JPH09275460A - Image communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the equipment in which a drawn area is determined with an easy processing and the result is transmitted. SOLUTION: Drawing information entered by an entry section 1 is stored in a stroke information memory section 4 as a sampling coordinate group and stored tentatively in an image processing memory section 3 via an interpolation processing section 2 and displayed on a display section 6. When a transmission instruction is given from the entry section 1, a maximum sampling coordinate in the subscanning direction is detected among sampling coordinates from the stroke information memory section 4 and a range from a head line of the image information stored in the image processing memory section 3 till a line corresponding to the maximum sampling coordinate in the subscanning direction is sent sequentially via a communication control section 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for communicating image data, and more particularly to a device for communicating handwritten input information as image data.

[0002]

2. Description of the Related Art Conventionally, in this type of image data communication device, a dot image for one page is stored in a bit map buffer memory and the stored dot images for one page are sequentially communicated. However, in such a device, it takes time to transmit because all data in the bitmap buffer memory is always transmitted regardless of which part of the storage area of the bitmap buffer memory the graphic data is drawn. I had a problem.

In order to solve such a problem, an apparatus which scans all bitmap data stored in a bitmap buffer memory, detects a drawing area in a rectangular area, and sends the data in the rectangular area is known. It is disclosed in Japanese Patent Laid-Open No. 2-93724.

[0004]

However, in the above-mentioned apparatus, since all the bitmap data stored in the bitmap buffer memory is scanned and the drawing area is detected in the rectangular area, the detection takes time and is complicated. It has a problem that it becomes a detection process. The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus for obtaining and transmitting a drawing area without detecting a complicated rectangular area.

[0005]

According to a first aspect of the present invention, in the image processing apparatus for drawing by stroke information, the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information. Stroke information bottom position detecting means for detecting the value of, and transmission means for sequentially transmitting from the head line to the line corresponding to the value detected by the bottom position detecting means. is there.

According to a second aspect of the present invention, in the image processing apparatus for drawing by stroke information, the stroke information lowermost position for detecting the value of the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information. A predetermined value is added to the value of the maximum sampling coordinate position in the sub-scanning direction detected by the detecting means and the stroke information bottom position detecting means, and the lines from the head line to the line corresponding to the added value are sequentially transmitted. And a transmission means.

According to a third aspect of the present invention, in the image processing apparatus for drawing the stroke information by superimposing it on the image information,
The stroke information bottom position detecting means for detecting the value of the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information, and the coordinate position in the sub-scanning direction corresponding to the bottom effective image line of the image information. A bottom effective image position detecting means for detecting a value, a value detected by the stroke information bottom position detecting means and a value detected by the bottom effective image position detecting means are compared, and a value in the sub-scanning direction is obtained. Is provided with a comparison detection means for detecting the larger value and a transmission means for sequentially transmitting from the head line to the line corresponding to the value detected by the comparison detection means.

According to a fourth aspect of the present invention, there is provided an image processing device for drawing stroke information by superimposing it on the image information.
The stroke information bottom position detecting means for detecting the value of the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information, and the coordinate position in the sub-scanning direction corresponding to the bottom effective image line of the image information. A bottom effective image position detecting means for detecting a value, a value detected by the stroke information bottom position detecting means and a value detected by the bottom effective image position detecting means are compared, and a value in the sub-scanning direction is obtained. Is detected by the comparison detection means, and a value corresponding to the value of the maximum sampling coordinate position in the sub-scanning direction detected by the comparison detection means is added with a predetermined value, and the line corresponding to the added value from the head line is added. It is characterized in that it is provided with a transmitting means for sequentially transmitting up to.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an image communication apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a functional block diagram showing an embodiment of an image communication apparatus of the present invention. In FIG. 1, reference numeral 1 denotes an input unit which is composed of a transparent pressure-sensitive digitizer or a capacitance-type digitizer and which inputs handwritten drawing information including stroke information. Reference numeral 2 denotes an interpolation processing unit for performing interpolation processing using stroke information (sampling coordinate information, line type, etc.) from the input unit 1 or stroke information memory 4 described later as drawing image information. 3 is RA
The image processing memory unit is configured by a memory such as M, and has at least a memory having an amount of information that can be displayed on the display unit 6 described later. Reference numeral 4 denotes a non-volatile RAM or the like, which stores the stroke information input from the input unit 1 in the image processing memory unit 3 via the interpolation processing unit 2 and at the same time stores the drawing information input from the input unit 1. It is a stroke information memory unit that stores information about stroke information. An image information storage memory unit 5 is composed of a non-volatile RAM or the like, and stores image information read via an image reading device (not shown) or a communication control unit described later. Reference numeral 6 denotes a display unit which is composed of a display memory and a color LCD or a monochrome LCD and displays the image information stored in the image information memory unit 3. A communication control unit 7 has a predetermined communication procedure and controls communication with a partner device (not shown) connected via a communication line including a public line and a local line. Reference numeral 8 denotes an input unit 1 based on a control program that is configured by a CPU and a ROM and is stored in the ROM.
It is a main control unit that integrally controls the interpolation processing unit 2, the image processing memory 3, the stroke information memory 4, the image information memory 5, the display unit 6, and the communication control unit 7. The input unit 1 and the display unit 6 are used as a display-integrated digitizer that is formed in an overlapping manner. Further, in the present embodiment, the display unit 6
Is capable of displaying information of 640 × 240 dots, and the image processing memory unit 3 is capable of storing information of 640 × 720 dots corresponding to three screens of the display unit.
Further, in the present embodiment, it is assumed that the communication control unit 7 has a facsimile communication procedure and is connected to a facsimile device (not shown) via a wired or wireless communication line.

A first embodiment of image communication of the above apparatus will be described. The drawing information (stroke information) input from the input unit 1 is stored in the stroke information memory unit 4, and at the same time, the interpolation processing unit 2 interpolates the stroke information to obtain the stroke information in the image processing memory 3. Is temporarily stored as drawn image information at a position corresponding to each sampling coordinate forming the. Image processing memory 3
The drawing information stored in is sequentially displayed on the display unit 6. In the first embodiment, it is assumed that “a” shown in FIG. 2A is drawn from the input unit 1. At this time, the image processing memory 3 is stored as shown in FIG. still,
The sampling coordinates are (x, y) coordinates with the point A as a reference (0, 0).

Here, the operator of the apparatus inputs, via the input unit 1, an instruction to transmit the drawn "a" information to the other apparatus (not shown) currently connected via the communication line. Then, a signal indicating the start of transmission is transmitted from the input unit 1 to the main control unit 8. When the main control unit 8 receives a signal indicating the start of transmission from the input unit 1, the main control unit 8 performs processing according to the flowchart shown in FIG.

In S101, the sub-scanning direction (y coordinate) of the sampling coordinates forming the stroke information stored in the stroke information memory unit 4 is compared to obtain the maximum value. That is, the lowermost position of the input drawn image “a” (the position of the maximum value of the y coordinate of the sampling coordinates) (FIG. 2A)
Position (P position) is detected. Alternatively, the input may be detected in real time.

In S102, the main control unit 8 stores only the image information from the beginning to the position (P position) detected in S101, which is stored in the image processing memory 3 (see FIG. 2B). Via the communication control unit 7 according to a communication procedure to a facsimile device (not shown). This allows
The effective area can be detected in a short time by a simple process, and the transmission of extra image information is suppressed when transmitting, so the communication time becomes short, and when transmitting using a public line,
Communication costs can also be reduced.

In the first embodiment, the image information up to the lowermost position (P position) of the drawn image is transmitted, but the position shifted from the lowermost position of the drawn image by a predetermined range (P + predetermined range). The image information up to (position) may be transmitted. Thereby, a minimum margin can be provided. next,
A second embodiment of image communication will be described. The second
In the embodiment, it is assumed that image information is received from a facsimile device (not shown) via the communication line and the communication control unit 7. In addition, in order to simplify the explanation, 640 × 720
It is assumed that the dot image information has been received.

The received image information is stored in the image information storage memory unit 5. At the same time, the image processing memory unit 3
Is also temporarily stored (see FIG. 4A). Additional drawing (stroke information) is performed from the input unit 1 on the image displayed on the display unit 6. This additional drawing is stored in the stroke information memory unit 4, and at the same time, the interpolation processing unit 2 interpolates the stroke information, and the position corresponding to each sampling coordinate forming the stroke information in the image processing memory 3 is stored. Is temporarily stored as drawn image information and displayed on the display unit 6. At this time, the images are displayed so as to be superimposed on the received image and are sequentially displayed on the display unit 6. In the second embodiment, it is assumed that the “spider” shown in FIG. 4B is drawn from the input unit 1. At this time, the image processing memory 3 is stored in FIG.
It will be stored as shown in (c). The sampling coordinates are x and y coordinates with the point A as a reference (0, 0).

Here, when the operator of the apparatus inputs, via the input unit 1, an instruction to transmit the additionally drawn information to the partner apparatus (not shown) currently connected via the communication line, A signal indicating the start of transmission is transmitted from the input unit 1 to the main control unit 8. When the main control unit 8 receives a signal indicating the start of transmission from the input unit 1, the main control unit 8 performs processing according to the flowchart shown in FIG.

In step S201, the sub-scanning direction (y coordinate) of the sampling coordinates forming the stroke information stored in the stroke information memory unit 4 is compared to obtain the maximum value. That is, the lowermost position of the input drawn image “spider” (the position of the maximum value of the y coordinate of the sampling coordinates) (see FIG. 4).
(P position in (b)) is detected. In S202, the main control unit 8 determines that the final line (N position in FIG. 4C) of the image information (see FIG. 4C) stored in the image processing memory 3, that is, the line of the y coordinate 719. ) Is set, and detection of whether or not there is image information other than white information one line at a time (in the direction of the arrow in FIG. 4C) is sequentially performed (in the main scanning direction).

In S203, it is detected whether it is an all-white line, and if it is an all-white line, in S204, the previous 1 line is detected.
A line (a line of y-coordinate 718 if the line of y-coordinate 719 has been designated) is designated, and again in S203, it is detected whether or not there is image information other than white information for each line in the main scanning direction. . In S203, when a line having image information other than white information (M position in FIG. 4C) is detected, the process proceeds to S205.

At S205, the main control section 8 determines at S20.
The lowest position of the drawn image "cloud" detected in 1 (Fig. 4 (b))
P position) and the line position (the lowermost effective image line position of the received image information) having the image information other than the white information detected in S203 (the M position in FIG. 4C), and P
If the position is large, that is, if the drawing information is additionally drawn below the bottom effective image line position (M position in FIG. 4C) of the received image information, the image processing is performed in S206. Only the image information from the beginning stored in the memory 3 (see FIG. 4C) up to the P position detected in S201 is transmitted to the facsimile device (not shown) via the communication control unit 7 according to the communication procedure. .

In S205, when the M position is large, that is, below the additionally drawn bottom position (P position in FIG. 4B), the image other than the white information of the received image information is displayed. If there is information, in S207, from the beginning stored in the image processing memory 3 (see FIG. 4C), S
Only the image information up to the M position detected in 203 is transmitted to the facsimile device (not shown) through the communication control unit 7 according to the communication procedure.

As a result, the effective area can be detected in a short time by a simple process, and the transmission of extra image information is suppressed when transmitting, so that the communication time is shortened and the transmission is performed using a public line. Also, communication costs can be reduced.
In the second embodiment, the lowest position (P position) of the drawn image
Or, although the image information up to the bottom effective image line position (M position) of the received image information is transmitted, a position shifted from the bottom position of the drawn image by a predetermined range (P + position of a predetermined range)
Alternatively, the image information may be transmitted from the position of the lowermost effective image line of the received image information to a position (M + position of a predetermined range) shifted by a predetermined range. Thereby, a minimum margin can be provided.

In this embodiment, the transmission is sequentially performed from the top line of the image information to the bottom position (P position) of the drawn image or the bottom effective image line position (M position) of the image information. Of the drawn image from the highest position of the drawn image (the position of the minimum value of the y coordinate of the sampling coordinates) or the highest effective image line position of the image information (the line position that is closest to the first line and has image information other than white information) Bottom position (P
Position) or the bottom effective image line position (M
The same effect can be obtained by sequentially transmitting data up to (position).

Further, when transmitting the image information, the image information may be transmitted in screen display units.

[0024]

According to the present invention, the effective area can be detected in a short time by a simple process, and the transmission of extra image information is suppressed when transmitting. Therefore, the communication time is shortened and the public line is protected. When using and transmitting, communication cost can also be reduced. Also, a minimum margin can be provided.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of an image communication device of the present invention.

FIG. 2 is a drawing from the input unit in the first embodiment,
It is a schematic diagram which shows the example of the image information memorize | stored in an image processing memory.

FIG. 3 is a flowchart showing a processing procedure of image communication according to the first embodiment.

FIG. 4 is a schematic diagram showing an example of image information received in a second embodiment, drawn from an input unit, and stored in an image processing memory.

FIG. 5 is a flowchart showing a processing procedure of image communication according to the first embodiment.

[Explanation of symbols]

 1 Input Section 2 Interpolation Processing Section 3 Image Processing Memory Section 4 Stroke Information Memory Section 5 Image Information Storage Memory Section 6 Display Section 7 Communication Control Section 8 Main Control Section

Claims (4)

[Claims] 1. A stroke information bottom position detecting means for detecting a value of a maximum sampling coordinate position in a sub-scanning direction among sampling coordinates in stroke information in an image processing apparatus for drawing by stroke information, and a head line. To a line to which the value detected by the lowermost position detection means corresponds to the image communication device. 2. A stroke information bottom position detecting means for detecting a value of a maximum sampling coordinate position in a sub-scanning direction among sampling coordinates in stroke information in an image processing apparatus for drawing by stroke information, and the stroke. And a transmitting means for adding a predetermined value to the value of the maximum sampling coordinate position in the sub-scanning direction detected by the information bottom position detecting means and sequentially transmitting from the head line to the line corresponding to the added value. An image communication device characterized by the above. 3. An image processing apparatus for drawing stroke information by superimposing it on the image information, the stroke information bottom detecting the value of the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information. Position detection means, bottom effective image position detection means for detecting the value of the coordinate position in the sub-scanning direction corresponding to the bottom effective image line of the image information, and value detected by the stroke information bottom position detection means And a value detected by the lowermost effective image position detection means, and a comparison detection means for detecting a larger value in the sub-scanning direction, and a value detected by the comparison detection means from the first line. An image communication apparatus comprising: a transmission unit that sequentially transmits up to a corresponding line. 4. An image processing device for drawing stroke information by superimposing it on image information, the stroke information bottom detecting the value of the maximum sampling coordinate position in the sub-scanning direction among the sampling coordinates in the stroke information. Position detection means, bottom effective image position detection means for detecting the value of the coordinate position in the sub-scanning direction corresponding to the bottom effective image line of the image information, and value detected by the stroke information bottom position detection means And a value detected by the lowermost effective image position detection means, and detects a larger value in the sub-scanning direction, and a maximum value in the sub-scanning direction detected by the comparison detection means. And a transmission means for adding a predetermined value to the value of the sampling coordinate position and sequentially transmitting from the head line to the line corresponding to the added value. Image communication apparatus.