JPS61107477A - Image data processing device - Google Patents

Abstract

PURPOSE:To obtain the image of a certain range quickly from a given device by providing a density conversion mechanism for desired resolusion, an image expansion and scale-down mechanism, and an image cut-out mechanism for selecting and abstracting a partial image. CONSTITUTION:When a main processor 10 receives an image from a higher system and develops it in an image memory 20, the processor 10 sets in advance the data, relating to its resolution, expansion or scale-down, its magnification and cut-out control, in a data conversion division 30, and writes the image of the specified range in a memory 20 based on those parameters. If this data is output to a printer 73, for example, the processor 10 sets in advance the data, regarding image characteristics and image development position of the printer, in a data conversion division 40, and causes the printer 73 to output the data sequentially based on those parameters.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image data processing apparatus used in a system having a human output device for image data.

[Technical background of the invention and points of interest]

In recent years, various image devices such as image scanners and image printers have been developed and put into practical use. With the spread of these various image devices, devices with different image reading ranges, printing ranges, etc. are emerging. That is, the top/bottom and left/right margins on the paper differ depending on the device. Furthermore, there are even devices such as 7mm facsimile machines that send out the number of pixels of scanned image data that is larger than the paper size.

In this current situation, it is necessary to limit the necessary image range and obtain only that part, that is, to discard unnecessary images and
From the standpoint of system efficiency, a means for extracting image parts that captures only valid partial images has become necessary.

Therefore, a workstation function that can obtain the necessary minimum amount of image processing power has been required for image handling equipment.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image data processing device capable of quickly obtaining valid image data within an arbitrary fixed range from the entire image data for an arbitrary image device. purpose.

[Summary of the invention]

The present invention provides a density conversion mechanism for density-converting all input images having arbitrary resolutions into images having a desired resolution on a two-dimensional bit-manono format image memory to obtain an output image, and an enlargement mechanism for obtaining a desired image size.・In addition to the reduction mechanism, it is possible to target any image device by realizing image data processing which has an image cutting mechanism that arbitrarily extracts a necessary part of the image from the whole image. , effective image data within an arbitrary fixed range can be obtained quickly from the entire image data.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 10 is a main processor that controls the entire device.
Reference numeral 11 indicates a main/J bus of the main processor IQ. 2
0 is in two-dimensional form (X.

2 is an image memory path to which the write/read image data of the image memory 20 is transferred. 30 is an input image data conversion section, which is an input image data converter. -T3, Image The input image input port (VI) receives an input image (from the upper system) via the main bus 10f and an image from the image scanner 63. Furthermore, if the image attribute is a compressed image, the image data decoding unit 32 converts it into an uncompressed image. or,
The conversion control unit 33 converts the number of pixels of the uncompressed image using a reduction/enlargement circuit, and converts the uncompressed image into an image memo IJ2.
Writing to 0? &l Control is performed. Further, the image cutting section 34 performs image processing control to selectively write only an image within a specified range from the mahjong image into the image memory 20, and cut off the outside portion.

40 is an output image data KM section, which includes an image cutting section 4, a conversion control section 42, an image data encoding section 43,
It has an image output port 44 and the like. The image cutting unit 41 reads only images in a designated range from the image memory 20. A conversion control section 42 density-converts the image data obtained from the image cutting section 41 to obtain an image of a desired resolution, and also performs attribute image processing control fl'1 for obtaining a reduced/enlarged image.

Furthermore, if the desired image attribute is a compressed format, the image data encoding section 43 encodes the data generated by the conversion system section 42 in the corresponding compressed format. Also, the image output port 44 sends the image obtained by the image data encoder 43 to the upper system via the main path 10, or! The image output system ff1l is used to output to the link side.

Reference numeral 50 denotes a higher-level system interface section, which receives and receives commands and data from the higher-level system, and performs control to provide status support and data to the higher-level system at full speed. 5 is an upper system interface line connected to the upper system. 60 is the image scanner interface section. Although it is not essential for the processor, it is an interface section when it has a directly connected device. 61 is an image scanner interface section 6
0→image input port 310; 62 is image data/4' bus (including control) inputted from the scanner device 63; 6
Reference numeral 3 denotes a scanner device that scans image attributes under the control of an image scanner interface section 6o.

Reference numeral 70 denotes an image printer interface section, which is an image printer interface section for outputting the image created on the image memory 20 to the printer device 73, although it is not an essential component. 7 is the image output! -To 43→Image nozzle/interface part 700
The image output data number 9 in between, 72, is the image output data (including control). 73 is a printer device that executes printing processing under the control of the image printer interface section 70. Reference numeral 80 denotes a character generation unit, which receives a character code from the image processor 10, generates a character image, and develops it on the image memory 20.
Ru. Character processing methods include reduction, enlargement, and one rotation. Reference numeral 90 denotes a graphic generation section which receives a graphic code P from the main processor 10, generates a graphic image, and develops it in the image memory 20. In addition, image memory 2
There are read mode/OR superimposition mode, etc. for image expansion formation on o.

Here, the operation of one embodiment will be explained.

1) When an image is received from the upper system and expanded on the image memory 20, the flow of image data is as follows: Data converter 30
(Image input port 31 → image data decoding section 32
→ conversion control unit 33 → image extraction unit 34) → image memory path 21 → image memory 20], and the image data input from the host system is transferred to the image memory 2.
Expanded on 0. The image attributes at this time include image compression format (MH, MR, MR), image resolution, image):l expansion position, image size, intensity conversion, reduction/enlargement conversion and its magnification, and image cutting. Input image cropping position, size, and page memo IJ for output control
20, and the main processor 10 sets each part of the input image data converter 30 in advance.

At the time of transferring this image data, the image cutting section 34 extracts an image of only a specified range based on each parameter for controlling the image cutting, and the image memo 1J2 (7) is extracted. At this time, input image data outside the specified range is discarded and is not written to the image memory 20.

2) When sending the image developed in the image memory 20 to the upper system, the flow of image data at this time is as follows:
0 → image memory bus 21 → output image data converter 40 (image cutter 41 → conversion control unit 42 → image data encoder 43 → image output rl −) 4 (
) → Main bus 11 → Upper system interface section 5
0→upper system interface line 51→upper system], and the image data read from the image memory 20 is transferred to the upper system.

The image attributes at this time (substantially the same as in case 1) above) are also set up in advance in each part of the output image data converting section 40 by the main processor 10, as in case 1) above. When transferring this image data, the image cutting section 41 reads out image data only within a specified range from the image memory 20 based on each parameter for the image cutting control, and the upper system will be forwarded to.

3) When outputting the image on the image memory 20 to the printer device 73, the flow of image data at this time is as follows:
0→image memory path 21→output image data conversion section 40 (image cutting section 41→conversion control section 42→image data encoding section 43→image output y4-) 44,
or conversion aj IJ control section 42 → image output port 44)
→Data? Step 1 → Imeno printer interface section 70 → Datanos 72 → Printer device 73],
The image data successively output from the image memory 20 is transferred to the printer device 73. The image attributes at this time are also set up in advance in each part of the output image data converter 40 by the main processor 10, as in the case 2) above. At this time, in addition to the cutting position of the peno memo IJ 20, the image development position of the printer is also set up as a parameter for image cutting control.

Furthermore, since the printing range of an image printer is generally fixed depending on the paper size, positional information for matting excess parts may be given as the above parameter. Furthermore, during the above transfer, the image data encoder 43 is generally sent to the printer as uncompressed data.

4) When developing the image from the scanner device 63 onto the image memory 20, the flow of image data at this time is [scanner device 63
→ image path 62 → image scanner interface, ace unit 60 → data node 61 → input image data converter 30 (image input port 3) → image data recovery memory bus 21 → image memory 20].

The image read by the scanner device 63 is developed on the image memory 20. The image attributes at this time are also set up in each section of the input chimeno data conversion section 30 by the main processor 10, as in the case of each data transfer described above.

In addition, at the time of the above-mentioned transfer, since the image data from the scanner is generally an uncompressed image, the image data decoding section 32 performs a pino-yas.

5) Parallel operation The data transfers in 1) to 4) above can be performed in parallel, which allows the following image data transfer between devices.

(a) Upper system-grilling device 7″:
1.9 In this case, data transfers in 1) and 3) above are performed in parallel.

In this case, the data transfers of 4) and 2) above are performed in parallel.

(c) Upper system → image memo IJ 20 In this case, the data transfers of 1) and 2) above are performed in parallel.

), scanner device 63 → image memory 2.

→Printer installation 73 In this case, data transfers in 4) and 3) above are performed in parallel.

By using the above-described image data processing apparatus as an image input/output device for each image device, even images larger than the physical paper width of a facsimile machine can be processed at a very high speed by the above-mentioned image processing means. Conversely, when creating an image larger than the physical paper width (adding ears to both ends of the image) as an image to be sent to the facsimile machine, this process can be performed at high speed. Furthermore, unnecessary image transfer is eliminated for the entire system, and system efficiency can be improved. or,
By providing the image data processing apparatus according to the present invention as described above between image input/output devices, an increase in cost on each input/output device terminal side can be avoided, and the system as a whole has a large cost advantage. In addition, even if the devices directly connected to the image processor have different resolutions, such as a scanner and a printer, there is no problem at all because the same image is created through internal density conversion.
There is flexibility in device selection, and there are great benefits in terms of cost and sophomming.

In addition, since parallel operation of the image input system and output system is possible, it is excellent in terms of speed performance.

〔Effect of the invention〕

As described in detail above, according to the image data processing apparatus of the present invention, it is possible to quickly obtain effective image data within any given range from the entire image data for any image device.

[Brief explanation of drawings]

The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 10... Main processor, 20... Image memory, 30... Incoming image data conversion unit, 3...
image data decoding section, 33... conversion control section, 34. 41... image data extraction section, 40... output image data conversion section, 4...
- Conversion control unit, 42... Image data encoding unit, 43
... Imageno output port, 50 ... Upper system interface section, 51 ... Upper system interface line, 60 ... Image sensor interface section, 63 ... Scanner device, 70 ... Image node Lintai 7 interface section, 73...Paplinter device, 80
...Character generation section, 90...Graphic generation section.

Claims (1)

[Claims] an image memory in a two-dimensional bitmap format for storing input image data having a resolution attribute; and a data reception unit for receiving data input from an external device including an image input device;
and a conversion means for decoding the image data inputted through the reception unit, and for performing density conversion and enlargement/reduction conversion with the image memory, and truncating unnecessary images of the outer frame; an input image data conversion unit comprising a cutting means for writing the image into the image memory; a cutting means for reading out an arbitrary range of the image from the image memory; and a density of data emerging from the image memory. an output image data converting section having a converting means for performing conversion and enlarging/reducing conversion, a compression encoding means for the data, and a data sending section for sending the data to an external device including an image output device; An image data processing device comprising: