etc. Also available.

(Effects of the Invention) As described above, according to the present invention, since the image processing unit is configured so that the hardware circuit can be changed in a programmable manner, the device can be made flexible, compact, and inexpensive. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an image processing device according to an embodiment of the present invention, FIG. 2 is a block diagram of an image processing unit in the embodiment shown in FIG. 1, and FIG. 3 is a block diagram of a conventional image processing device. FIG. 2 is a block configuration diagram. (1)...CPU. (2)...Main memory, (3)...Camera, (4)...A/D converter, (5)...Monitor, (6)...D/A converter, ( 7) Frame memory, (8) Graphic processor, (9) Image memory, (10) Image processing unit, (11) External program memory. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] An image processing device that samples and quantizes an input image and processes it into a digital signal of the image includes a processed data storage means for storing each processed data of the input image, and a processed data storage means for reading each processed data from the processed data storage means and processing the above-mentioned processed data. An image processing device comprising: an image processing means for processing an input image.